2026-04-04T20:53:05Z https://www.aemjournal.org/index.php/AEM/oai

oai:ojs.aempublisher.org:article/6 2026-04-04T20:52:58Z AEM:ART driver

Time- and Frequency-Domain Evaluation of Stochastic Parameters on Signal Lines Manfredi, P. Stievano, I. S. Canavero, F. G. Stochastic Transmission Lines Polynomial Chaos This paper focuses on the derivation of enhanced transmission-line models allowing to describe, in time and frequency domain, a realistic interconnect with the inclusion of external uncertainties, like process variations or routing and layout uncertainties. The proposed method, that is based on the expansion of the well-known telegraph equations in terms of orthogonal polynomials, turns out to be accurate and more efficient than alternative solutions like Monte Carlo method in determining the transmissionline response sensitivity to parameters variability. Moreover, an implementation into standard circuit analysis tools such as SPICE is possible. Two application examples based on PCB structures of common use in commercial packages conclude the paper. Advanced Electromagnetics 2012-12-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/6 10.7716/aem.v1i3.6 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 85-93 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/6/pdf Copyright (c) 2012 P. Manfredi, I. S. Stievano, F. G. Canavero

oai:ojs.aempublisher.org:article/8 2026-04-04T20:52:58Z AEM:ART driver

Spatial modifications of three-dimensional elliptic Gaussian beam scattered by two-dimensional periodic array. Gribovsky, A. Yeliseyev, O. Scattering The diffraction problem of a three-dimensional elliptic p- polarized Gaussian beam on an aperture array of rectangular holes is solved. The new algorithm for the solution of three-dimensional scattering problems of linearly polarized wave beams on two-dimensional periodic structures is offered. The given algorithm allows exploring of wave beams with any allocation of a field on cross section. The case of oblique incidence of linearly polarized elliptic Gaussian wave beam on two-dimensional periodic structure is viewed. As structure the rectangular waveguides phased antenna array is chosen. The elliptic shape of a beam cross section gives the chance to proportion energy of an incident field in a plane of an antenna array in the chosen direction. The frequency dependence of the reflection coefficient intensity for the Gaussian beam is calculated. For the analysis of patterns of the reflected and transmitted beams in a far zone the frequencies on which the strongest interaction between next waveguides channels is observed have been chosen. Dynamics of patterns transformation of the reflected and transmitted beams depending on the form of cross-section and a polarization direction of an incident beam on different frequencies is investigated. It is determined that shape of the pattern of reflected and transmitted beams (symmetry, asymmetry, bifurcation, amplitude, width) depends on chosen spatial orientation of the ellipse axes of the cross section in the incident beam. Frequency ranges, in which the form of the reflected and transmitted beams is not Gaussian, are defined. The nature of transformation of the patterns of scattered beams was examined. Narrowing effect of the pattern of transmitted beam and deformation of the pattern of reflected beam is detected. A physical explanation of these effects is given. The results are presented in the form of two- and three-dimensional patterns of the scattered field of beams in the far field. Advanced Electromagnetics 2012-06-04 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/8 10.7716/aem.v1i1.8 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 11-18 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/8/12

oai:ojs.aempublisher.org:article/9 2026-04-04T20:52:58Z AEM:ART driver

Calculations of near-field emissions in frequency-domain into time-dependent data with arbitrary wave form transient perturbations Liu, Y. Ravelo, B. Ben Hadj Slama, J. Near-field emission transient perturbations EMC FFT This paper is devoted on the application of the computational method for calculating the transient electromagnetic (EM) near-field (NF) radiated by electronic structures from the frequency-dependent data for the arbitrary wave form perturbations i(t). The method proposed is based on the fast Fourier transform (FFT). The different steps illustrating the principle of the method is described. It is composed of three successive steps: the synchronization of the input excitation spectrum I(f) and the given frequency data H0(f), the convolution of the two inputs data and then, the determination of the time-domain emissions H(t). The feasibility of the method is verified with standard EM 3D simulations. In addition to this method, an extraction technique of the time-dependent z-transversal EM NF component Xz(t) from the frequency-dependent x- and y- longitudinal components Hx(f) and Hy(f) is also presented. This technique is based on the conjugation of the plane wave spectrum (PWS) transform and FFT. The feasibility of the method is verified with a set of dipole radiations. The method introduced in this paper is particularly useful for the investigation of time-domain emissions for EMC applications by considering transient EM interferences (EMIs). Advanced Electromagnetics 2012-09-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/9 10.7716/aem.v1i2.9 Advanced Electromagnetics; Vol. 1 No. 2 (2012); 26-40 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/9/283 Copyright (c) 2012 Y. Liu, B. Ravelo, J. Ben Hadj Slama

oai:ojs.aempublisher.org:article/10 2026-04-04T20:52:58Z AEM:ART driver

Magnetic Shape Memory Alloys as smart materials for micro-positioning devices Hubert, A. Calchand, N. Le Gorrec, Y. Gauthier, J.-Y. Smart materials MSMA actuators In the field of microrobotics, actuators based on smart materials are predominant because of very good precision, integration capabilities and high compactness. This paper presents the main characteristics of Magnetic Shape Memory Alloys as new candidates for the design of micromechatronic devices. The thermo-magneto-mechanical energy conversion process is first presented followed by the adequate modeling procedure required to design actuators. Finally, some actuators prototypes realized at the Femto-ST institute are presented, including a push-pull bidirectional actuator. Some results on the control and performances of these devices conclude the paper. Advanced Electromagnetics 2012-10-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/10 10.7716/aem.v1i2.10 Advanced Electromagnetics; Vol. 1 No. 2 (2012); 75-84 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/10/pdf

oai:ojs.aempublisher.org:article/11 2026-04-04T20:52:58Z AEM:ART driver

Application of Near-Field Emission Processing for Microwave Circuits under Ultra-Short Duration Perturbations Liu, Y. Ravelo, B. Near-field time-frequency method transient model EMC PWS This paper is dealing with a time-frequency modeling method of electromagnetic (EM) near-field (NF) radiated by electronic devices excited by transient pulse signals. The model developed enables to calculate the EM NF maps at different distances from the given device and also the synthesis of radiation sources enabling to reproduce the field maps. The method proposed is based on the ultra wide band (UWB) frequency model of EM NF maps. The number of EM NF maps can be reduced by considering an innovative algorithm in order to establish simply the dipole model. Then, the transient model can be realized by considering the convolution between the transient excitation signals and the dipole-array model. The method proposed was validated by a standard 3D EM tool with a planar microstrip device excited by microwave signal modulating 1.25-GHz-carrier with 0.5-GHz-bandwidth. As expected, good correlation is found between results from simulation and the investigated modelling method.  The method introduced in this paper is particularly useful for the investigation of time-domain emissions for EMC applications by considering transient EM interferences (EMIs). Advanced Electromagnetics 2012-10-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/11 10.7716/aem.v1i3.11 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 24-40 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/11/pdf

oai:ojs.aempublisher.org:article/12 2026-04-04T20:52:58Z AEM:ART driver

Investigation of the capability of the Compact Polarimetry mode to Reconstruct Full Polarimetry mode using RADARSAT2 data Boularbah, S. Ouarzeddine, M. Belhadj-Aissa, A. Radar polarimetry Compact Scattering Decomposition Recently, there has been growing interest in dual-pol systems that transmit one polarization and receive two polarizations. Souyris et al. proposed a DP mode called compact polarimetry (CP) which is able to reduce the complexity, cost, mass, and data rate of a SAR system while attempting to maintain many capabilities of a fully polarimetric system. This paper provides a comparison of the information content of full quad-pol data and the pseudo quad-pol data derived from compact polarimetric SAR modes. A pseudo-covariance matrix can be reconstructed following Souyris’s approach and is shown to be similar to the full polarimetric (FP) covariance matrix. Both the polarimetric signatures based on the kennaugh matrix and the Freeman and Durden decomposition in the context of this compact polarimetry mode are explored. The Freeman and Durden decomposition is used in our study because of its direct relationship to the reflection symmetry. We illustrate our results by using the polarimetric SAR images of Algiers city in Algeria acquired by the RadarSAT2 in C-band. Advanced Electromagnetics 2012-06-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/12 10.7716/aem.v1i1.12 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 19-28 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/12/11 Copyright (c) 2012 S. Boularbah, M. Ouarzeddine, A. Belhadj-Aissa

oai:ojs.aempublisher.org:article/14 2026-04-04T20:52:58Z AEM:ART driver

"Cut wires grating – single longitudinal wire" planar metastructure to achieve microwave magnetic resonance in a single wire Kraftmakher, G. Butylkin, V. metasructure microwaves cut-wires magnetic resonance Here we present metastructures containing cut-wire grating and a single longitudinal cut-wire orthogonal to grating’s wires. Experimental investigations at microwaves show these structures can provide strong magnetic resonant response of a single nonmagnetic cut-wire in dependence on configuration and sizes in the case when metastructures are oriented along the direction of wave propagation and cut-wires of grating are parallel to the electric field of a plane electromagnetic wave. It is suggested a concept of magnetic response based on antiparallel resonant currents excited by magnetic field of surface polaritons in many spatial LC-circuits created from cut-wire pairs of a grating and section of longitudinal cut-wire. Three separately observed resonant effects connected with grating, LC-circuits and with longitudinal cut-wire have been identified applying measurements in waveguides, cutoff waveguides and free space. To tune and mark resonance split cut-wires are loaded with varactor diodes. Advanced Electromagnetics 2012-09-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/14 10.7716/aem.v1i2.14 Advanced Electromagnetics; Vol. 1 No. 2 (2012); 16-25 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/14/282 Copyright (c) 2012 G. Kraftmakher, V. Butylkin

oai:ojs.aempublisher.org:article/16 2026-04-04T20:52:58Z AEM:ART driver

Broadband impedance spectroscopy of some Li+ and Vo** conducting solid electrolytes Orliukas, A. F. Bohnke, O. Kežionis, A. Kazlauskas, S. Venckutė, V. Petrulionis, D. Žukauskas, T. Šalkus, T. Dindune, A. Kanepe, Z. Ronis, J. Kunigelis, V. Ionic conductivity Impedance spectroscopy Ceramics The solid electrolyte Li3Ti1.5(PO4)3 compound has been synthesized by solid state reaction and studied by X-ray diffraction. At room temperature the compound belongs to rhombohedral symmetry (space group R3 ̅c) with six formula units in the unit cell. Li3Ti1.5(PO4)3, Li3xLa2/3–xTiO3 (where x = 0.12) Li+-ion conducting, Ce0.8Gd0.2O1.9, (ZrO2)92(Y2O3)8 with fast oxygen vacancy transport ceramic samples were investigated in the frequency range from 1 Hz to 3 GHz in the temperature interval (300-700) K by impedance spectroscopy methods. Two dispersion regions in ionic conductivity spectra for investigated ceramic samples have been found. The dispersions have been attributed to relaxation processes in grain boundaries and in grains of the ceramics. Advanced Electromagnetics 2012-07-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/16 10.7716/aem.v1i1.16 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 70-75 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/16/30 Copyright (c) 2012 A. F. Orliukas, O. Bohnke, A. Kežionis, S. Kazlauskas, V. Venckutė, D. Petrulionis, T. Žukauskas, T. Šalkus, A. Dindune, Z. Kanepe, J. Ronis, V. Kunigelis

oai:ojs.aempublisher.org:article/17 2026-04-04T20:52:58Z AEM:ART driver

Assessment of 50%-Propagation-Delay for Cascaded PCB Non-Linear Interconnect Lines for the High-Rate Signal Integrity Analysis Eudes, T. Ravelo, B. Al-Hayek, R. Signal integrity interconnect de-embedding propagation time transfer function RC-model This paper presents an enlarged study about the 50-% propagation-time assessment of cascaded transmission lines (TLs). First and foremost, the accurate modeling and measurement technique of signal integrity (SI) for high-rate microelectronic interconnection is recalled. This model is based on the reduced transfer function extracted from the electromagnetic (EM) behavior of the interconnect line RLCG-parameters. So, the transfer function established takes into account both the frequency dispersion effects and the different propagation modes. In addition, the transfer function includes also the load and source impedance effects. Then, the SI analysis is proposed for high-speed digital signals through the developed model. To validate the model understudy, a prototype of microstrip interconnection with w = 500 µm and length d = 33 mm was designed, simulated, fabricated and tested. Then, comparisons between the frequency and time domain results from the model and from measurements are performed. As expected, good agreement between the S-parameters form measurements and the model proposed is obtained from DC to 8 GHz. Furthermore, a de-embedding method enabling to cancel out the connectors and the probe effects are also presented. In addition, an innovative time-domain characterization is proposed in order to validate the concept with a 2.38 Gbit/s-input data signal. Afterwards, the 50-% propagation-time assessment problem is clearly exposed. Consequently an extracting theory of this propagation-time with first order RC-circuits is presented. Finally, to show the relevance of this calculation, propagation-time simulations and an application to signal integrity issues are offered. Advanced Electromagnetics 2013-02-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/17 10.7716/aem.v2i1.17 Advanced Electromagnetics; Vol. 2 No. 1 (2013); 1-14 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/17/pdf Copyright (c) 2013 T. Eudes, B. Ravelo, R. Al-Hayek

oai:ojs.aempublisher.org:article/20 2026-04-04T20:52:58Z AEM:ART driver

Roughness effect on the efficiency of dimer antenna based biosensor Barchiesi, D. Kessentini, S. Roughness DDA nanoantenna SERS The fabrication process of nanodevices is continually improved. However, most of the nanodevices, such as biosensors present rough surfaces with mean roughness of some nanometers even if the deposition rate of material is more controlled. The effect of roughness on performance of biosensors was fully addressed for plane biosensors and gratings, but rarely addressed for biosensors based on Local Plasmon Resonance. The purpose of this paper is to evaluate numerically the influence of nanometric roughness on the efficiency of a dimer nano-biosensor (two levels of roughness are considered). Therefore, we propose a general numerical method, that can be applied to any other nanometric shape, to take into account the roughness in a three dimensional model. The study focuses on both the far-field, which corresponds to the experimental detected data, and the near-field, responsible for exciting and then detecting biological molecules. The results suggest that the biosensor efficiency is highly sensitive to the surface roughness. The roughness can produce important shifts of the extinction efficiency peak and a decrease of its amplitude resulting from changes in the distribution of near-field and absorbed electric field intensities. Advanced Electromagnetics 2012-09-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/20 10.7716/aem.v1i2.20 Advanced Electromagnetics; Vol. 1 No. 2 (2012); 41-47 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/20/280 Copyright (c) 2012 D. Barchiesi, S. Kessentini

oai:ojs.aempublisher.org:article/22 2026-04-04T20:52:58Z AEM:ART driver

Electromagnetic Absorbers based on High-Impedance Surfaces: From ultra-narrowband to ultra-wideband absorption Costa, F. Monorchio, A. Absorption Scattering EMC Metamaterials Different electrically-thin absorbing designs based on  High-Impedance Surfaces (HIS) are presented and classified on the basis of the nature of loss. HIS structures allow achieving absorption by exploiting either dielectric or ohmic (resistive) losses. The former ultra-narrowband absorption phenomenon can be obtained by employing dielectric losses of commercial substrates. The resonant structure, often referred to as Perfect Metamaterial Absorber, usually comprises a metallic frequency selective surfaces located above a ultra-thin grounded dielectric substrate. The metamaterial absorber is also angularly stable because of its reduced thickness. Alternatively, if a loss component is introduced in the frequency selective surface located in front of the grounded dielectric substrate both narrowband and wideband absorbing structures can be designed. Advanced Electromagnetics 2012-10-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/22 10.7716/aem.v1i3.22 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 7-12 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/22/pdf Copyright (c) 2012 F. Costa, A. Monorchio

oai:ojs.aempublisher.org:article/23 2026-04-04T20:52:58Z AEM:ART driver

An Electric Field Volume Integral Equation Approach to Simulate Surface Plasmon Polaritons Remis, R. Charbon, E. plasmonics electromagnetics iterative solvers In this paper we present an electric field volume integral equation approach to simulate surface plasmon propagation along metal/dielectric interfaces. Metallic objects embedded in homogeneous dielectric media are considered. Starting point is a so-called weak-form of the electric field integral equation. This form is discretized on a uniform tensor-product grid resulting in a system matrix whose action on a vector can be computed via the fast Fourier transform. The GMRES iterative solver is used to solve the discretized set of equations and numerical examples, illustrating surface plasmon propagation, are presented. The convergence rate of GMRES is discussed in terms of the spectrum of the system matrix and through numerical experiments we show how the eigenvalues of the discretized volume scattering operator are related to plasmon propagation and the medium parameters of a metallic object. Advanced Electromagnetics 2013-02-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/23 10.7716/aem.v2i1.23 Advanced Electromagnetics; Vol. 2 No. 1 (2013); 15-24 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/23/pdf Copyright (c) 2013 R. Remis, E. Charbon

oai:ojs.aempublisher.org:article/24 2026-04-04T20:52:58Z AEM:ART driver

Efficient Compression of Far Field Matrices in Multipole Algorithms based on Spherical Harmonics and Radiating Modes Schroeder, A. Bruens, H.-D. Schuster, C. Fast Multipole Algorithms Scattering EMC Compression Techniques This paper proposes a compression of far field matrices in the fast multipole method and its multilevel extension for electromagnetic problems. The compression is based on a spherical harmonic representation of radiation patterns in conjunction with a radiating mode expression of the surface current. The method is applied to study near field effects and the far field of an antenna placed on a ship surface. Furthermore, the electromagnetic scattering of an electrically large plate is investigated. It is demonstrated, that the proposed technique leads to a significant memory saving, making multipole algorithms even more efficient without compromising the accuracy. Advanced Electromagnetics 2012-09-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/24 10.7716/aem.v1i2.24 Advanced Electromagnetics; Vol. 1 No. 2 (2012); 5-11 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/24/31 Copyright (c) 2012 A. Schroeder, H.-D. Bruens, C. Schuster

oai:ojs.aempublisher.org:article/25 2026-04-04T20:52:58Z AEM:ART driver

On The Study of Development of X Band Metamaterial Radar Absorber Abdalla, M. A. Hu, Z. Metamaterials Radar Absorber Periodic Structures A new development of metamaterial applications in radar absorbers for X band is introduced. Two modifications were suggested based on two different approaches which are a new called fan shaped resonator absorber and a modified high impedance metamaterial absorber. Both approaches introduce thin radar absorber (5.3% at centre frequency) with wide bandwidth and high absorption level. The theoretical concepts of each design are explained and validated using full wave simulation. Results illustrate that the new development can achieve wider bandwidth, multiple operating bands; the increase in bandwidth is up to 8 times the conventional one. Moreover, the reported absorbers have capability to operate with different polarizations. Advanced Electromagnetics 2012-12-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/25 10.7716/aem.v1i3.25 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 94-98 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/25/pdf

oai:ojs.aempublisher.org:article/31 2026-04-04T20:52:58Z AEM:ART driver

Dilation of nanonatennas induced by an electromagnetic source Barchiesi, D. Kremer, E. Cherouat, A. Grosges, T. Borouchaki, H. nanoantenna temperature photo-induced dilation The illumination of plasmonic mesostructures produces high confinement of light in their vicinity. This confinement of light can be enhanced in the gap between the two metallic nanorods of a nanonantenna, in particular for the design of biosensors. The nanometric gap can be reduced if the elevation of temperature of the nanonantenna is sufficient, and therefore the fine tuning of the sensor requires the description of the photo-thermal induced dilation. The multiphysics problem associated to such photo-thermal and mechanical effects is modeled through a Finite Element Method (FEM). The problem consists in computing the electromagnetic field, the temperature and the induced dilation surface. This contribution consists in discussing the numerical efficiencies of a sequential, and a coupled approaches, especially in terms of adaptive meshing of the space of computation. The relationship between the field enhancement and the reduction of the gap is studied. Finally the validity of the 2D multiphysic model is discussed. Advanced Electromagnetics 2012-09-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/31 10.7716/aem.v1i2.31 Advanced Electromagnetics; Vol. 1 No. 2 (2012); 48-57 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/31/281 Copyright (c) 2012 D. Barchiesi, E. Kremer, A. Cherouat, T. Grosges, H. Borouchaki

oai:ojs.aempublisher.org:article/34 2026-04-04T20:52:58Z AEM:ART driver

Virtual Singular Scattering of Electromagnetic Waves in Transformation Media Concept Barabanenkov, M. Y. Barabanenkov, Y. N. Nikitov, S. A. Electromagnetics Theory Metamaterials Left handed media Green function If a scatterer and an observation point (receive) both approach the so-called near field zone of a source of electromagnetic waves, the scattering process becomes singular one which is mathematically attributed to the spatial singularity of the free space Green function at the origin. Starting from less well known property of left-handed material slab to transfer the singularity of the free space Green function by implementing coordinate transformation, we present a phenomenon of virtual singular scattering of electromagnetic wave on an inhomogeneity located in the volume of left – handed material slab. Virtual singular scattering means that a scatterer is situated only virtually in the near field zone of a source, being, in fact, positioned in the far field zone. Such a situation is realized if a scatterer is embedded into a flat Veselago’s lens and approaches the lens’s inner focus because a slab of Veselago medium produces virtual sources inside and behind the slab and virtual scatterer (as a source of secondary waves) from both slab sides. Considering a line-like dielectric scatterer we demonstrate that the scattering efficiency is proportional to product of singular quasistatic parts of two empty space Green functions that means a multiplicative quasistatic singularity of the Green function for a slab of inhomogeneous Veselago medium. We calculate a resonance value of the scattering amplitude in the regime similar to the known Mie resonance scattering. Advanced Electromagnetics 2012-07-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/34 10.7716/aem.v1i1.34 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 38-45 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/34/19

oai:ojs.aempublisher.org:article/35 2026-04-04T20:52:59Z AEM:ART driver

On the dynamics of cutting arc plasmas: the role of the power supply ripple Prevosto, L. Electrical discharge Plasma The power sources used in cutting arc torches are usually poorly stabilized and have a large ripple factor. The strong oscillatory components in the voltage and arc current produce in turn, large fluctuations in the plasma quantities. Experimental observations on the dynamics of the non-equilibrium plasma inside the nozzle of a 30 A oxygen cutting torch with a 7 % ripple level of its power source are reported in this work. Advanced Electromagnetics 2012-09-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/35 10.7716/aem.v1i2.35 Advanced Electromagnetics; Vol. 1 No. 2 (2012); 12-15 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/35/284 Copyright (c) 2012 L. Prevosto

oai:ojs.aempublisher.org:article/40 2026-04-04T20:52:59Z AEM:ART driver

Simulation of Plasmonics Nanodevices with Coupled Maxwell and Schrödinger Equations using the FDTD Method Ahmed, I. Li, E. electromagnetics plasmonics nanodevices FDTD Maxwell and Schrödinger equations are coupled to incorporate quantum effects for the simulation of plasmonics nanodevices. Maxwell equations with Lorentz-Drude (LD) dispersive model are applied to large size plasmonics components, whereas coupled Maxwell and Schrödinger equations are applied to components where quantum effects are needed. The finite difference time domain method (FDTD) is applied to simulate these coupled equations. Advanced Electromagnetics 2012-09-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/40 10.7716/aem.v1i1.40 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 76-83 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/40/29 Copyright (c) 2012 I. Ahmed, E. Li

oai:ojs.aempublisher.org:article/42 2026-04-04T20:52:59Z AEM:ART driver

A compact dual-band dual-port diversity antenna for LTE Mouffok, L. Lepage, A. C. Sarrazin, J. Begaud, X. Antennas Dual band Antenna diversity LTE The design of a compact dual-band dual-port antenna system is presented. It operates in two frequency bands, 790-862 MHz and 2500-2690 MHz, thereby making it suitable for Long Term Evolution (LTE) handheld devices. The proposed system is composed of two orthogonal inverted-F antennas (IFA) to perform diversity in mobile terminals. A good agreement is observed between simulated and experimental results. The high antenna diversity capability of the proposed system is highlighted with the calculation of envelope correlation coefficient, mean effective and diversity gains for different environment scenarii. Advanced Electromagnetics 2012-07-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/42 10.7716/aem.v1i1.42 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 52-56 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/42/22 Copyright (c) 2012 L. Mouffok, A. C. Lepage, J. Sarrazin, X. Begaud

oai:ojs.aempublisher.org:article/43 2026-04-04T20:52:59Z AEM:ART driver

Sensitivity analysis to compute advanced stochastic problems in uncertain and complex electromagnetic environments Lalléchère, S. Jannet, B. Bonnet, P. Paladian, F. Uncertainties sensitivity analysis EMC stochastic collocation This paper deals with the advanced integration of uncertainties in electromagnetic interferences (EMI) and electromagnetic compatibility (EMC) problems.   In this context,  the Monte Carlo formalism may provide a reliable reference to proceed to statistical assessments.   After all, other  less  expensive  and  efficient  techniques  have  been implemented more recently (the unscented transform and stochastic collocation methods for instance) and will be illustrated through uncertain EMC problems. Finally, we will present how the use of sensitivity analysis techniques may offer an efficient complement to rough statistical or stochastic studies. Advanced Electromagnetics 2012-10-15 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/43 10.7716/aem.v1i3.43 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 13-23 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/43/pdf Copyright (c) 2012 S. Lalléchère, B. Jannet, P. Bonnet, F. Paladian

oai:ojs.aempublisher.org:article/44 2026-04-04T20:52:59Z AEM:ART driver

On the Evaluation of the Shielding Effectiveness of Electrically Large Enclosure Gifuni, A. Sorrentino, A. Fanti, A. Ferrara, G. Migliaccio, M. Mazzarella, G. Corona, F. Shielding effectiveness Reverberation chamber Enclosures The shielding effectiveness (SE) has become afundamental step in testing active or passive electricdevices. The Reverberating Chamber (RC) is a wellestablishedmethod for determining the SE since has theadvantage to expose the material to a more realisticenvironment. In this paper the SEe of electrically largeenclosure with a metallic mesh grid in a RC is evaluated.Enclosures made with metallic mesh are considered. Inparticular, it is shown that the SE of a material is unable toprovide complete information for the SEe of electricallylarge enclosure made with the same material. Moreover,this latter one is related to the loading conditions within theenclosure itself. Measurements accomplished at RC of theUniversità di Napoli Parthenope (formerly IstitutoUniversitario Navale, IUN) confirm the physical soundnessof the proposed approach. Advanced Electromagnetics 2012-09-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/44 10.7716/aem.v1i1.44 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 84-91 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/44/33

oai:ojs.aempublisher.org:article/45 2026-04-04T20:52:59Z AEM:ART driver

Curvilinear vector finite difference approach to the computation of waveguide modes Fanti, A. Mazzarella, G. Montisci, G. Vector finite difference waveguide polar and elliptical grid We describe here a Vector Finite Difference approach to the evaluation of waveguide eigenvalues and modes for rectangular, circular and elliptical waveguides. The FD is applied using a 2D cartesian, polar and elliptical grid in the waveguide section. A suitable Taylor expansion of the vector mode function allows to take exactly into account the boundary condition. To prevent the raising of spurious modes, our FD approximation results in a constrained eigenvalue problem, that we solve using a decomposition method. This approach has been evaluated comparing our results to the analytical modes of rectangular and circula rwaveguide, and to known data for the elliptic case. Advanced Electromagnetics 2012-07-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/45 10.7716/aem.v1i1.45 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 29-37 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/45/15

oai:ojs.aempublisher.org:article/46 2026-04-04T20:52:59Z AEM:ART driver

Combined FVTD/PSTD Schemes with Enhanced Spectral Accuracy for the Design of Large-Scale EMC Applications Kantartzis, N. V. Dimitriadis, A. I. Tsiboukis, T. D. Computational electromagnetics Electromagnetic compatibility EMC FVTD PSTD spectral accuracy high-order schemes A generalized conformal time-domain method with adjustable spectral accuracy is introduced in this paper for the consistent analysis of large-scale electromagnetic compatibility problems. The novel 3-D hybrid schemes blend a stencil-optimized finite-volume time-domain and a multimodal Fourier-Chebyshev pseudo-spectral time-domain algorithm that split the overall space into smaller and flexible areas. A key asset is that both techniques are updated independently and interconnected by robust boundary conditions. Also, combining a family of spatial derivative approximators with controllable precision in general curvilinear coordinates, the proposed method launches a conformal field flux formulation to derive electromagnetic quantities in regions with fine details. For advanced grid reliability at dissimilar media interfaces, dispersion-reduced adaptive operators, which assign the proper weights to each spatial increment, are developed. So, the resulting discretization yields highly rigorous and computationally affordable simulations, devoid of lattice errors. Numerical results, addressing detailed comparisons of various realistic applications with reference or measurement data verify our methodology and reveal its significant applicability. Advanced Electromagnetics 2012-10-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/46 10.7716/aem.v1i3.46 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 41-55 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/46/pdf

oai:ojs.aempublisher.org:article/47 2026-04-04T20:52:59Z AEM:ART driver

Design, Manufacturing and characterization of integrated inductors with magnetic layers for DC-DC converter Yaya, D. Allassem, D. Youssouf, M. Siblini, A. Chatelon, J. P. Rousseau, J. J. inductor photolithography YIG thin films magnetic layer RF sputtering simulation This paper presents the conception, fabrication and characterization of integrated inductors containing magnetic layers. We require different steps of micro-technologies: preparation of glass and ferrite substrates, RF sputtering, photolithography, etching and finally electroplating techniques for copper and gold films. The geometrical magnitudes are determined by using HFSS simulator software. The measurements performed at low and high frequencies (up to 1 GHz) permit to verify the correlation between experiment and simulation results. The inductance of the manufactured spiral inductor is about 200 nH and it is constant from low frequency up to 0.9 GHz. Advanced Electromagnetics 2012-10-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/47 10.7716/aem.v1i2.47 Advanced Electromagnetics; Vol. 1 No. 2 (2012); 58-63 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/47/pdf

oai:ojs.aempublisher.org:article/49 2026-04-04T20:52:59Z AEM:ART driver

Comparative study of optical properties of the one-dimensional multilayer Period-Doubling and Thue-Morse quasi-periodic photonic crystals Bouazzi, Y. Kanzari, M. Photonic TMM Quasiperiodic Photonic Band Gap Thue-Morse Period-Doubling The last decades have witnessed the growing interest in the use of photonic crystal as a new material that can be used to control electromagnetic wave. Actually, not only the periodic structures but also the quasi-periodic systems have become significant structures of photonic crystals. This work deals with optical properties of dielectric Thue-Morse multilayer and Period-Doubling multilayer. We use the so-called Transfer Matrix Method (TMM) to determine the transmission spectra of the structures. Based on the representation of the transmittance spectra in the visible range a comparative analysis depending on the iteration number, number of layers and incidence angle is presented. Advanced Electromagnetics 2012-10-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/49 10.7716/aem.v1i3.49 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 1-6 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/49/pdf Copyright (c) 2012 Y. Bouazzi, M. Kanzari

oai:ojs.aempublisher.org:article/54 2026-04-04T20:52:59Z AEM:ART driver

A nonlinear model for AC induced corrosion Ida, N. Le Menach, Y. Shan, X. Payer, J. Eddy currents Modeling Corrosion The modeling of corrosion poses particular difficulties. The understanding of corrosion as an electrochemical process has led to simple capacitive-resistive models that take into account the resistance of the electrolytic cell and the capacitive effect of the surface potential at the interface between conductors and the electrolyte. In some models nonlinear conduction effects have been added to account for more complex observed behavior. While these models are sufficient to describe the behavior in systems with cathodic protection, the behavior in the presence of induced AC currents from power lines and from RF sources cannot be accounted for and are insufficient to describe the effects observed in the field. Field observations have shown that a rectifying effect exists that affects the cathodic protection potential and this effect is responsible for corrosion in the presence of AC currents. The rectifying effects of the metal-corrosion interface are totally missing from current models. This work proposes a nonlinear model based on finite element analysis that takes into account the nonlinear behavior of the metal-oxide interface and promises to improve modeling by including the rectification effects at the interface. Advanced Electromagnetics 2012-09-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/54 10.7716/aem.v1i1.54 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 92-96 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/54/pdf_16 Copyright (c) 2012 N. Ida, Y. Le Menach, X. Shan, J. Payer

oai:ojs.aempublisher.org:article/59 2026-04-04T20:52:59Z AEM:ART driver

Difficulties in teaching electromagnetism: an eight year experience at Pierre and Marie Curie University Roussel, H. Hélier, M. Education Electromagnetics We will begin by outlining the details of how electromagnetics are taught in the  electrical engineering program offered at Pierre and Marie Curie University (a French example) from the undergraduate to the Masters degree levels.  We will also discuss how our methods are and should be adapted to teach waves propagation without discouraging students. Advanced Electromagnetics 2012-07-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/59 10.7716/aem.v1i1.59 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 65-69 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/59/25 Copyright (c) 2012 H. Roussel, M. Hélier

oai:ojs.aempublisher.org:article/61 2026-04-04T20:52:59Z AEM:ART driver

Surface impedance of BaFe2-xNixAs2 in the radio frequency range Abbassi, A. Saint-Paul, M. Dkiouak, R. Britel, M.-R. Wang, Z.-S. Luo, H. Lu, X. Ren, C. Wen, H.-H. Iron superconductors microwaves radiofrequency ultrasounds We report measurements of the temperature dependence of the surface impedance in superconducting BaFe1.93Ni0.07As2 crystals using the radiofrequency reflection technique in the 5<T<30K temperature range. An LC resonant circuit with a phase sensitive detection was used at 92MHz. A measurement assembly with point contacts was used at 30MHz. The recent discovery of iron based arsenide superconductors BaFe2-xNixAs2 has attracted much interest. For a Ni doping level of 7% the superconducting phase transition is found around 20K. The temperature dependence of the superconducting penetration depth was determined. Advanced Electromagnetics 2012-08-25 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/61 10.7716/aem.v1i2.61 Advanced Electromagnetics; Vol. 1 No. 2 (2012); 1-4 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/61/pdf_50 Copyright (c) 2012 A. Abbassi, M. Saint-Paul, R. Dkiouak, M.-R. Britel, Z.-S. Wang, H. Luo, X. Lu, C. Ren, H.-H. Wen

oai:ojs.aempublisher.org:article/66 2026-04-04T20:52:59Z AEM:ART driver

The premetric approach to electromagnetism in the 'waves are not vectors' debate Bossavit, A. Maxwell equations differential forms Hodge operator anisotropic Metamaterials A plea for the introduction, in advanced electromagnetics courses, of some basic differential geometric notions:  covectors,  differential forms, Hodge operators.  The main advantages of this evolution should be felt in computational electromagnetism.  It may also shed some new light on the concept of material isotropy. Advanced Electromagnetics 2012-09-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/66 10.7716/aem.v1i1.66 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 97-102 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/66/pdf_15

oai:ojs.aempublisher.org:article/69 2026-04-04T20:52:59Z AEM:ART driver

Signs, curls, and time variations: learning to appreciate Faraday’s law Sihvola, A. Leppävirta, J. Kettunen, H. Maxwell equations Faraday's law Electromotive force LED In this article, we present the analysis of a study on the development of conceptual understanding of dynamic electromagnetic fields of electrical engineering students in Finland. The focus of the study was teaching and understanding of Faraday’s law. A coil with two light-emitting diodes and a strong permanent magnet were used with which the induced electromotive force could be made visible. However, the field and flux directions, temporal changes, and topological constellations within this setting determine in a subtle manner the character of the resulting electric effect. The demonstration was used on electromagnetic field theory classes at Aalto University, Finland, to assess the conceptual understanding of the students. Drawing from the Peer Instruction principle, the students were asked to fill in a questionnaire concerning this experiment, first on their own, and once again after discussing with their neighbors in the classroom. They were asked about the direction of the electric force and the confidence of their answer. The results show that the answer is not very obvious: students tend to vote for the wrong answer. The Peer Instruction discussion greatly improves the situation. Also, the confidence of the students increases thanks to the discussion period with neighbors. The results, however, seem to be somewhat sensitive to the exact constellation and the administration of the experiment. Advanced Electromagnetics 2012-05-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/69 10.7716/aem.v1i1.69 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 1-5 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/69/2 Copyright (c) 2012 A. Sihvola, J. Leppävirta, H. Kettunen

oai:ojs.aempublisher.org:article/70 2026-04-04T20:52:59Z AEM:ART driver

Frequency Dependent Model of Leakage Inductance for Magnetic Components Wilson, P. R. Wilcock, R. Leakage inductance Skin effect Theoretical methods for the calculation of winding losses with respect to frequency have been well documented, but the variation in leakage inductance of magnetic components due to frequency has been less well addressed. In this paper Dowell’s well-known theoretical approach is tested using measurements and finite element analyses. The results presented show deficiencies in the accuracy of models generated using Dowell’s approach and highlight the trade-offs between model complexity, simulation time and accuracy when the finite element analysis method is applied. An alternative behavioral model is presented which models the frequency variation in leakage inductance accurately, is easy to characterize from simple measurements or calculations and is robust. Advanced Electromagnetics 2012-12-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/70 10.7716/aem.v1i3.70 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 99-106 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/70/pdf_1

oai:ojs.aempublisher.org:article/71 2026-04-04T20:52:59Z AEM:ART driver

Nanocomposite C-Pd thin films – a new material with specific spectral properties Suchańska, M. Baghdasaryan, H. Kęczkowska, J. Nanocomposite C-Pd thin films In this paper, the results of optical investigations for thin films of carbon-palladium (C-Pd) nanocomposites are presented. This films were prepared using two steps method (PVD/ CVD). The optical and Raman spectroscopy has been used to characterize the material. The multinanolayer model was used to explain the specific spectral properties. Advanced Electromagnetics 2013-09-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/71 10.7716/aem.v2i1.71 Advanced Electromagnetics; Vol. 2 No. 1 (2013); 65-68 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/71/288 Copyright (c) 2013 M. Suchańska, H. Baghdasaryan, J. Kęczkowska

oai:ojs.aempublisher.org:article/72 2026-04-04T20:52:59Z AEM:ART driver

Enhanced Nonlinear Effects in Metamaterials and Plasmonics Argyropoulos, C. Chen, P.-Y. Alù, A. Metamaterials Plasmonics Nonlinear In this paper we provide an overview of the anomalous and enhanced nonlinear effects available when optical nonlinear materials are combined inside plasmonic waveguide structures. Broad, bistable and all-optical switching responses are exhibited at the cut-off frequency of these waveguides, characterized by reduced Q-factor resonances. These phenomena are due to the large field enhancement obtained inside specific plasmonic gratings, which ensures a significant boosting of the nonlinear operation. Several exciting applications are proposed, which may potentially lead to new optical components and add to the optical nanocircuit paradigm. Advanced Electromagnetics 2012-07-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/72 10.7716/aem.v1i1.72 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 46-51 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/72/21

oai:ojs.aempublisher.org:article/73 2026-04-04T20:52:59Z AEM:ART driver

Polarizability Matrix Extraction of a Bianisotropic Metamaterial from the Scattering Parameters of Normally Incident Plane Waves Karamanos, T. D. Dimitriadis, A. I. Nikolaos V., K. Polarizability Bianisotropic Metamaterials In this paper, a polarizability matrix retrieval method for bianisotropic metamaterials is presented. Assuming that scatterers can be modeled by electric and magnetic pointdipoles located at their centers, the induced dipole moments are analytically related to the normally incident fields, while the scattered fields are also analytically obtained for two individual cases of normal wave incidence. The latter can be combined with the incident fields, to express the desired polarizabilities, with regard to the measured or simulated scattering parameters. In this way, the polarizability matrix can be extracted by solving the resulting non-linear system of equations. The proposed technique is applied to two different split-ring resonator structures and reveals very good agreement with previously reported techniques. Advanced Electromagnetics 2012-11-22 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/73 10.7716/aem.v1i3.73 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 64-70 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/73/pdf Copyright (c) 2012 T. D. Karamanos, A. I. Dimitriadis, K. Nikolaos V.

oai:ojs.aempublisher.org:article/74 2026-04-04T20:52:59Z AEM:ART driver

Directive properties of active coated nano-particles Arslanagić, S. Ziolkowski, R. W. Directive nano-particles nano-antennas The directivities of the fields radiated by a variety of cylindrical and spherical active coated nano-particles, which are excited by their respective sources of illumination at optical frequencies, are investigated. Particular attention is devoted to the influence of the source location and optical gain constant on the directivities. While significant variations in the directivities are realized in the cylindrical cases for different source locations within and slightly outside the nano-particles and values of the optical gain constant, the corresponding spherical cases exhibit negligible differences. Advanced Electromagnetics 2012-07-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/74 10.7716/aem.v1i1.74 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 57-64 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/74/23 Copyright (c) 2012 S. Arslanagić, R. W. Ziolkowski

oai:ojs.aempublisher.org:article/80 2026-04-04T20:52:59Z AEM:ART driver

All-dielectric photonic metamaterials operating beyond the homogenization regime Do, K. V. Le Roux, X. Caer, C. Morini, D. Vivien, L. Cassan, E. Metamaterials Graded photonic crystals Homogenization Photonic metamaterials made of graded photonic crystals operating near the bandgap frequency region are proposed for field manipulation around l=1.5μm. Proof-of-concept structures have been studied using Hamiltonian optics and FDTD simulation, fabricated, and characterized using farfield optical measurements. Experimental results are in good agreement with predictions, showing the interest of graded photonic crystals as an (ultra-low loss) alternative solution to the use of metamaterials combining dielectric and metallic materials with sub-wavelength unit cells. Advanced Electromagnetics 2012-06-04 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/80 10.7716/aem.v1i1.80 Advanced Electromagnetics; Vol. 1 No. 1 (2012); 6-10 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/80/9

oai:ojs.aempublisher.org:article/81 2026-04-04T20:52:59Z AEM:ART driver

Multiband Slot-Based Dual Composite Right/Left-Handed Transmission Line Abdo-Sanchez, E. Martin-Guerrero, T. M. Camacho-Penalosa, C. CRLH Transmission Line Left-Handed A dual Composite Right-/Left-Handed Transmission Line (CRLH TL) implementation that presents multiband behaviour is proposed in this contribution. The artificial TL is realized by loading a host microstrip line with alternate rectangular stubs and slots. The required series and shunt immittances are respectively provided by the slot and the stub. Due to the distributed nature of these immittances, the resultant phase response presents theoretically infinite RH and LH alternate bands, thus being appropriate for multiband applications. The design methodology is described with the help of a proposed TLs-based equivalent circuit and highlights the simplicity for balance condition. Full wave simulated results of the dispersion characteristics and frequency response of a unit-cell and a three-cells structure are presented. Advanced Electromagnetics 2012-10-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/81 10.7716/aem.v1i3.81 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 56-60 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/81/pdf Copyright (c) 2012 E. Abdo-Sanchez, T. M. Martin-Guerrero, C. Camacho-Penalosa

oai:ojs.aempublisher.org:article/82 2026-04-04T20:52:59Z AEM:ART driver

Study and analysis of an electric Z-shaped meta-atom Dhouibi, A. Burokur, S. N. de Lustrac, A. Priou, A. Z-shaped resonator A printed Z-shaped electric meta-atom is presented as an alternative design to the conventional electric-LC (ELC) resonator. We propose to redesign the ELC resonator pattern to get a compact and a low cost electric resonator exhibiting a strong electric response. Our approach consists in redressing the resonator shape to accommodate higher inductance and therefore leading to a lower resonance frequency without being limited by fabrication tolerances. Simulation and measurement results show that the Z metaatom exhibits an electric response to normally incident radiation and can be used very effectively in producing materials with negative permittivity. Advanced Electromagnetics 2012-10-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/82 10.7716/aem.v1i2.82 Advanced Electromagnetics; Vol. 1 No. 2 (2012); 64-70 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/82/pdf

oai:ojs.aempublisher.org:article/83 2026-04-04T20:52:59Z AEM:ART driver

Couplonics Of Cyclic Ternary Systems: From Coupled Periodic Waveguides To Discrete Photonic Crystals Boucher, Y. G. Couplonics Photonic crystals Waveguides In the context of coupled periodic waveguides, "couplonics" refers to the rigorous equivalence between continuous wave coupling and localized interactions. We extend it here to a cyclic ternary system, looked upon as the simplest discrete photonic crystal with actual periodic boundary conditions. A linear decomposition on a supermode basis enables one to reduce the original sixwave problem to three independent two-wave distributed Bragg reflectors (or 1D PC). Advanced Electromagnetics 2013-07-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/83 10.7716/aem.v2i1.83 Advanced Electromagnetics; Vol. 2 No. 1 (2013); 55-58 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/83/pdf_4 Copyright (c) 2013 Y. G. Boucher

oai:ojs.aempublisher.org:article/84 2026-04-04T20:52:59Z AEM:ART driver

Novel antenna concepts via coordinate transformation Tichit, P.-H. Burokur, S. N. Wu, X. Germain, D. de Lustrac, A. antenna coordinate transformation Coordinate transformation is an emerging field which offers a powerful and unprecedented ability to manipulate and control electromagnetic waves. Using this tool, we demonstrate the design of novel antenna concepts by tailoring their radiation properties. The wave manipulation is enabled through the use of engineered dispersive composite metamaterials that realize the space coordinate transformation. Three types of antennas are considered for design: a directive, a beam steerable and a quasi-isotropic one. Numerical simulations together with experimental measurements are performed in order to validate the coordinate transformation concept. Near-field cartography and far-field pattern measurements performed on a fabricated prototype agree qualitatively with Finite Element Method (FEM) simulations. It is shown that a particular radiation pattern can be tailored at ease into a desired one by modifying the electromagnetic properties of the space around radiator. This idea opens the way to novel antenna design techniques for various application domains such as the aeronautical and transport fields. Advanced Electromagnetics 2013-02-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/84 10.7716/aem.v2i1.84 Advanced Electromagnetics; Vol. 2 No. 1 (2013); 25-32 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/84/pdf Copyright (c) 2013 P.-H. Tichit, S. N. Burokur, X. Wu, D. Germain, A. de Lustrac

oai:ojs.aempublisher.org:article/87 2026-04-04T20:52:59Z AEM:ART driver

Surface Plasmon - Guided Mode strong coupling Castanié, A. Felbacq, D. Guizal, B. Surface Plasmon Guided Mode It is shown that it is possible to realize strong coupling between a surface plasmon and a guided mode in a layered structure. The dispersion relation of such a structure is obtained through the S-matrix algorithm combined with the Cauchy integral technique that allows for rigorous computations of complex poles. The strong coupling is demonstrated by the presence of an anticrossing in the dispersion diagram and simultaneously by the presence of a crossing in the loss diagram. The temporal characteristics of the different modes and the decay of the losses in the propagation of the hybridized surface plasmons are studied. Advanced Electromagnetics 2012-10-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/87 10.7716/aem.v1i2.87 Advanced Electromagnetics; Vol. 1 No. 2 (2012); 85-88 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/87/pdf_1

oai:ojs.aempublisher.org:article/89 2026-04-04T20:52:59Z AEM:ART driver

Synthesis of RF Circuits with Negative Time Delay by Using LNA Ravelo, B. RF Circuits LNA Negative group delay NGD A demonstration of the negative time-delay by using active circuit topologies with negative group delay (NGD) is described in this paper. This negative time delay is realized with two different topologies operating in base band and modulated frequencies. The first NGD topology is composed of an RL-network in feedback with an RF/microwave amplifier. Knowing the characteristics of the amplifier, a synthesis method of this circuit in function of the desired NGD values and the expected time advance is established. The feasibility of this extraordinary physical effect is illustrated with frequency- and time-domain analyses. It is shown in this paper that by considering an arbitrary waveform signal, output in advance of about 7 ns is observed compared to the corresponding input. It is stated that such an effect is not in contradiction with the causality. The other NGD topology is comprised of a microwave amplifier associated with an RLC-series resonant. The theoretical approach illustrating the functioning of this NGD circuit is established by considering the amplifier S-parameters. Then, synthesis relations enabling to choose the NGD device parameters according to the desired NGD and gain values are also established. To demonstrate the relevance of the theoretic concept, a microwave device exhibiting NGD function of about -1.5 ns at around 1.19 GHz was designed and analyzed. The NGD device investigated in this paper presents advantages on its faculty to exhibit positive transmission gain, the implementation of the bias network and matching in the considered NGD frequency band. Advanced Electromagnetics 2013-07-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/89 10.7716/aem.v2i1.89 Advanced Electromagnetics; Vol. 2 No. 1 (2013); 44-54 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/89/pdf_2

oai:ojs.aempublisher.org:article/90 2026-04-04T20:52:59Z AEM:ART driver

Neutralization of LC- and RC-Disturbances with Left-Handed and NGD Effects Ravelo, B. Left-Handed This paper focus is on the neutralization technique of the unwanted physical disturbances in the radio frequencies (RF) and digital electronic structures. Most of parasitic effects induced in these systems can be modeled by RC- and LC- passive networks. For canceling these disturbing effects, we can proceed with the transfer function neutralization in the considered operating frequency bands. This neutralization concept is developed by using first, a left-handed (LH) and negative group delay (NGD) circuits inspired from metamaterials. The fundamental theoretical approach illustrating the RC- and LC-effects transfer function neutralization is described. Synthesis relations enabling to determine the elements of the LH and NGD circuit correctors in function of the perturbation parameters are established. Numerical and experimental demonstrators are presented to validate the technique proposed. This later is particularly useful for the improvement of the analogue and digital signal integrity degraded by electromagnetic interferences. Advanced Electromagnetics 2013-10-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/90 10.7716/aem.v2i1.90 Advanced Electromagnetics; Vol. 2 No. 1 (2013); 73-84 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/90/pdf_14 Copyright (c) 2013 B. Ravelo

oai:ojs.aempublisher.org:article/92 2026-04-04T20:52:59Z AEM:ART driver

Vortexlike Power Flow at the Interfaces of Metamaterial Lens Fang, K. Zhang, Y. W. Zhang, L. W. Metamaterials Lens The metamaterial lens with DPS/DNS/DPS structure has been realized by using the two-dimensional (2D) isotropic transmission line approach. We studied the vortexlike power flow at the interfaces of metamaterial lens and validated by the finite-difference time-domain (FDTD) simulator. The computational results showing its different conditions near DPS/DNS and other kinds of interfaces are obtained by CST STUDIO SUITE at different frequencies, and demonstrate the intuitionistic power location at the metamaterial lens interfaces. Advanced Electromagnetics 2012-10-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/92 10.7716/aem.v1i2.92 Advanced Electromagnetics; Vol. 1 No. 2 (2012); 71-74 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/92/pdf_1 Copyright (c) 2012 K. Fang, Y. W. Zhang, L. W. Zhang

oai:ojs.aempublisher.org:article/93 2026-04-04T20:52:59Z AEM:ART driver

Experimental study of EIT-Like phenomenon in a metamaterial plasma waveguide Wang, W. Zhang, L. Fang, K. Zhang, Y. W. Metamaterials This paper demonstrates the realization of the electromagnetically induced transparency (EIT)-like transmission in a metamaterial plasma waveguide with double side defects based on transmission lines. The waveguide with a single side defect works as a plasma resonator and the resonance wavelength is determined by the Fabry-Perot resonance of surface plasma. While in a waveguide with double side defects, a transmission peak appears between the two resonators frequencies because of the destructive interference between the resonance modes of the two resonators, which indicates a pronounced EIT phenomenon. The experiment results agree well with simulations in microwave frequencies. Advanced Electromagnetics 2012-11-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/93 10.7716/aem.v1i3.93 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 61-63 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/93/pdf Copyright (c) 2012 W. Wang, L. Zhang, K. Fang, Y. W. Zhang

oai:ojs.aempublisher.org:article/97 2026-04-04T20:52:59Z AEM:ART driver

Electromagnetic coupling in a planar periodic configuration of resonators Jouvaud, C. Ourir, A. de Rosny, J. Electromagnetic Coupling Periodic Resonators We are studying arrays composed of a periodic arrangement of sub-wavelength resonators. An analytical model is developed inside an array of 4 by 4 multi-gap split ring resonators. To describe the frequency splitting of the single fundamental resonance, we propose a simple model based on the approximation of each resonator as an electrical dipole and a magnetic dipole that are driven by the same complex amplitude. We show that the relative strength of the two dipoles strongly depends on cell symmetry. With this approximation, the dispersion relation can be obtained for an infinite size array. A simple matrix diagonalization provides a powerful way to deduce the resonant frequencies for finite size array. These results are comforted by numerical simulations. Finally, an experimental demonstration of a tunable antenna based on this study is presented. Advanced Electromagnetics 2012-12-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/97 10.7716/aem.v1i3.97 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 107-110 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/97/pdf Copyright (c) 2012 C. Jouvaud, A. Ourir, J. de Rosny

oai:ojs.aempublisher.org:article/98 2026-04-04T20:52:59Z AEM:ART driver

Reducing radar cross section by investigation electromagnetic materials Komeylian, S. Hojjat-Kashani, F. Radar cross section Decreasing the Radar Cross Section (RCS) is investigated in electromagnetic materials, i.e. double-positive (DPS) , double-negative (DNG) , epsilon-negative (ENG) and mu-negative (MNG) materials. The interesting properties of these materials lead to a great flexibility in manufacturing structures with unusual electromagnetic characteristics. The valid conditions for achieving the transparency and gaining resonance for an electrically small cylinder are established, in this corresponding The effect of incidence direction on RCS inclusive of transparency and resonance conditions is also explored ,through computer simulations for an electrically small cylinder. Advanced Electromagnetics 2012-12-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/98 10.7716/aem.v1i3.98 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 111-116 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/98/pdf_1 Copyright (c) 2012 S. Komeylian, F. Hojjat-Kashani

oai:ojs.aempublisher.org:article/105 2026-04-04T20:52:59Z AEM:ART driver

Propagation of ELF Radiation from RS-LC System and Red Sprites in Earth-Ionosphere Waveguide Paras, M. K. Rai, J. Lightning Sprites Ionosphere Waveguide In this paper, two different mechanisms return stroke-lateral corona (RS-LC) system and red sprites which excite Earth-ionosphere waveguide have been discussed. The electric and magnetic fields from RS-LC system and red spites in the Earth-ionosphere waveguide have been calculated. It has been found that red sprites contribute to the Schumann resonances (SR) greatly as compared to the RS-LC system. Advanced Electromagnetics 2012-10-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/105 10.7716/aem.v1i2.105 Advanced Electromagnetics; Vol. 1 No. 2 (2012); 96-102 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/105/pdf

oai:ojs.aempublisher.org:article/109 2026-04-04T20:52:59Z AEM:ART driver

Electromagnetic controllable surfaces based on trapped-mode effect Dmitriev, V. Prosvirnin, S. Tuz, V. R. Kawakatsu, M. N. Metamaterials Trapped-mode In this paper we present some recent results of our theoretical investigations of electromagnetically controllable surfaces. These surfaces are designed on the basis of periodic arrays made of metallic inclusions of special form which are placed on a thin substrate of active material (magnetized ferrite or optically active semiconductor). The main peculiarity of the studied structures is their capability to support the trapped-mode resonance which is a result of the antiphase current oscillations in the elements of a periodic cell. Several effects, namely: tuning the position of passband and the linear and nonlinear (bistable) transmission switching are considered when an external static magnetic field or optical excitation are applied. Our numerical calculations are fulfilled in both microwave and optical regions. Advanced Electromagnetics 2012-10-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/109 10.7716/aem.v1i2.109 Advanced Electromagnetics; Vol. 1 No. 2 (2012); 89-95 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/109/pdf

oai:ojs.aempublisher.org:article/111 2026-04-04T20:52:59Z AEM:ART driver

Dielectric Resonator Antenna Mounted on Cylindrical Ground Plane for Handheld RFID Reader at 5.8 GHz Malhat, H. A. E. Zainud-deen, S. El-Shalaby, N. Awadalla, K. RFID DRA Dielectric resonator antenna (DRA) mounted on cylindrical ground plane is investigated for handheld RFID reader applications at 5.8 GHz. The simplicity of the structure makes it practical in terms of cost, space, and ease of fabrication. The radiation characteristics of the antenna in free space and in the presence of a proposed compact reader device model and human hand are calculated. The antenna is circularly polarized and exhibits peak gain of 7.62 dB at 5.8 GHz with high front to back ratio of 15.5 dB. Using the same reader device model, a sequentially feeding 2×2 DRA array mounted on the same cylindrical ground plane is used for RFID reader antenna at 5.8 GHz. The array introduces high gain of 9.36 dB at 5.8 GHz with high front to back ratio of 10.48 dB. The 2×2 DRA array elements exhibit circular polarization over a frequency band of 1.1 GHz. The axial ratio is 1.1 dB at 5.8 GHz. The proposed reader model is simple and has a small size compared with that in the case of planar ground plane. The results are calculated using the finite element method (FEM) and compared with that calculated using the finite integral technique (FIT). Advanced Electromagnetics 2012-12-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf application/msword https://www.aemjournal.org/index.php/AEM/article/view/111 10.7716/aem.v1i3.111 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 71-78 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/111/pdf https://www.aemjournal.org/index.php/AEM/article/view/111/260

oai:ojs.aempublisher.org:article/119 2026-04-04T20:52:59Z AEM:ART driver

A Simple Electromagnetic Analysis of Magnetic NDE Using a Double Rectangular Coil an a Hall Effect Sensor Bettaieb, L. Kokabi, H. Poloujadoff, M. Hall Effect Eddy current In this paper a simple analysis and measurement in eddy current NDE are presented. A Hall probe is associated to a double Printed Circuit Board PCB. The configurations examined involve the coil in air and the coil above aluminum plates, either with or without cracks of various depths. The agreement between experimental and theoretical results is very good, showing that a very simple model accurately describes the electromagnetic fields. Advanced Electromagnetics 2012-12-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/119 10.7716/aem.v1i3.119 Advanced Electromagnetics; Vol. 1 No. 3 (2012); 79-84 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/119/pdf_1

oai:ojs.aempublisher.org:article/120 2026-04-04T20:52:59Z AEM:ART driver

Reconsidering Ampere’s Double Layer Representation for Magnetic Field, Evaluation in a NDE Dection of a zero volume crack Poloujadoff, M. Bettaieb, L. Kokabi, H. Ampere’s double layer eddy currents magnetic field evaluation NDE zero volume crack The paper has two different objectives. The first one is to  show that Ampere’s double layer method, which is equivalent  to one of the Maxwell equations, leads to the integration of a  simple closed form expression, thus avoiding the need to solve  complicated partial differential equations. The second aim is  to study the case of a zero volume defect in a NDE problem by  a perturbation method and the introduction of a double layer.  The combination of these two techniques leads to a very fast  solution of the problem. A practical example including Advanced Electromagnetics 2014-04-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/120 10.7716/aem.v3i1.120 Advanced Electromagnetics; Vol. 3 No. 1 (2014); 1-7 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/120/pdf_28

oai:ojs.aempublisher.org:article/130 2026-04-04T20:52:59Z AEM:ART driver

Optimal High-Order Method of Moment combined with NURBS for the scattering by a 2D cylinder. Khairi, R. Coatanhay, A. Khenchaf, A. Scattering Computational Methods This paper deals with the High-Order Method of Moments (HO-MoM) combined with Non-Uniform Rational Basis Splines (NURBS) segments to evaluate the scattering by a 2D cylinder. The authors mainly focus upon the influence of the different parameters (polynomial basis, order, mesh length, curvature, polarization,...) and try to determine if a optimal choice exists or not for the convergence speed. Advanced Electromagnetics 2013-02-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/130 10.7716/aem.v2i1.130 Advanced Electromagnetics; Vol. 2 No. 1 (2013); 33-43 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/130/pdf

oai:ojs.aempublisher.org:article/136 2026-04-04T20:52:59Z AEM:ART driver

Design of Experiments for Factor Hierarchization in Complex Structure Modelling Kasmi, C. Hélier, M. Darces, M. Prouff, E. Design of Experiments Electromagnetic Topology Electromagnetic Interferences Modelling the power-grid network is of fundamental interest to analyse the conducted propagation of unintentional and intentional electromagnetic interferences. The propagation is indeed highly influenced by the channel behaviour. In this paper, we investigate the effects of appliances and the position of cables in a low voltage network. First, the power-grid architecture is described. Then, the principle of Experimental Design is recalled. Next, the methodology is applied to power-grid modelling. Finally, we propose an analysis of the statistical moments of the experimental design results. Several outcomes are provided to describe the effects induced by parameter variability on the conducted propagation of spurious compromising emanations. Advanced Electromagnetics 2013-07-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/136 10.7716/aem.v2i1.136 Advanced Electromagnetics; Vol. 2 No. 1 (2013); 59-64 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/136/289

oai:ojs.aempublisher.org:article/151 2026-04-04T20:52:59Z AEM:ART driver

UWB Miniature Antenna Based on the CRLH-TL with Increase Gain for Electromagnetic Requirements Kenari, M. A. Moghadasi, M. N. Antenna Radiation Metamaterial In this paper, a novel ultra-wideband (UWB) miniature antenna based on the composite right-left handed transmission line (CRLH-TL) structure with enhancement gain is proposed and investigated. With CRLH metamaterial (MTM) technology embedded, the proposed UWB and miniature antenna is presented with best in bandwidth, size, efficiency and radiation patterns. To realize characteristics of the antenna, the printed -shaped gaps into the rectangular radiation patches are used. This antenna is constructed of the two unit cells, also presented antenna is designed from 2.25 GHz to 4.7 GHz which corresponding to 70.5% bandwidth. The overall size of the presented antenna is 10.8mm×6.9mm×0.8mm or 0.09λ0× 0.05λ0 × 0.006λ0 at the operating frequency f = 2.5 GHz (where λ0 is free space wavelength). The radiation peak gain and the maximum efficiency which occurs at 4.6 GHz, are 3.96dBi and 63.6%, respectively. Advanced Electromagnetics 2014-10-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/151 10.7716/aem.v3i1.151 Advanced Electromagnetics; Vol. 3 No. 1 (2014); 61-65 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/151/pdf_37

oai:ojs.aempublisher.org:article/156 2026-04-04T20:52:59Z AEM:ART driver

General Lossy External Cloak with New Structures Ghasemi, E. Aghamohamadi, F. Abdolali, A. External cloak In this article we consider loss for all parts of external cloaks that are achieved by the different transformation functions. Each cloak has a different threshold for loss. We compare the simulation result with each other to find the best function for external cloaking. Advanced Electromagnetics 2013-08-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/156 10.7716/aem.v2i2.156 Advanced Electromagnetics; Vol. 2 No. 2 (2013); 18-21 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/156/291

oai:ojs.aempublisher.org:article/159 2026-04-04T20:52:59Z AEM:ART driver

Beam Steering at Higher Photonic Bands and Design of a Directional Cloak Formed by Photonic Crystals Subramanian, V. Yogesh, N. Photonic crystal Beam Steering Directional cloak Beam steering due to anomalous dispersion at higher photonic bands in dielectric photonic crystal is reported in this work. Based on this concept, directional cloak is designed that conceals a larger dimensional scattering object against the normal incident, linearly polarizedelectromagnetic waves. Advanced Electromagnetics 2013-12-12 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/159 10.7716/aem.v2i1.159 Advanced Electromagnetics; Vol. 2 No. 1 (2013); 85-88 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/159/pdf_17

oai:ojs.aempublisher.org:article/162 2026-04-04T20:52:59Z AEM:ART driver

Realization of THz Band Mixer Using Graphene Ghasemi Mizuji, E. Abdolali, A. Aghamohamadi, F. Danaeifar, M. Hashemi, S. Nikooei Tehrani, K. Mixer Graphene Terahertz Nonlinear property Nano scale circuits In this article a new method for creating mixer component in infrared and THz is suggested. Since the nonlinear property of admittance creates frequency components that do not exist in the input signal and the electrical conductivity is associated with admittance, in our work we have proven and simulated that the nonlinear property of graphene admittance can produce mixer component. The simulation results show that the mixer component is larger than other components, therefore the mixer works properly. Because of nano scale of graphene structure, this method paves the road to achieve super compact circuits. Advanced Electromagnetics 2014-05-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/162 10.7716/aem.v3i1.162 Advanced Electromagnetics; Vol. 3 No. 1 (2014); 15-19 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/162/pdf_21

oai:ojs.aempublisher.org:article/169 2026-04-04T20:52:59Z AEM:ART driver

Electromagnetic field in matter. Surface enhanced Raman scattering Apostol, M. Ilie, S. Petrut, A. Savu, M. Toba, S. Raadiation Antennas EMC The polarization and magnetization degrees of freedom are included in the general treatment of the electromagnetic field in matter, and their governing equations are given. Particular cases of solutions are discussed for polarizable, non-magnetic matter, including quasi-static fields, surface plasmons, propagation, zero-point fluctuations of the eigenmodes, especially for a semi-infinite homogeneous body (half-space). The van der Waals London-Casimir force acting between a neutral nano-particle and a half-space is computed and the response of this electromagnetically coupled system to an external field is given, with relevance for the surface enhanced Raman scattering. Advanced Electromagnetics 2013-10-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/169 10.7716/aem.v2i2.169 Advanced Electromagnetics; Vol. 2 No. 2 (2013); 31-40 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/169/pdf_13

oai:ojs.aempublisher.org:article/170 2026-04-04T20:52:59Z AEM:ART driver

Broadband Spectroscopy of Nanoporous-Gold Promoter Nakatani, S. K. Han, Y.-H. Takahashi, T. Awano, T. Spectroscopy NPG Plasmonic Promoter The efficiency of UV photocatalysis on TiO2 particles was increased by mixing TiO2 particles with nanoporous gold (NPG) with pore diameters of 10–40 nm. This means that NPG acts as a promoter in the photocatalytic reaction of TiO2. Broadband spectroscopic results from millimeter wave to ultra violet of NPG membrane are discussed to estimate plasmonic effect on the catalysis. Advanced Electromagnetics 2014-02-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/170 10.7716/aem.v2i3.170 Advanced Electromagnetics; Vol. 2 No. 3 (2013); 5-10 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/170/pdf_19

oai:ojs.aempublisher.org:article/171 2026-04-04T20:52:59Z AEM:ART driver

Finite Difference Time-Domain Modelling of Metamaterials: GPU Implementation of Cylindrical Cloak Dawood, A. FDTD Metamaterials GPU Cloak Finite difference time-domain (FDTD) technique can be used to model metamaterials by treating them as dispersive material. Drude or Lorentz model can be incorporated into the standard FDTD algorithm for modelling negative permittivity and permeability. FDTD algorithm is readily parallelisable and can take advantage of GPU acceleration to achieve speed-ups of 5x-50x depending on hardware setup. Metamaterial scattering problems are implemented using dispersive FDTD technique on GPU resulting in performance gain of 10x-15x compared to conventional CPU implementation. Advanced Electromagnetics 2013-08-03 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/171 10.7716/aem.v2i2.171 Advanced Electromagnetics; Vol. 2 No. 2 (2013); 10-17 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/171/pdf_7

oai:ojs.aempublisher.org:article/175 2026-04-04T20:52:59Z AEM:ART driver

Scattering forces on magneto-dielectric particles and the electromagnetic momentum density Marques, M. I. Saenz, J. J. Optical Scattering forces Electromagnetic Linear Momentum In this paper we analyze the non-conservative forces on  magneto-dielectric particles in special configurations where  the scattering force is not proportional to the average value  of the Poynting vector. Based on these results, we revisit  the concept of electromagnetic momentum density. Advanced Electromagnetics 2013-09-25 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/175 10.7716/aem.v2i2.175 Advanced Electromagnetics; Vol. 2 No. 2 (2013); 26-30 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/175/290

oai:ojs.aempublisher.org:article/176 2026-04-04T20:52:59Z AEM:ART driver

Computational Finite Element Software Assisted Development of a 3D Inductively Coupled Power Transfer System Raval, P. Kacprzak, D. Hu, A. Patrick magnetics induction wireless To date inductively coupled power transfer (ICPT) systems have already found many practical applications including battery charging pads. In fact, current charging platforms tend to largely support only one- or two-dimensional planar movement in load. This paper proposes a new concept of extending the aspect ratios of the operating power transfer volume of ICPT systems to support arbitrary three dimensional load movements with respect to the primary coils. This is done by use of modern finite element method analysis software to propose the primary and secondary magnetic structures of such an ICPT system. Firstly, two primary magnetic structures are proposed based on contrasting modes of operation and different field directions. This includes a single-phase and multi-phase current model. Next, a secondary magnetic structure is customized to be compatible with both primary structures. The resulting system is shown to produce a 3D power transfer volume for battery cell charging applications. Advanced Electromagnetics 2014-02-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/176 10.7716/aem.v2i3.176 Advanced Electromagnetics; Vol. 2 No. 3 (2013); 11-18 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/176/pdf_20

oai:ojs.aempublisher.org:article/184 2026-04-04T20:52:59Z AEM:ART driver

Effects of RF/MW Exposure from Mobile-phone Base-Stations on the Growth of Green Mint Plant using Chl a Fluorescence Emission Kafi, S. T. Ahmed, A. M. Sabah-Alkhair, M. K. Mohamed, D. A. Ahmed, R. S. Hassaan, Z. O. RF/MW Radiation Effects Mobile Phone Base station We report on the effects of RF/MW on plants.Green Mint plant exposed to different levels ofradiation (from 0.5 to 10.5 μW/cm2) for thispurpose. A USB2000 spectrophotometer wasused to record fluorescence signals from intactleaves.Spectroscopic data (P.I.R and A.R)together with vegetative data (leafdimensions and weight), revealed stressingeffects on plant due to RF/MW in all groupsexcept the control which was free of exposure. Advanced Electromagnetics 2014-04-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/184 10.7716/aem.v3i1.184 Advanced Electromagnetics; Vol. 3 No. 1 (2014); 11-14 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/184/pdf_30

oai:ojs.aempublisher.org:article/185 2026-04-04T20:52:59Z AEM:ART driver

Resonance of Superconducting Microstrip Antenna with Aperture in the Ground Plane Benkouda, S. Fortaki, T. Amir, M. Benghalia, A. Resonance Microstrip antenna Aperture This paper presents a rigorous full-wave analysis of a high Tc superconducting rectangular microstrip antenna with a rectangular aperture in the ground plane. To include the effect of the superconductivity of the microstrip patch in the full-wave analysis, a complex surface impedance is considered. The proposed approach is validated by comparing the computed results with previously published data. Results showing the effect of the aperture on the resonance of the superconducting microstrip antenna are given. Advanced Electromagnetics 2013-08-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/185 10.7716/aem.v2i2.185 Advanced Electromagnetics; Vol. 2 No. 2 (2013); 22-25 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/185/287

oai:ojs.aempublisher.org:article/186 2026-04-04T20:52:59Z AEM:ART driver

Resonance of High Tc Superconducting Microstrip Patch in a Substrate-Superstrate Configuration Benkouda, S. Fortaki, T. Amir, M. Benghalia, A. Resonance Microstrip antenna Superstrate The effect of a protecting dielectric superstrate on the resonance of a high Tc superconducting microstrip patch is investigated. The analysis approach is based on the spectral-domain method of moments in conjunction with the complex resistive boundary condition. The complex surface impedance of the superconducting thin film is determined using London’s equation and the two-fluid model of Gorter and Casimir. Numerical results show that the resonant frequency of the high Tc superconducting rectangular patch decreases monotonically with increasing superstrate thickness, the decrease being greater for high permittivity loading. Advanced Electromagnetics 2014-02-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/186 10.7716/aem.v2i3.186 Advanced Electromagnetics; Vol. 2 No. 3 (2013); 19-21 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/186/pdf_22

oai:ojs.aempublisher.org:article/189 2026-04-04T20:52:59Z AEM:ART driver

Tunable Nanoplasmonics Swillam, M. Ismail, Y. Kotb, R. plasmonics nanophotonics In this paper, we present novel mechanisms for tuning and controlling the response of novel plasmonic filter using metal-insulator-metal (MIM) configuration. These mechanisms allow for full control on the transmission response from these waveguide based structures. This control can be done electrically or mechanically. The applications and advantages of these novel schemes are discussed in details. Wideband tuning range has been obtained using these schemes. Advanced Electromagnetics 2013-07-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/189 10.7716/aem.v2i2.189 Advanced Electromagnetics; Vol. 2 No. 2 (2013); 1-5 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/189/pdf_3

oai:ojs.aempublisher.org:article/192 2026-04-04T20:52:59Z AEM:ART driver

A Novel Microwave Coaxial Slot Antenna for Liver Tumor Ablation Acikgoz, H. Turer, İ. Microwave coaxial antenna Biological tissue This paper is on the effect of a T-ring shape structure to enhance the capability of a microwave coaxial slot antenna (MCA) in the treatment of liver cancer. The MCA is composed of an interstitial coaxial line that is enclosed in a catheter. The T-ring shape structure is wrapped on the outer conductor of the MCA. Thanks to the new structure, the backward heating problem appearing in many coaxial antennas is reduced and the generated heat in front of the slot is higher than those for a classical MCA. Advanced Electromagnetics 2014-05-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/192 10.7716/aem.v3i1.192 Advanced Electromagnetics; Vol. 3 No. 1 (2014); 20-25 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/192/pdf_31

oai:ojs.aempublisher.org:article/194 2026-04-04T20:52:59Z AEM:ART driver

Resonant Frequency of Tunable Microstrip Ring Antenna Printed on Isotropic or Uniaxially Anisotropic Substrate Bedra, S. Benkouda, S. Amir, M. Fortaki, T. Microstrip Ring Antenna In this study, the resonant frequency of annular ring microstrip resonator with uniaxial anisotropic substrate and air gap layer is analyzed. The cavity model for simple ring microstrip antenna is extended with some modifications for the tunable geometry taking into account the anisotropy in the layer. The theoretical resonant frequency results are in very good agreement with the experimental results reported elsewhere. The air gap tuning effect on the resonant characteristics is also investigated for fundamental and higher order modes. Advanced Electromagnetics 2013-08-03 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/194 10.7716/aem.v2i2.194 Advanced Electromagnetics; Vol. 2 No. 2 (2013); 6-9 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/194/292

oai:ojs.aempublisher.org:article/195 2026-04-04T20:52:59Z AEM:ART driver

Wave Concept Iterative Procedure Analysis of Patch Antennas on Nanostructured Ceramic Substrates Silva Neto, V. D'Assunção, A. Vasconcelos, C. Lins de Albuquerque, M. R. Wave Concept Iterative Antenna Nanostructured Ceramic The wave concept iterative procedure (WCIP) is proposed to analyze rectangular and circular patch antennas on nanostructured ceramic substrates. Principles of WCIP are described and advantages are emphasized. The analysis of microstrip antennas on double layered substrates is performed in space and spectral domains. In addition, Fast Fourier Transformation (FFT) is used to improve the efficiency of the method. WCIP simulated results are compared to HFSS software ones. A good agreement is observed. Advanced Electromagnetics 2014-02-10 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/195 10.7716/aem.v2i3.195 Advanced Electromagnetics; Vol. 2 No. 3 (2013); 1-4 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/195/pdf_18

oai:ojs.aempublisher.org:article/198 2026-04-04T20:52:59Z AEM:ART driver

Proposal of C-core Type Transverse Flux Motor for Ship Propulsion – Increasing Torque Density by Dense Stator Configuration – Yamamoto, Y. Koseki, T. Aoyama, Y. Electric Machine AC Machine Transverse Flux Machine TFM Electric Ship Direct-drive Motor DDM Electric ship propulsion system has been drawing attention as a solution for savings in energy and maintenance costs. The system is mainly composed of motor, converter and gearbox and required for high torque at low speed. In this situation, transverse flux motors (TFMs) have been proposed to fulfill the low-speed high-torque characteristic due to suitable for short pole pitch and large number of poles to increase torque output. In this trend, we have proposed C-core type motors taking advantage of TFMs’ structure. In this manuscript, a simple design method based on the magnetic-circuit theory and simple modeling of the motor is proposed to search a design parameter for maximizing torque as a pre-process of numerical study. The method takes into consideration the effects of magnetic leakage flux, magnetic saturation and pole-core combination in accordance with the systematic theory. The simple modeling is conducted based on a dense armature structure in previous axial flux motors (AFMs) applied to the new motor design. The validity of the method is verified by 3-D finite element analysis (FEA) and relative error is at most 20%. The minimalist design is shown to be advantageous for effective use in 3-D FEA. As a detailed design by the FEA, high torque density and low cogging to output ratio can be achieved simultaneously in the proposed machine. Advanced Electromagnetics 2014-02-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/198 10.7716/aem.v2i3.198 Advanced Electromagnetics; Vol. 2 No. 3 (2013); 28-34 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/198/pdf_24

oai:ojs.aempublisher.org:article/201 2026-04-04T20:52:59Z AEM:ART driver

Dual Band Gap Coupled Antenna Design with DGS for Wireless Communications Kandwal, A. Sharma, R. Khah, S. K. Microstrip gap coupled wireless defected ground dual wideband A novel gap coupled dual band multiple ring antenna with a defected ground structure (DGS) has been successfully implemented. A different technique is used in this communication where both gap coupling and defected ground are applied to obtain better results for wireless applications. The designed antenna operates in two different frequency bands. The antenna shows a wideband in C-band and also resonates in the X-band. The main parameters like return loss, impedance bandwidth, radiation pattern and gain are presented and discussed. The gain is increased and the side lobe level is considerably reduced to a good extent. Designed antenna is tested and the results show that the simulation and experimental results are in good agreement with each other. Advanced Electromagnetics 2014-02-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/201 10.7716/aem.v2i3.201 Advanced Electromagnetics; Vol. 2 No. 3 (2013); 51-58 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/201/pdf_27

oai:ojs.aempublisher.org:article/210 2026-04-04T20:52:59Z AEM:ART driver

Fabrication and characterization of micro-inductors deposited on magnetic thin and thick layers Désiré, A. Kriga, A. Youssouf, M. Siblini, A. Jean-Pierre, C. M. Blanc-Mignon, M.-F. Payet-Gervy, B. Piot, A. Dufeu, D. Rousseau, J.-J. micro-inductors magnetic layers This paper presents two fabrication techniques of spiral integrated inductors based on magnetic materials. For the first one, the magnetic core is a thin film deposited by RF magnetron sputtering, for the second technique the magnetic core is a thick layer of YIG obtained by micromachining. The addition of the magnetic material is expected to improve the performances of the integrated structure with electromagnetic shield. Low and high frequency equipment are used to characterize the manufactured components. A good correlation is obtained between the results by simulation and measurements for the two manufacturing techniques. These results show that the inductance increases when the thickness of the magnetic layer increases, we can double the inductance value for a thickness sufficiently high. Advanced Electromagnetics 2014-02-18 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/210 10.7716/aem.v2i3.210 Advanced Electromagnetics; Vol. 2 No. 3 (2013); 44-50 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/210/pdf_26

oai:ojs.aempublisher.org:article/218 2026-04-04T20:52:59Z AEM:ART driver

Electric and Magnetic Coulomb Potentials in the Deuteron Schaeffer, Bernard Deuteron Coulomb's laws Nuclear Energy After one century of nuclear physics, the underlying fun- damental laws of nuclear physics are still missing. Bohr had found a formula for the H atom and another for the H2 molecule but no equivalent formula exists for the deuteron 2H. The only known Coulomb interaction in a nucleus by the mainstream nuclear physics is the long range repulsion between protons, forgetting that the neutron contains elec- tric charges with no net charge. The neutron is attracted by the proton in a way discovered two millenaries ago by the Greeks. This attraction is equilibrated by the repulsion between the opposite magnetic moments of the proton and of the neutron in the deuteron. The bare application of ge- ometry together with electric and magnetic Coulomb’s in- teractions accounts for the binding energy of the deuteron, without fitting, with only 4 per cent discrepancy, proving the electromagnetic nature of the nuclear energy.  Advanced Electromagnetics 2013-09-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/218 10.7716/aem.v2i1.218 Advanced Electromagnetics; Vol. 2 No. 1 (2013); 69-72 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/218/pdf_12

oai:ojs.aempublisher.org:article/222 2026-04-04T20:52:59Z AEM:ART driver

Propagation Characteristics of Multilayer Hybrid Insulator-Metal-Insulator and Metal-Insulator-Metal Plasmonic Waveguides Talafi Noghani, M. Vadjed Samiei, M. H. Nanophotonics Plasmonics Surface Plasmon Polaritons Propagation characteristics of symmetrical and asymmetrical multilayer hybrid insulator-metal-insulator (HIMI) and metal-insulator-metal (HMIM) plasmonic slab waveguides are investigated using the transfer matrix method. Propagation length (Lp) and spatial length (Ls) are used as two figures of merit to qualitate the plasmonic waveguides. Symmetrical structures are shown to be more performant (having higher Lp and lower Ls), nevertheless it is shown that usage of asymmetrical geometry could compensate for the performance degradation in practically realized HIMI waveguides with different substrate materials. It is found that HMIM slab waveguide could support almost long-range subdiffraction plasmonic modes at dimensions lower than the spatial length of the HIMI slab waveguide. Advanced Electromagnetics 2014-02-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/222 10.7716/aem.v2i3.222 Advanced Electromagnetics; Vol. 2 No. 3 (2013); 35-43 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/222/pdf_25

oai:ojs.aempublisher.org:article/230 2026-04-04T20:52:59Z AEM:ART driver

Dual-Band Coherent Perfect Absorption/Thermal Feng, S. ENZ Absorption Metamaterials Dual-band perfect absorption/thermal emission is shown to be a general property of an ultrathin bilayer consisting of a dielectric and a totally reflective layer if the permittivity of the dielectric can be described by Drude-Lorentz (DL) model.  The two bands coexist and reside on opposite sides of the Lorentzian resonant frequency where the material loss is small.  However, the perfect absorption mechanism for the two bands is distinguishably different.  One band is related to Fabry-Perot phenomenon and the surge of refractive index near the Lorentzian resonance.  This band is polarization insensitive.  The other band is associated with excitation of Brewster-type mode at the ϵ-near-zero (ENZ) wavelength and occurs only for p-polarized wave at oblique incidences.  This mode has a fast-wave non-radiative character and propagates along the ultrathin ENZ layer superimposed on the highly reflective surface.  Both bands exhibit wide-angle high emission with a small shift in their center frequencies which can be tuned by tuning the Lorentzian resonance.  The resonance-enhanced dual band absorption occurs in the ultrathin DL layer at the weakly absorbing wavelengths as a consequence of an interaction between the total transmission and the total reflection.  We demonstrate this phenomenon in a silicon carbide/copper bilayer.  The suggested structure may have applications in biological and chemical sensors, IR sensors, thermal emission controls, thermophotovoltaics, and photodetectors. Advanced Electromagnetics 2014-02-15 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/230 10.7716/aem.v2i3.230 Advanced Electromagnetics; Vol. 2 No. 3 (2013); 22-27 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/230/pdf_23

oai:ojs.aempublisher.org:article/235 2026-04-04T20:52:59Z AEM:ART driver

Interaction of Active MMIC with Package/Housing -Theory, Analysis and Measurement Sarvaiya, A. Gupta, S. Ghodgaonkar, D. Housing MMIC Radiation Packging This paper presents enclosure effect comprehensive by 3D Electromagnetic modeling, simulation and measurement of active MMIC with Package/housing. When put inside a test box or package with a cavity, MMIC shows significant deviation from it RFOW measurement data. Cavity resonance’s adverse effects are analyzed by Eigen mode solver using CST Microwave Studio and RFOW measurement and in test box data is matched by simulating package/house with the best suited RF absorbers. Advanced Electromagnetics 2014-09-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/235 10.7716/aem.v3i1.235 Advanced Electromagnetics; Vol. 3 No. 1 (2014); 26-30 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/235/pdf_32

oai:ojs.aempublisher.org:article/239 2026-04-04T20:52:59Z AEM:ART driver

Design methodology to enhance high impedance surfaces performances Grelier, M. Lepage, A. C. Begaud, X. Jousset, M. Mallégol, S. Microwave engineering Metamaterials High Impedance Surface Artificial Magnetic Conductor A methodology is introduced for designing wideband, compact and ultra-thin high impedance surfaces (HIS). A parametric study is carried out to examine the effect of the periodicity on the electromagnetic properties of an HIS. This approach allows designers to reach the best trade-off for HIS performances. Advanced Electromagnetics 2014-04-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/239 10.7716/aem.v3i1.239 Advanced Electromagnetics; Vol. 3 No. 1 (2014); 8-10 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/239/286

oai:ojs.aempublisher.org:article/242 2026-04-04T20:52:59Z AEM:ART driver

Far-field flat lens based on multilayered metal- dielectric structure Belyi, V. N. Binhussain, M. Khilo, N. A. Kazak, N. S. Flat lens Nanooptics Metal-dielectric structure The detailed investigation has been made of the lens effect in plane multilayered metal-dielectric structures (Ag-TiO2). The optical scheme of the lens has been studied with the radiation focusing in free space. The transfer function is calculated, where the phase profile determines definitely the possibility of focusing. The condition for far-field image formation is found using a flat lens. This condition is used for a numerical simulation of several lens designs with a various number of metal layers. It is found that considered flat lenses have close to limiting angular aperture and therefore the subwavelength resolution. It is established that at increase of a number of metal layers the object and image distances grow. Advanced Electromagnetics 2014-10-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/242 10.7716/aem.v3i2.242 Advanced Electromagnetics; Vol. 3 No. 2 (2014); 1-5 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/242/pdf_39

oai:ojs.aempublisher.org:article/243 2026-04-04T20:52:59Z AEM:ART driver

Interaction of Bessel Light Beams with Epsilon-near-zero Metamaterials Kurilkina, S. Binhussain, M. Belyi, V. Kazak, N. Metamaterials light beams plasmon polaritons The article explores possibilities and conditions of generation of a new type of diffraction-free needle-like field Bessel plasmon polaritons (BPPs) with super narrow cone angle in an epsilon-near-zero metamaterial, surrounded by semi-infinite dielectric media. Correct analytical expressions are obtained and analyzed in detail for the electric and magnetic fields of BPPs formed inside and outside the metamateral slab. Advanced Electromagnetics 2014-10-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/243 10.7716/aem.v3i1.243 Advanced Electromagnetics; Vol. 3 No. 1 (2014); 44-49 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/243/pdf_34

oai:ojs.aempublisher.org:article/245 2026-04-04T20:52:59Z AEM:ART driver

Investigation of surface roughness influence on hyperbolic metamaterial performance Kozik, S. Binhussain, M. A. Smirnov, A. Khilo, N. Agabekov, V. Metamaterials Surface Roughness FDTD The main goal of this work was to introduce simple model of surface roughness which does not involve objects with complicated shapes and could help to reduce computational costs. We described and proved numerically that the influence of surface roughness at the interfaces in metal-dielectric composite materials could be described by proper selection of refractive index of dielectric layers. Our calculations show that this model works for roughness with RMS value about 1 nm and below. Advanced Electromagnetics 2014-12-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/245 10.7716/aem.v3i2.245 Advanced Electromagnetics; Vol. 3 No. 2 (2014); 6-9 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/245/pdf_40

oai:ojs.aempublisher.org:article/253 2026-04-04T20:52:59Z AEM:ART driver

Investigations and Simulations of All optical Switches in linear state Based on Photonic Crystal Directional Coupler Maktoobi, S. Ghayour, R. Optical Switches Photonic Crystals Directional Coupler Switching is a principle process in digital computers and signal processing systems. The growth of optical signal processing systems, draws particular attention to design of ultra-fast optical switches. In this paper, All Optical Switches in linear state Based On photonic crystal Directional coupler is analyzed and simulated. Among different methods, the finite difference time domain method (FDTD) is a preferable method and is used. We have studied the application of photonic crystal lattices, the physics of optical switching and photonic crystal Directional coupler. In this paper, Electric field intensity and the power output that are two factors to improve the switching performance and the device efficiency are investigated and simulated. All simulations are performed by COMSOL software. Advanced Electromagnetics 2014-10-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/253 10.7716/aem.v3i1.253 Advanced Electromagnetics; Vol. 3 No. 1 (2014); 66-70 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/253/pdf_38

oai:ojs.aempublisher.org:article/254 2026-04-04T20:52:59Z AEM:ART driver

Improved Formulae for the Inductance of Straight Wires Aebischer, H. A. Aebischer, B. inductance partial inductance mutual inductance self-inductance round wire circular cross section geometric mean distance GMD arithmetic mean distance AMD arithmetic mean square distance AMSD QC669-675.8 The best analytical formulae for the self-inductance of rectangular coils of circular cross section available in the literature were derived from formulae for the partial inductance of straight wires, which, in turn, are based on the well-known formula for the mutual inductance of parallel current filaments, and on the exact value of the geometric mean distance (GMD) for integrating the mutual inductance formula over the cross section of the wire. But in this way, only one term of the mutual inductance formula is integrated, whereas it contains also other terms. In the formulae found in the literature, these other terms are either completely neglected, or their integral is only coarsely approximated. We prove that these other terms can be accurately integrated by using the arithmetic mean distance (AMD) and the arithmetic mean square distance (AMSD) of the wire cross section. We present general formulae for the partial and mutual inductance of straight wires of any cross section and for any frequency based on the use of the GMD, AMD, and AMSD. Since partial inductance of single wires cannot be measured, the errors of the analytical approximations are computed with the help of exact computations of the six-dimensional integral defining induction. These are obtained by means of a coordinate transformation that reduces the six-dimensional integral to a three-dimensional one, which is then solved numerically. We give examples of an application of our analytical formulae to the calculation of the inductance of short-circuited two-wire lines. The new formulae show a substantial improvement in accuracy for short wires. Advanced Electromagnetics 2014-09-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/254 10.7716/aem.v3i1.254 Advanced Electromagnetics; Vol. 3 No. 1 (2014); 31-43 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/254/pdf_33

oai:ojs.aempublisher.org:article/255 2026-04-04T20:52:59Z AEM:ART driver

Application of Teaching Learning Based Optimization in antenna designing Dwivedi, S. Mishra, V. Kosta, Y. Optimization antenna Numerous optimization techniques are studied and applied on antenna designs to optimize various performance parameters. Authors used many Multiple Attributes Decision Making (MADM) methods, which include, Weighted Sum Method (WSM), Weighted Product Method (WPM), Technique for Order Preference by Similarity to Ideal Solution (TOPSIS), Analytic Hierarchy Process (AHP), ELECTRE, etc. Of these many MADM methods, TOPSIS and AHP are more widely used decision making methods. Both TOPSIS and AHP are logical decision making approaches and deal with the problem of choosing an alternative from a set of alternatives which are characterized in terms of some attributes. Analytic Hierarchy Process (AHP) is explained in detail and compared with WSM and WPM. Authors fi- nally used Teaching-Learning-Based Optimization (TLBO) technique; which is a novel method for constrained antenna design optimization problems. Advanced Electromagnetics 2015-07-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/255 10.7716/aem.v4i1.255 Advanced Electromagnetics; Vol. 4 No. 1 (2015); 68-73 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/255/pdf_55

oai:ojs.aempublisher.org:article/257 2026-04-04T20:52:59Z AEM:ART driver

Does the electromotive force (always) represent work? Papachristou, C. J. Magoulas, A. N. Electromotive Work Circuit In the literature of Electromagnetism, the electromotive force of a "circuit" is often defined as work done on a unit charge during a complete tour of the latter around the circuit. We explain why this statement cannot be generally regarded as true, although it is indeed true in certain simple cases. Several examples are used to illustrate these points. Advanced Electromagnetics 2015-03-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/257 10.7716/aem.v4i1.257 Advanced Electromagnetics; Vol. 4 No. 1 (2015); 10-15 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/257/pdf_44

oai:ojs.aempublisher.org:article/258 2026-04-04T20:52:59Z AEM:ART driver

Calculation of harmonic losses and ampacity in low-voltage power cables when used for feeding large LED lighting loads Milardovich, N. J. Prevosto, L. Lara, M. A. LED loads harmonic disturbances A numerical investigation on the harmonic disturbances in low-voltage cables feeding large LED loads is reported. A frequency domain analysis on several commercially-available LEDs was performed to investigate the signature of the harmonic current injected into the power system. Four-core cables and four single-core cable arrangements (three phases and neutral) of small, medium, and large conductor cross sections, with the neutral conductor cross section approximately equal to the half of the phase conductors, were examined. The cables were modelled by using electromagnetic finite-element analysis software. High harmonic power losses (up to 2.5 times the value corresponding to an undistorted current of the same rms value of the first harmonic of the LED current) were found. A generalized ampacity model was employed for re-rating the cables. It was found that the cross section of the neutral conductor plays an important role in the derating of the cable ampacity due to the presence of a high-level of triplen harmonics in the distorted current. The ampacity of the cables should be derated by about 40 %, almost independent of the conductor cross sections. The calculation have shown that an incoming widespread use of LED lamps in lighting could create significant additional harmonic losses in the supplying low-voltage lines, and thus more severely harmonic emission limits should be defined for LED lamps. Advanced Electromagnetics 2014-10-23 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/258 10.7716/aem.v3i1.258 Advanced Electromagnetics; Vol. 3 No. 1 (2014); 50-56 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/258/pdf_35

oai:ojs.aempublisher.org:article/259 2026-04-04T20:52:59Z AEM:ART driver

Analytical Solution for Elliptical Cloaks Based on The Frequency Selective Surface Ghasemi Mizuji, E. Abdolali, A. Derafshi, I. Cloak FSS In this paper the elliptical dielectric cylinder which is covered with FSS cloak is considered. Frequency selective surface cloak which Alu named it mantle cloak is one of the recent techniques for cloaking. In this method an appropriate FSS can act as cloaking device for suppressing  the scattering of object  in the desired frequency. With using this method the dimension of the cloaks is extremely reduced. By this proposed structure, the RCS of elliptical cylinder  is reduced about 10-20 dB and designed cloak has an appropriate performance.  The analytical solution for the wave in each layer is presented and with using simulation, the electric field and the scattering pattern has been drawn. Advanced Electromagnetics 2015-01-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/259 10.7716/aem.v3i2.259 Advanced Electromagnetics; Vol. 3 No. 2 (2014); 16-20 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/259/pdf_42

oai:ojs.aempublisher.org:article/264 2026-04-04T20:52:59Z AEM:ART driver

A Generalized case of Electromagnetic Scattering from a finite number of Ferromagnetic cylinders Kumar, T. Kalyanasundaram, N. Lande, B. K. Boundary conditions Ferromagnetic microwire Metamaterials Scattering A generalized solution of the scattering problem from an array containing a finite number of axially magnetized ferromagnetic cylinders of infinite length placed in free space is presented in this paper. The analysis is carried out by matching the tangential boundary conditions at the surface of each cylinder to find the unknown expansion coefficients of the scattered field. Planar arrays consist of a finite number of ferromagnetic microwires are considered to obtain the numerical results for TMz and TEz polarizations in terms of the variation in scattered field components of the near field and scattering cross section (SCS) with respect to angle of incidence, radius of microwires, spacing among the microwires and operating frequency. For validation purpose, numerical results of the proposed analysis specialized for the case of single microwire and normal incidence for TMz polarization are compared with the results available in the literature for the specialized case and both are found to be matched completely. Advanced Electromagnetics 2015-11-28 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/264 10.7716/aem.v4i3.264 Advanced Electromagnetics; Vol. 4 No. 3 (2015); 8-16 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/264/pdf_60 Copyright (c) 2015 T. Kumar, N. Kalyanasundaram, B. K. Lande

oai:ojs.aempublisher.org:article/265 2026-04-04T20:52:59Z AEM:ART driver

Modeling the Non Linear Behavior of a Magnetic Fault Current Limiter Wilson, P. R. Fault Current Limiter Behavioural Modeling Magnetic Material Modeling Fault Current Limiters are used in a wide array of applications from small circuit protection at low power levels to large scale high power applications which require superconductors and complex control circuitry. One advantage of  passive fault current limiters (FCL) is the automatic behavior that is dependent on the intrinsic properties of the circuit elements rather than on a complex feedback control scheme making this approach attractive for low cost applications and also where reliability is critical. This paper describes the behavioral modeling of a passive Magnetic FCL and its potential application in practical circuits. Advanced Electromagnetics 2015-11-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/265 10.7716/aem.v4i3.265 Advanced Electromagnetics; Vol. 4 No. 3 (2015); 1-7 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/265/pdf_61 Copyright (c) 2015 P. R. Wilson

oai:ojs.aempublisher.org:article/266 2026-04-04T20:53:00Z AEM:ART driver

New SERS-active junction based on cerium dioxide facet dielectric films for biosensing Kurochkin, I. Ryzhikov, I. Sarychev, A. Afanasiev, K. Budashov, I. Sedova, M. Boginskaya, I. Amitonov, S. Lagarkov, A. Metamaterials SERS plasmonic nanoparticles local fields biosensing Further enhance of the Raman scattering is the priority for the development of the modern molecular diagnostic methods. Expected increasing in detection sensitivity of the biological and chemical agents provides substantial progress in such areas as: proteomics (discovery of new disease markers), pharmacokinetics of drugs, analysis of toxins and infections agents, drug analysis, food safety, and environmental safety. In this paper we investigated the possibility of the facet structures, based on cerium dioxide to further enhance the SERS signal. During the studies a new metamaterial was developed. The metamaterial is based on the facet cerium dioxide films and plasmonic nanoparticles that are immobilized on its surface. The new metamaterial provides additional SERS signal amplification factor of 211. Thus developed material offers the prospect of increasing the sensitivity and selectivity of biochemical and immunological analysis. Advanced Electromagnetics 2014-10-23 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/266 10.7716/aem.v3i1.266 Advanced Electromagnetics; Vol. 3 No. 1 (2014); 57-60 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/266/pdf_36

oai:ojs.aempublisher.org:article/267 2026-04-04T20:53:00Z AEM:ART driver

High Efficiency Ka-Band Spatial Combiner Passi, D. Leggieri, A. Di Paolo, F. Bartocci, M. Tafuto, A. Manna, A. Finite elements fin-line structures microwave components MMIC technology spatial power A Ka-Band, High Efficiency, Small Size Spatial Combiner (SPC) is proposed in this paper, which uses an innovatively matched quadruple Fin Lines to microstrip (FLuS) transitions. At the date of this paper and at the Author's best knowledge no such FLuS innovative transitions have been reported in literature before. These transitions are inserted into a WR28 waveguide T-junction, in order to allow the integration of 16 Monolithic Microwave Integrated Circuit (MMIC) Solid State Power Amplifiers (SSPA's). A computational electromagnetic model using the finite elements method has been implemented. A mean insertion loss of 2 dB is achieved with a return loss better the 10 dB in the 31-37 GHz bandwidth. Advanced Electromagnetics 2014-12-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/267 10.7716/aem.v3i2.267 Advanced Electromagnetics; Vol. 3 No. 2 (2014); 10-15 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/267/pdf_41

oai:ojs.aempublisher.org:article/271 2026-04-04T20:53:00Z AEM:ART driver

Statistics of the electromagnetic response of a chaotic reverberation chamber Gros, J.-B. Kuhl, U. Legrand, O. Mortessagne, F. Picon, O. Richalot, E. Reverberation chamber EMC Wave scattering Random matrix theory This article presents a study of the electromagnetic re- sponse of a chaotic reverberation chamber (RC) in the pres- ence of losses. By means of simulations and of experi- ments, the fluctuations in the maxima of the field obtained in a conventional mode-stirred RC are compared with those in a chaotic RC in the neighborhood of the Lowest Useable Frequency (LUF). The present work illustrates that the uni- versal spectral and spatial statistical properties of chaotic RCs allow to meet more adequately the criteria required by the Standard IEC 61000-4-21 to perform tests of electro- magnetic compatibility. Advanced Electromagnetics 2015-11-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/271 10.7716/aem.v4i2.271 Advanced Electromagnetics; Vol. 4 No. 2 (2015); 38-43 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/271/pdf_59

oai:ojs.aempublisher.org:article/272 2026-04-04T20:53:00Z AEM:ART driver

Efficient Statistical Extraction of the Per-Unit-Length Capacitance and Inductance Matrices of Cables with Random Parameters Manfredi, P. Canavero, F. cables Cable bundles often exhibit random parameter variations due to uncertain or uncontrollable physical properties and wire positioning. Efficient tools, based on the so-called polynomial chaos, exist to rapidly assess the impact of such variations on the per-unit-length capacitance and inductance matrices, and on the pertinent cable response. Nevertheless, the state-of-the-art method for the statistical extraction of the per-unit-length capacitance and inductance matrices of cables suffers from several inefficiencies that hinder its applicability to large problems, in terms of number of random parameters and/or conductors. This paper presents an improved methodology that overcomes the aforementioned limitations by exploiting a recently-published, alternative approach to generate the pertinent polynomial chaos system of equations. A sparse and decoupled system is obtained that provides remarkable benefits in terms of speed, memory consumption and problem size that can be dealt with. The technique is thoroughly validated through the statistical analysis of two canonical structures, i.e. a ribbon cable and a shielded cable with random geometry and position. Advanced Electromagnetics 2015-05-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/272 10.7716/aem.v4i1.272 Advanced Electromagnetics; Vol. 4 No. 1 (2015); 22-30 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/272/pdf_47

oai:ojs.aempublisher.org:article/275 2026-04-04T20:53:00Z AEM:ART driver

Radiation Characteristics Enhancement of Dielectric Resonator Antenna Using Solid/Discrete Dielectric Lenses Malhat, H. A. E. Zainud-Deen, S. H. Hassan, W. M. Awadalla, K. H. lens antenna transmitarray DRA The radiation characteristics of the dielectric resonator antennas (DRA) is enhanced using different types of solid and discrete dielectric lenses. One of these approaches is by loading the DRA with planar superstrate, spherical lens, or by discrete lens (transmitarray). The dimensions and dielectric constant of each lens are optimized to maximize the gain of the DRA. A comparison between the radiations characteristics of the DRA loaded with different lenses are introduced. The design of the dielectric transmitarray depends on optimizing the heights of the dielectric material of the unit cell. The optimized transmitarray achieves 7 dBi extra gain over the single DRA with preserving the circular polarization. The proposed antenna is suitable for various applications that need high gain and focused antenna beam. Advanced Electromagnetics 2015-02-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/275 10.7716/aem.v4i1.275 Advanced Electromagnetics; Vol. 4 No. 1 (2015); 1-9 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/275/pdf_43

oai:ojs.aempublisher.org:article/277 2026-04-04T20:53:00Z AEM:ART driver

Design Formulas for Broadband Concentric Circular-Loops Antennas Ali Hamed, S. M. Osman, A. A. Antenna This paper presents a simple formulas for designing broadband concentric circular-loops antennas (CCLAs). The loop dimensions for widest bandwidth are expressented in terms of the resonance frequency of the driven loop. The analysis addresses both cases CCLAs with and without ground planes. The presented formulas are employed to design multiple CCLAs.  For example, a 3-elements CCLA of a maximum radius of 6.34 cm can be designed to operate with a voltage standing wave ratio (VSWR) < 2 over a frequencies band of a fractional bandwidth of 16.9% with a minimum directivity of 3.9 dB. Addionationally, a 4-elements CCLA of maximum radius of 15 cm can be design to operate in the frequency band extending from 825 MHz to 991 MHz (fractional bandwidth of 18.3%) with a VSWR < 2 and directivity higher than 5.2 dB over the entire band. Furthermore, the analysis shows that a 3-elements CCLA backed with a conducting ground plane improves the fractional bandwidth to 19.6% and directivity to 9.15 dB over the band of interest. The analytical results on designed antennas are validated with simulation results obtained by using the AN-SOF antenna simulation software. An excellent agreement is observed between analytical and AN-SOF simulations results. Advanced Electromagnetics 2015-06-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/277 10.7716/aem.v4i1.277 Advanced Electromagnetics; Vol. 4 No. 1 (2015); 45-51 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/277/pdf_51

oai:ojs.aempublisher.org:article/279 2026-04-04T20:53:00Z AEM:ART driver

Black Box Model of Integrated Circuits for ESD Behavioral Simulation and Industrial Application Case Lafon, F. Ramanujan, A. Fernandez-Lopez, P. ESD Modeling EMC Integrated circuit Pspice In order to design electronic products for Electro Static Discharges constraints, the use of simulation is fundamental. This is the only solution to justify the design and to manage properly the margin during the development. In order to do so, models are required and especially for the integrated circuits (IC). A Pspice model had been developed and validated for ESD performance prediction of IC implemented inside an electronic product. Nevertheless, the practical implementation of these modeling techniques for IC induced some issues, especially under Pspice, being the targeted tool for our simulation. Divergences issues during time domain simulation were frequently observed and sometimes irresolvable with model previously proposed. We propose in this article new implementation techniques in Pspice. A practical example is used to demonstrate the capability of our model. Advanced Electromagnetics 2015-11-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/279 10.7716/aem.v4i2.279 Advanced Electromagnetics; Vol. 4 No. 2 (2015); 26-37 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/279/pdf_58

oai:ojs.aempublisher.org:article/280 2026-04-04T20:53:00Z AEM:ART driver

Time-dependent sources identification for transmission lines problems Benoit, J. Bonnet, P. Chauvière, C. Girard, S. EMC transmission line source identification This paper is devoted to introduce an extension to the Linear Combination of Configuration Fields (LCCF). This new numerical method was designed to compute the time profile of an electromagnetic source radiating a specified electromagnetic field in all or part of the computational domain, for a specified duration. Here, we extend this idea within the framework of a transmission lines network. The principle of the method is first validated numerically. Then we prospect the same ideas in a real-data experiment which shows that the method is ready for real-life investigations. Advanced Electromagnetics 2015-10-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/280 10.7716/aem.v4i2.280 Advanced Electromagnetics; Vol. 4 No. 2 (2015); 9-16 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/280/pdf_56

oai:ojs.aempublisher.org:article/281 2026-04-04T20:53:00Z AEM:ART driver

Influence of the common mode impedance paths on the design of the EMI filters used with SiC-buck converter Kotny, J.-L. Duquesne, T. Idir, N. EMI filter DC-DC converter SiC components EMC standards This paper deals the design of EMI filter associated with buck converter using fast semiconductors silicon carbide SiC (diode and transistor JFET). To comply with EMC standards, a filter design method based on an equivalent electrical circuit is proposed. The aim is to identify the different values of the EMI filter elements but also to obtain the limits values of the parasitic elements of the passive components which have a major influence on the attenuation of the filters. The purpose is to study the influence of the modification of the common mode propagation paths before and after the installation of the filter. A solution is also proposed to reduce the conducted disturbances that occur at high frequency caused by the fast SiC components.The comparison of the simulation results with the measurements data carried out on a DC-DC converter without and with the EMI filter, shows the effectiveness of the proposed design approach. Advanced Electromagnetics 2015-12-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/281 10.7716/aem.v4i2.281 Advanced Electromagnetics; Vol. 4 No. 2 (2015); 44-53 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/281/pdf_63 Copyright (c) 2015 J.-L. Kotny, T. Duquesne, N. Idir

oai:ojs.aempublisher.org:article/283 2026-04-04T20:53:00Z AEM:ART driver

Transfer function fitting using a continuous Ant Colony Optimization (ACO) algorithm Reineix, A. Guiffaut, C. EMC Optimization An original approach is proposed in order to achieve the  fitting of ultra-wideband complex frequency functions, such  as the complex impedances, by using the so-called ACO  (Ant Colony Optimization) methods. First, we present the  optimization principle of ACO, which originally was  dedicated to the combinatorial problems. Further on, the  extension to the continuous and mixed problems is  explained in more details. The interest in this approach is  proved by its ability to define practical constraints and  objectives, such as minimizing the number of filters used in  the model with respect to a fixed relative error. Finally, the  establishment of the model for the first and second order  filter types illustrates the power of the method and its  interest for the time-domain electromagnetic computation. Advanced Electromagnetics 2015-03-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/283 10.7716/aem.v4i2.283 Advanced Electromagnetics; Vol. 4 No. 2 (2015); 1-8 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/283/pdf_45

oai:ojs.aempublisher.org:article/284 2026-04-04T20:53:00Z AEM:ART driver

New high order FDTD method to solve EMC problems Deymier, N. Volpert, T. Ferrieres, X. Mouysset, V. Pecqueux, B. EMC FDTD In electromagnetic compatibility (EMC) context, we are interested in developing new ac- curate methods to solve efficiently and accurately Maxwell’s equations in the time domain. Indeed, usual methods such as FDTD or FVTD present im- portant dissipative and/or dispersive errors which prevent to obtain a good numerical approximation of the physical solution for a given industrial scene unless we use a mesh with a very small cell size. To avoid this problem, schemes like the Discontinuous Galerkin (DG) method, based on higher order spa- tial approximations, have been introduced and stud- ied on unstructured meshes. However the cost of this kind of method can become prohibitive accord- ing to the mesh used. In this paper, we first present a higher order spatial approximation method on carte- sian meshes. It is based on a finite element ap- proach and recovers at the order 1 the well-known Yee’s schema. Next, to deal with EMC problem, a non-oriented thin wire formalism is proposed for this method. Finally, several examples are given to present the benefits of this new method by compar- ison with both Yee’s schema and DG approaches. Advanced Electromagnetics 2015-10-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/284 10.7716/aem.v4i2.284 Advanced Electromagnetics; Vol. 4 No. 2 (2015); 17-25 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/284/285

oai:ojs.aempublisher.org:article/288 2026-04-04T20:53:00Z AEM:ART driver

Dual-band Dipole Antenna for 2.45 GHz and 5.8 GHz RFID Tag Application Yu, Y. Ni, J. Xu, Z. RFID Dipole Antenna Dual Frequency Tag In this paper, a dual-band dipole antenna for passive radio frequency identification (RFID) tag application at 2.45 GHz and 5.8 GHz is designed and optimized using HFSS 13. The proposed antenna is composed of a bent microstrip patch and a coupled rectangular microstrip patch. The optimal results of this antenna are obtained by sweeping antenna parameters. Its return losses reach to -18.7732 dB and -18.2514 dB at 2.45 GHz and 5.8 GHz, respectively. The bandwidths (Return loss <=-10 dB) are 2.42~2.50 GHz and 5.77~5.82 GHz. And the relative bandwidths are 3.3% and 0.9%. It shows good impedance, gain, and radiation characteristics for both bands of interest. Besides, the input impedance of the proposed antenna may be tuned flexibly to conjugate-match to that of the IC chip. Advanced Electromagnetics 2015-06-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/288 10.7716/aem.v4i1.288 Advanced Electromagnetics; Vol. 4 No. 1 (2015); 31-35 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/288/pdf_48

oai:ojs.aempublisher.org:article/296 2026-04-04T20:53:00Z AEM:ART driver

RDOA based Emitter Localization using Constrained Least Square Algorithm under NLOS Environment Lee, K. Oh, J. You, K. Localization The emitter localization is a significant problem in many fields such as target tracking, wireless communication, radar and many types of mobile application; In this paper, we apply Kalman filter and constrained least square (CLS) algorithm for compensating these noises. With the proposed two algorithms, we can confirm high accuracy for localization. A simulation demonstrates the performance of our proposed algorithm. Advanced Electromagnetics 2015-07-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/296 10.7716/aem.v4i1.296 Advanced Electromagnetics; Vol. 4 No. 1 (2015); 59-62 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/296/pdf_53

oai:ojs.aempublisher.org:article/298 2026-04-04T20:53:00Z AEM:ART driver

Efficient methods for macroscopic magnetization simulation described by the assembly of simplified domain structure models Matsuo, T. Nakamura, T. Ito, S. Mifune, T. Kaido, C. magnetization This article presents two methods for the fast computation of macroscopic magnetization model called assembled domain structure model. First, an efficient method for computing the demagnetizing field is proposed. Secondly, a direct searching method of equilibrium point is developed, which greatly reduces the computation time. Advanced Electromagnetics 2015-05-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/298 10.7716/aem.v4i1.298 Advanced Electromagnetics; Vol. 4 No. 1 (2015); 16-21 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/298/pdf_46

oai:ojs.aempublisher.org:article/304 2026-04-04T20:53:00Z AEM:ART driver

Nano-Dielectric Resonator Antenna Reflectarray/Transmittarray for Terahertz Applications Malhat, H. A. Eltresy, N. A. Zainud-Deen, S. H. H. Awadalla, K. Nano antenna Reflectarray Transmitarray NDRA Nanoantennas have introduced wide bandwidth for fast data communications. The material properties of good conducting metals introduce plasmonic behavior at Terahertz frequencies. The material property of good conducting metals using Drude Lorentz model has been investigated. The radiation characteristics of nano-dielectric resonator antenna (NDRA) reflectarray at 633 nm have been investigated. A parametric study for the nano DRA unit cell dimensions and material has been introduced. A NDR with silver ground plane have been designed and analyzed. A nano-transmitarray unit-cell has been introduced for the analysis. A comparison between the radiation characteristics of 17×17 and 21×21 NDRA transmitarray has been given. A compromise between the nano-transmitarray size, maximum gain, and operating bandwidth is applied to Terahertz applications. The finite integral technique is used to carry a full wave analysis to design a NDRA reflectarray and a NDRA transmitarray. Advanced Electromagnetics 2015-06-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/304 10.7716/aem.v4i1.304 Advanced Electromagnetics; Vol. 4 No. 1 (2015); 36-44 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/304/pdf_49

oai:ojs.aempublisher.org:article/305 2021-03-10T13:11:01Z AEM:ART driver

Dual Polarized Monopole Patch Antennas for UWB Applications with Elimination of WLAN Signals Kumar, P. Masa-Campos, J. L. Antennas UWB WLAN This paper presents the design, fabrication and measurement of dual polarized microstrip patch antennas for ultra wideband (UWB) applications with notch at 5-6 GHz band. The proposed antenna rejects the wireless local area network (WLAN) signals and work properly in the entire remaining ultra-wideband. Two antennas are designed for two different frequency bands of ultra wideband and both antennas together produce the entire ultra wideband with notch at 5-6 GHz band. The antennas are fed by a 50 coaxial probe and the entire design is optimized using CST Microwave Studio. The bandwidth of 3.1-5 GHz is achieved by the optimized design of Antenna-1 and the bandwidth of 6 -10.6 GHz is achieved by the optimized design of Antenna-2. The bandwidth of the optimized combined antenna is 3.1-10.6 GHz with elimination of the 5-6 GHz band. Both antennas are simulated, developed and measured. The simulated and measured results are presented. The two designed dual polarized antennas i.e. Antenna-1 and Antenna-2 can be used for 3.1-5 GHz band and 6-10.6 GHz band dual polarized applications, respectively, and the combined antenna structure can be used for UWB dual polarized applications with elimination of 5-6 GHz band signals. Advanced Electromagnetics 2016-05-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/305 10.7716/aem.v5i1.305 Advanced Electromagnetics; Vol. 5 No. 1 (2016); 46-52 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/305/pdf Copyright (c) 2016 P. Kumar

oai:ojs.aempublisher.org:article/307 2026-04-04T20:53:00Z AEM:ART driver

All-optical switching using a new photonic crystal directional coupler Vakili, B. Bahadori-Haghighi, S. Ghayour, R. All-optical switch Nonlinear Kerr effect Photonic crystal Optical directional coupler In this paper all-optical switching in a new photonic crystal directional coupler is performed.  The structure of the switch consists of a directional coupler and a separate path for a control signal called “control waveguide”. In contrast to the former reported structures in which the directional couplers are made by removing a row of rods entirely, the directional coupler in our optical switch is constructed by two reduced-radius line-defect waveguides separated by the control waveguide. Furthermore, in our case the background material has the nonlinear Kerr property. Therefore, in the structure of this work, no frequency overlap occurs between the control waveguide mode and the directional coupler modes. It is shown that such a condition provides a very good isolation between the control and the probe signals at the output ports. In the control waveguide, nonlinear Kerr effect causes the required refractive index change by the presence of a high power control (pump) signal. Even and odd modes of the coupler are investigated by applying the distribution of the refractive index change in the nonlinear region of a super-cell so that a switching length of about 94 µm is obtained at the wavelength of 1.55 µm. Finally, all-optical switching of the 1.55 µm probe signal using a control signal at the wavelength of 1.3 µm, is simulated through the finite-difference time-domain method, where both signals are desirable in optical communication systems. A very high extinction ratio of 67 dB is achieved and the temporal characteristics of the switch are demonstrated. Advanced Electromagnetics 2015-07-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf application/msword https://www.aemjournal.org/index.php/AEM/article/view/307 10.7716/aem.v4i1.307 Advanced Electromagnetics; Vol. 4 No. 1 (2015); 63-67 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/307/pdf_54 https://www.aemjournal.org/index.php/AEM/article/view/307/261

oai:ojs.aempublisher.org:article/311 2026-04-04T20:53:00Z AEM:ART driver

The Maxwell equations as a Bäcklund transformation Papachristou, C. J. Maxwell equations Bäcklund transformations EM Waves Bäcklund transformations (BTs) are a useful tool for integrating nonlinear partial differential equations (PDEs). However, the significance of BTs in linear problems should not be ignored. In fact, an important linear system of PDEs in Physics, namely, the Maxwell equations of Electromagnetism, may be viewed as a BT relating the wave equations for the electric and the magnetic field, these equations representing integrability conditions for solution of the Maxwell system. We examine the BT property of this system in detail, both for the vacuum case and for the case of a linear conducting medium. Advanced Electromagnetics 2015-07-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/311 10.7716/aem.v4i1.311 Advanced Electromagnetics; Vol. 4 No. 1 (2015); 52-58 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/311/pdf_52

oai:ojs.aempublisher.org:article/321 2026-04-04T20:53:00Z AEM:ART driver

Application of the Mathieu’s equation for a design of a photonic crystal supporting surface electromagnetic waves Rostova, E. Dietler, G. Sekatskii, S. K. Plasmons Photonic crystal Surface waves Mathieu's equation Nowadays, unique characteristics of surface electromagnetic waves, particularly, surface plasmons supported by a specially designed photonic crystal find numerous applications. We propose to exploit an evident analogy between such a photonic crystal and a structure with a sine-modulated refractive index. The light propagation inside the latter is described by the famous Mathieu’s differential equation. This application of the Mathieu’s equation can be useful for a design of multilayer structures, and also for fundamental understanding of electromagnetic phenomena in inhomogeneous media. Advanced Electromagnetics 2015-11-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/321 10.7716/aem.v4i3.321 Advanced Electromagnetics; Vol. 4 No. 3 (2015); 17-24 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/321/pdf_62 Copyright (c) 2015 E. Rostova, G. Dietler, S. K. Sekatskii

oai:ojs.aempublisher.org:article/326 2026-04-04T20:53:00Z AEM:ART driver

Different Designs of Dual-Focus Perforated Transmitarray Antenna in Near/Far-Field Region Malhat, H. Abd El-Azem Zainud-Deen, S. Hassan, W. Transmitarry multi-focus near-field focus Designs of the single-focus and multi-focused transmitarray antennas for the near-field (NF) or/and far-field (FF) applications have been introduced. Perforated dielectric single sheet is used for transmitarray design for simple configuration. Single-focus transmitarray for the far-field and the near-field are obtained. The radiation characteristics of 13×13 unit-cells transmitarray in the near-field and the far-field region have been investigated. A single structure multi-focus transmitarray is designed using the chess-board arrangement of the unit-cells elements. Multi-focus transmitarray for FF/FF, FF/NF, and NF/NF have been designed and investigated. The phase distribution and the corresponding holes radii for the first quadrant of the multi-focus transmitarray are presented. The radiation characteristics of different array configuration have been investigated and analyzed using full-wave simulator CST Microwave Studio. Advanced Electromagnetics 2016-01-22 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/326 10.7716/aem.v4i3.326 Advanced Electromagnetics; Vol. 4 No. 3 (2015); 25-34 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/326/pdf

oai:ojs.aempublisher.org:article/327 2021-03-10T13:10:59Z AEM:ART driver

Single/Dual-Polarized Infrared Rectenna for Solar Energy Harvesting Zainud-Deen, S. H. Eltresy, N. A. Malhat, H. A. Awadalla, K. H. nanoantenna solar energy MIM diode dual-polarization Single and dual linearly-polarized receiving mode nanoantennas are designed for solar energy harvesting at 28.3 THz. The infrared rectennas are used to harvest the solar energy and converting it to electrical energy.  The proposed infrared rectenna is a thin dipole made of gold and printed on a silicon dioxide substrate. Different shapes of the dipole arms have been investigated for maximum collected energy. The two poles of the dipole have been determined in a rectangular, circular and rhombus shapes. The rectenna dipole is used to concentrate the electromagnetic energy into a small localized area at the inner tips of the gap between the dipole arms. The dimensions of the different dipole shapes are optimized for maximum near electric field intensity at a frequency of 28.3 THz. A Metal Insulator Metal (MIM) diode is incorporated with the nanoantenna dipole to rectify the received energy. The receiving efficiency of the solar energy collector with integrated MIM diode has been investigated. A dual-polarized, four arms, rhombus shaped nanoantenna dipole for solar energy harvesting has been designed and optimized for 28.3 THz applications. Advanced Electromagnetics 2016-05-04 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/327 10.7716/aem.v5i2.327 Advanced Electromagnetics; Vol. 5 No. 2 (2016); 1-9 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/327/pdf

oai:ojs.aempublisher.org:article/328 2021-03-10T13:11:07Z AEM:ART driver

A Metamaterial Backed Dipole Antenna for High Gain Directional Communications Sarin, V. P. Jayakrishnan, M. P. Aanandan, C. K. Pezholil, M. Kesavath, V. Antenna Metamaterials The enhanced radiation performance of a dipole antenna backed by the split ring resonator-continuous wire pair array working in the H┴ excitation scenario is presented in this paper.  The H┴ excitation scenario of the metamaterial is used to get zero reflection phase resulting in enhanced gain performance. The two layer meta-structure along with the dipole is fabricated on a low cost substrate of dielectric constant 4.4 and height 1mm. The reflection properties of the metamaterial structure and its effect on the radiation performance of the dipole antenna are presented in this paper. Advanced Electromagnetics 2016-03-10 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/328 10.7716/aem.v5i1.328 Advanced Electromagnetics; Vol. 5 No. 1 (2016); 9-14 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/328/pdf Copyright (c) 2016 Sarin vaiyaveettil Pushpakaran

oai:ojs.aempublisher.org:article/331 2021-03-10T13:11:08Z AEM:ART driver

Self inductance of a wire loop as a curve integral Dengler, R. self inductance calculation It is shown that the self inductance of a wire loop can be written as a curve integral akin to the Neumann formula for the mutual inductance of two wire loops. The only difference is that contributions where the two integration variables get too close to each other must be excluded from the curve integral and evaluated in detail. The contributions of these excluded segments depend on the distribution of the current in the cross section of the wire. They add to a simple constant proportional to the wire length. The error of the new expression is of first order in the wire radius if there are sharp corners and of second order in the wire radius for smooth wire loops. Advanced Electromagnetics 2016-01-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/331 10.7716/aem.v5i1.331 Advanced Electromagnetics; Vol. 5 No. 1 (2016); 1-8 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/331/pdf Copyright (c) 2016 Richard Dengler

oai:ojs.aempublisher.org:article/333 2021-03-10T13:11:05Z AEM:ART driver

Integrated Millimeter-Wave Antennas for On-Chip Communication Zainud-Deen, S. Abd Elhamied, S. Malhat, H. Abd El-Azem On-Chip Antenna Dual-Polarization Circular Polarization This paper introduces the design and analysis of circularly polarized (CP) and dual-polarized on-chip microstrip antennas for wireless communication at 60 GHz. The CP on-chip antenna consists of a circular aluminum patch with two overlapped circular slots fed by the transmission line. The radiation characteristics of the CP have been analyzed using the finite integration technique and finite element method based electromagnetic solvers. The CP antenna introduces left-hand circular polarization and employs as on-chip transmitter. A design of dual-polarized on-chip microstrip antenna at 60 GHz is investigated and is employed as on-chip receiver. The dual ports of the dual polarized antenna are designed with high isolation between them in order to be used as a two on-chip receivers. The radiation characteristics of the dual-port antenna have been calculated. The effect of the separation distance between the CP-antenna and the dual-polarized antenna on the same chip has been investigated. The performance parameters like the reflection coefficient, transmission coefficient, and the transmission gain of the two antennas at different separation distances have been introduced. Advanced Electromagnetics 2016-03-12 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/333 10.7716/aem.v5i1.333 Advanced Electromagnetics; Vol. 5 No. 1 (2016); 22-29 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/333/pdf

oai:ojs.aempublisher.org:article/342 2021-03-10T13:11:06Z AEM:ART driver

Design of Voltage control Oscillator using Nonlinear Composite Right/Left-Handed Transmission Line El-Khozondar, H. J. Abu-Marasa, M. El-Khozondar, R. J. Elbahri, M. Zouhdi, S. VCO metamaterials In the present work, we propose a voltage control oscillator (VCO) at high frequency consists of nonlinear composite right/left-handed transmission line (CRLH-TL) loaded with Resonant Tunneling Diode (RTD). We designed three prototype device examples. The first one consists of one cell with short circuit at the beginning of the cell between ground and patch, and 50 Ω load resistance were added at the end of the cell between ground and patch. The second one is similar to the first prototype but with open circuit at the beginning of the cell instated of short circuit. The third prototype consists of one cell with two 50 Ω load resistances added between ground and patch at the beginning and at the end of the cell. The proposed VCO models are capable of generating oscillations at frequencies between 4.87- 14.9 GHz. In our simulations, we used OrCAD and ADS software to analyze the proposed circuit. Advanced Electromagnetics 2016-03-10 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/342 10.7716/aem.v5i1.342 Advanced Electromagnetics; Vol. 5 No. 1 (2016); 15-21 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/342/pdf Copyright (c) 2016 H. Jarallah El-Khozondar

oai:ojs.aempublisher.org:article/343 2021-03-10T13:10:57Z AEM:ART driver

A Novel Wideband Magneto-Electric Dipole Antenna with Improved Feeding Structure Marwah, N. Pandey, G. P. T., V. Marwah, S. S. differential feed radiation pattern magneto-electric dipole A novel feeding structure in magneto-electric dipole antenna is proposed and analyzed, which is simpler and better in performance than previous designs, involving differential feeding.  Due to this improved feeding structure, the antenna has achieved an impedance bandwidth of 133.3% ( 0.5 GHz – 2.5 GHz, resulting into an ultra-wide band antenna. The maximum broadside gain 7.5dBi with unidirectional radiation pattern has also been reported for the entire the range of operation. Symmetry in E-plane and H-plane radiation patterns has been observed due to the symmetry in structure and excitation of antenna. The antenna has also been able to achieve cross polarization levels. Advanced Electromagnetics 2016-08-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/343 10.7716/aem.v5i2.343 Advanced Electromagnetics; Vol. 5 No. 2 (2016); 10-16 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/343/pdf Copyright (c) 2016 Neetu Marwah, Ganga Prasad Pandey, Vivekanand Tiwari, Sarabjot Singh Marwah

oai:ojs.aempublisher.org:article/348 2021-03-10T13:11:03Z AEM:ART driver

Extremely Low Frequency Electromagnetic Field (ELF-EMF) and childhood leukemia near transmission lines: a review Kokate, P. A. Mishra, A. K. Lokhande, S. K. Bodhe, G. L. Extremely low frequency EMF childhood leukemia acute lymphoblastic leukemia This article presents a systematic review of most cited studies from developed countries those shed light on the potential relation between childhood leukemia and extremely low frequency electromagnetic field (ELF-EMF). All the findings of articles critically segregated as per some neglected parameters like number of samples, exposure duration, frequency range, distance from the radiation sources, and location during measurement of magnetic field density near power lines. Literature of major 50 studies are divided according to pooled analysis / meta-analysis, residential zone assessment and case-control studies. Advanced Electromagnetics 2016-04-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/348 10.7716/aem.v5i1.348 Advanced Electromagnetics; Vol. 5 No. 1 (2016); 30-40 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/348/pdf Copyright (c) 2016 Piyush Ashokrao Kokate, Amit kumar Mishra, Satish K Lokhande, Ganashyam Lakshman Bodhe

oai:ojs.aempublisher.org:article/353 2021-03-10T13:10:56Z AEM:ART driver

Investigation on Microstrip Filters with CSRR Defected Ground Structure Kumar, A. Patel, R. Kartikeyan, M. V. microstrip filters CSRR This paper consists the design studies of complementary split ring resonator (CSRR) defected ground structure (DGS) microstrip filter with low insertion loss in the passband and high rejection in stopband with a comparison of various CSRR-DGS structure has been proposed. Various parameters of microstrip filters have been studied with CSRR-DGS such as roll off rate, bandwidth, effective inductance and capacitance. On the basis of these studies, microstrip low-pass, bandpass and dual-band bandstop filters have been designed and realized with enhanced properties of filters. Advanced Electromagnetics 2016-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/353 10.7716/aem.v5i2.353 Advanced Electromagnetics; Vol. 5 No. 2 (2016); 28-33 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/353/pdf Copyright (c) 2016 Arjun Kumar

oai:ojs.aempublisher.org:article/355 2021-03-10T13:11:02Z AEM:ART driver

Approximate Analytical Technique to Design Reflectarray Antenna Yamani, H. M. Attiya, A. M. Abdelmageed, A. K. Reflectarray Antenna This paper presents an analysis and design for a reflectarray antenna composed of an array of rectangular patches printed on a grounded dielectric slab. A simple analytical technique based on equivalent surface impedance is used to determine the reflection of the elements in reflectarray antenna. This equivalent surface impedance is obtained analytically in a closed form. The effect of the angle of incidence on each element in the reflectarray is included in calculations. To author’s knowledge, this property has not been included in previous analysis techniques of reflectarray antenna. Advanced Electromagnetics 2016-04-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/355 10.7716/aem.v5i1.355 Advanced Electromagnetics; Vol. 5 No. 1 (2016); 41-45 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/355/pdf

oai:ojs.aempublisher.org:article/362 2021-03-10T13:11:00Z AEM:ART driver

Strain Effect Study on Mode Field Diameter and Effective Area of WII Type Single Mode Optical Fiber Makouei, S. Makouei, F. multilayer optical fiber strain quality factor mode field diameter effective area In this article, the effect of strain on mode field diameter (MFD) and effective area (Aeff) in a modern multilayer WII type single mode optical fiber is investigated. The modal analysis of the fiber structure is based on linear polarized (LP) approximation method. The simulation results depict that both mode field diameter and effective area grow as a result of increment in tensile strain. The overall effect is observed in a slight rise in quality factor (Qf) of the fiber. Likewise, enlargement in amplitude of compressive strain leads to decrement in MFD and Aeff. However, among the optical and geometrical parameters of the fiber structure, Δ has the most considerable impact on both MFD and Aeff variation whilst R1 shows the least effect. In other words, any shift in the value allocated to Δ results in substantial change in the MFD and Aeff alteration due to strain. To eliminate this effect, the higher amounts for Δ are preferable which is related to the layering structure of the WII type optical fiber. Advanced Electromagnetics 2016-05-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/362 10.7716/aem.v5i1.362 Advanced Electromagnetics; Vol. 5 No. 1 (2016); 53-61 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/362/pdf Copyright (c) 2016 somayeh makouei, Fatemeh Makouei

oai:ojs.aempublisher.org:article/365 2021-03-10T13:10:48Z AEM:ART driver

Polygon Shaped 3G Mobile Band Antennas for High Tech Military Uniforms Krishnan, M. Kannan, G. Wearable antenna Polygon shape patch antenna Smart textiles Smart Textiles integrated with communicating components have been used in military for many applications. Wearable antenna can be attached or embedded into smart textiles which could be used for communication between combat soldiers in the battlefield. This paper presents the design of three different polygon shaped patch antenna operating on 3G Mobile Band frequency 2100 MHz embedded on three different dielectric constant materials for Military applications. The proposed polygon shaped patch antenna introduces horizontal slit in its patch to improve the antenna performance. The effect of slit length and slit width on the antenna performance is analyzed.   Advanced Electromagnetics 2016-11-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/365 10.7716/aem.v5i3.365 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 7-13 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/365/pdf Copyright (c) 2016 MUTHU KRISHNAN

oai:ojs.aempublisher.org:article/368 2021-03-10T13:10:47Z AEM:ART driver

Frequency Behavior of Conformal Wire Structures Leone, G. Mattiello, F. Ruvio, G. Pierri, R. Frequency selective surfaces Conical geometry Wire scattering Three-dimensional models are built to examine the frequency behavior of wire structures conforming onto nonplanar surfaces. The effects of altered periodicity on frequency selectiveness of the structures are considered. An analogy is drawn with the antenna impedance behavior of a single active wire surrounded by a number of passive similar ones. Numerical simulations are performed for different wire geometries over a conical surface. Advanced Electromagnetics 2016-11-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/368 10.7716/aem.v5i3.368 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 14-19 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/368/pdf_1 Copyright (c) 2016 Giovanni Leone, Francesco Mattiello, Giuseppe Ruvio, Rocco Pierri

oai:ojs.aempublisher.org:article/376 2021-03-10T13:10:56Z AEM:ART driver

Light Spins of Cylindrical Electromagnetic Waves and their Jumps across Material Interfaces in the Presence of Energy Exchange Mok, J. Lee, H.-I. Kuzmin, D. A. Bychkov, I. V. Light Spin Cylindrical Waves Radiation Absorption Refractive Index Contrast Azimuthal Mode Number We investigate light spins for cylindrical electromagnetic waves on resonance. To this goal, we consider both a dielectric cylinder of infinite length immersed in vacuum and a cylindrical hole punched through a dense dielectric medium. In order for waves of constant frequencies to be established through lossless media, energy absorption is allowed in the surrounding medium to compensate for radiation loss. The dispersion relation is then numerically solved for an asymmetry parameter implying a balance in energy exchange. Numerical studies are performed by varying parameters of refractive index contrast, azimuthal mode index, and size parameter of a cylindrical object. The resulting data is presented mostly in terms of a specific spin, defined as light spin per energy density. This specific spin is found to be bounded in its magnitude, with its maximum associated with either optical vortices or large rotations. Depending on parametric combinations, the specific spin could not only undergo finite jumps across the material interface but also exhibit limit behaviors. Advanced Electromagnetics 2016-08-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/376 10.7716/aem.v5i2.376 Advanced Electromagnetics; Vol. 5 No. 2 (2016); 17-27 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/376/pdf Copyright (c) 2016 Hyoung-In Lee, Jinsik Mok, Dmitry A Kuzmin, Igor V Bychkov

oai:ojs.aempublisher.org:article/380 2021-03-10T13:10:46Z AEM:ART driver

Reliability Study of Mechatronic Power Components Using Spectral Photon Emission Microscopy Moultif, N. Joubert, E. Latry, O. Reliability Photon emission Spectral photon emission SiC MOSFET AlGaN/GaN HEMT In this paper, we present one of the most important failure analysis tools that permits the localizing and the identification of the failure mechanisms. It is a new spectral photon emission system, enabling to localize the failure, and quickly get the photon emission spectra that characterize the failure with high resolution. A diffraction grating is used as a spectrometer in the system. Application results on mechatronic power devices such as HEMT AlGaN/GAN and SiC MOSFETs are reported. Advanced Electromagnetics 2016-11-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/380 10.7716/aem.v5i3.380 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 20-24 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/380/pdf Copyright (c) 2016 Niemat Moultif, Eric Joubert, Olivier Latry

oai:ojs.aempublisher.org:article/388 2021-03-10T13:10:54Z AEM:ART driver

Attenuation in Superconducting Circular Waveguides Yeap, K. H. Ong, S. S. Nisar, H. Lai, K. C. Ng, C. A. Superconductor circular waveguides attenuation Cooper pairs quasiparticles intragap states energy gap complex conductivity We present an analysis on wave propagation in superconducting circular waveguides. In order to account for the presence of quasiparticles in the intragap states of a superconductor, we employ the characteristic equation derived from the extended Mattis-Bardeen theory to compute the values of the complex conductivity. To calculate the attenuation in a circular waveguide, the tangential fields at the boundary of the wall are first matched with the electrical properties (which includes the complex conductivity) of the wall material. The matching of fields with the electrical properties results in a set of transcendental equations which is able to accurately describe the propagation constant of the fields. Our results show that although the attenuation in the superconducting waveguide above cutoff (but below the gap frequency) is finite, it is considerably lower than that in a normal waveguide. Above the gap frequency, however, the attenuation in the superconducting waveguide increases sharply. The attenuation eventually surpasses that in a normal waveguide. As frequency increases above the gap frequency, Cooper pairs break into quasiparticles. Hence, we attribute the sharp rise in attenuation to the increase in random collision of the quasiparticles with the lattice structure. Advanced Electromagnetics 2016-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/388 10.7716/aem.v5i2.388 Advanced Electromagnetics; Vol. 5 No. 2 (2016); 34-38 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/388/pdf Copyright (c) 2016 Kim Ho Yeap

oai:ojs.aempublisher.org:article/390 2021-03-10T13:10:49Z AEM:ART driver

A Graphical User Interface for Scattering Analysis of Electromagnetic Waves Incident on Planar Layered Media Mirala, A. Abdolali, A. MATLAB Graphical User Interface layered media This paper introduces a MATLAB-based Graphical User Interface (GUI) which could help electromagnetics engineers and researchers who are interested in designing layered media for various applications. The paper begins with presenting the analysis method the program employs, continues by encountering specific considerations and techniques of implementation, and ends with providing different numerical examples. These examples show good efficiency of the program for analysis of diverse problems. Advanced Electromagnetics 2016-09-28 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/390 10.7716/aem.v5i3.390 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 1-6 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/390/pdf Copyright (c) 2016 Ali Mirala, Ali Abdolali

oai:ojs.aempublisher.org:article/391 2021-03-10T13:10:50Z AEM:ART driver

Losses Approximation for Soft Magnetic Composites Based on a Homogenized Equivalent Conductivity Ren, X. Corcolle, R. Daniel, L. Homogenization Joule losses Composites Soft magnetic composites (SMC) are a promising alternative to laminated steel in many Electrical Engineering applications. This is largely owing to their low level of eddy current losses. The electromagnetic behavior of SMC in electromagnetic devices cannot be easily predicted using standard numerical techniques such as the finite element method, mostly due to the computational cost required to model the material microstructure. Another difficulty lies in the high property contrast between the matrix and the inclusions. In this paper we propose a homogenization strategy to define the equivalent electromagnetic properties of SMC. For components made of SMC, the equivalent conductivity and permeability can be determined. These equivalent properties can be used to calculate eddy current losses or introduced into structural analysis tools to design electromagnetic devices. Advanced Electromagnetics 2016-09-28 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/391 10.7716/aem.v5i2.391 Advanced Electromagnetics; Vol. 5 No. 2 (2016); 59-64 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/391/pdf Copyright (c) 2016 Xiaotao Ren, Romain Corcolle, Laurent Daniel

oai:ojs.aempublisher.org:article/393 2021-03-10T13:10:45Z AEM:ART driver

Emergence of Classicality from Initial Quantum World for Dissipative Optical Waves Choi, J. R. optical waves For light waves propagating in dissipative media, the emergence of classical characteristics from the initial quantum world is investigated. Two classicality measures of the system, which are the measure of the degree of (relative) classical correlation and that of the degree of quantum decoherence are analyzed. Advanced Electromagnetics 2016-11-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/393 10.7716/aem.v5i3.393 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 25-31 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/393/pdf Copyright (c) 2016 Jeong Ryeol Choi

oai:ojs.aempublisher.org:article/395 2021-03-10T13:10:53Z AEM:ART driver

Inverse Scattering in a Multipath Environment Cuccaro, A. Solimene, R. Inverse Electromagnetic Scattering Inverse Problems Back-projection Imaging In this contribution an inverse scattering problem is ad- dressed in a multipath environment. In particular, multipath is created by known ”extra” point-like scatterers (passive elements) expressely deployed between the scene under in- vestigation and the source/measurement domains. Through a back-projection imaging scheme, the role of the passive elements on the achievable performance is shown and com- pared to the free-space case.  Advanced Electromagnetics 2016-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/395 10.7716/aem.v5i2.395 Advanced Electromagnetics; Vol. 5 No. 2 (2016); 39-45 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/395/pdf Copyright (c) 2016 Antonio Cuccaro, Raffaele Solimene

oai:ojs.aempublisher.org:article/396 2021-03-10T13:10:52Z AEM:ART driver

Metric entropy in linear inverse scattering Maisto, M. A. Solimene, R. Pierri, R. Inverse scattering Information theory The role of multiple views and/or multiple frequencies on the achievable performance in linear inverse scattering problems is addressed. To this end, the impact of views and frequencies on the Kolmogorov entropy measure is studied. This way the metric information that can be conveyed back from data to the unknown can be estimated. For the sake of simplicity, the study deals with strip scatterers and the cases of discrete angles of incidence and/or frequencies.  Advanced Electromagnetics 2016-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/396 10.7716/aem.v5i2.396 Advanced Electromagnetics; Vol. 5 No. 2 (2016); 46-52 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/396/pdf Copyright (c) 2016 Maria Antonia Maisto, Raffaele Solimene, Rocco Pierri

oai:ojs.aempublisher.org:article/397 2021-03-10T13:10:51Z AEM:ART driver

Comparison between different decorrelation techniques in vital sign detection Dell'Aversano, A. Natale, A. Solimene, R. Spatial Smoothing Toeplitz matrix MUSIC Vital Sign Detection The problem of detecting the breath activities of a human subject is addressed. A CW signal is used to probe the scene and the MUSIC algorithm is exploited to detect frequency doppler modulation introduced by chest movements. For this particular measurement configuration, the correlation matrix results rank deficient. In order to restore the rank, two decorrelation techniques are compared by exploiting numerical data. Advanced Electromagnetics 2016-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/397 10.7716/aem.v5i2.397 Advanced Electromagnetics; Vol. 5 No. 2 (2016); 53-58 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/397/pdf Copyright (c) 2016 Angela Dell'Aversano, Andrea Natale, Raffaele Solimene

oai:ojs.aempublisher.org:article/400 2021-03-10T13:10:40Z AEM:ART driver

Design and Analysis of Novel Fractal Linear and Planar Array Antennas for Satellite Applications Sankar, V. A. Jayasree, P. V. Y. Fractal Array Antennas Satellite This article proposed a new geometric design methodology for the systematic expansion of fractal linear and planar array antennas. Using this proposed geometric design methodology any deterministic polygon shape can be constructed. In this article, two element fractal linear and triangular array antennas are examined using proposed methodology up to four iterations of two expansion factors. Due to the repetitive nature of the proposed geometric design methodology, both linear and planar fractal arrays shows multi-beam behavior with excellent array factor properties. The behavior of the proposed arrays shows better performance than linear and planar fractal array antennas generated by concentric circular ring sub array geometric generator. Triangular planar fractal array of expansion factor two at fourth iteration achieved a single valued beam width of 3.80 with -31.6 side lobe level. The suggested fractal arrays are analyzed and simulated by MATLAB-13 programming. Advanced Electromagnetics 2016-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/400 10.7716/aem.v5i3.400 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 56-62 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/400/pdf_1 Copyright (c) 2016 V A Sankar, P.V.Y Jayasree

oai:ojs.aempublisher.org:article/401 2021-03-10T13:10:32Z AEM:ART driver

Two-Dimensional Scattering by a Homogeneous Gyrotropic-Type Elliptic Cylinder Hamid, A. K. Cooray, F. scattering Mathieu function Gyrotropic material The separation of variables procedure has been employed for solving the problem of scattering from an infinite homogeneous gyrotropic-type (G-type) elliptic cylinder, when a uniform plane electromagnetic wave perpendicular to its axis, illuminates it. The formulation of the problem involves expanding each electric and magnetic field using appropriate elliptic vector wave functions and expansion coefficients. Imposing suitable boundary conditions at the surface of the elliptic cylinder yields the unknown expansion coefficients related to the scattered and the transmitted fields. To demonstrate how the various G-type materials and the size of the cylinder affects scattering from it, plots of scattering cross sections are given for cylinders having different permittivity/permeability tensors and sizes. Advanced Electromagnetics 2016-12-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/401 10.7716/aem.v5i3.401 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 106-112 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/401/pdf Copyright (c) 2016 abdulkadir hamid

oai:ojs.aempublisher.org:article/402 2021-03-10T13:10:44Z AEM:ART driver

Analysis of Reflector Antennas in Radio Telescopes Yeap, K. H. Loh, M. C. Tham, C. Y. Yiam, C. Y. Yeong, K. C. Lai, K. C. reflector antennas Offset Cassegrain On-axis Cassegrain Off-axis Cassegrain Offset Gregorian On-axis Gregorian off-axis Gregorian physical optics radio telescopes sub-reflector spillover radiation characteristics We present an analysis on the performance of the Cassegrain and Gregorian on-axis, off-axis and offset antennas. In our study, we have adopted the design parameters for the Cassegrain configuration used in the Atacama Large Millimeter Array (ALMA) project. Modifications on the original parameters are made so as to meet the design requirement for the off-axis and offset configurations. To reduce spillover loss in the offset antennas, we have adjusted the angle between the axis of the primary reflector and that of the sub-reflector, so that the feed horn is placed right next to the edge of the primary reflector. This is to allow the offset antennas to receive the highest power at the feed horn. The results obtained from the physical optics simulation show that the radiation characteristics of both Cassegrain and Gregorian antennas are similar. The offset designs exhibit the best performance, followed by the on-axis, and, finally, the off-axis designs. Our analysis also shows that the performance of both offset Cassegrain and Gregorian antennas are comparable to each other. Advanced Electromagnetics 2016-11-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/402 10.7716/aem.v5i3.402 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 32-38 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/402/pdf Copyright (c) 2016 Kim Ho Yeap

oai:ojs.aempublisher.org:article/403 2021-03-10T13:10:43Z AEM:ART driver

Frequency and Magnetic Field Dependence of the Skin Depth in Co-rich Soft Magnetic Microwires Zhukov, A. Talaat, A. Ipatov, M. Granovsky, A. Zhukova, V. magnetoimpedance metamaterials We studied giant magnetoimpedance (GMI) effect in magnetically soft amorphous Co-rich microwires in the extended frequency range. From obtained experimentally dependences of GMI ratio on magnetic field and different frequencies we estimated the penetration depth and its dependence on applied magnetic field and frequency Advanced Electromagnetics 2016-11-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/403 10.7716/aem.v5i3.403 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 39-41 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/403/pdf Copyright (c) 2016 Arcady Zhukov, Ahmed Talaat, Mihail Ipatov, Alexandr Granovsky, Valentina Zhukova

oai:ojs.aempublisher.org:article/404 2021-03-10T13:10:39Z AEM:ART driver

Engineering of giant magnetoimpedance effect of amorphous and nanocrystalline microwires Zhukova, V. Talaat, A. Ipatov, M. Granovsky, A. Zhukov, A. magnetoimpedance magnetic materials We present our studies of the factors affecting soft magnetic properties and giant magnetoimpedance effect in thin amorphous and nanocrystalline microwires. We showed that the magnetoelastic anisotropy is one of the most important parameters that determine magnetic softness and GMI effect of glass-coated microwires  and annealing can be very effective for manipulation the magnetic properties of amorphous ferromagnetic glass-coated microwires. Considerable magnetic softening and increasing of the GMI effect is observed in Fe-rich nanocrystalline FINEMET-type glass-coated microwires after the nanocrystallization. Advanced Electromagnetics 2016-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/404 10.7716/aem.v5i3.404 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 63-68 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/404/pdf Copyright (c) 2016 Arcady Zhukov

oai:ojs.aempublisher.org:article/407 2021-03-10T13:10:26Z AEM:REV driver

Review on Computational Electromagnetics Sumithra, P. Thiripurasundari, D. Computational electromagnetics Computational electromagnetics (CEM) is applied to model the interaction of electromagnetic fields with the objects like antenna, waveguides, aircraft and their environment using Maxwell equations.  In this paper the strength and weakness of various computational electromagnetic techniques are discussed. Performance of various techniques in terms accuracy, memory and computational time for application specific tasks such as modeling RCS (Radar cross section), space applications, thin wires, antenna arrays are presented in this paper. Advanced Electromagnetics 2017-03-10 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Review Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/407 10.7716/aem.v6i1.407 Advanced Electromagnetics; Vol. 6 No. 1 (2017); 42-55 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/407/pdf Copyright (c) 2017 Sumithra Panneer Selvam

oai:ojs.aempublisher.org:article/419 2021-03-10T13:10:38Z AEM:ART driver

Broadband TE10 to TE20 Mode Transformer for X Band Passi, D. Leggieri, A. Citroni, Rocco Di Paolo, F. Finline Spatial power combiner mode transformer This paper deals with a broadband TE10 to TE20 mode transformer in a WR90 rectangular waveguide with more than 35 dB suppression of the fundamental mode and only 0.4 dB of maximum transformation loss. Two fin lines are employed with appropriate configuration in order to obtain a broadband mode transformation. Advanced Electromagnetics 2016-12-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/419 10.7716/aem.v5i3.419 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 69-72 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/419/pdf Copyright (c) 2016 Davide Passi, Alberto Leggieri, Rocco Citroni, Franco Di Paolo

oai:ojs.aempublisher.org:article/420 2021-03-10T13:10:25Z AEM:ART driver

Applying the Retarded Solutions of Electromagnetic Fields to Transmission Line RLGC Modeling Ye, P. Gore, B. Huray, P. Transmission Line RLGC Time Retarded Field Jefimenko The RLGC model, and its variations, is one of the most common techniques to simulate Transmission Lines. The RLGC model uses circuit network elements consisting of Resistance R, Inductance L, Conductance G and Capacitance C (per unit length) to represent a small segment of the Transmission Line, and then cascades multiple segments to simulate the Transmission Line of arbitrary length. Typically the parameters in RLGC model are extracted from the propagation constant and characteristic impedance of the transmission line, which are found using numerical simulation methods. These resulting RLGC parameters for multi-GHz signaling are usually frequency-dependent. This paper introduces an analytical approach to extract RLGC parameters to simulate transmission line, which results in a different model, the RLGC(p) model. Advanced Electromagnetics 2017-03-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/420 10.7716/aem.v6i1.420 Advanced Electromagnetics; Vol. 6 No. 1 (2017); 56-62 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/420/pdf Copyright (c) 2017 Peng Ye, Brandon Gore, Paul Huray

oai:ojs.aempublisher.org:article/422 2021-03-10T13:09:56Z AEM:ART driver

Energy Tunneling Behavior in Geometrically Separated Wave Guides Omar, M. Ramzan, R. Saddiqui, O. F. Energy Tunneling In this paper, characteristics of energy tunneling channel between the waveguides geometrically separated by a coaxial cable are studied.  The novel aspect of design is use of coaxial channel to connect the waveguides while maintaining the energy tunneling phenomena. As anticipated the tunneling frequency depends upon the length of wire inside the waveguide and the length of the coaxial cable. The tunneling frequency also depends upon the dielectric constant of the material inside the waveguide and coaxial cable.  At tunneling frequency the field strength (E and H) in the channel is extremely high, making the channel extremely sensitive to small change in permittivity of dielectric occupying the channel.  The advantage of the proposed design is, its ability to tune to desired tunneling frequency just by changing the length of the coaxial cable without the need to redesign the waveguide height to accommodate the long tunneling wires. This structure can be used as dielectric sensor both for solid or liquid dielectrics just by placing the sample in coaxial cable cavity, contrary to previously report work where the sample has to be placed inside the waveguide. Advanced Electromagnetics 2017-10-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/422 10.7716/aem.v6i3.422 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 84-87 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/422/310 Copyright (c) 2017 muhammad omar, Rashad Ramzan, Omar Farooq Saddiqui

oai:ojs.aempublisher.org:article/423 2021-03-10T13:10:31Z AEM:ART driver

Trapping of light with angular orbital momentum above the light cone Bulgakov, E. Sadreev, A. Scattering Trapping of light Radiation We consider bound states in the radiation continuum (BSC) above the light cone in an one-dimensional periodic array of dielectric spheres in air. The BSCs are classified by orbital angular momentum m, Bloch wave vector β directed along the array, and polarization. The most simple symmetry protected BSCs have m = 0, β = 0 and occur in a wide range of the radius of spheres and dielectric constant. More sophisticated BSCs with m ̸= 0, β = 0 exist only for a selected radius of the spheres at a fixed dielectric constant. We also show the existence of robust Bloch BSCs with β ̸=0, m = 0. The BSCs with m = 0 can be easily detected by the collapse of Fano resonance in scattering of a plane wave. In response to a plane wave with circular polarization the BSCs with m ̸= 0 give rise to Poynting vector spiralling around the array. Advanced Electromagnetics 2017-01-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/423 10.7716/aem.v6i1.423 Advanced Electromagnetics; Vol. 6 No. 1 (2017); 1-10 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/423/pdf Copyright (c) 2017 Almas Sadreev

oai:ojs.aempublisher.org:article/424 2021-03-10T13:10:29Z AEM:ART driver

Performance Improvement of Ultra Wideband Multiple Access Modulation System using a new Optimal Pulse Shape Goyal, V. Dhaliwal, B. S. UWB PPM PAM PAM-TH RAKE Multipath Ultra-wideband (UWB) uses very low energy levels to transfer data at very high data rate and bandwidth. An optimal and correct choice of transmission pulse shape is an important criterion in this technology. In this paper, we will present an approach for the generation of an optimal pulse shape with the optimal generation of pulse shape values that can provide effective results when transmitted using multiple access modulation technique over a multipath channel and received by a RAKE type receiver. The bit error analysis of constructed model is also given using Ideal Rake, selective RAKE, and partial RAKE receiver configurations. Advanced Electromagnetics 2017-02-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/424 10.7716/aem.v6i1.424 Advanced Electromagnetics; Vol. 6 No. 1 (2017); 20-28 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/424/pdf Copyright (c) 2017 Vikas Goyal

oai:ojs.aempublisher.org:article/425 2021-03-10T13:10:42Z AEM:ART driver

Patch Antenna based on a Photovoltaic Cell with a Dual resonance Frequency Baccouch, C. Bouchouicha, D. Sakli, H. Aguili, T. Antenna Photovoltaic The present work was to use photovoltaic solar cells in patch antenna structures. The radiating patch element of a patch antenna was replaced by a solar cell. Direct Current (DC) generation remained the original feature of the solar cell, but additionally   it was now able to receive and transmit electromagnetic waves. Here, we used a new patch antenna structure based on a photovoltaic solar cell. It was then used to collect photo-generated current as well as Radio Frequency (RF) transmission. A mathematical model which would serve the minimization of power losses of the cell and therefore the improvement in the conversion efficiency was studied. A simulation allowed analysing the performance of the antenna, with a silicon material, and testing its parameters such as the reflection coefficient (S11), gain, directivity and radiated power. The performance analysis of the solar cell patch antenna was conducted using Advanced Design System (ADS) software. Simulation results for this antenna showed a dual resonance frequency of 5.77 GHz and of 6.18 GHz with an effective return loss of -38.22dB and a gain of 1.59dBi. Advanced Electromagnetics 2016-11-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/425 10.7716/aem.v5i3.425 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 42-49 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/425/pdf Copyright (c) 2016 Chokri Baccouch

oai:ojs.aempublisher.org:article/426 2021-03-10T13:10:34Z AEM:ART driver

Modeling and analysis of loaded multilayered magnetoelectroelastic structures composite materials: Applications Ajdour, M. Bakkali, A. Azrar, L. El Omri, A. magnetoelectroelastic structures composites homogenization This paper presents the detailed analysis of fiber- reinforced magnetoelectroelastic composite plates. The work is divided into two major sections. The first one deals with the homogenization of the properties of each layer based on the Mori-Tanaka mean field approach where all the needed effective coefficients of each layer are determined. Then, in order to perform analysis of the considered, the Stroh formalism is used to provide solutions for multifunctional multilayered magnetoelectroelastic composites, to predict exactly the mechanical and electrical behaviors near or across the interface of material layers. Advanced Electromagnetics 2016-12-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/426 10.7716/aem.v5i3.426 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 91-97 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/426/pdf Copyright (c) 2016 Mounia Ajdour

oai:ojs.aempublisher.org:article/428 2021-03-10T13:09:55Z AEM:ART driver

Microwave Interferometry Based On Open-ended Coaxial Technique for High Sensitivity Liquid Sensing Bakli, H. Haddadi, K. permittivity electromagntec interaction elctromagnetic characterization This paper describes a modified open-ended coaxial technique for microwave dielectric characterization in liquid media. A calibration model is developed to relate the measured transmission coefficient to the local properties of the sample under test. As a demonstration, the permittivity of different sodium chloride solutions is experimentally determined. Accuracies of 0.17% and 0.19% are obtained respectively for the real and imaginary parts of dielectric permittivity at 5.9 GHz. Advanced Electromagnetics 2017-10-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/428 10.7716/aem.v6i3.428 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 88-93 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/428/311 Copyright (c) 2017 HIND BAKLI, KAMEL HADDADI

oai:ojs.aempublisher.org:article/429 2021-03-10T13:10:17Z AEM:ART driver

Microwave microscopy applied to EMC problem: Visualisation of electromagnetic field in the vicinity of electronic circuit and effect of nanomaterial coating Rossignol, J. Stuerga, D. Bailly, G. Harrabi, A. Girard, S. Lalléchère, S. Materials microwave microscopy propagation near-field scanning EMC This proposal is devoted to a collaborative approach dealing with microwave microscopy experiments. The application is dedicated to an electromagnetic field cartography above circuits and the influence of nanometric material layer deposition on the circuits. The first application is associated to a microstrip ring resonator. The results match with the simulated fields. The second application is focused on the effects of a dielectric layer deposited on the circuit and its impact in terms of electromagnetic propagation. Advanced Electromagnetics 2017-05-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/429 10.7716/aem.v6i2.429 Advanced Electromagnetics; Vol. 6 No. 2 (2017); 33-39 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/429/pdf Copyright (c) 2017 Jérôme Rossignol, Sébastien Girard, Sébastien Lalléchère

oai:ojs.aempublisher.org:article/430 2021-03-10T13:10:30Z AEM:ART driver

Electromagnetic and material contributions to stress, energy, and momentum in metamaterials Kemp, B. A. Sheppard, C. J. optical momentum SEM tensors Lorentz force Abraham-Minkowski We demonstrate modeling of the field-kinetic and material response subsystem for various media and extend the models to dispersive negative index metamaterials.  It is shown that neither the Minkowski or Abraham models are universally correct, as demonstrated to describe metamaterials under both the field-kinetic and wave SEM models for various applications such as negative refraction, perfect lensing, and invisibility cloaking. Advanced Electromagnetics 2017-01-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/430 10.7716/aem.v6i1.430 Advanced Electromagnetics; Vol. 6 No. 1 (2017); 11-19 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/430/pdf Copyright (c) 2017 Brandon A. Kemp, Cheyenne J. Sheppard

oai:ojs.aempublisher.org:article/431 2021-03-10T13:10:24Z AEM:ART driver

Strain and Curvature Stability Enhanced SMF Introduction Makouei, S. optical fiber bending loss axial strain genetic algorithm In this paper, the strain insensitive single mode optical fiber with low nonlinear effects and ultra low bending loss (BL), appropriate for small curvature radius installation, is presented. The suggested design method is based on the reverse engineering which evaluates the refractive index profile considering proper mode field diameter (MFD) value. Then, so as to attain the desired bending loss and strain response for the optical fiber, the optimization tool of the evolutionary genetic algorithm (GA) is employed to determine the optical and geometrical parameters of the structure. In the first designed fiber, the calculations for BL, MFD, effective area (Aeff), and effective refractive index (neff) sensitivity to strain in the well-known wavelength of 1.55 µm are 0.0018 dB per each turn of 5 mm curvature radius, 8.53 µm, 58 µm2, and 4.5 × 10-8 µɛ-1, respectively. Furthermore, the effect of placing raised outer cladding in the fiber structure is investigated which exhibits the MFD of 8.63 µm, 0.0093 dB BL for single turn of 5 mm radius, and 87 µm2 Aeff at 1.55 µm. In this case the strain sensitivity of 6.7 × 10-8 µɛ-1 is calculated for the neff. The mentioned effective area is magnificently large in the domain of bend insensitive fibers. In the meantime, the designed structures are insensitive to strain which is a crucial feature in applications with small curvature radius. Advanced Electromagnetics 2017-03-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/431 10.7716/aem.v6i1.431 Advanced Electromagnetics; Vol. 6 No. 1 (2017); 63-69 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/431/pdf Copyright (c) 2017 somayeh makouei

oai:ojs.aempublisher.org:article/432 2021-03-10T13:10:37Z AEM:ART driver

A Hybrid Technique Using Combinatorial Cyclic Difference Sets and Binomial Amplitude Tapering for Linear Sparse Array Antenna Design Sandi, E. Zulkifli, F. Y. Rahardjo, E. T. Sparse array configuration Combinatorial CDS Amplitude Tapering Binomial Array Hybrid Technique SLL Reducing system complexity and cost in synthesizing a sparse array antenna design is a challenging task for practical communication systems, such as radar systems and space communication. In this paper, a hybrid technique to synthesize a linear sparse array antenna design is described. This technique is developed using two methods. The first method is a combinatorial approach that applies cyclic difference sets (CDS) integers to significantly reduce the number of antenna elements. The approach and procedure used to apply the new CDS method to configure a linear sparse array, with significant reduction of the spatial antenna dimension, is described. The second method, applied to the array result of the first method, is amplitude tapering using a binomial array approach to reduce the sidelobes level (SLL). The simulation and measurement results of the sample sparse array design showed that the SLL was reduced in comparison to the sparse array design using only the combinatorial CDS method. Advanced Electromagnetics 2016-12-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/432 10.7716/aem.v5i3.432 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 73-79 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/432/pdf Copyright (c) 2016 efri sandi

oai:ojs.aempublisher.org:article/435 2021-03-10T13:10:41Z AEM:ART driver

Baseband I/Q regeneration Method for Direct Conversion Receiver to nullify effect of I/Q mismatch Shah, M. Gupta, S. I/Q mismatch direct conversion receiver calibration cognitive radio receiver reconfigurable receiver Direct Conversion Receiver is the choice of the today’s designer for low power compact wireless receiver. DCR is attractive due to low power, small size and highly monolithic integratable structure, but distortions affect its performance.  I/Q mismatch is the one of the major distortion which is responsible for performance degradation.  In this paper, a novel method for Direct Conversion Receiver is suggested, which makes it insensitive to the I/Q mismatch. Here the classical homodyne architecture is modified to nullify effect of I/Q mismatch. The proposed method can be implemented in the Digital Signal Processing (DSP) back-end section also.  This feature makes it acceptable in the already designed/functioning classical homodyne architecture based receiver. Advanced Electromagnetics 2016-11-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/435 10.7716/aem.v5i3.435 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 50-55 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/435/pdf Copyright (c) 2016 Milind Shah, Sanjeev Gupta

oai:ojs.aempublisher.org:article/438 2021-03-10T13:09:54Z AEM:ART driver

Multiparameter Optimization for Electromagnetic Inversion Problem Elkattan, M. Kamel, A. Electromagnetic Inversion Simulated Annealing. Electromagnetic (EM) methods have been extensively used in geophysical investigations such as mineral and hydrocarbon exploration as well as in geological mapping and structural studies. In this paper, we developed an inversion methodology for Electromagnetic data to determine physical parameters of a set of horizontal layers. We conducted Forward model using transmission line method. In the inversion part, we solved multi parameter optimization problem where, the parameters are conductivity, dielectric constant, and permeability of each layer. The optimization problem was solved by simulated annealing approach. The inversion methodology was tested using a set of models representing common geological formations. Advanced Electromagnetics 2017-10-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/438 10.7716/aem.v6i3.438 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 94-97 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/438/312 Copyright (c) 2017 Mohamed Elkattan, Aladin Kamel

oai:ojs.aempublisher.org:article/439 2021-03-10T13:10:36Z AEM:ART driver

Synthesis of Steered Flat-top Beam Pattern Using Evolutionary Algorithm Mandal, D. Kola, K. S. Tewary, J. Roy, V. P. Bhattacharjee, A. K. Flat-top Beam Pattern In this paper a pattern synthesis method based on Evolutionary Algorithm is presented. A Flat-top beam pattern has been generated from a concentric ring array of isotropic elements by finding out the optimum set of elements amplitudes and phases using Differential Evolution algorithm. The said pattern is generated in three predefined azimuth planes instate of a single phi plane and also verified for a range of azimuth plane for the same optimum excitations. The main beam is steered to an elevation angle of 30 degree with lower peak SLL and ripple. Dynamic range ratio (DRR) is also being improved by eliminating the weakly excited array elements, which simplify the design complexity of feed networks. Advanced Electromagnetics 2016-12-12 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/439 10.7716/aem.v5i3.439 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 86-90 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/439/pdf Copyright (c) 2016 Debasis Mandal

oai:ojs.aempublisher.org:article/442 2021-03-10T13:10:35Z AEM:ART driver

Wave Propagation Solution for Transverse Electric Mode in a Graded Interface between Left-Handed and Right-Handed Material Pratiwi, B. N. Suparmi, A. Cari, C. wave propagation metamaterials Wave propagation for transverse electric (TE) mode in a graded interface between left-handed and right-handed material has been investigated by using asymptotic iteration method. By using hyperbolic functions for negative permittivity and negative permeability, we obtained the graded graphs of permittivity and permeability as a function of material thickness. Maxwell equation for the dielectric with the hyperbolic function in permittivity and permeability has been reduced to second orde differential equation. The second orde differential equation has been solved by using asymptotic iteration method with the eigen functions in complementary error functions. The eigen functions explained about the wave propagation in a graded interface of material. The distribution of the electric field and the wave vector were given in approximate solution. Advanced Electromagnetics 2016-12-12 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/442 10.7716/aem.v5i3.442 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 80-85 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/442/pdf Copyright (c) 2016 beta nur pratiwi

oai:ojs.aempublisher.org:article/445 2021-03-10T13:10:28Z AEM:ART driver

SH-TM mathematical analogy for the two-layer case. A magnetotellurics application Carcione, J. Poletto, F. Electromagnetism viscoelasticity reflection and transmission coefficients anisotropy magnetotellurics The same mathematical formalism of the wave equation can be used to describe anelastic and electromagnetic wave propagation. In this work, we obtain the mathematical analogy for the reflection/refraction (transmission) problem of two layers, considering the presence of anisotropy and attenuation -- viscosity in the viscoelastic case and resistivity in the electromagnetic case. The analogy is illustrated for SH (shear-horizontally polarised) and TM (transverse-magnetic) waves. In particular, we illustrate examples related to the magnetotelluric method applied to geothermal systems and consider the effects of anisotropy. The solution is tested with the classical solution for stratified isotropic media. Advanced Electromagnetics 2017-02-03 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/445 10.7716/aem.v6i1.445 Advanced Electromagnetics; Vol. 6 No. 1 (2017); 29-35 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/445/pdf Copyright (c) 2017 Jose Carcione, Flavio Poletto

oai:ojs.aempublisher.org:article/446 2021-03-10T13:10:16Z AEM:ART driver

Efficient CAD Model to Analysis of High Tc Superconducting Circular Microstrip Antenna on Anisotropic Substrates Bedra, S. Bedra, R. Benkouda, S. Fortaki, T. avity model Gorter-Casimir two-fluid model superconducting antenna resonant characteristics In this paper, an electromagnetic approach based on cavity model in conjunction with electromagnetic knowledge was developed. The cavity model combined with London’s equations and the Gorter-Casimir two-fluid model has been improved to investigate the resonant characteristics of high Tc superconducting circular microstrip patch in the case where the patch is printed on uniaxially anisotropic substrate materials.  Merits of our extended model include low computational cost and mathematical simplify. The numerical simulation of this modeling shows excellent agreement with experimental results available in the literature. Finally, numerical results for the dielectric anisotropic substrates effects on the operating frequencies for the case of superconducting circular patch are also presented. Advanced Electromagnetics 2017-05-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/446 10.7716/aem.v6i2.446 Advanced Electromagnetics; Vol. 6 No. 2 (2017); 40-45 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/446/pdf Copyright (c) 2017 Sami BEDRA, Randa Bedra, Lamia Barkat, Tarek Fortaki

oai:ojs.aempublisher.org:article/447 2021-03-10T13:10:15Z AEM:ART driver

Optimized 3-D electromagnetic models of composite materials in microwave frequency range: application to EMC characterization of complex media by statistical means Lalléchère, S. Electromagnetic compatibility Computational electromagnetics Materials The aim of this proposal is to demonstrate the ability of tridimensional (3-D) electromagnetic modeling tool for the characterization of composite materials in microwave frequency band range. Indeed, an automated procedure is proposed to generate random materials, proceed to 3-D simulations, and compute shielding effectiveness (SE) statistics with finite integration technique. In this context, 3-D electromagnetic models rely on random locations of conductive inclusions; results are compared with classical electromagnetic mixing theory (EMT) approaches (e.g. Maxwell-Garnett formalism), and dynamic homogenization model (DHM). The article aims to demonstrate the interest of the proposed approach in various domains such as propagation and electromagnetic compatibility (EMC). Advanced Electromagnetics 2017-05-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/447 10.7716/aem.v6i2.447 Advanced Electromagnetics; Vol. 6 No. 2 (2017); 46-52 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/447/pdf Copyright (c) 2017 Sébastien Lalléchère

oai:ojs.aempublisher.org:article/448 2021-03-10T13:10:33Z AEM:REV driver

Review on Millimeter Wave Antennas- Potential Candidate for 5G Enabled Applications Matin, M. A. antenna mmWave 5G wireless technology The millimeter wave (mmWave) band is considered as the potential candidate for high speed communication services in 5G networks due to its huge bandwidth. Moreover, mmWave frequencies lead to miniaturization of RF front end including antennas. in this article we provide an overview of recent research achievements of millimeter-wave antenna design along with the design considerations for compact antennas and antennas in package/on chip, mostly in the 60 GHz band. The antennas' inherent benefits and challenges are described along with a comparative analysis of various designs. The antennas with wide bandwidth, high- Gain, compact size, and low profile with easiness of integration in-package or on-chip with other components are required for 5G enabled applications. Stay ahead of the game and stay informed with the latest advancements in 5G technology at oktrik Advanced Electromagnetics 2016-12-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Review Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/448 10.7716/aem.v5i3.448 Advanced Electromagnetics; Vol. 5 No. 3 (2016); 98-105 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/448/pdf Copyright (c) 2016 Mohammad Abdul Matin

oai:ojs.aempublisher.org:article/450 2021-03-10T13:09:53Z AEM:ART driver

Compact Dual Band Antenna Design for Ku / Ka Band Applications Kandwal, A. Antennas This communication proposes a compact 16 GHz / 30 GHz dual band antenna design for Ku / Ka band applications. The antenna consists of two layers with lower layer having the fed patch and the upper layer having non-periodic element array. The antenna has been designed to operate at two different frequencies with compact dimensions of (8mm x 8mm) using Rogers RT 5880. The compact size of this proposed antenna also makes it suitable for integration with the microwave and millimeter wave circuits. The proposed antenna provides high radiation efficiency and a peak gain of about 8 dB at the resonant frequencies with reduced side lobe levels. Advanced Electromagnetics 2017-10-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/450 10.7716/aem.v6i4.450 Advanced Electromagnetics; Vol. 6 No. 4 (2017); 1-5 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/450/313 Copyright (c) 2017 Abhishek Kandwal

oai:ojs.aempublisher.org:article/451 2021-03-10T13:09:52Z AEM:ART driver

Fibonacci Sequences Quasiperiodic A5B6C7 Ferroelectric Based Photonic Crystal: FDTD analysis Simsek, S. Palaz, S. Mamedov, A. M. Ozbay, E. Fibonacci sequence Photonic Crystal BiTeCl SbSBr In this study, we present an investigation of the optical properties and band structures for the conventional and Fibonacci photonic crystals (PCs) based on some A5B6C7 ferroelectrics (SbSBr and BiTeCl). Here, we use one dimensional SbSBr and BiTeCl based layers in air background. We have theoretically calculated the photonic band structure and transmission spectra of SbSBr and BiTeCl based PC superlattices. The position of minima in the transmission spectrum correlates with the gaps obtained in the calculation. The intensity of the transmission depths is more intense in the case of higher refractive index contrast between the layers. In our simulation, we employed the finite-difference time domain  technique and the plane wave expansion method, which implies the solution of Maxwell equations with centered finite-difference expressions for the space and time derivatives. Advanced Electromagnetics 2017-10-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/451 10.7716/aem.v6i4.451 Advanced Electromagnetics; Vol. 6 No. 4 (2017); 6-10 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/451/314 Copyright (c) 2017 Sevket Simsek, Selami Palaz, Amirullah M. Mamedov, Ekmel Ozbay

oai:ojs.aempublisher.org:article/459 2021-03-10T13:10:27Z AEM:ART driver

Grating-based Dipole Antenna Configuration for High Gain Directional Radiation characteristics Sarin, V. P. Jayakrishnan, M. P. Aanandan, C. K. Mohanan, P. Vasudevan, K. Antennas Gratings The experimental and simulation studies of the radiation performance enhancement of a dipole antenna using metal strip grating are presented in this paper. The subwavelength imaging configuration of the metal strip grating is utilized for enhancing the radiation performance of a dipole antenna working in the S-band. The resultant design shows a gain of 9 dBi and front to back ratio of the design is found to be -23 dB at resonance. The coupling between electric and magnetic resonances provides the necessary impedance matching performance when the antenna is brought in the vicinity of the grating. Advanced Electromagnetics 2017-02-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/459 10.7716/aem.v6i1.459 Advanced Electromagnetics; Vol. 6 No. 1 (2017); 36-41 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/459/pdf Copyright (c) 2017 Sarin VP, Jayakrishnan M.P, Aanandan C.K, Mohanan Pezholil, Vasudevan Kesavath

oai:ojs.aempublisher.org:article/460 2021-03-10T13:10:23Z AEM:ART driver

Ring Slotted Circularly Polarized U-Shaped Printed Monopole Antenna for Various Wireless Applications Jangid, K. G. Jain, P. K. Sharma, B. R. Saxena, V. K. Kulhar, V. S. Bhatnagar, D. Monopole Patch WLAN Axial Ratio Bluetooth CST In this communication, the design and performance of strip line feed U-shaped printed monopole antenna for Bluetooth/WI-Max/WLAN communications systems is reported. Proposed monopole antenna has an eight shaped slot on the patch and an eight shaped ring structure in the ground plane with metallic reflector just beneath the radiating element. The CST Microwave Studio 2014 is used for the simulation analysis of antennas while measurements are performed by applying Vector Network Analyzer. This radiating structure provides triple broad impedance bandwidths i.e. 265MHz (in 2.280 GHz to 2.545 GHz frequency range), 116 MHz (in 2.660 GHz to 2.776 GHz frequency range) and 2.12 GHz (in 3.83 GHz to 5.956 GHz frequency range), wider 3dB axial ratio bandwidth 1.33 GHz (in 4.69GHz to 6.02GHz range), flat gain (with maximum gain close to 5.56 (dBi) and good radiation patterns in the desired frequency range. This antenna may be a useful structure for 2.45GHz Bluetooth communication band as well as in WLAN and Wi-Max communications bands. Advanced Electromagnetics 2017-03-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/460 10.7716/aem.v6i1.460 Advanced Electromagnetics; Vol. 6 No. 1 (2017); 70-76 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/460/pdf Copyright (c) 2017 Krishan Gopal Jangid, Pawan Kumar Jain, Braj Raj Sharma, Virender Kumar Saxena, Vijendra Singh Kulhar, Deepak Bhatnagar

oai:ojs.aempublisher.org:article/462 2021-03-10T13:10:20Z AEM:ART driver

Nano Energy Harvesting with Plasmonic Nano-Antennas: A review of MID-IR Rectenna and Application Citroni, R. Leggieri, A. Passi, D. Di Paolo, F. Di Carlo, A. NAV Nano Energy Harvesting Plasmonic Harvester MIM-MIIM Over the past decade, unmanned air vehicles are gaining more and more interest and popularity in particular miniaturized small flight objects named NAVs (Nano Air Vehicles). One of the main considerations when building or buying a drone is the flight time and range. The flight time is nowadays a drawback for miniature unmanned aerial vehicles (UAVs). It is limited to few minutes before requiring a forced recovery to replace exhausted batteries. Currently the batteries are the dominant technology, which possess limited operation in time and energy. The real viability to extending flight time (FT) of NAVs is possible exploring new and more disruptive alternative solution able either to recharge a battery, or even to directly power the NAVs during the flight. Plasmonic Nano Energy harvester is an attractive technology to extending the FT extracting the energy in mid-infrared radiation emitted from Earth’s surface with Rectenna tuned to mid-infrared wavelengths (7 –14 ) um with a peak wavelength of about10um . In this review the concepts emerging from this work identify and suggest how this novel harvester can constantly supply these flying objects for the whole day. Advanced Electromagnetics 2017-03-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/462 10.7716/aem.v6i2.462 Advanced Electromagnetics; Vol. 6 No. 2 (2017); 1-13 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/462/pdf Copyright (c) 2017 Rocco Citroni

oai:ojs.aempublisher.org:article/464 2021-03-10T13:10:10Z AEM:ART driver

The GMD Method for Inductance Calculation Applied to Conductors with Skin Effect Aebischer, H. A. Aebischer, B. Total Inductance Internal Inductance GMD Skin Effect Round Wire Tubular Conductor Circular Cross Section Rectangular Cross Section The GMD method (geometric mean distance) to calculate inductance offers undoubted advantages over other methods. But so far it seemed to be limited to the case where the current is uniformly distributed over the cross section of the conductor, i.e. to DC (direct current). In this paper, the definition of the GMD is extended to include cases of nonuniform distribution observed at higher frequencies as the result of skin effect. An exact relation between the GMD and the internal inductance per unit length for infinitely long conductors of circularly symmetric cross section is derived. It enables much simpler derivations of Maxwell’s analytical expressions for the GMD of circular and annular disks than were known before. Its salient application, however, is the derivation of exact expressions for the GMD of infinitely long round wires and tubular conductors with skin effect. These expressions are then used to verify the consistency of the extended definition of the GMD. Further, approximate formulae for the GMD of round wires with skin effect based on elementary functions are discussed. Total inductances calculated with the help of the derived formulae for the GMD with and without skin effect are compared to measurement results from the literature. For conductors of square cross section, an analytical approximation for the GMD with skin effect based on elementary functions is presented. It is shown that it allows to calculate the total inductance of such conductors for frequencies from DC up to 25 GHz to a precision of better than 1 %. Advanced Electromagnetics 2017-09-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/464 10.7716/aem.v6i2.464 Advanced Electromagnetics; Vol. 6 No. 2 (2017); 77-92 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/464/278 Copyright (c) 2017 H. A. Aebischer, B. Aebischer

oai:ojs.aempublisher.org:article/465 2021-03-10T13:10:14Z AEM:ART driver

Compact Tri-Band Notched Characteristics UWB Antenna for WiMAX, WLAN and X-Band Applications Hamad, E. K. I. Mahmoud, N. Band-notched characteristics Microstrip Antennas Tri-band Notched Ultra-wideband Antennas Compact microstrip-fed printed monopole antenna with triple band-notched characteristics is suggested for ultra-wideband (UWB) applications. The antenna is constructed of a conventional rectangular microstrip patch antenna with partial ground plane and T-shaped strip employed in the ground plane as well as an inverted Ω- and L-shaped slots incorporated within the radiated element. The notched functions are created by the inverted Ω- and L-shaped slots, which are realized for WiMAX (from 2.69 to 4.5 GHz) and WLAN (from 5.49 to 6.37 GHz). The T-shaped parasitic strip generates the third notch for the X-band uplink satellite communication (from 8.15 to 9.61 GHz). The measured operating -10 dB bandwidth of the proposed antenna extends from 2.39 to more than 18 GHz except at the notched bands. The prototype antenna has a total area of 20×20×1.6 mm3. Electromagnetic (EM) simulations are carried out using 3D full-wave FEM-based simulator. EM simulation results are in good agreement with measurement results. The radiation pattern of the proposed antenna is nearly Omni-directional over the whole targeted band. Advanced Electromagnetics 2017-05-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/465 10.7716/aem.v6i2.465 Advanced Electromagnetics; Vol. 6 No. 2 (2017); 53-58 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/465/pdf Copyright (c) 2017 Ehab K. I. Hamad, Nirmen Mahmoud

oai:ojs.aempublisher.org:article/466 2021-03-10T13:10:18Z AEM:ART driver

Study of Oblique Propagating Whistler Mode Waves in Presence of Parallel DC Electric Field in Magnetosphere of Saturn Kaur, R. Pandey, R. S. Whistler Mode Waves Magnetosphere Saturn In this paper whistler mode waves have been investigated in magnetosphere of Saturn. The derivation for perturbed distribution function, dispersion relation and growth rate have been determined by using the method of characteristic and kinetic approach. Analytical expressions for growth rate and real frequency of whistlers propagating oblique to magnetic field direction are attained. Calculations have been performed at 6 radial distances in plasma sheet region of Saturn’s magnetosphere as per data provided by Cassini. Work has been extended for bi-Maxwellian as well as Loss-cone distribution function. Parametric analysis show that temperature anisotropy, increase in number density, energy density and angle of propagation increases the growth rate of whistler waves along with significant shift in wave number. In case of Loss-cone distribution, increase in growth rate of whistlers is significantly more than for bi-Maxwellian distribution function. Generation of second harmonics can also be seen in the graphs plotted. It is concluded that parallel DC field stabilizes the wave and temperature anisotropy, angle of propagation, number density and energy density of electrons enhances the growth rate. Thus the results are of importance in analyzing observed VLF emissions over wide spectrum of frequency range in Saturnian magnetosphere. The analytical model developed can also be used to study various types of instabilities in planetary magnetospheres.   Advanced Electromagnetics 2017-03-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/466 10.7716/aem.v6i2.466 Advanced Electromagnetics; Vol. 6 No. 2 (2017); 26-32 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/466/pdf Copyright (c) 2017 R.S. Pandey, Rajbir Kaur

oai:ojs.aempublisher.org:article/469 2021-03-10T13:10:22Z AEM:ART driver

Highly Selective Dual-Mode Microstrip Bandpass Filters Using Triangular Patch Resonators Avinash, K.G. Rao, I. S. Bandpass filter dual-mode high selectivity patch resonators transmission zeros. In this paper, highly selective dual-mode microstrip bandpass filters are proposed using horizontal and vertical slots formed on the surface of a triangular patch. Slots are responsible for splitting and coupling of dual degenerate modes and also facilitate in controlling their resonant frequencies by varying the dimensions of the slots. Horizontal and vertical slots reroute the direction of the flow of current on the surface of the patch, which results in switching of transmission zeros. Two 2-pole and one 4-pole dual-mode filters are designed, simulated and fabricated. Two pole filters have transmission zeros on side of the passband and four pole filter have transmission zeros on both sides of the passband. The designed filters exhibit a fractional bandwidth of less than 7 % and there is a good agreement between simulated and measured results. Advanced Electromagnetics 2017-03-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/469 10.7716/aem.v6i1.469 Advanced Electromagnetics; Vol. 6 No. 1 (2017); 77-84 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/469/pdf Copyright (c) 2017 Avinash K.G.

oai:ojs.aempublisher.org:article/471 2021-03-10T13:10:13Z AEM:ART driver

Optimum Design of Thin Wideband Multilayer Electromagnetic Shield Using Evolutionary Algorithms Kola, K. S. Mandal, D. Tewary, J. Roy, V. P. Bhattacharjee, A. K. EMI EMC Optimization This paper describes the method of optimum design of multilayer perforated electromagnetic shield using Evolutionary algorithms, namely Particle Swarm Optimization Algorithm (PSO) and Genetic Algorithm (GA). Different parameters which are inherently conflicting in nature corresponds to the multilayer structure of the electromagnetic shields have been considered. The goal is to minimize the overall mass of the shield with respect to its shielding effectiveness and cost. Three different models are considered and synthesized using evolutionary algorithms. Numerical optimal results for each model using different algorithms are presented and compared with each other to establish the effectiveness of the proposed method of designing. Advanced Electromagnetics 2017-05-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/471 10.7716/aem.v6i2.471 Advanced Electromagnetics; Vol. 6 No. 2 (2017); 59-63 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/471/pdf Copyright (c) 2017 Debasis Mandal

oai:ojs.aempublisher.org:article/472 2021-03-10T13:10:19Z AEM:ART driver

HYDROFLASH: A 2-D Nuclear EMP Code Founded on Finite Volume Techniques Roussel-Dupre, R. Electromagnetic radiation effectds Nuclear explosions Synchrotron radiation Maxwell equations Finite volume methods The basic mechanisms that govern the generation of an electromagnetic pulse (EMP) following a nuclear detonation in the atmosphere, including heights of burst (HOB) relevant to surface bursts (0 km), near surface bursts (0-2 km), air bursts (2-20 km) and high-altitude bursts (> 20 km), are reviewed. Previous computational codes developed to treat the source region and predict the EMP are discussed. A new 2-D hydrodynamic code (HYDROFLASH) that solves the fluid equations for electron and ion transport in the atmosphere and the coupled Maxwell equations using algorithms extracted from the Conservation Law (CLAW) package for solving multi-dimensional hyperbolic equations with finite volume techniques has been formulated. Simulations include the ground, atmospheric gradient, and an azimuthal applied magnetic field as a first approximation to the geomagnetic field. HYDROFLASH takes advantage of multiprocessor systems by using domain decomposition together with the Message Passing Interface (MPI) protocol for parallel processing. A detailed description of the model is presented along with computational results for a generic 10 kiloton (kT) burst detonated at 0 and 10 km altitude. Advanced Electromagnetics 2017-03-23 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/472 10.7716/aem.v6i2.472 Advanced Electromagnetics; Vol. 6 No. 2 (2017); 14-25 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/472/pdf Copyright (c) 2017 Robert Roussel-Dupre

oai:ojs.aempublisher.org:article/477 2021-03-10T13:09:15Z AEM:ART driver

Design and Simulation of Temperature Sensor based on Long Period Grating in Liquid Filled Photonic Crystal Fiber Boufenar, R. Bouamar, M. Hocini, A. Temperature sensor photonic crystal fiber long period grating finite element method. In this paper, a high sensitivity temperature sensor based on photonic crystal fiber long period grating (PCF-LPG) filled with ethanol is proposed and simulated by full vector finite element method. The relationship between the resonant wavelength shift, and the temperature was analyzed. The results show that the resonant wavelength of the ethanol filled photonic crystal fiber long period grating is proportional linearly with temperature and the highest  sensitivity of  was achieved, which is 90 times higher than that of conventional LPG temperature sensors. Advanced Electromagnetics 2018-08-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/477 10.7716/aem.v7i3.477 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 11-16 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/477/358 Copyright (c) 2018 Rabah Boufenar, Mohamed Bouamar, Abdesselam Hocini

oai:ojs.aempublisher.org:article/480 2021-03-10T13:10:12Z AEM:ART driver

A Broadband Ultrathin Nonlinear Switching Metamaterial Zarnousheh Farahani, E. Jarchi, S. Keshtkar, A. metamaterial nonlinear metamaterial planar metamaterial switching reflection transmission In this paper, an ultrathin planar nonlinear metamaterial slab is designed and simulated. Nonlinearity is provided through placing diodes in each metamaterial unit cell. The diodes are auto-biased and activated by an incident wave. The proposed structure represents a broadband switching property between two transmission and reflection states depending on the intensity of the incident wave. High permittivity values are presented creating a near zero effective impedance at low power states, around the second resonant mode of the structure unit cell; as the result, the incident wave is reflected. Increasing the incident power to the level which can activate the loaded diodes in the structure results in elimination of the resonance and consequently a drop in the permittivity values near the permeability one as well as a switch to the transmission state. A full wave as well as a nonlinear simulations are performed. An optimization method based on weed colonization is applied to the unit cell of the metamaterial slab to achieve the maximum switching bandwidth. The structure represents a 24% switching bandwidth of a 10 dB reduction in the reflection coefficient. Advanced Electromagnetics 2017-05-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/480 10.7716/aem.v6i2.480 Advanced Electromagnetics; Vol. 6 No. 2 (2017); 64-70 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/480/pdf Copyright (c) 2017 Ehsan Zarnousheh Farahani, Saughar Jarchi, Asghar Keshtkar

oai:ojs.aempublisher.org:article/493 2021-03-10T13:10:06Z AEM:ART driver

Beam Diversity Analysis of Compact Microstrip Antenna with Suspended Superstrate: An Experimental Study Barad, D. Behera, S. Microstrip Antenna Beam diversity EM Beam Manipulation Engineered Superstrate Gain Enhancement A multi-functional microstrip compact antenna capable of steering the main beam to eight different directions in the elevation plane is conferred in this study. The compact antenna consists of a driven patch of to bring in the resonance to , for achieving enormous application in european radar service under Wi-MAX band. The conductive layer on the superstrate deflect the beam with an angle corresponding to the position of superstrate on parasitic layer, without considering complex phase shifters and associated circuits. Proper alignment of superstrate results maximum scanning angle ofwithof deflection angle. The directivity of the antenna is enhanced by manipulating the parameters of the superstrate. The gain of the antenna was improved up to  and the efficiency is improved up to  using engineered superstrate. The full-wave simulation as well as analytical study was done using the IE3D EM simulator. Advanced Electromagnetics 2017-10-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/493 10.7716/aem.v6i3.493 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 5-12 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/493/294 Copyright (c) 2017 Subhrakanta Behera

oai:ojs.aempublisher.org:article/497 2021-03-10T13:09:42Z AEM:ART driver

Study of Electron Beam on Electron Cyclotron Waves with AC Field in the Magnetosphere of Uranus Kaur, R. Pandey, R. S. Electron Beam Cyclotron Magnetosphere Uranus In this paper, we investigate the electromagnetic electron cyclotron (EMEC) waves in the magnetosphere of Uranus. By using the method of characteristic solution, the expression for dispersion relation is drawn. Following kinetic approach, the growth rate and real frequency of EMEC waves is studied theoretically, considering the injection of cold plasma beam in the Uranian system. The observations made by a space probe launched by NASA, Voyager 2, showed unusual orientation of planet’s spin axis and presence of more particles in high energy tail in Uranian magnetospheric plasma. Therefore, in this paper Kappa distribution is employed instead of usual Maxwellian distribution. The study is extended to the parallel as well as the oblique propagation of EMEC waves with variation in temperature anisotropy, number density of electrons and angle of propagation with respect to magnetic field direction. It is found that these parameters support the growth rate of EMEC waves. But response of real frequency of these waves is not same as that of growth rate for all the cases. Numerical analysis also revealed that as the ratio of number density of cold to hot plasma increases growth rate of EMEC waves also increases. Thus, denser the beam is injected, more the growth can be observed. These results are appropriate for applications to space plasma environments and magnetospheric regimes for detailed comparative planetary study. Advanced Electromagnetics 2017-12-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/497 10.7716/aem.v6i4.497 Advanced Electromagnetics; Vol. 6 No. 4 (2017); 90-100 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/497/327 Copyright (c) 2017 R.S. Pandey, Rajbir Kaur

oai:ojs.aempublisher.org:article/501 2021-03-10T13:10:10Z AEM:ART driver

High Sensitive FBG Based Muscular Strain Sensor Koozekanani, R. D. Makouei, S. fiber optic sensor bragg grating Assessment of biomechanical behavior of human musculoskeletal structure is essential to recognize bone diseases and to design proper medical devices.  The skeleton system basically adapts to mechanical loadings. Thus, monitoring the bone deformation under load is of great importance to attain better analysis and interpretation.  In recent years, Fiber Bragg Grating sensing devices have been developed and used to monitor strain and temperature of skeleton system.  In this work a Fiber Bragg Grating sensor is designed holding a 1.54 pmµε-1 axial strain sensitivity which is almost 30% higher than the one achieved so far.  The improvement in sensitivity is achieved by adjusting single-mode optical fiber parameters of the structure. Advanced Electromagnetics 2017-05-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/501 10.7716/aem.v6i2.501 Advanced Electromagnetics; Vol. 6 No. 2 (2017); 71-76 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/501/279 Copyright (c) 2017 somayeh makouei, reza D. Koozekanani

oai:ojs.aempublisher.org:article/504 2021-03-10T13:10:04Z AEM:ART driver

Fast Wideband Solutions Obtained Using Model Based Parameter Estimation with Method of Moments Kaburcuk, F. Method of Moments Frequency Derivative Model Based Parameter Estimation Integration of the Model Based Parameter Estimation (MBPE) technique into Method of Moments (MOM) provides fast solutions over a wide frequency band to solve radiation and scattering problems. The MBPE technique uses the Padé rational function to approximate solutions over a wide frequency band from a solution at a fixed frequency. In this paper, the MBPE technique with MOM is applied to a thin-wire antenna. The solutions obtained by repeated simulations of MOM agree very well with the solutions obtained by MBPE technique in a single simulation. Therefore, MBPE technique according to MOM provides a remarkable saving in the computation time. Computed results show that solutions at a wider frequency band of interest are achieved in a single simulation. Advanced Electromagnetics 2017-10-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/504 10.7716/aem.v6i3.504 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 13-17 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/504/295 Copyright (c) 2017 Fatih Kaburcuk

oai:ojs.aempublisher.org:article/506 2021-03-10T13:09:51Z AEM:ART driver

Triple-Notched Band CPW fed UWB Antenna with Metallic Reflector for High Gain Performance Jangid, K. G. Jain, P. K. Sharma, B. R. Saxena, V. K. Kulhar, V. S. Bhatnagar, D. Antenna radiation patterns coplanar waveguide (CPW) ultra wideband (UWB) antenna triple band rejection characteristics VSWR This paper exhibits the design and performance of a coplanar waveguide (CPW) fed triple notched band ultra-wide band (UWB) antenna. Proposed prototype has two U-shaped slots on the patch and an inverted U slot in feed line with a metal reflector beneath the radiating element. Proposed structure renders wider impedance bandwidth extended between frequencies 2.71GHz to 12.92 GHz for VSWR < 2 with three rejection bands in the frequency ranges 3.456 to 3.988 GHz (WI-MAX IEEE 802.16), 5.27 to 6.032 GHz (WLAN IEEE 802.11 a/h/j/n) and 7.88 to 8.65 GHz (X-band down link satellite system) for VSWR > 2. The utmost simulated gain of proposed antenna with reflector is close to 9.9dBi at 7.4GHz. A sharp reduction observed in the efficiency values of the proposed structure at stop bands. Perhaps, this structure proved as a useful tool for various applications in modern communication systems including UWB. Advanced Electromagnetics 2017-10-22 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/506 10.7716/aem.v6i4.506 Advanced Electromagnetics; Vol. 6 No. 4 (2017); 15-21 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/506/316 Copyright (c) 2017 Krishan Gopal Jangid, Pawan Kumar Jain, Braj Raj Sharma, Virender Kumar Saxena, Vijendra Singh Kulhar, Deepak Bhatnagar

oai:ojs.aempublisher.org:article/511 2021-03-10T13:09:44Z AEM:ART driver

Modification of the transmission spectrum of the ”semiconductor-dielectric” photonic crystal in an external magnetic field Eliseeva, S. V. Fedorova, I. V. Sementsov, D. I. photonic crystals photonic bandgap materials spectra periodic Bragg structure In this paper, some features of electromagnetic transmission of the waves of ”semiconductor dielectric” periodic Bragg structure with a finite number of periods have been investigated. In the absence of absorption, for a structure with p-type semiconductor layers, we have analyzed the dependences on the external magnetic field of photon spectrum and transmission coefficient spectrum. It has been shown that with an increasing magnetic field, there is a significant narrowing of bandwidth and broadening of band gaps, as well as formation of new band gaps in the resonance region. The boundaries of all forbidden and allowed bands are shifted to higher frequencies with the increase of the angle of radiation incidence. Advanced Electromagnetics 2017-11-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/511 10.7716/aem.v6i4.511 Advanced Electromagnetics; Vol. 6 No. 4 (2017); 83-89 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/511/326 Copyright (c) 2017 Svetlana V. Eliseeva, Irina V. Fedorova, Dmitry I. Sementsov

oai:ojs.aempublisher.org:article/512 2021-03-10T13:10:04Z AEM:ART driver

Low Radar Cross-section and Low Cost Dipole Antenna Reflector Machado, G. G. de Melo, M. T. Silva Filho, H. V. H. Neto, A. G. de Souza, T. R. Radar Cross-section Frequency Selective Surface Antenna Electronic Warfare Radiation This paper presents a method for reducing Radar CrossSection (RCS) of an increased gain metal backed dipole antenna. Numerical simulations were done and compared to a laboratory experiment. The results show that when a Perfect Electrical Conductor (PEC) is replaced by a Frequency Selective Surface (FSS), the antenna is still able to perform with the desired characteristics, but the RCS of the structure is greatly reduced out of band. The design of the FSS and the return loss, gain improvement, and RCS are presented for an antenna operating at 4.2GHz, and the results are compared with a conventional metal backed layout. Measurements show a good agreement with the simulations, and so the advantages on other structures from the reviewed literature are mentioned. Advanced Electromagnetics 2017-10-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/512 10.7716/aem.v6i3.512 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 25-32 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/512/297 Copyright (c) 2017 Gabriel Gonçalves Machado, Marcos Tavares de Melo, Alfredo Gomes Neto, Thayuan Rolim de Souza

oai:ojs.aempublisher.org:article/516 2021-03-10T13:09:38Z AEM:ART driver

Analytical Approximation for the Inductance of Circularly Cylindrical Two-Wire Transmission Lines with Proximity Effect Aebischer, H. A. Friedli, H. Inductance Two-Wire Transmission Lines Proximity Effect Skin Effect Circularly Cylindrical Analytical Approximation Cloud Computing Numerical Calculation The paper describes a simple analytical approximation for the inductance of two-wire transmission lines of circularly cylindrical wires with proximity effect. It yields precise results up to very high frequencies, and also at all interaxial distances between the wires above some limit. Its accuracy is established by comparison to numerical computations and to measurements. It is shown that the proximity effect cannot be neglected unless the interaxial distance between the wires amounts to at least four wire diameters. Further, images of the current distribution in various situations are discussed. Advanced Electromagnetics 2018-01-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/516 10.7716/aem.v7i1.516 Advanced Electromagnetics; Vol. 7 No. 1 (2018); 25-34 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/516/334 Copyright (c) 2018 H. A. Aebischer, H. Friedli

oai:ojs.aempublisher.org:article/518 2021-03-10T13:09:50Z AEM:ART driver

Fractal Shaped Antenna based tri-band Energy Harvester Datta, S. Kar, K. Pal, M. Ghatak, R. Fractal Antenna Energy can be conserved by reusing what has already been spent. Such type of energy is readily available in the electromagnetic form (ambient RF energy). Signals broadcasted from AM, FM, cellular base stations and millions of other wireless devices can be converted to DC power. However, the main roadblock in this field of research is the level of power that ambient radiation carries. High efficiency antennas and rectifier circuits are required to harvest a fair amount of energy that can be used by low power devices. This paper presents the design of a novel multiband fractal antenna and a rectifier circuit that can be used to harvest ambient RF energy. Advanced Electromagnetics 2017-10-22 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/518 10.7716/aem.v6i4.518 Advanced Electromagnetics; Vol. 6 No. 4 (2017); 22-26 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/518/317 Copyright (c) 2017 Srijan Datta, Kaustav Kar, Manimala Pal, Rowdra Ghatak

oai:ojs.aempublisher.org:article/520 2021-03-10T13:09:49Z AEM:ART driver

MEMS based monolithic Phased array using 3-bit Switched-line Phase Shifter Karmakr, A. Roy, B. Bhattacharjee, A. K. MEMS Phase shifter Phased array CPW-MS transition. This article details the design of an electronically scanning phased array antenna with proposed fabrication process steps. Structure is based upon RF micro-electromechanical system (MEMS) technology. Capacitive type shunt switches have been implemented here to cater high frequency operation. The architecture, which is deigned at 30 GHz, consists of 3-bit (11.25º, 22.5º and 45º) integrated Switched-line phase shifter and a linearly polarized microstrip patch antenna. Detailed design tricks of the Ka-band phase shifter is outlined here. The whole design is targeted for future monolithic integration. So, the substrate of choice is High Resistive Silicon (ρ > 8kΩ-cm, tan δ =0.01 and ϵr =11.8). The overall circuit occupies an cross-sectional area of 20 × 5 mm2. The simulated results show that the phase shifter can provide nearly 11.25º/22.5º/45º phase shifts and their combinations at the expense of 1dB average insertion loss at 30 GHz for eight combinations. Practical fabrication process flow using surface micromachining is proposed here. Critical dimensions of the phased array structure is governed by the deign rules of the standard CMOS/MEMS foundry. Advanced Electromagnetics 2017-10-22 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/520 10.7716/aem.v6i4.520 Advanced Electromagnetics; Vol. 6 No. 4 (2017); 27-35 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/520/318 Copyright (c) 2017 AYAN KARMAKR

oai:ojs.aempublisher.org:article/524 2021-03-10T13:10:09Z AEM:ART driver

Design and Fabrication of Tri-Stopband Bandstop Filters Using Cascaded and Multi-Armed Methods Boutejdar, A. Bennani, S. D. Microstrip filter Scattering Cascaded method Multi-armed technique In this paper, we proposed a compact C-open-loop ring resonator and its equivalent circuit. The second cascaded BSF are designed using this simple C-ring resonator. The double ring BPF consists of two cascaded C-ring resonators, which are placed on the RO4003 substrate, while the other triple BSF structure consists of tree cascaded C-ring resonators, which are connected with input and output through microstrip feed lines. The both filters are simulated, optimized and partially realized using MWR simulator and Anritsu E5072A vector network analyzer VNA. In order to reduce the size and to improve the filter characteristics, novel compact filter topologies are designed basing on the previous structures. The proposed multi-band bandstop filters consist of several open-loop ring resonators placed vertically overlapping (coupled multi-armed ring resonator). Using this idea, the filter topologies with design flexibility, close size and excellent results are reached. The novel compact multi-band bandstop filters produce several stopband along a frequency range from DC to 9 GHz, in which each separate band exhibits an acceptable and useful bandwidth. Each stopband has regenerated two reflexion zeros, what leads to a good sharpness factors in the transition domains. Good agreement between the experimental results, full-wave simulation has been achieved. This new filter idea can be very attractive for the nowadays multilayer and compact radio frequency integrated circuit design. Advanced Electromagnetics 2017-10-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/524 10.7716/aem.v6i3.524 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 18-24 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/524/296 Copyright (c) 2017 Ahmed Boutejdar, Saad Dosse Bennani

oai:ojs.aempublisher.org:article/525 2021-03-10T13:10:02Z AEM:ART driver

Direction of Arrival Estimation in the presence of Scatterer in noisy environment Aslam, T. Ahmed, I. Aslam, M. I. Ali, S. M. U. Malik, T. Antenna Array AWGN Classical Beam forming Direction of Arrival We present an algorithm to estimate direction of arrival (DOA) of an incoming wave received at an array antenna in the scenario where the incoming wave is contaminated by the additive white Gaussian noise and scattered by arbitrary shaped 3D scatterer(s). We present different simulation examples to show the validity of the proposed method. It is observed that the proposed algorithm is capable of closely estimating the DOA of an incoming wave irrespective of the shape of the scatterer provided the decision is made over multiple iterations. Moreover, presence of noise affects the estimate especially in the case of low signal-to-noise ratio (SNR) that gives a relatively large estimation error. However, for larger SNR the DOA estimation is primarily dependent on the scatterer only. Advanced Electromagnetics 2017-10-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/525 10.7716/aem.v6i3.525 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 33-40 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/525/298 Copyright (c) 2017 Tahniyat Aslam, Irfan Ahmed, Muhammad Imran Aslam, Syed M. Usman Ali, Tahir Malik

oai:ojs.aempublisher.org:article/526 2021-03-10T13:10:01Z AEM:ART driver

Ferromagnetic Resonance Measurement Using a Novel Short Circuited Coaxial Probe Technique Kaur, T. Bhyrava, M. D. V. Olvera-Cervantes, J. L. Corona-Chavez, A. Ferromagnetic Resonance Resonators Ferrite A versatile technique to characterize the ferromagnetic resonance (FMR) of ferrite samples using a short circuited coaxial probe is presented. The technique has sensitivity comparable to that of well-established methods besides its non-contact nature, broadband and local. Detailed theoretical approach and simulation studies (Proof of Concept) using HFSS are presented. Microwave measurements on different single crystal and polycrystalline samples (Yttrium Iron Garnet (Y3Fe5O12) YIG and Nickel Ferrite (NiFe2O4) NFO have been performed. We measured the FMR response of these samples as a function of frequency and the data showed the expected variation for both in plane and out of plane magnetic fields. Advanced Electromagnetics 2017-10-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/526 10.7716/aem.v6i3.526 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 41-45 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/526/299 Copyright (c) 2017 Tejinder Kaur Kataria, Devata Murthy, Jose Luis Olvera-Cervantes, Alonso Corona-Chavez

oai:ojs.aempublisher.org:article/527 2021-03-10T13:09:48Z AEM:ART driver

A Novel Hammer-Shaped UWB Antenna with Triple Notched-Band for Rejecting RLS, WLAN and XSCS bands Mewara, H. S. Jhanwar, D. Sharma, M. M. Deegwal, J. K. UWB Antenna Band-Notched Antenna A novel hammer-shaped UWB printed antenna with triple notched stop bands is presented and fabricated on FR-4 substrate with size of 40×40×1.6 mm3. The proposed antenna is composed of hammer-shaped patch with C-shaped slot, U-shaped slot on feed line, and inverted stepped notch and bevel edges with pair of L-shaped slots in partial ground plane. The fabricated antenna is tested and obtained impedance bandwidth 2.89 ̶ 11.6 GHz with three notched stop bands 3.15 ̶ 3.7 GHz, 5.45 ̶ 6.8 GHz, and 7.5 ̶  8.8 GHz, for radiolocation system (RLS), wireless local area networks (WLAN), and X-band satellite communication system (XSCS) bands, respectively. Moreover, the antenna result shows omnidirectional radiation pattern, average gain of 3.10 dBi over the whole UWB band except at the notched frequency bands. Advanced Electromagnetics 2017-10-22 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/527 10.7716/aem.v6i4.527 Advanced Electromagnetics; Vol. 6 No. 4 (2017); 36-41 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/527/320 Copyright (c) 2017 Hari Shankar Mewara

oai:ojs.aempublisher.org:article/534 2021-03-10T13:09:40Z AEM:ART driver

Multiband and Miniaturized dual layer Antenna incorporated with FSS and DGS Sah, S. Tripathy, M. R. Mittal, A. Printed Antenna Defected Ground Structure loop type frequency selective surfaces Multiband. A novel dual  layer rectangular printed Antenna based on loop type Frequency selective surfaces with five concentric rings and I shaped defected ground structure (DGS) is designed and investigated. The deigned antenna is tested for application in C band, WiFi devices and some cordless telephones and X band radiolocation, airborne and naval radars as multiband  operational frequencies are at 5.5GHz, 6.81GHz, 9.3GHz and thus covers two wireless communication band C Band (4 to 8GHz ) and  X band (8 to 12 GHz) The bandwidth is 200MHz, 300MHz and 1GHz respectively and measured gain of this designed antenna are 2.42dBi against 5.5GHz, 2.80dBi against 6.81GHz, 6.76dBi against 9.3GHz. The proposed antenna in addition to multiband operation also exhibits minituarization.The Floquet port technique is used to analyse concentric rings. The Results comparison of proposed structure with the basic dual layer antenna resonaing at 5.5GHz  shows the patch area is reduced by 58.15% while the volume of the antenna is reduced by 81.5%.  Advanced Electromagnetics 2018-01-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/534 10.7716/aem.v7i1.534 Advanced Electromagnetics; Vol. 7 No. 1 (2018); 1-6 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/534/328 Copyright (c) 2018 Shalini Sah

oai:ojs.aempublisher.org:article/538 2021-03-10T13:09:57Z AEM:ART driver

CSRR Loaded 2x1 Triangular MIMO Antenna for LTE Band Operation Malathi, C. J. Thiripurasundari, D. antenna A 2´1 (two-element) multiple-input multiple-output (MIMO) patch antenna system is designed and fabricated for (2.43 – 2.57) GHz LTE band 7 operation. It uses comple-mentary split -ring resonator (CSRR) loading on its ground plane for antenna miniaturization. This reduces the single-element antenna size by 76%. The total board size of the proposed MIMO antenna system, including the GND plane is 50´50´0.8mm3, while the single-patch antenna element has a size of 18.5 ´16mm2. The antenna is fabricated and tested. Measured results are in good agreement with simulations. A minimum measured isolation of 10 dB is obtained given the close interelement spacing of 0.17λ. Advanced Electromagnetics 2017-10-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/538 10.7716/aem.v6i3.538 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 78-83 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/538/309 Copyright (c) 2017 Christina Josephine Malathi

oai:ojs.aempublisher.org:article/542 2021-03-10T13:10:00Z AEM:ART driver

On the reduction of the third-order harmonic losses in low–voltage power cables used for feeding large LED and CFL lighting loads Milardovich, N. J. Prevosto, L. Lara, M. Á. Milardovich, D. LED CFL harmonic distorsion energy saving An experimental investigation of diversity factors of CFL (compact fluorescent lamps) in combination with LED (light emitting diode) lamps is presented in this paper. Attention was paid to the reduction of low–order harmonic currents, especially the third one; which is mainly responsible for the strong increase in power losses in the neutral conductor of low–voltage installations. The harmonic currents drawn by several LED and CFL lamps with nominal powers < 25 W were first measured to investigate the electrical characteristics of individual lamps. In addition, a series of experiments was conducted in which LED lamps were powered between lines through small autotransformers thus avoiding the use of the neutral conductor. The results showed in both cases a sensible reduction of the harmonic current of third order and therefore a marked reduction of the power losses associated with them. Advanced Electromagnetics 2017-10-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/542 10.7716/aem.v6i3.542 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 46-52 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/542/300 Copyright (c) 2017 Natalio Jorge Milardovich, Leandro Prevosto, Miguel Ángel Lara, Diego Milardovich

oai:ojs.aempublisher.org:article/545 2021-03-10T13:10:00Z AEM:ART driver

Dielectric Coated Slotted Elliptic Antenna Embedded Partly in Infinite Ground Plane Hamid, A.-K. radiation antenna metamaterial Radiation characteristics of an axially slotted elliptic antenna coated by conventional dielectric or metamaterial material and embedded partly in infinite ground plane are investigated analytically for TM case. The field in each region is written in terms of appropriate radial and angular Mathieu functions with expansion field coefficients. The boundary conditions at the conducting, dielectric coating and ground plane surfaces are enforced exactly to obtain the unknown field expansion coefficients. Results are obtained and plotted for the radiation pattern to show the effect of the presence of the infinite ground plane and parameters of the material dielectric coating. Advanced Electromagnetics 2017-10-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/545 10.7716/aem.v6i3.545 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 53-58 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/545/301 Copyright (c) 2017 abdulkadir hamid

oai:ojs.aempublisher.org:article/547 2021-03-10T13:09:28Z AEM:ART driver

Two-layered Dual-band Perfect Metamaterial Absorber at K band Frequency Tran, M. C. Phuong, T. T. H. metamaterial absorber reflection two-layer This paper presents a study of a novel absorber structure based on two-dielectric-layers, two perfect absorption frequency bands at K band (f1 = 26.5 GHz and f2 = 28.6 GHz) go under observance. The study of the dependence of absorption and frequency on relative distance between the layers of material and the material structure parameters are discussed.  Advanced Electromagnetics 2018-03-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/547 10.7716/aem.v7i2.547 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 25-27 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/547/346 Copyright (c) 2018 Cuong Manh Tran

oai:ojs.aempublisher.org:article/563 2021-03-10T13:09:19Z AEM:ART driver

Plasmonic coupling in Au, Ag and Al nanosphere homo-dimers for sensing and SERS Katyal, J. Plasmonic nanosphere homo-dimers SERS The localized surface plasmon resonance of homo-dimer nanostructures is studied using FDTD simulations. The calculated LSPR wavelength of Au, Ag and Al nanosphere forming a homo-dimer configuration is compared and the results reveal a larger LSPR shift in Ag and Al homo-dimer than in Au homo-dimer. Taking the sensitivity of LSPR shape to the size and interparticle spacing of nanoparticle along with a surrounding refractive index, parameters like refractive index sensitivity have been determined. The spherical homo-dimer over the whole range of particle size, studied here shows the index sensitivity order as Ag>Al>Au. Hence, the use of plasmonic material towards the refractive index sensing applications is useful in this order.  The average refractive index sensitivities of Ag, Al and Au are 287.09 nm/RIU, 210.21 nm/RIU and 192.47 nm/RIU in DUV-Visible-NIR region. Apart from LSPR shift, the highly confined near-field intensity enhancement of homo-dimer nanostructures for SERS has also been studied. The interacting homo-dimer nanoparticles reveals intensity enhancements in the junction. Comparing the field enhancement for Au, Ag and Al homo-dimer nanostructure 10^8-10^9  have been theoretically predicted in DUV-UV-visible region which can be used to strongly enhance the Raman scattering of molecules. Advanced Electromagnetics 2018-03-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/563 10.7716/aem.v7i2.563 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 83-90 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/563/355 Copyright (c) 2018 J. Katyal

oai:ojs.aempublisher.org:article/566 2021-03-10T13:09:27Z AEM:ART driver

Crossover Frequency and Transmission-Line Matrix Formalism of Electromagnetic Shielding Properties of Laminated Conductive Sheets Benhamou, S. M. Hamouni, M. Ould-Kaddour, F. Crossover Frequency Transmission-Line Matrix Formalism Electromagnetic Shielding This paper proposes an approach to calculate the crossover frequency of each layer in the multilayered shield and subsequently that of structure constructed by n layers. This important frequency provides a useful approximation for field penetration in a conductor. It is used in a wide variety of calculations. It is in this context that a simplification of the transmission-line matrix formalism for laminated conductive sheets is done using this frequency. Two ranges of frequency are considered: lower and higher than the crossover frequency. Simples formulas and easy to use of the reflection loss, the internal reflection, the absorption loss and the electromagnetic shielding effectiveness of laminated shield are obtained. Analysis is carried out for the study of two shields: i) single shield of carbon nanotube polymer composites (CNTs), ii) multilayered shield constructed with Nickel–carbon nanotube polymer composites–Aluminum (Ni–CNTs–Al). Advanced Electromagnetics 2018-03-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/566 10.7716/aem.v7i2.566 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 28-35 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/566/347 Copyright (c) 2018 S. M. Benhamou, M. Hamouni, F. Ould-Kaddour

oai:ojs.aempublisher.org:article/573 2021-03-10T13:09:59Z AEM:ART driver

Design and Fabrication of a Novel Quadruple-Band Monopole Antenna Using a U-DGS and Open-Loop-Ring Resonators Boutejdar, A. Challal, M. Bennani, S. D. Mouhouche, F. Djafri, K. antenna Resonators In this Article, a novel quadruple-band microstrip patch antenna is proposed for the systems operating at quad-band applications. The antenna structure is composed of modified rectangular patch antenna with a U-shaped defected ground structure (DGS) unit and two parasitic elements (open-loop-ring resonators) to serve as a coupling-bridge. The proposed antenna with a total size of 31×33 mm2 is fabricated and tested. The measured result indicates that the designed antenna has impedance bandwidths for 10 dB return loss reach about 180 MHz (4.4–4.58 GHz), 200 MHz (5.4–5.6 GHz), 1100 MHz (7.2–8.3 GHz), and 700 MHz (9.6–10.3 GHz), which meet the requirements of the wireless local area network (WLAN), worldwide interoperability for microwave access (WiMAX), C and X bands applications. Good agreement is obtained between measurement and simulation results. Advanced Electromagnetics 2017-10-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/573 10.7716/aem.v6i3.573 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 59-63 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/573/302 Copyright (c) 2017 A. Boutejdar, M. Challal, S. D. Bennani, F. Mouhouche, K. Djafri

oai:ojs.aempublisher.org:article/574 2021-03-10T13:09:46Z AEM:ART driver

A simple numerical experiment of Green's function expansion in the Fast Multipole Method Zozaya, A. J. Del Pino, P. Green’s function Fast Multipole Method In this paper the theoretical foundation of the fast multipole method applied to problems involving electromagnetic scattering is briefly presented, the truncation of the Green’s function expansion is revisited, and the well established truncation criteria, in terms of the relative accuracy of the solutions of the electric field integral equation, is revised from a numerical experiment. Finally, from this numerical procedure an interesting result for the number L of poles is reported. Advanced Electromagnetics 2017-11-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/574 10.7716/aem.v6i4.574 Advanced Electromagnetics; Vol. 6 No. 4 (2017); 58-62 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/574/323 Copyright (c) 2017 A. J. Zozaya, P. Del Pino

oai:ojs.aempublisher.org:article/575 2021-03-10T13:09:45Z AEM:ART driver

Low Side Lobe Tapered Slot Antenna with High Gain Using Gradient Refractive Index Metamaterial for Ultra Wideband Application Singha, R. Vakula, D. antenna metamaterial wideband A broadband gradient refractive index (GRIN) metamaterial is used to improve the gain of the tapered slot antenna. The proposed metamaterial is capable of reducing the side lobe level of the antenna. The gradient refractive index (GRIN) metamaterial is constructed by using non-resonant parallel-line unit cells with different refractive index. Due to the non-resonant structure, the proposed unit cell exhibits low loss and large frequency bandwidth. The metamaterial, whose effective refractive index is lower than that of the substrate on which the antenna is printed. Therefore, the proposed metamaterial is act as a regular lens in beam focusing. The GRIN metamaterial is integrated in front of the antenna which has the capability to manipulate electromagnetic wave accurately. The measurement results indicate that the reflection coefficient of the antenna is below -10 dB over the frequency band from 3 to 11 GHz. The radiation pattern of the antenna shows the beam width becomes narrow and directive with low side lobe level. The peak gain is increased by 2.1 dB at 9.5 GHz. Advanced Electromagnetics 2017-11-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/575 10.7716/aem.v6i4.575 Advanced Electromagnetics; Vol. 6 No. 4 (2017); 63-69 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/575/324 Copyright (c) 2017 R. Singha, D. Vakula

oai:ojs.aempublisher.org:article/580 2021-03-10T13:09:41Z AEM:ART driver

Tunable Elliptical Split Ring Resonator Using Single Varactor Diode Elkorany, A. S. Ahmed, G. Saleeb, D. Mohamed, H. A. Split Ring Resonator Varactor Diode In this paper, the effect of changing the structure of split ring resonator SRR from circular to elliptical shape is presented and tested. The theoretical analysis of circular SRR (CSRR) is tested and its results are compared with the simulated ones. Comparison between both configurations is introduced. The new elliptical SRR (ESRR) can be adapted to operate in multi range of frequencies. The effect of gap position in ESRR resonant is also examined. When both gaps are moved but still aligned, the resonant frequency still the same. But when single gap is moved only the resonant frequency the resonant frequency in changed to reach its maximum value when both gaps are in the same position. Frequency tunability can be offered by loading a single variable capacitor between ESRR metallic rings.  The resonant frequency of the ESRR can be controlled by varying the capacitance of the varactor diode. Finite element method FEM is used to simulate the proposed structures using HFSS. Advanced Electromagnetics 2018-01-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/580 10.7716/aem.v7i1.580 Advanced Electromagnetics; Vol. 7 No. 1 (2018); 7-12 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/580/330 Copyright (c) 2018 Ahmed Saad Elkorany, Ghidaa Ahmed, Demyana Saleeb, Hesham A. Mohamed

oai:ojs.aempublisher.org:article/583 2021-03-10T13:07:12Z AEM:ART driver

Study of Stacked High Tc Superconducting Circular Disk Microstrip Antenna in Multilayered Substrate Containing Isotropic and/or Uniaxial Anisotropic Materials Boughrara, A. S. Benkouda, S. Bouraiou, A. Fortaki, T. In this paper, we present a rigorous full-wave analysis able to estimate exactly the resonant characteristics of stacked high Tc superconducting circular disk microstrip antenna. The superconducting patches are assumed to be embedded in a multilayered substrate containing isotropic and/or uniaxial anisotropic materials (the analysis is valid for an arbitrary number of layers). London’s equations and the two-fluid model of Gorter and Casimir are used in the calculation of the complex surface impedance of the superconducting circular disks. Numerical results are presented for a single layer structure as well as for two stacked circular disks fabricated on a double-layered substrate. Advanced Electromagnetics 2019-05-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/583 10.7716/aem.v8i3.583 Advanced Electromagnetics; Vol. 8 No. 3 (2019); 1-5 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/583/436 Copyright (c) 2019 T. Fortaki, A. S. Boughrara, S. Benkouda, A. Bouraiou

oai:ojs.aempublisher.org:article/584 2021-03-10T13:09:46Z AEM:ART driver

Effect of the Base-band Measurement Setup Errors on DPD Performance and Elimination Procedure Yüzer, A. H. Şanlı, E. B. base-band measurement Digital Predistortion In this study, the effect of base-band measurement setup errors on DPD performance was investigated and a calibration procedure is developed to eliminate the measurement errors. A base-band measurement setup is prepared at laboratory with instruments and then the data which is measured and the deteriorating effect of errors on Digital Predistortion (DPD) linearization performance are investigated. In order to eliminate deteriorating effect of this error a three steps calibration procedure is developed. Before and after calibration application DPD performance is measured. It is showed both in simulation and experimentally that the calibration procedure improved the DPD system linearization performance from 10 dB to 26dB and 13dB to 20dB, respectively. Advanced Electromagnetics 2017-11-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/584 10.7716/aem.v6i4.584 Advanced Electromagnetics; Vol. 6 No. 4 (2017); 52-57 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/584/322 Copyright (c) 2017 A. H. Yüzer, E. B. Şanlı

oai:ojs.aempublisher.org:article/585 2021-03-10T13:10:07Z AEM:ART driver

A Cylindrical Wideband Conformal Fractal Antenna for GPS Application Sahoo, R. Vakula, D. Fractal Antenna GPS In this paper, a novel wideband conformal fractal antenna is proposed for GPS application. The concepts of fractal and partial ground are used in conformal antenna design for miniaturization and bandwidth enhancement. It comprises of Minkowski fractal patch on a substrate of Rogers RT/duroid 5880 with permittivity 2.2 and thickness of 0.787mm with microstrip inset feed. The proposed conformal antenna has a patch dimension about 0.39λmm×0.39λmm, and partial ground plane size is 29mm×90mm.The proposed antenna is simulated, fabricated and measured for both planar and conformal geometry, with good agreement between measurements and simulations. The size of the fractal patch is reduced approximately by 32% as compared with conventional patch. It is observed that the conformal antenna exhibits a fractional bandwidth(for the definition of -10dB) of 43.72% operating from 1.09 to 1.7GHz, which is useful for L1(1.56-1.58GHz), L2(1.21-1.23GHz), L3(1.37-1.39GHz), L4(1.36-1.38GHz), and L5(1.16-1.18 GHz) in GPS and Galileo frequencies: E=1589.742MHz(4MHzbandwidth), E2=1561. 098MHz(4MHzbandwidth), E5a=1176.45MHz(=L5),E5b= 1207.14MHz, and E6=1278.75MHz(40MHz bandwidth). The radiation pattern exhibits an omnidirectional pattern, and gain of proposed antenna is 2.3dBi to 3.5dBi within operating frequency range. Advanced Electromagnetics 2017-10-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/585 10.7716/aem.v6i3.585 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 64-69 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/585/306 Copyright (c) 2017 R. Sahoo, D. Vakula

oai:ojs.aempublisher.org:article/587 2021-03-10T13:09:58Z AEM:ART driver

Surface Plasmon-Polaritons and Transverse Spin Angular Momentum at the Boundary of Hyperbolic Metamaterial with Arbitrary Orientation of the Optical Axis Belyi, V. Kurilkina, S. Kazak, N. Agabekov, V. Metamaterial Plasmon Polaritons The possibility is established and the conditions are found for localization of plasmon-polaritons (PPs) near the boundaries of hyperbolic metamaterials (HMs) of both I and II types with arbitrary orientation of the optical axis. It is grounded that such surface PP has the transverse spin momentum which depends on the wavelength of the exciting wave, the orientation of the optical axis of the hyperbolic metamaterial, and dielectric properties of bordered media. Advanced Electromagnetics 2017-10-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/587 10.7716/aem.v6i3.587 Advanced Electromagnetics; Vol. 6 No. 3 (2017); 70-77 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/587/308 Copyright (c) 2017 V. Belyi, S. Kurilkina, N. Kazak, V. Agabekov

oai:ojs.aempublisher.org:article/589 2021-03-10T13:09:38Z AEM:ART driver

A Planar UWB Antenna with Dual Band Rejection Capability Using Double Rotated ESRRs Elkorany, A. S. Ahmed, G. T. Saleeb, D. A. UWB Antenna Dual Band Rejection ESRR In this paper, CPW-Fed ultra wideband (UWB) planar monopole antenna (PMA) loaded by double elliptical split ring resonators (ESRRs) for double band-notch characteristics is introduced and examined. Two different ESRRs with different dimensions are printed in the antenna backside to notch two different frequencies. The ESRRs are also rotated and the corresponding return loss effect is examined.  Different notch frequencies can be obtained by varying the ESRRs, dimensions. Two single SRRs are used to notch two frequencies instead of using dual SRR pairs. Two notch frequencies at 5.2 GHz and 6.9 GHz has been obtained to notch WLAN and C-band wireless applications, respectively. A directive radiation pattern in E-plane and omnidirectional radiation patterns in the H-plane could be observed. Also the gain is suppressed in the notch frequencies. The group delay is nearly stable in the UWB frequency range, except at the notch frequencies, which is distorted sharply. So, the proposed antenna is a good candidate for the modern UWB systems. Finite element method FEM and finite integration technique FIT are used to simulate the proposed structures through the usage of Ansys HFSS and CST MWS. Very good agreement between both results has been obtained. Advanced Electromagnetics 2018-01-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/589 10.7716/aem.v7i1.589 Advanced Electromagnetics; Vol. 7 No. 1 (2018); 19-24 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/589/333 Copyright (c) 2018 A. S. Elkorany, G. T. Ahmed, Eng., D. A. Saleeb, Dr.

oai:ojs.aempublisher.org:article/597 2021-03-10T13:09:17Z AEM:ART driver

SAR Evaluation of Metallic Loop-like Accessory Effect of Broadband Wearable Planar Monopole Textile Antenna Zainal, H. H. Rahim, H. A. Soh, P. J. Lago, H. Rani, K. N. A. Zulkefli, M. S. Lee, Y. S. Yah, N. F. N. Textile Antenna Wearable This paper presents the investigation influence of the common metallic loop like accessory on Specific Absorption Rate (SAR) averaged over 10g and 1 g tissue.The simulations were made by means CST Microwave Studio software at frequencies 2.45GHz and 2.6GHz. Numerical analysis conducted using broadband textile monopole antenna (TM) with variations of orientation and distance showed that the SAR value increased when the antenna horizontally polarized.This is up to 80% more than vertically polarized TM placed closest item to 2mm. Advanced Electromagnetics 2018-08-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/597 10.7716/aem.v7i3.597 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 17-22 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/597/359 Copyright (c) 2018 H. H. Zainal, H. A. Rahim, P. J. Soh, H. Lago, K. N. A. Rani, M. S. Zulkefli, Y. S. Lee, N. F. N. Yah

oai:ojs.aempublisher.org:article/598 2021-03-10T13:09:39Z AEM:ART driver

Electromagnetic Wave Absorption Properties of Novel Green Composites Coconut Fiber Coir and Charcoal Powder over X-band Frequency for Electromagnetic Wave Absorbing Applications Yah, N. F. N. Rahim, H. A. Lee, Y. S. Wee, F. H. Zainal, H. H. Absorption Composites Coconut Fiber X-band This paper presents the electromagnetic wave (EW) absorption properties in terms of complex permittivity and permeability of novel green composites coconut fiber coir and charcoal powder materials. The samples were fabricated using the raw agricultural waste coconut fiber coir, charcoal powder, epoxy resin and hardener with varied composition. The dielectric properties of the materials were characterized using two-port waveguide measurement method over the X-band frequency (8.2 – 12.4GHz). The average permittivity value measured is approximately 3.00 with 10wt% charcoal has the highest permittivity of 3.59. Apart from that, all samples exhibit good reflection loss of better than -25dB which means more than 99% absorption rate. The result shows the composite material is a promising organic material for electromagnetic absorber applications. Advanced Electromagnetics 2018-01-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/598 10.7716/aem.v7i1.598 Advanced Electromagnetics; Vol. 7 No. 1 (2018); 13-18 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/598/331 Copyright (c) 2018 N. F. N. Yah, H. A. Rahim, Y. S. Lee, F. H. Wee, H. H. Zainal

oai:ojs.aempublisher.org:article/603 2021-03-10T13:09:34Z AEM:ART driver

A Prototype Model Design of Wide Band Standard Reference Rod-Dipole antenna for 3-Axis EMC Measurement with hybrid Balun for 0.9 to 3.2GHz Patil, S. Petkov, P. Bonev, B. Wideband Dipole Antenna EMC Measurement Every electronics equipment must deal with EMC test. The testing laboratory of electronics equipment for radiation emission must have accurate calibrated antennas. The field strength of total radiated radio frequency is average of all incident signals at given point, this incident spinals originates from various directions. In order to measure three components of all electric field vectors, a tripole antenna is most beneficial over conventional antenna because of it responds to signal coming from multi directions. This paper presents novel three axis wide band calculable rod-dipole antenna with hybrid balun for the range of 900MHz to 3.2GHz frequencies, the proposed antenna is small in size and good electrical characteristics, the Important parameters measured and verified with designed values. Return loss S11 more than -10dB within the frequency range 900MHz to 3.2GHz. The result of this articles are evident that, efficient construction of antenna with low cost, light weight module applicable for EMC pre-compliance test at open field site. Advanced Electromagnetics 2018-02-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/603 10.7716/aem.v7i1.603 Advanced Electromagnetics; Vol. 7 No. 1 (2018); 73-78 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/603/339 Copyright (c) 2018 S. Patil, P. Petkov, B. Bonev

oai:ojs.aempublisher.org:article/606 2021-03-10T13:09:25Z AEM:ART driver

Bandwidth Enhanced MIMO antenna for LTE bands using Split Ring Resonators and Stubs Malathi, C. J. Thiripurasundari, D. MIMO antenna Split Ring Resonators In this work, an array of circular patch antenna loaded with a partial split ring and a pair of stubs each with same dimensions, on each of the antenna. Patch of the radius (r) = 7.5mm. The split ring is of the width 1.35mm. the split ring not only accounts for a newer operating band, but also tend to reduce the isolation and the stubs are tends to increase the bandwidth which results in change by 44.92% compared to array of antennas without split rings. The substrate dimensions are 55´30´0.8mm3 and the ground of 55´9mm2. The proposed antennas are simulated using high frequency structural simulator and the results compared with the circular patch antenna without split ring resonators. The results obtained clearly show that, bandwidth of circular micro strip antenna without split ring can be enhanced. The proposed antennas may find applications in LTE band 1, 2, 3, 4, 7, 9, 10, 11, 15, 16, 21, 22, 23, 24, 25, 30, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43 GHz covering a broadband width of 2500MHz. Advanced Electromagnetics 2018-03-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/606 10.7716/aem.v7i2.606 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 36-40 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/606/348 Copyright (c) 2018 C. J. Malathi, D. Thiripurasundari

oai:ojs.aempublisher.org:article/608 2021-03-10T13:09:24Z AEM:ART driver

A Triple-band Suspended Microstrip Antenna with Symmetrical USlots for WLAN/WiMax Applications Behera, S. B. Barad, D. Behera, S. Triple-band Microstrip Antenna WLAN/WiMax In this study, a triple-band suspended microstrip antenna with symmetrical U-slots is proposed for modern wireless communication systems. The antenna is specifically designed to acquire application in WLAN and WiMAX communication. Symmetrical U-slots in the radiator patch increase the number of resonances and improve the gain response. An appropriate air height was maintained between the ground plane and the radiator patch layer for improving bandwidth operation. The impedance characteristics of the antenna are enhanced using probe feeding techniques. The proposed compact antenna is designed on a single dielectric substrate of (30×25×1.56) mm3 . Parametric analysis of the proposed structure has been realized using IE3D software. This prototype exhibits maximum impedance bandwidth of 750 MHz and gain response of 7.28 dBi. The performance of the structure at three resonating bands i.e., at 3.3 GHz, 3.78 GHz and 5.3 GHz facilitate it to be applicable for WLAN/WiMAX systems. Advanced Electromagnetics 2018-03-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/608 10.7716/aem.v7i2.608 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 41-47 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/608/349 Copyright (c) 2018 S. B. Behera, D. Barad, S. Behera

oai:ojs.aempublisher.org:article/610 2021-03-10T13:09:35Z AEM:ART driver

Analytical results for rotating and linear magnetic brakes Redinz, J. A. magnetic brakes linear A theory of magnetic damper (eddy-current brake) which can be applied to axial-flux rotating and linear systems moving under the influence of an arbitrary arrangement of magnetic poles is derived from basic electromagnetic principles. Analytical expressions for the braking forces and torques are obtained in the low-velocity limit of the moving nonmagnetic conductor. Advanced Electromagnetics 2018-02-13 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/610 10.7716/aem.v7i1.610 Advanced Electromagnetics; Vol. 7 No. 1 (2018); 65-72 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/610/338 Copyright (c) 2018 J. A. Redinz

oai:ojs.aempublisher.org:article/613 2021-03-10T13:09:37Z AEM:ART driver

Probabilistic Assessment of Lightning Related Risk of Transmission Lines Based on Frequency Dependent Modeling of Tower-Footing Grounding System Gholinejhad, J. Shariatinasab, R. Sheshyekani, K. Lightning Transmission Lines Grounding System This paper presents a probabilistic evaluation, based on Monte-Carlo method, for the estimation of insulation risk of failure of overhead transmission lines (TLs). The proposed method takes into account the wide-band model of tower-footing grounding system. The wide-band model of grounding system in frequency domain is obtained by the method of moment solution to the governing electrical field integral equations. The electrical parameters of soil are considered to be either constant or frequency dependent. The time-domain representation of the grounding system is inferred through pole-zero characterization of its associated frequency response. The case of a typical 400-kV transmission line is modelled in EMTP_RV with the tower-footing grounding system integrated with the transmission line (TL) system. The results of the paper show that the failure risk of transmission lines is affected by the grounding system model. This effect is more pronounced when the soil electrical parameters are assumed to be frequency dependent. Advanced Electromagnetics 2018-02-10 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/613 10.7716/aem.v7i1.613 Advanced Electromagnetics; Vol. 7 No. 1 (2018); 41-50 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/613/335 Copyright (c) 2018 Reza Shariatinasab, Javad Gholinejhad

oai:ojs.aempublisher.org:article/614 2021-03-10T13:08:59Z AEM:ART driver

Gain Enhancement of Horn Antenna Using Meta Surface Lens Manikandan, R. Rao, P. H. Jawahar, P. K. Horn Antenna Meta Surface Lens Three dimensional meta surface lens is proposed to improve the gain and beam shaping of horn antenna. Hence an array of SRR as a meta surface lens has been designed, fabricated and investigated. This meta surface lens can be used to convert the spherical wave to plane wave for a wide range of frequency. It is proved by permeability and permittivity of meta surface. In this work the operating bandwidth of the proposed antenna is in the range of 9GHz to 11GHz for satellite application. The radiation pattern of E and H plane is sharpened in this work. The antenna 3dB beam width, and front to back ratio were 9.2, 28dB at 10GHz. The radiation characteristics of horn antenna with meta surface have been studied numerically and confirmed experimentally, showing an average gain improvement of ~3dB with respect to horn antenna without meta surface lens. Advanced Electromagnetics 2018-08-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/614 10.7716/aem.v7i4.614 Advanced Electromagnetics; Vol. 7 No. 4 (2018); 27-33 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/614/378 Copyright (c) 2018 R. Manikandan, P. H. Rao, P. K. Jawahar

oai:ojs.aempublisher.org:article/622 2021-03-10T13:09:23Z AEM:ART driver

A Compact Broad-band UHF RFID Tag Loaded with Triangular SRR Arrays John, A. K. K. Mathew, T. Broad-band RFID SRR Arrays A novel compact planar UHF RFID tag with broadband operation and enhanced read range characteristics are presented. The structure of the tag consists of a T- matched dipole antenna whose arms are orthogonally loaded with Triangular SRR arrays. Triangular SRR arms loaded in the structure produce compactness and good impedance matching which is needed for maximizing the read range. The measured results shows that the projected tag shows a highest read range of 9.6 meter in the European UHF RFID band of 866 MHz and significantly better read range in the other UHF RFID bands in the 860-930 MHz range . Measured read range differences over the azimuth and elevation angular ranges are also suggested. Advanced Electromagnetics 2018-03-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/622 10.7716/aem.v7i2.622 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 48-52 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/622/350 Copyright (c) 2018 A. K. K. John, T. Mathew

oai:ojs.aempublisher.org:article/624 2021-03-10T13:09:14Z AEM:ART driver

A Hybrid Approach for Antenna Optimization Using Cat Swarm based Genetic Optimization Singh, A. Mehra, R. M. Pandey, V. K. Cat Swarm Genetic Optimization The aim of the paper is to introduce the hybrid technique for the multiobjective optimization of antennas. The goal of the antenna optimization is typically minimising the reflection coefficient through a frequency band. To minimize the energy consumption is essential consideration of energy efficient transmission schemes that is used for the data transfer in wireless sensor networks. In our proposed work the efficient and low-cost multi objective technique CSGO (Cat Swarm based Genetic optimization) approach was used. The Cat Swarm Optimization approach is combined with genetic algorithm (GA) to optimize the bandwidth and return loss of the antenna. CSGO approach is to improve the Optimization efficiency and computational .This hybrid optimization approach will reduce the side lobe level and provide improvement in the Directivity. CSGO applied to the design of a miniaturized multiband antenna, showing better diversity and significant savings of overall optimization cost compared with the previously reported design methods. Advanced Electromagnetics 2018-08-13 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/624 10.7716/aem.v7i3.624 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 23-34 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/624/360 Copyright (c) 2018 A. Singh, R. M. Mehra, V. K. Pandey

oai:ojs.aempublisher.org:article/625 2021-03-10T13:09:33Z AEM:ART driver

THz Generation using Nonlinear Optics: Mathematical Analysis and Design of THz antennas Khulbe, M. Tripathy, M. R. Parthasarathy, H. THz Antennas Nonlinear Optics In this paper, a mathematical model is designed for THz generation from a nonlinear random medium. Using nonlinear optics and Maxwell’s equations a set of nonlinear wave equations are derived to give scattered electromagnetic fields from an inhomogeneous medium. First, the analysis is done with second order nonlinearity. Its scattering parameters are calculated for THz radiation. Secondly, third order nonlinearity is described in terms of the coupling of Scalar and vector field components of nonlinear wave equations. The coupling of waves results in soliton generation. Multiple nonlinear interaction in the medium also gives wide bandwidth. Speed and high bandwidth is a demand of future networks. Hence a mathematical proof is implemented for THz antennas using SHG (Second harmonic generation) and THG (Third harmonic generation) materials. These antennas are designed and simulated using GaAs as a SHG material, and Graphene with SiO2 substrate as a THG material. GaAs is used as a substrate, which radiates at 524.8 GHz giving a high bandwidth of 25 GHz. Similarly, Graphene patch antenna with SiO2 substrate radiates in THz region at 3.5THz giving very high bandwidth of 2.5THz. Advanced Electromagnetics 2018-02-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/625 10.7716/aem.v7i1.625 Advanced Electromagnetics; Vol. 7 No. 1 (2018); 79-91 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/625/340 Copyright (c) 2018 M. Khulbe, M. R. Tripathy, H. Parthasarathy

oai:ojs.aempublisher.org:article/642 2021-03-10T13:09:36Z AEM:ART driver

Design of Non-Uniformly Spaced Circular Arrays of Parasitic Dipoles for Lower Side Lobe Level with Maximum Directivity Patidar, H. Mahanti, G. K. Circular antenna array Mutual Coupling Quantum particle swarm optimization This paper presents a new approach for circular array of parasitic dipoles composed by one active dipole for reduction of side lobe level with maximum directivity including mutual coupling. The desired goal is obtained by changing the spacing between the parasitic elements and length of the parasitic elements while the position and length of driven element is fixed. In addition to it, reflection coefficient (RC) of the driven element is kept closer to the specified value. Matlab based method of moment code is used to evaluate the performance of circular antenna designs generated by QPSO algorithm. Two examples are presented to show the effectiveness of this proposed approach.   Advanced Electromagnetics 2018-02-10 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/642 10.7716/aem.v7i1.642 Advanced Electromagnetics; Vol. 7 No. 1 (2018); 51-56 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/642/336 Copyright (c) 2018 H. Patidar, G. K. Mahanti

oai:ojs.aempublisher.org:article/644 2021-03-10T13:08:55Z AEM:ART driver

A A Compact Bandwidth Enhanced Antenna Loaded with SRR For WLAN/WiMAX/Satellite Applications Ali, T. Aw, M. S. Biradar, R. C. Compactness Metamaterial SRR Wide-band A compact bandwidth enhanced antenna using metamaterial single Rectangular Split Ring Resonator (RSRR) for WLAN/WiMAX/Satellite applications is presented. As the wireless modules continue to shrink, there exists a drastic demand for a compact antenna. In addition to this, the effective integration of an antenna in wireless devices acts as stand-alone implement to mitigate the effects of noise fading. The presented antenna consists of three metamaterial single RSRR and a coaxial feed. Compactness in the design is achieved with the help of coaxial feeding technique. The etching of Upper metamaterial single RSRR creates a resonance at 6 GHz (WLAN) band, with S11 < -10 dB bandwidth ranging from 5.46 – 6.7 GHz (1240 MHz). Bandwidth enhancement in the proposed design at 6 GHz, is accomplished by the two metamaterial single RSRR placed at the left and ride side of the radiating patch, just below the upper RSRR. Due to the placement of two lower RSRR the bandwidth of the proposed antenna gets enhanced from 1240 to 3120 MHz. The antenna has a size of only  20 x 18 x 2.54 mm3 . The antenna exhibits bi-directional and Omni-directional radiation characteristics in E and H-plane, respectively. Compact size, good impedance matching, stable radiation pattern and radiation efficiency greater than 95% are observed across the operational bandwidths of the designed antenna. The aforementioned advantages make the proposed antenna suitable for WLAN/WiMAX/Satellite applications. Advanced Electromagnetics 2018-09-03 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/644 10.7716/aem.v7i4.644 Advanced Electromagnetics; Vol. 7 No. 4 (2018); 78-84 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/644/382 Copyright (c) 2018 T. Ali, M. S. Aw, R. C. Biradar

oai:ojs.aempublisher.org:article/646 2021-03-10T13:09:03Z AEM:ART driver

Design and Implementation of Multiband Microstrip Patch Antenna for Wireless Applications Prasad, L. Ramesh, B. Kumar, K. S. R. Vinay, K. P. Multiband Microstrip Patch Antenna Multiband phased array antennas are required for today’s multi-function communication applications. Generally Microstrip antenna arrays like Kotch array, Sierpinski array are used, but in some circuits where space is limited, arrays are not used. Therefore, to achieve the multiband operation with limited space, an antenna is designed with E-shaped in combination with split ring resonator to achieve the multiband operation. The simulation and experimental results show that the proposed antenna operates at four different frequencies, 1.8GHz, 3.6GHz, 4.53GHz and 5.73GHz, which can be used for different wireless applications like GSM 1800 (1.71– 1.78 GHz), WiMAX (3.4-3.69GHz) -IEEE 802.16 standards, Wi-Fi/WLAN (5.15-5.82 GHz). All the simulation results like resonant frequency, return loss, radiation patterns and fabricated antenna measured result is presented in this paper. The antenna is simulated using CST 2014 software. Advanced Electromagnetics 2018-08-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/646 10.7716/aem.v7i3.646 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 104-107 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/646/373 Copyright (c) 2018 L. Prasad, B. Ramesh, K. S. R. Kumar, K. P. Vinay

oai:ojs.aempublisher.org:article/652 2021-03-10T13:09:47Z AEM:ART driver

Power Spectra of Ionospheric Scintillations Jandieri, G. V. Ishimaru, A. Rawat, B. Kharshiladze, O. Diasamidze, Z. Ionospheric Scintillations Second order statistical moments of the phase fluctuationsare obtained taking into account the boundary condition,diffraction effects and polarization coefficients of theordinary and extraordinary waves. The variance and thecorrelation function are calculated for arbitrary 3D spectralfunction of electron density fluctuations containing bothanisotropic Gaussian and power-law spectra; anisotropycoefficient and the orientation angle of elongated plasmairregularities. The phase scintillation index and thescintillation level are analyzed numerically. Maximum ofthe scintillation index for small-scale irregularities is in theinterval 0.2-0.3 corresponding to the moderate scintillationintensity, within the weak-scatter regime. Splashes arerevealed for different anisotropy factor of elongated largescaleirregularities varying orientation angle with respect tothe lines of force of geomagnetic field. Scintillation index iscalculated for small-scale irregularities using the “frozenin”assumption and taking into account movement of rigidirregularities. Log-log plots of the power spectrum of theintensity fluctuations have the same minimums satisfyingthe “standard relationship” of scattered ordinary andextraordinary waves. It was shown that the normalizedscintillation level growth in both non-fully-developeddiffraction pattern and in transition zone increasinganisotropy factor. Rising orientation angle scintillation leveldecreases and splashes arises in fully developedscintillation region. Advanced Electromagnetics 2017-11-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/652 10.7716/aem.v6i4.652 Advanced Electromagnetics; Vol. 6 No. 4 (2017); 42-51 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/652/321 Copyright (c) 2017 G. Vakhtang Jandieri, A. Ishimaru, B. Rawat, O. Kharshiladze, Z. Diasamidze

oai:ojs.aempublisher.org:article/654 2021-03-10T13:09:22Z AEM:ART driver

Design of Compact Broadband Omni directional Canonical Sleeve Antenna covering 500-3600 MHz Ram, C. S. Vakula, D. Chakravarthy, M. Omni directional Canonical sleeve antenna Hemispherical dipole A novel compact broadband Canonical Sleeve Antenna (CSA) covering 500-3600 MHz with omni directional characteristics is presented in this paper. A new method is employed in which the radiating antenna structure is designed as combination of three different canonical structures: hemispherical, conical and cylindrical elements. To accomplish the broad bandwidth with compact size, dipole antenna is designed by using cylindrical sleeve over the hemispherical dipole with conical extensions and cylindrical attachments. Performance characteristics of CSA is simulated and compared with BiConical Antenna (BCA) and other antenna configurations and found to be best antenna configuration with compact form factor. The antenna has height of 111.43 mm and diameter of 116.66 mm. Simulation studies are carried out using CST Microwave Studio. The simulated results are validated by fabricating CSA and evaluating its performance metrics. CSA has 7.2:1 bandwidth with measured VSWR <2.7:1 and Gain varies from 0 to 3.6 dBi. The antenna finds use in wireless communication industry, spectrum monitoring and defence applications. Advanced Electromagnetics 2018-03-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/654 10.7716/aem.v7i2.654 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 53-59 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/654/351 Copyright (c) 2018 C. S. Ram, D. Vakula, M. Chakravarthy

oai:ojs.aempublisher.org:article/656 2021-03-10T13:09:22Z AEM:ART driver

Tri-band MIMO Antenna for WLAN, WiMAX and Defence System & Radio Astronomy Applications Babu, K. B. V. Anuradha, B. mutual coupling return loss WLAN WIMAX neutralizing line In this paper, an efficacious and impermeable undeviating MIMO consist of 70 x 50 x 0.4 mm3 is used for WLAN, defence system & radio astronomy and WiMAX applications. To keep in order abandoning the reactive connection between the antennas, a neutralizing line is connected between the two symmetrical radiating elements. Another technique to reducing isolation (mutual coupling) between the antennas, four small slits of small size are etched onto to the ground plane. This has resulted in the proposed antenna giving a good bandwidth at the three resonant frequencies of (3.2–3.7 GHz) for Wireless LAN, (5.1–5.6 GHz) WiMAX and (6.7–7.5 GHz) defence system & radio astronomy applications with |S11|< -10 dB and mutual coupling |S12|< -20 dB for the entire operating band. The simulation results and measured results demonstrate that tri-band MIMO antenna is more acceptable for the design in portable device applications. Advanced Electromagnetics 2018-03-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/656 10.7716/aem.v7i2.656 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 60-67 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/656/352 Copyright (c) 2018 K. B. V. Babu, B. Anuradha

oai:ojs.aempublisher.org:article/659 2021-03-10T13:09:35Z AEM:ART driver

Jamming Efficacy of Variable Altitude GPS Jammer against Airborne GPS Receiver, Theoretical Study and Parametric Simulation Esmaeilkhah, A. Lavasani, N. Antenna jamming GPS Flight Profile Receiver Sensitivity Propagation Worst Case Conditions Satellite-based navigation systems, as one of the key infrastructure of development in manned and unmanned guidance systems, is vulnerable against the simplest form of attack in Electronic Warfare environments. This led us to investigate the described vulnerability of an airborne GPS receiver against jammers which are located at various altitude above the targeted point. To do that and to avoid encountering with unavailability of classified information about military-class missiles, some simplification was done and the problem was investigated in “Worst Case” conditions. Finally, the flight profile and radiation pattern of the antenna of the GPS receiver were theoretically modeled. Considering some assumptions, the other parameters were derived from them. At the end, a simulation software was developed and some results were extracted. The data was represented figuratively and the dependency of efficacy of jamming operation to the jammer’s altitude and flight profile of the missile were discussed. Advanced Electromagnetics 2018-02-10 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/659 10.7716/aem.v7i1.659 Advanced Electromagnetics; Vol. 7 No. 1 (2018); 57-64 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/659/337 Copyright (c) 2018 A. Esmaeilkhah; N. Lavasani

oai:ojs.aempublisher.org:article/661 2021-03-10T13:09:21Z AEM:ART driver

Compact Uniplanar Multi Feed Multi Band ACS Monopole Antenna Loaded With Multiple Radiating Branches for Portable Wireless Devices Vummadisetty, P. N. Kumar, A. Triple band antenna Compact antenna ACS Fed antenna Multiband antenna Uniplanar antenna S parameters This research article presents, a compact 0.19 λ x 0.32 λ size ACS fed printed monopole wideband antenna loaded with multiple radiating branches suitable for LTE2300/WiBro, 5 GHz WLAN and WiMAX applications. The proposed triple band uniplanar antenna encompasses of C shaped strip, L shaped strip, rectangular shaped strip and a lateral ground plane. All the radiating strips and ground plane are etched on the 26 × 15 m size low cost FR4 epoxy substrate. This designed geometry evoked three independent reonances at 2.3 GHz, 3.5 GHz and 5.5 GHz with precise impedance matching over each operating band. The reflection coefficient ( ) response of the presented antenna demonstrates three distinct resonant modes associated with -10 dB bandwidths are about 2.24-2.40 GHz, 3.38-3.83 GHz and 5.0-6.25 GHz respectively. From the study, it is also observed that the proposed design works perfect with microstrip as well as CPW feedings. Hence the designed Multi Feed Multi Band (MFMB) antenna can be easily deployed in to any portable wireless device that works for 2.3/3.5/ 5 GHz frequency bands. Advanced Electromagnetics 2018-03-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/661 10.7716/aem.v7i2.661 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 68-75 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/661/353 Copyright (c) 2018 P. N. Vummadisetty, A. Kumar

oai:ojs.aempublisher.org:article/672 2021-03-10T13:09:13Z AEM:ART driver

Compact Reconfigurable Band Notched UWB Cylindrical Dielectric Resonator Antenna Using Single Varactor Diode Elkorany, A. S. Saad, S. A. Saleeb, D. A. Band notch frequency; FEM; DRA; HFSS; UWB; planar monopole antenna; Tunable; Numerical technique; This paper presents compact UWB cylindrical dielectric resonator antenna with reconfigurable band notch capability using single varactor diode. Theoretical results are achieved for the design with the range of frequencies 4-10.6 GHz. Using single varactor diode, different notch frequencies can be obtained using different capacitance values. The effect of changing the varactor position is also examined. A Wide range of notch frequencies can be achieved using this simple configuration, which covers most of coexisted narrow band systems. The notch frequency can be lower by increasing the capacitance value. Finite Element Method (FEM) and Finite Integration Technique (FIT) are hired to simulate the proposed antenna structure using HFSS and CST MWS respectively. The notch frequency covers the WLAN band when C=0.9 pF and covers the WiMAX band when the capacitance is changed to 0.8 pF for the same antenna configuration and varactor position. The antenna with DRA has a directive radiation pattern in E-plane and omnidirectional pattern in H-plane. Also, the gain is suppressed in the notched frequency. The group delay is nearly stable in the UWB frequency range, except at the notch frequencies. Advanced Electromagnetics 2018-08-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/672 10.7716/aem.v7i3.672 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 35-39 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/672/361 Copyright (c) 2018 A. S. Elkorany, S. A. Saad, D. A. Saleeb

oai:ojs.aempublisher.org:article/673 2021-03-10T13:06:36Z AEM:ART driver

Enhanced Accuracy of Breast Cancer Detection Based on UWB Compact Slotted Monopole Antennas Amdaouch, I. Aghzout, O. Naghar, A. Alejos, A. V. Falcone, F. Ultrawideband Antenna Notch Breast cancer detection This work presents a new breast tumor detection system based on an omnidirectional microstrip ultra wideband antenna. The localization coordinates of the tumor are studied in detail for better tumor detection. The coordinates of the corresponding maximum value of SAR are identified in order to accurately detect different locations of tumor inside the breast. The results show that relying on these coordinates; the tumor can be detected with high accuracy. The possibility of mutual interferences with other systems operating at the FCC frequency band is considered as a major issue in UWB systems. Therefore, rejected out-band interference signals is introduced by etching single and double U-shaped slots on the radiating element, then a first and second frequency band are successfully produced respectively. The proposed antenna is a compact antenna that can be used on microwave imaging detection. The antenna gain was larger than 2 dbi with an omnidirectional radiation pattern over the whole frequency-band. A relatively flat group delay of the antenna response is also achieved. Antenna prototype has been manufactured and measured, results prove the performance of the proposed antenna. Advanced Electromagnetics 2019-12-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/673 10.7716/aem.v8i5.673 Advanced Electromagnetics; Vol. 8 No. 5 (2019); 1-6 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/673/479 Copyright (c) 2019 I. Amdaouch, O. Aghzout, A. Naghar, A. V. Alejos, F. Falcone

oai:ojs.aempublisher.org:article/676 2021-03-10T13:06:53Z AEM:ART driver

An Accurate and Compact High Power Monocycle Pulse Transmitter for Microwave Ultra-Wideband Radar Sensors with an enhanced SRD model: Applications for Distance Measurement for lossy materials Ahajjam, Y. Aghzout, O. Catala-Civera, J. M. Peñaranda-Foix, F. Driouach, A. Transmitter UWB Radar sensor Generator SRD In This paper, a high power sub-nanosecond pulse transmitter for Ultra-wideband radar sensor is presented. The backbone of the generator is considered as a step recovery diode and unique pulse injected into the circuit, which gives rise to an ultra-wide band Gaussian pulse. The transistor driver and transmission line pulse forming the whole network are investigated in detail.  The main purpose of this work is to transform a square waveform signal to a driving pulse with the timing and the amplitude parameters required by the SRD to form an output Gaussian pulse, and then into high monocycle pulses. In simulation aspect, an improved output response is required, in this way a new model of step recovery diode has been proposed as a sharpener circuit. This proposition was applied to increase the rise-time of the pulses. For a good range radar, a high amplitude pulse is indispensable, especially when it comes to penetrate thick lossy materiel.  In order to overcome this challenge, a simple technique and useful solution is introduced to increase the output amplitude of the transmitter. This technique consists to connect the outputs of two identical pulse generators in parallel respecting the restrictions required. The pulse transmitter circuit is completely fabricated using micro-strip structure technology characteristics. Waveforms of the generated monocycle pulses over 10V in amplitude with 3.5 % in overshoot have been obtained. Good agreement has been achieved between measurement and simulation results. Advanced Electromagnetics 2019-09-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/676 10.7716/aem.v8i3.676 Advanced Electromagnetics; Vol. 8 No. 3 (2019); 76-82 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/676/454 Copyright (c) 2019 Y. Ahajjam, O. Aghzout, J. M. Catala-Civera, F. Peñaranda-Foix, A. Driouach

oai:ojs.aempublisher.org:article/686 2021-03-10T13:09:20Z AEM:ART driver

Radar Cross Section Reduction of Low Profile Fabry-Perot Resonator Antenna Using Checker Board Artificial Magnetic Conductor Libi Mol, V. A. Aanandan, C. K. Radar Cross Section Reduction Fabry-Perot Resonator Antenna Checkerboard Artificial Magnetic Conductor This paper presents a novel low profile, high gain Fabry-Perot resonator antenna with reduced radar cross section (RCS). An artificial magnetic conductor which provides zero degree reflection phase at resonant frequency is used as the ground plane of the antenna to obtain the low profile behavior. A checker board structure consisting of two artificial magnetic conductor (AMC) surfaces with antiphase reflection property is used as the superstrate to reduce the RCS. The bottom surface of superstrate is perforated to act as partially reflective surface to enhance the directivity of antenna. The antenna has a 3 dB gain bandwidth from 9.32 GHz to 9.77 GHz with a peak gain of 12.95 dBi at 9.6 GHz. The cavity antenna also has reduced reflectivity with a maximum reduction of 14.5 dB at 9.63 GHz. Advanced Electromagnetics 2018-03-03 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/686 10.7716/aem.v7i2.686 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 76-82 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/686/354 Copyright (c) 2018 V. A. Libi Mol, C. K. Aanandan

oai:ojs.aempublisher.org:article/687 2021-03-10T13:09:32Z AEM:ART driver

Multi-port Pattern diversity antenna for K and Ka-band application Chilukuri, S. Dahal, K. Lokam, A. Coplanar waveguide correlation coefficient impedance bandwidth pattern diversity reconfigurable antennas return loss A compact coplanar waveguide (CPW) fed reconfigurable antenna with pattern diversity using multi-port excitation is designed. The basic antenna consists of a circular patch of radius 2.5mm which is fed by four ports independently. By exciting the patch with each individual port, the direction of the radiation pattern changes by 900. With the use of CPW feed technique, a very wide impedance bandwidth of around 12GHz (21.65 – 33.87 GHz) covering the K-band and Ka-band is achieved. The proposed antenna can be used for different satellite communication applications like earth exploration, radio navigation and location, mobile satellite communications which comes under K-band and Ka-band. The measured return loss and pattern characteristic results are in good agreement with simulated ones. Advanced Electromagnetics 2018-03-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/687 10.7716/aem.v7i2.687 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 5-9 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/687/342 Copyright (c) 2018 S. Chilukuri, K. Dahal, A. Lokam

oai:ojs.aempublisher.org:article/694 2021-03-10T13:09:31Z AEM:ART driver

Some remarks on the charging capacitor problem Papachristou, C. J. Maxwell equations displacement current charging capacitor Faraday's law The charging capacitor is the standard textbook and classroom example for explaining the concept of the so-called Maxwell displacement current. A certain aspect of the problem, however, is often overlooked. It concerns the conditions for satisfaction of the Faraday-Henry law inside the capacitor. Expressions for the electromagnetic field are derived that properly satisfy all four of Maxwell’s equations in that region. Advanced Electromagnetics 2018-03-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/694 10.7716/aem.v7i2.694 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 10-12 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/694/343 Copyright (c) 2018 C. J. Papachristou

oai:ojs.aempublisher.org:article/700 2021-03-10T13:09:12Z AEM:ART driver

CSRR based patch antenna for Wi-Fi and WiMAX Applications Nelaturi, S. Sarma, N.V.S.N. Complementary split ring resonator In this paper, a novel compact microstrip patch antenna is proposed for Wi- Fi and WiMAX bands. To achieve miniaturization the dimensions of the square radiating patch are chosen with reference to the high frequency band (3.3 GHz). The dual band is achieved by loading a Complementary Split Ring Resonator (CSRR) into the radiating patch. The left handed nature of the CSRR is the cause for low frequency band (2.4 GHz). To improve the return loss bandwidth and axial ratio bandwidth at upper band the fractal concept is introduced along the edges of the square patch. Thus a low volume dual band antenna is simulated using HFSS. A comparison with measured data is also presented. The fabricated antenna is found to be occupying 25% less volume (with reference to 2.4 GHz) than existing antennas which is mainly due to the blending of the two recent concepts ‘metamaterials and fractals’. Advanced Electromagnetics 2018-08-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/700 10.7716/aem.v7i3.700 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 40-45 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/700/362 Copyright (c) 2018 S. Nelaturi, N.V.S.N. Sarma

oai:ojs.aempublisher.org:article/702 2021-03-10T13:07:47Z AEM:ART driver

Characteristics UWB Planar Antenna with dual notched bands for WIMAX and WLAN Debab, M. Mahdjoub, Z. Ultra wideband (UMB); planar monopole; Band stop function, VSWR. In this article, a novel design of ultra wideband monopole antenna with dual notched bands performance is proposed. The size of the UWB antenna is minimized to 20 -17.6mm2 , printed on FR4 substrate 1.5 mm thickness and loss tangent tan Advanced Electromagnetics 2018-09-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/702 10.7716/aem.v7i5.702 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 20-25 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/702/364 Copyright (c) 2018 M. Debab, Z. Mahdjoub

oai:ojs.aempublisher.org:article/712 2021-03-10T13:09:30Z AEM:ART driver

Performance Analysis of Different Indoor Ultra Wide Band Channel Indicators Sorrentino, A. Mucchi, L. Cappa, S. Migliaccio, M. Ultra Wide Band kurtosis gamma-index standard error bootstrap error technique In this paper, performance of different indicators for the profiling of Ultra Wide Band (UWB) wireless propagation channel are analyzed. In particular, the γ-indicator and the kurtosis index k are compared in terms of the standard error. In order to improve the accuracy in the kurtosis case, results of the bootstrap error procedure are also accomplished. Further, an evaluation on the computational time needed for error estimation, is also provided. The comparison is made according to a real set of data derived from UWB measurement campaign accomplished within a modern laboratory/office building in which the two above mentioned indicators have been evaluated. Advanced Electromagnetics 2018-03-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/712 10.7716/aem.v7i2.712 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 13-18 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/712/344 Copyright (c) 2018 A. Sorrentino, L. Mucchi, S. Cappa, M. Migliaccio

oai:ojs.aempublisher.org:article/717 2021-03-10T13:09:09Z AEM:ART driver

A Novel Circular Slotted Microstrip-Fed Patch Antenna with three Triangle Shape Defected Ground Structure for Multiband Applications Jaiswal, A. Sarin, R. K. Raj, B. Sukhija, S. Defected ground structure (DGS), microstrip-fed, triband antenna and 5G applications. In this paper, a novel circular slotted rectangular patch antenna with three triangle shape Defected Ground Structure (DGS) has been proposed. Radiating patch is made by cutting circular slots of radius 3 mm from the three sides and center of the conventional rectangular patch structure and three triangle shape defects are presented on the ground layer. The size of the proposed antenna is 38 X 25 mm2. Optimization is performed and simulation results have been obtained using Empire XCcel 5.51 software. Thus, a miniaturized antenna is designed which has three impedance bandwidths of 0.957 GHz,  0.779 GHz, 0.665 GHz with resonant frequencies at 3.33 GHz, 6.97 GHz and 8.59 GHz and the corresponding return loss at the three resonant frequencies are -40 dB, -43 dB and -38.71 dB respectively. A prototype is also fabricated and tested. Fine agreement between the measured and simulated results has been obtained. It has been observed that introducing three triangle shape defects on the ground plane results in increased bandwidth, less return loss, good radiation pattern and better impedance matching over the required operating bands which can be used for wireless applications and future 5G applications. Advanced Electromagnetics 2018-08-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/717 10.7716/aem.v7i3.717 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 56-63 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/717/365 Copyright (c) 2018 A. Jaiswal, R. K. Sarin, B. Raj, S. Sukhija

oai:ojs.aempublisher.org:article/719 2021-03-10T13:09:01Z AEM:ART driver

Analytical Solutions of Eddy-Current Problems in a Finite Length Cylinder Zhilichev, Y. Cylindrical conductors magnetic fields eddy currents analytical methods separation of variables Bessel functions vector magnetic potential scalar electric potential power loss magnetic moment Magnetic field and eddy currents in a cylinder of finite length are calculated by separation of variables. The magnetic field outside the cylinder or inside the bore of the hollow cylinder and shell is expressed in terms of Bessel functions. Both axial and transverse applied fields are considered for the solid and hollow cylinders. The equations for the vector potential components are transformed in one-dimensional equations along the radial coordinate with the consequent integration   by the method of variation of parameters. The equation for the scalar electric potential when required is also integrated analytically. Expressions for the magnetic moment and loss are derived. An alternative analytical solution in terms of scalar magnetic potential is derived for the finite length thin shells. All formulas are validated by the comparison with the solutions by finite–element and finite-difference methods. Advanced Electromagnetics 2018-08-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/719 10.7716/aem.v7i4.719 Advanced Electromagnetics; Vol. 7 No. 4 (2018); 1-11 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/719/375 Copyright (c) 2018 Y. Zhilichev

oai:ojs.aempublisher.org:article/720 2021-03-10T13:09:10Z AEM:ART driver

Numerical treatment of floating conductors based on the traditional finite element formulation Rincon, D. J. Aguilera, E. Chacón, J. C. Capacitance Computation, Finite Element Analysis, Floating Conductor, Low frequency EMC. A method to model a conductor with undefined potential (commonly known as floating conductor), is sometimes required in the electric field analysis. This paper presentsand compares the main methods to deal with such issue, based on the traditional finite element formulation. The purpose is to guide the reader in the selection of a method under the following criteria: Accuracy, implementation and simplicity. The accuracy of each method was evaluated against the analytic solution of the capacitance matrix for a system of parallel cylindrical conductors. Based on the results of the simulations, the characteristics of the methods and this paper’s criteria, a qualification of each method performance is done. Additionally, particular cases in which a specific method could be the most suitable option to deal with floating conductors, are analyzed. In general, the Virtual Permittivity method exhibits the best performance. However, it is shown that the method’s accuracy is influenced by the rounding errors. This paper proposes an additional consideration on the method formulation in order to verify the accuracy of the results. Advanced Electromagnetics 2018-08-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/720 10.7716/aem.v7i3.720 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 46-55 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/720/363 Copyright (c) 2018 D. J. Rincon, E. Aguilera, J. C. Chacón

oai:ojs.aempublisher.org:article/721 2021-03-10T13:06:37Z AEM:ART driver

Numerical Method for Electromagnetic Wave Propagation Problem in a Cylindrical Anisotropic Waveguide with Longitudinal Magnetization Smolkin, E. Snegur, M. Maxwell's equations anisotropic waveguide boundary value problem projection method The propagation of monochromatic electromagnetic waves in metal circular cylindrical dielectric waveguide with longitudinal magnetization filled with anisotropic inhomogeneous waveguide is considered. The physical problem is reduced to solving a transmission eigenvalue problem for a system of ordinary differential equations. Spectral parameters of the problem are propagation constants of the waveguide. Numerical results are obtained using a modification of the projecting methods. The comparison with known exact solutions (for particular values of parameters) are made. Advanced Electromagnetics 2019-12-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/721 10.7716/aem.v8i4.721 Advanced Electromagnetics; Vol. 8 No. 4 (2019); 130-135 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/721/477 Copyright (c) 2019 E. Smolkin, M. Snegur

oai:ojs.aempublisher.org:article/723 2021-03-10T13:09:09Z AEM:ART driver

UHF RFID Tag Based on Modified Dihedral Corner for Enhanced Read Range and Broadband Operation Fijo, J. K. Aju, J. K. Mathew, T. RFID UHF Band Tag antenna Dihedral corner This paper presents the design and development of a novel UHF RFID tag which exhibits enhanced read range over the entire UHF RFID band of 860-930MHz. This novel UHF RFID tag consists of an antenna based on modified dihedral corner with an embedded double T-match and a Murata LXMS 31ACNA010 chip attached to the terminals of the antenna. Measured read range variations over the azimuth and elevation angular ranges show enhanced read range over wide angular ranges as compared to conventional RFID tags. Advanced Electromagnetics 2018-08-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/723 10.7716/aem.v7i3.723 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 64-68 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/723/366 Copyright (c) 2018 J. K. Fijo, J. K. Aju, T. Mathew

oai:ojs.aempublisher.org:article/724 2021-03-10T13:09:29Z AEM:ART driver

Reconfigurable Multi-Beam Dual-Band Antenna based on Vee Dipoles Snehalatha, L. Pathak, N. P. Manhas, S. K. Multi-beam Dual-band Reconfigurable antenna planar antenna electronically This paper presents a novel antenna configuration to support reconfigurable multi-beam feature with dual-band capability. The proposed design uses four double Vee dipoles with their arms printed on either sides of a substrate and fed through a single coaxial input probe. A single directional beam that can be configured in four directions at quadrature angle in the azimuth (xy-plane) and corresponding dual, triple and quad beams have been obtained by controlling the state of four PIN diodes. A prototype of the proposed antenna has been designed and fabricated. Measured antenna parameters are in good agreement with that of simulated parameters. This highly planar antenna shows similar radiation patterns at both design frequencies enabling concurrent dual-band communication for all fifteen possible beam configurations. Advanced Electromagnetics 2018-03-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/724 10.7716/aem.v7i2.724 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 19-24 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/724/345 Copyright (c) 2018 L. Snehalatha

oai:ojs.aempublisher.org:article/725 2021-03-10T13:08:59Z AEM:ART driver

Design of Compact Dual-band Fractal Monopole Antenna with Virtually Extended Ground Plane Yassen, M. T. Hammas, H. A. Hussan, M. R. Salim, A. J. Ali, J. K. Dual-band antenna; Compact monopole antenna Fractal geometry Extended ground plane Achieving a particular response to serve multiple wireless applications is regarded as the primary demand in our modern age because of the considerable development of the communication devices. In this paper, a compact monopole antenna with reduced ground plane has been suggested to meet the requirements of the dual-band WLAN applications. The antenna miniaturization has been carried out in employing two techniques. Initially, the fractal geometry has been applied to the antenna radiating element. Two-sided Koch fractal curves up to the third iteration have been used to increase the path of electrical current on the surface of the radiating element which is in the form of a square with dimensions. To gain more miniaturization, the antenna ground plane has been further reduced by using different lengths of two open-ended parallel stubs to form a virtually extended ground plane. This supportive technique has been adopted as a tuning means to control the path of the electrical currents exciting the resulting resonances. The proposed antenna and has been printed on an FR-4 substrate with a thickness of 1.6 mm and 4.4 relative dielectric constant and is fed by 50-ohm microstrip feed line. The resulting antenna dimensions are of about 19.1 mm × 19.1 mm. A parametric study has been carried out, and the results reveal that the proposed antenna offers a dual-band performance with a considerable ratio of resonant frequencies covering the existing 2.4/5.2/5.8 GHz WLAN applications, besides many other communication services. Advanced Electromagnetics 2018-08-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/725 10.7716/aem.v7i4.725 Advanced Electromagnetics; Vol. 7 No. 4 (2018); 19-26 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/725/377 Copyright (c) 2018 M. T. Yassen, H. A. Hammas, M. R. Hussan, M.Sc, A. J. Salim, J. K. Ali

oai:ojs.aempublisher.org:article/726 2021-03-10T13:07:37Z AEM:ART driver

Design of Circularly Polarized Modified Minkowski Fractal Based Antenna for UHF RFID Reader Applications Pandey, S. Pandey, G. P. Sarum, P. M. Axial-ratio bandwidth Circular polarization Minkowski fractal RFID reader Microstrip antenna A compact, square shaped microstrip fractal antenna with asymmetrical pairs of T-slits for circularly polarized (CP) radiation and radio frequency identification (RFID) reader applications is proposed and experimentally investigated. Design is based on narrow slit modified Minkowski island fractal geometry. Circular polarization along with size reduction is achieved by inserting four symmetrical pairs of T-slits at the square patch boundary of the single-probe-feed radiator. Proposed geometry is tuned at resonant frequency of 914 MHz by optimization of dimensions of the two T-slits. Compactness of the antenna is achieved by increasing the overall sizes of the slits. Antenna is fabricated on FR4 substrate with a size of 47.2×47.2×1.6 mm3 (0.143λ0 X 0.143λ0 X 0.005λ0) and tested to validate the simulated results. The 3-dB axial-ratio (AR) bandwidth and impedance bandwidth of the proposed antenna design are found to be 7 MHz (911-918 MHz) and 24 MHz (909-933 MHz) respectively. A design equation is develped based on the parametric study that can be used to design a compact antenna with CP for UHF RFID applications covering the frequency range from 887 to 1023 MHz. Advanced Electromagnetics 2018-11-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/726 10.7716/aem.v7i5.726 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 94-100 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/726/401 Copyright (c) 2018 S. Pandey, G. P. Pandey, P. M. Sarum

oai:ojs.aempublisher.org:article/730 2021-03-10T13:07:09Z AEM:ART driver

Mutual Coupling Reduction of DRA for MIMO Applications Al Shalaby, N. El-Sherbiny, S. G. MIMO, SDRAs, CNTs, FEM, FIT. In this paper, A multiple input Multiple Output (MIMO) antenna using two Square Dielectric Resonators (SDRs) is introduced. The mutual coupling between the two SDRAs is reduced using two different methods; the first method is based on splitting a spiral slot in the ground plane, then filling the slot with dielectric material, "E.=2.2". The second method is based on inserting a copper parasitic element, having the same shape of the splitted Spiral, between the two SDRAs.  The effect of replacing the copper parasitic element with Carbon nanotubes (CNTs) parasitic element "SOC12 doped long-MWCNT BP" is also studied. The antenna system is designed to operate at 6 GHz. The analysis and simulations are carried out using finite element method (FEM). The defected ground plane method gives a maximum isolation of l8dB at element spacing of 30mm (0.6λo), whereas the parasitic element method gives a maximum isolation of 42.5dB at the same element spacing. Advanced Electromagnetics 2019-05-18 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/730 10.7716/aem.v8i1.730 Advanced Electromagnetics; Vol. 8 No. 1 (2019); 75-81 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/730/434 Copyright (c) 2019 N. Al Shalaby, S. G. El-Sherbiny

oai:ojs.aempublisher.org:article/734 2021-03-10T13:07:43Z AEM:ART driver

Iterative Scattering by Two PEMC Elliptic Cylinders Hamid, A.-K. PEMC eliptic cylinders analytic solution addition theorem iterative proceducres Mathuie functions Iterative procedure is implemented to derive rigorous solution to the problem of plane electromagnetic wave scattering by couple of perfect electromagnetic conducting (PEMC) elliptic cylinders due co and cross polarized scattered fields among cylinders. The translation addition theorem for Mathieu functions is enforced to compute the higher order scattered fields by single PEMC elliptic cylinder in terms of the other elliptic cylinder coordination system to impose the boundary conditions. The kth co and cross polarized scattered field coefficient expressions are extracted by iteration procedure without using matrix inversion. Advanced Electromagnetics 2018-09-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/734 10.7716/aem.v7i5.734 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 49-52 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/734/395 Copyright (c) 2018 A.-K. Hamid

oai:ojs.aempublisher.org:article/735 2021-03-10T13:09:16Z AEM:ART driver

Statistical Moments and Scintillation Level of Scattered Electromagnetic Waves in the Magnetized plasma Jandieri, G. V. Ishimaru, A. Rawat, B. Gavrilenko, V. Kharshiladze, O. Ionosphere statistical characteristics turbulence scintillation level Statistical characteristics of scattered ordinary and extraordinary electromagnetic waves in the magnetized plasma are considered using the smooth perturbation method. Diffraction effects and polarization coefficients are taken into account. Second order statistical moments of scattered radiation are obtained for arbitrary correlation function of electron density fluctuations. Broadening of the spatial power spectrum and displacement of its maximum, wave phase structure function and the angle-of-arrivals are obtained for three-dimensional spectral function containing anisotropic Gaussian and power-law spectral functions. Scintillation level of scattered radiation is analyzed for different parameters characterizing anisotropic plasma irregularities for the ionospheric F-region. The spectral widths (first and second moments) of the power spectrum and scintillation periods are calculated for “frozen-in” drifting elongated plasma irregularities using the experimental data. Advanced Electromagnetics 2018-08-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/735 10.7716/aem.v7i3.735 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 1-10 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/735/357 Copyright (c) 2018 George Vakhtang Jandieri

oai:ojs.aempublisher.org:article/737 2021-03-10T13:08:58Z AEM:ART driver

Survey on Electrical Activity in Earth’s Atmosphere Paras, M. K. Rani, P. Lightning Discharge Sprites Blue Jets Gigantic Jets Halos Elves Lightning discharge is a spectacular, luminous and one of the most dangerous short lived phenomenon which occurs in the Earth’s atmosphere ranging from troposphere to the lower ionosphere. Lightning in troposphere is mainly classified as cloud-to-ground (CG) lightning, intra-cloud lightning and inter-cloud lightning discharges. It is assumed that these discharges are caused by the electrically charged thunderclouds. CG lightning has been studied more and is further categorized as positive CG and negative CG lightning. Positive CG lightning is more powerful and accounts only (5-10) percent of the total global lightning and may carry a peak current of >300 kA. An entire family of other electrical discharges also has been reported by the scientific community. They are called “Transient’s Luminous Events (TLE’s)”. TLEs occur from top of the thunderclouds up to the lower ionospheric altitudes. Their first visual evidence was documented in 1989. TLE’s are included as blue starters, blue jets, gigantic jets, red sprites, halos, and elves. They are named according to their optical properties, terminal altitudes and different shapes. It has been observed that TLE’s are associated with underlying thunderstorm activity and strong CG lightning. The exact physical mechanism of lightning and TLE’s and their association with the underlying thunderstorms is still unknown and the research is going on. In this paper, we will study the possible mechanisms of these electrical discharges, their inter-connection and impacts on the atmosphere. This papers is aimed at the readers generally are unfamiliar with the lightning characteristics. We hope that this article will increase the interest among the researchers. Advanced Electromagnetics 2018-08-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/737 10.7716/aem.v7i4.737 Advanced Electromagnetics; Vol. 7 No. 4 (2018); 34-45 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/737/379 Copyright (c) 2018 Manoj Kumar Paras, Pooja Rani

oai:ojs.aempublisher.org:article/742 2021-03-10T13:07:05Z AEM:ART driver

Above-light-line Nonlinear Surface Polaritons near a Conductive Interface: Threshold Case Groza, A. D. nonlinear surface polaritons; zero-refractive index materials; surface conductivity; magnetooptical metamaterials; saturable permittivity We investigate the TM-polarized nonlinear surface polaritons (NLSP) propagating along aguided structure consisting of a magnetic optically linear medium and a non-magnetic opticallynonlinear medium with saturable permittivity separated by a flat conductive layer of zerothickness. We consider those values of hosting media bulk material parameters for which theNLSP existence (for zero sheet conductance) has threshold character with respect to the wavesintensity. Based on the exact solution of Maxwell's equations we show that the energy andpropagation properties of the NLSP near the above-light-line condition (1 > n > 0) dependconsiderably on the surface conductivity of the layer, even the threshold character of the NLSPcan be lost; for certain sheet conductance values these waves can exist in a linear limit. TheNLSP propagation constant is defined by both the surface conductivity and field intensity andcan be varied in a wide diapason, which gives an opportunity to obtain and control the importantfor quantum information processing 0 n  condition. For a chosen value of the NLSPpropagation constant the NLSP field intensity and energy flux decries when the surfaceconductivity grows; saturation of the nonlinear permittivity leads to an increase of the NLSPenergy flux compared with Kerr-like nonlinearity. Advanced Electromagnetics 2019-06-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/742 10.7716/aem.v8i1.742 Advanced Electromagnetics; Vol. 8 No. 1 (2019); 91-98 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/742/442 Copyright (c) 2019 A. D. Groza

oai:ojs.aempublisher.org:article/743 2021-03-10T13:08:57Z AEM:REV driver

Review on the Design of the Isolation Techniques for UWB-MIMO Antennas Gnanaharan, I. Anbazhagan, R. UWB MIMO Isolation Metamaterial Ultra wide band - Multiple Input Multiple Output antenna technology provides higher data rates and the combination of the ultra wide band (UWB) and the multiple input multiple output (MIMO) technologies provides a solution for the demand of still higher data rates i.e. in excess of 3 Gb/sec in the future.  As the antenna technologies are improving, the size of the MIMO antenna is growing smaller and smaller. Placing the antenna elements in such close proximity increases the coupling between them. Various isolation techniques have to be introduced between the antenna elements to decrease the coupling and to improve the isolation. A study of the various isolation enhancement techniques have been made in this review. It analyses the various isolation enhancement methods such as using orthogonal polarization, parasitic elements, varied decoupling structures, defected ground structures (DGS), neutralization line (NL) and finally by using metamaterials. Metamaterials is a technology to perk up the isolation between the antenna elements. Split ring resonator (SRR) behaves as a metamaterial and it is used as an isolation mechanism in this study. The antennas are simulated and the results are compared. The method using parasitic elements gives the highest isolation of 35 dB and it is 5 dB better than the methods using orthogonal polarization and using the decoupling structure. The performance of all the antennas satisfies the conditions for minimum isolation. The envelope correlation coefficient is nearly zero in all the antennas and it implies good diversity performance. The diversity gain is also calculated for the various antennas and it satisfies good diversity performance. The bandwidth of the antennas is in the UWB frequency range and they have a fractional bandwidth above the required value of 1.09. The capacity loss for all the antennas is very low and the antennas using defected ground structure and the decoupling structure gives very low capacity loss. Advanced Electromagnetics 2018-08-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Review Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/743 10.7716/aem.v7i4.743 Advanced Electromagnetics; Vol. 7 No. 4 (2018); 46-70 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/743/380 Copyright (c) 2018 I. Gnanaharan, R. Anbazhagan

oai:ojs.aempublisher.org:article/747 2021-03-10T13:09:08Z AEM:ART driver

Gain Enhancement of Monopole Antenna using AMC Surface Mouhouche, F. Azrar, A. Dehmas, M. Djafer, K. AMC dual band A CPW rectangular-ring antenna over an Artificial Magnetic Conductor (AMC) is presented in this work. The AMC is a designed as a dual-band structure having an array of unit cells and operates at 2.45GHz and 5.20 GHz. A CPW antenna uses this dual-band AMC structures as a back-plane. Performance comparison is carried out with and without incorporation of AMC. The simulated and measured results show that the combination of the AMC reflector and the antenna provide directional properties at both frequency bands. It has been found that the antenna gain increases by about 5 dB. Advanced Electromagnetics 2018-08-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/747 10.7716/aem.v7i3.747 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 69-74 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/747/367 Copyright (c) 2018 F. Mouhouche, A. Azrar, M. Dehmas, K. Djafer

oai:ojs.aempublisher.org:article/751 2021-03-10T13:07:41Z AEM:REV driver

Review on Design of Frequency Selective Surfaces based on Substrate Integrated Waveguide Technology Varikuntla, K. K. Singarav, R. Dual band FSS equivalent circuit frequency selective surfaces substrate integrated waveguide loaded FSS lumped element microwave propagation quarter mode SIW polarization rotator The spectacular development of frequency selective surfaces (FSS) as a spatial filter, absorbers and reflectors made them feasible for the aerospace and defence applications. The intervention of substrate integrated waveguide (SIW) technology into FSS results in the improvement of unit cell structures and better performance by isolating them from inter-element interference. Such FSS structures with SIW cavities upholds the FSS properties and improves their selectivity and performance. Considering the diversity in applications of introducing SIW cavity technology into FSS, the aim of this paper is to furnish a study on the glimpse of EM design techniques to analyze this type of structures. Design topologies of narrowing bandwidth, dual resonance, the design of FSS with sharp sideband edges and frequency selective polarization rotating structures are presented. Further, a novel design for improving the bandwidth of reflective FSS is discussed based on SIW technology. Fabrication techniques pertaining to this type of structures are presented in brief. Advanced Electromagnetics 2018-11-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Review Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/751 10.7716/aem.v7i5.751 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 101-110 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/751/406 Copyright (c) 2018 K. K. Varikuntla, R. Singarav

oai:ojs.aempublisher.org:article/755 2019-09-12T06:09:47Z AEM:ART driver

A Novel Dual Band Hexagonal Antenna for Bluetooth and Uwb Applications With Single Band Notched Elhabchi, M. Srifi, M. N. Touahni, R. Hexagonal Antenna band-notched Bluetooth WLAN Ultrawideband UMB This paper  presents a  regular hexagonal antenna for ultra wide bandwidth (UWB). Then this antenna is modified to obtain  a dual band with single band notched.The Bluetooth band is integrated in ultrawideband (UWB)  when   the antenna  is loaded by  pair of  inverted Advanced Electromagnetics 2018-11-18 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/755 10.7716/aem.v7i5.755 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 63-68 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/755/397 Copyright (c) 2018 M. Elhabchi, M. Nabil Srifi, R. Touahni

oai:ojs.aempublisher.org:article/761 2021-03-10T13:08:56Z AEM:ART driver

Performance Evaluation of Wide-Angle Ultrathin Microwave Metamaterial Absorber with Polarization Independence Kaur, K. P. Upadhyaya, T. concentric closed ring resonator metamaterial absorber wide-angle ultrathin polarization-independence waveguide measurement method A novel dual-band wide-angle ultra-thin absorber composed of dual closed-concentric ten-point stars with polarization independence is presented in this article. The ten-point stars formed resonators are engraved on low cost FR4 substrate. The EM absorber performance is studied in terms of electrical and physical parameters. The polarization independence is practically demonstrated using waveguide measurement method. The measured results are in good agreement with simulated results. The absorbance values of 99.37% and 97.18% are achieved at 2.13 GHz and 2.52 GHz, respectively. The presented absorber design is wide-angle RF absorber with high absorbance values of about 80% up to 60° under TE mode and 87% up to 75° of oblique incidence angle for TM mode excitations. The experimental results demonstrate the absorption effectiveness of the proposed design to be utilized in RF energy harvester modules for capturing ambient UMTS band signals and in RF absorber applications for S band radar systems. The presented absorber unit cell is ultrathin and compact with the thickness and size less than λ/56 mm and λ/5 mm, respectively, at lowest absorption frequency. Advanced Electromagnetics 2018-08-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/761 10.7716/aem.v7i4.761 Advanced Electromagnetics; Vol. 7 No. 4 (2018); 71-77 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/761/381 Copyright (c) 2018 K. P. Kaur, T. Upadhyaya

oai:ojs.aempublisher.org:article/764 2021-03-10T13:06:52Z AEM:ART driver

High Gain Circularly Polarized Pentagonal Microstrip for Massive MIMO Base Station Bhadade, R. S. Mahajan, S. P. Microstrip Antenna, Massive MIMO, Input impedance, Return loss. In this paper we propose a circularly polarized pentagonal microstrip antenna on a suspended substrate with coaxial probe feed and five loaded slits for Massive MIMO BS Antenna applications. Massive Multiple-Input Multiple-Output (MIMO) is one of the key component to be incorporated in the 5G cellular systems. The proposed antenna is successfully simulated using HFSS 13.0, fabricated on a FR-4 substrate and measured. The proposed antenna exhibits a much higher gain of 6.17dB, improved impedance bandwidth of 171.9 MHz (Return loss, S11= -10dB) , axial ratio bandwidth (< 3dB) of 135 MHz , patch area of 1775 mm2  , and also yields return loss better than -15 dB around the center frequency of 2.45 GHz (ISM Band). Measured characteristics of the antenna are in good agreement with the simulated results. Advanced Electromagnetics 2019-09-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/764 10.7716/aem.v8i3.764 Advanced Electromagnetics; Vol. 8 No. 3 (2019); 83-91 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/764/455 Copyright (c) 2019 R. S. Bhadade, S. P. Mahajan

oai:ojs.aempublisher.org:article/765 2021-03-10T13:09:07Z AEM:ART driver

A Dual-Band Printed Slot Antenna for WiMAX and Metrological Wireless Applications Mezaal, Y. S. Abdulkareem, S. F. Ali, J. K. Compact Microstrip Antenna; Quasi-Fractal Geometry; Dualband Antenna; CST Design and Simulation. New microstrip antenna initiated from the portions of  1st order structures of Sierpinski square geometry is  modeled  in this paper as quasi-fractal device using an FR4 substrate of 4.4 dielectric constant, 1.6 mm thickness and 0.02 loss tangent. The intended microstrip antenna is designed for band frequencies  of 3.5 and 7.8 GHz for WiMAX and metrological satellite applications with a bandwidth of 0.66 and 0.78 GHz for each band respectively. The designed antenna has considerable compact size  that is smaller than many reported fractal and non-fractal antenna structures in the literature. Also, it has interesting return loss and radiation results that can be employed in diverse wireless devices. Measured input reflection coefficient, radiation patterns and gain results have been found in good agreement with those predicted by simulations. Advanced Electromagnetics 2018-08-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/765 10.7716/aem.v7i3.765 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 75-81 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/765/368 Copyright (c) 2018 Y. S. Mezaal

oai:ojs.aempublisher.org:article/766 2021-03-10T13:09:06Z AEM:ART driver

Design of a Compact Dual-Band Microstrip Antenna Enabled by Complementary Split Ring Resonators for X-Band Applications Hamad, E. K. I. Hamdalla, M. Z. M. Dual band antennas SRR Metamaterials In this paper, a design of highly effective dual-band microstrip antenna for X-band applications is developed. Dual-band response is obtained by etching four rectangular split ring resonator (RSRR) unit cells within the radiating element of a conventional patch initially designed to operate at 10 GHz. The proposed antenna is constructed on low lossy RT/duroid 5880 (ϵr = 2.2, tan δ = 0.0009) substrate of 20x20x1.575 mm3 total area. The antenna is tuned to operate at two resonant frequencies within 8 to 12 GHz depending on the geometric specifications of the RSRR's. A parametric study of different numbers of unit cells etched on the radiating element is investigated and discussed comprehensively through this study. Realized gain of about 6.2 and 6.8 dB at 8.8 and 10 GHz are attained. Consistent results are obtained between the measurements and simulation results using 3D full-wave FEM-base simulator. Advanced Electromagnetics 2018-08-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/766 10.7716/aem.v7i3.766 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 82-86 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/766/369 Copyright (c) 2018 E. K. I. Hamad, M. Z. M. Hamdalla

oai:ojs.aempublisher.org:article/769 2021-03-10T13:09:05Z AEM:ART driver

A CPW - Fed Octagonal Ring Shaped Wide Band Antenna for Wireless Applications Khanna, P. Sharma, A. Singh, A. K. Kumar, A. Octagonal Ring Shape Wideband Antenna CPW-FED A CPW – Fed octagonal ring shaped antenna for wideband operation is presented. The radiating patch of proposed octagonal ring antenna consists of symmetrical slot in place of conventional annular ring microstrip antenna. The ground plane consists of two rectangular slots, while the radiator and the ground plane are on same plane that utilizes the space available around the radiator. The proposed antenna is simulated through Ansoft’s High Frequency Structure Simulator (HFSS). Measured result shows balanced agreement with the simulated results. The prototype is taken with dimensions 47 mm × 47 mm × 1.6 mm that achieves good return loss, constant group delay and good radiation patterns over the entire operating bandwidth of 2.0 to 9.5 GHz (7.5 GHz). The proposed antenna achieves high impedance bandwidth of 130%. Thus, the proposed antenna is applicable for S and C band applications. Advanced Electromagnetics 2018-08-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/769 10.7716/aem.v7i3.769 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 87-92 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/769/370 Copyright (c) 2018 P. Khanna, A. Sharma, A. K. Singh, A. Kumar

oai:ojs.aempublisher.org:article/770 2021-03-10T13:07:51Z AEM:ART driver

A Novel LS/LMMSE Based PSO Approach for 3D-Channel Estimation in Rayleigh Fading Bhange, D. N. Dethe, C. MIMO OFDM 3D-PACE LMMSE PSO signal to noise ratio bit error rate A high transmission rate can be obtained using Multi Input Multi Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) model. The most commonly used 3D-pilot aided channel estimation (PACE) techniques are Least Square (LS) and Least Minimum Mean Square (LMMSE) error. Both of the methods suffer from high mean square error and computational complexity. The LS is quite simple and LMMSE being superior in performance to LS providing low Bit Error Rate (BER) at high Signal to Noise ratio (SNR). Artificial Intelligence when combined with these two methods produces remarkable results by reducing the error between transmission and reception of data signal. The essence of LS and LMMSE is used priory to estimate the channel parameters. The bit error so obtained is compared and the least bit error value is fine-tuned using particle swarm optimization (PSO) to obtained better channel parameters and improved BER. The channel parameter corresponding to the low value of bit error rate obtained from LS/LMMSE is also used for particle initialization. Thus, the particles advance from the obtained channel parameters and are processed to find a better solution against the lowest bit error value obtained by LS/LMMSE. If the particles fail to do so, then the bit error value obtained by LS/LMMSE is finally considered. It has emerged from the simulated results that the performance of the proposed system is better than the LS/LMMSE estimations. The performance of OFDM systems using proposed technique can be observed from the imitation and relative results. Advanced Electromagnetics 2018-09-04 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/770 10.7716/aem.v7i4.770 Advanced Electromagnetics; Vol. 7 No. 4 (2018); 117-123 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/770/387 Copyright (c) 2018 D. N. Bhange, C. Dethe

oai:ojs.aempublisher.org:article/771 2021-03-10T13:07:15Z AEM:ART driver

Modeling a Planar Coupled Microstrip Lines using various Wavelets and Method of Moments Bayjja, M. Moubadir, M. Alsharahi, G. Aghoutane, M. Amar Touhami, N. Coupled Microstrip Lines, Methods of moments, Wavelets, Sparse matrix, and CPU Time. In this paper, we apply a several wavelets basis functions to the method of moments to modeling the parallel-coupled microstrip lines. The first set of equations is for the shielded microstrip line solved with moment’s method and wavelets. The Green’s function is obtained from the theory of images. The second set are for the parallel-coupled microstrip lines operating in the TEM mode or when the analysis can be based on quasi-static approximation, the properties of coupled lines can be determined from the self- and mutual inductances and capacitances for the lines. To demonstrate the effectiveness and accuracy of the proposed technique, numerical results of even- and odd-mode characteristic impedances, coupling coefficient, percentage sparsity achieved in the impedance matrix, the CPU Time to reverse impedance matrix, and error relative for Daubechies, Coiflets,   Biorthogonal and Symlets wavelets are presented. Numerical results are in good agreement with those in previous publications. Advanced Electromagnetics 2019-03-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/771 10.7716/aem.v8i1.771 Advanced Electromagnetics; Vol. 8 No. 1 (2019); 51-58 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/771/430 Copyright (c) 2019 M. Bayjja

oai:ojs.aempublisher.org:article/772 2021-03-10T13:07:36Z AEM:ART driver

An Insight into Impact of Partial Ground and Dual Trapezoidal Slots on Bandwidth and Gain considerations for a Microstrip Antenna Array for WiMax Application Raviteja, G. V. microstrip antenna rectangular patch WiMax applications partial ground trapezoidal slot In this work, design and analysis of microstrip patch antenna is carried out. A (2 X 1) antenna array is considered, with dimensions (W x L) as 35.11 mm x 27.13 mm. The dielectric substrate is taken to be FR4 epoxy with dielectric constant as 4.3 and loss tangent of 0.02. Dual trapezoidal slots are introduced to improve the gain considerations for the considered antenna array. The simulations are carried out and it is observed that the gain is improved. As a second stage in the work, to improve the bandwidth of operation for the dual trapezoidal antenna array, the concept of partial ground is taken into consideration. The simulations are carried in HFSS. It is found out that the introduction of partial ground improved the bandwidth of the antenna structure considered while preserving the gain to the maximum extent possible. The gain was found to be 7.0875 dB with centre frequency 2.4020 GHz. The frequency range below -10dB for the considered antenna array structure with partial ground was around 2.3 GHz to 2.6 GHz. This range is utilized in the WiMax application which covers the frequency ranges (2.3 GHz to 2.4 GHz) and (2.496 GHz to 2.690 GHz). Advanced Electromagnetics 2018-12-13 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/772 10.7716/aem.v7i5.772 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 111-117 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/772/403 Copyright (c) 2018 G. V. Raviteja

oai:ojs.aempublisher.org:article/774 2021-03-10T13:07:40Z AEM:ART driver

A Triband Planar Inverted-F Antenna with Quadratic Koch Fractal Shaped Slit Along with a Shorted Parasitic Strip Kumar, D. Chowdhury, D. Ghatak, R. PIFA antenna Koch Fractal In this paper, a novel compact tri-band planar inverted-F antenna (PIFA) for mobile communication application is proposed. The antenna is capable to cover GSM 900 MHz, DCS 1.8 GHz and WLAN (IEEE 802.11b) 2.45 GHz bands. The proposed PIFA is composed of a quadratic Koch shape slit and a parasitic strip. The PIFA with the fractal shaped slit contributes to the first and second resonance while the shorted strip brings forth the third band. The impedance bandwidths of 84 MHz, 132 MHz and 81 MHz for GSM 900, DCS 1800 and WLAN (IEEE 802.11b) 2450, respectively are achieved. A realized gain of 2.44 dBi, 4.48 dBi and 3.86 dBi is obtained at 0.9 GHz, 1.8 GHz and 2.45 GHz, respectively. The proposed antenna is fabricated and |S11| dB is measured. Reasonable agreement between simulated results as well as measured results is obtained. Advanced Electromagnetics 2018-11-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/774 10.7716/aem.v7i5.774 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 69-73 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/774/391 Copyright (c) 2018 D. Kumar, D. Chowdhury, R. Ghatak

oai:ojs.aempublisher.org:article/780 2021-03-10T13:07:46Z AEM:ART driver

Broadband Koch Fractal Boundary Printed Slot Antenna for ISM Band Applications Reddy, V. V. Fractal antenna Broadband Slot antenna A new broadband radiating slot antenna with fractal shape is modeled, fabricated and experimentally studied. The presented slot antenna is examined for first three iterations. Optimization of iteration factor (IF) and iteration angle (IA) have been done for each iteration order (IO) to enhance impedance bandwidth significantly. All the antennas are fed with a simple microstrip line. Bandwidth achieved with Antenna 1 (IO=1, IF=0.35 and IA=600) is 1550 MHz which is five times more than that of the square slot antenna. The performance of the proposed fractal slots is also compared with the rotated slot antenna.  The experimental data validates the reported analysis with a close agreement. Advanced Electromagnetics 2018-09-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/780 10.7716/aem.v7i5.780 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 31-36 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/780/393 Copyright (c) 2018 V. V. Reddy, N. V. S. N. Sarma

oai:ojs.aempublisher.org:article/783 2021-03-10T13:09:04Z AEM:ART driver

A High Gain Microstrip Patch Array for 5 GHz WLAN Applications Ngobese, B. W. Kumar, P. array reflection coefficient high gain 5 GHz WLAN This paper presents the design, fabrication and measurement of a high gain 4-elements linear patch array, which uses the corporate feed technique with inset for excitation resonating at 5.216 Advanced Electromagnetics 2018-08-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/783 10.7716/aem.v7i3.783 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 93-98 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/783/371 Copyright (c) 2018 B. W. Ngobese, P. Kumar

oai:ojs.aempublisher.org:article/791 2021-03-10T13:07:39Z AEM:ART driver

A Multiband Slot Antenna loaded with Stubs for WLAN/WiMAX/Satellite TV Applications Khan, I. Ali, T. Devanagavi, G. D. K R, S. Biradar, R. C compact stubs radiator slot A compact planar multiband antenna operating at 2.65 (lower WiMAX)/5.20 (WLAN)/6.75/7.30 GHz (Satellite TV) is presented. The antenna consists of circular radiator in which a rectangular slot is etched out. Also, the circular radiator is loaded with a rectangular and two hook-shaped stubs to achieve multiband operations. The impedance matching at these bands is achieved by using two small square stubs placed inside the hook-shaped stubs. The antenna has an electrical dimension of 0.17λl x 0.17λl x 0.01λl at the lower frequency of 2.65 GHz. The antenna has S11<-10dB bandwidth of 3% (2.6-2.68GHz), 2.3% (5.12-5.24GHz), 1.2% (6.68-6.76GHz) and 1.37% (7.26-7.36GHz) in simulation and about 6.25% (2.48-2.64GHz), 2.24% (5.3-5.42GHz), 1.15% (6.92-7.00GHz) and 1.1% (8.04-8.12GHz) under measurement. The entire simulation analysis of the antenna is carried out using HFSS v.13.0. Advanced Electromagnetics 2018-11-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/791 10.7716/aem.v7i5.791 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 74-81 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/791/398 Copyright (c) 2018 I. Khan, T. Ali, G. D. Devanagavi, S. K R, R. C Biradar

oai:ojs.aempublisher.org:article/792 2021-03-10T13:09:18Z AEM:ART driver

Symmetric surface waves along a metamaterial dielectric waveguide and a perfectly conducting cylinder covered by a metamaterial layer Shestopalov, Y. Kuzmina, E. metamaterial lineGoubau waveguide surfacewave Existence of symmetric complex waves in a metamaterial dielectric rod and a perfectly conducting cylinder of circular cross section covered by a concentric layer of metamaterial, a metamaterial Goubau line, is proved. Analytical investigation and numerical solution of dispersion equations reveal several important properties of running waves inherent to open metal-metamaterial waveguides which have not been reported for waveguides filled with standard media. Advanced Electromagnetics 2018-05-23 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/792 10.7716/aem.v7i2.792 Advanced Electromagnetics; Vol. 7 No. 2 (2018); 91-98 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/792/356 Copyright (c) 2018 Y. Shestopalov, E. Kuzmina

oai:ojs.aempublisher.org:article/796 2021-03-10T13:07:45Z AEM:ART driver

A New Approach to the Analysis of Electromagnetic FEM Simulations Results at Electric Field Singularities Betti Beneventi, G. DalRe, M. Vincetti, L. Field_Singularity Electromagnetic_Simulations Electric_Field_Analysis Electrical_Stress_grading FEM_simulations A new methodology to the analysis of the results of Finite-Element Modeling (FEM) simulations at electric field singularities is proposed. The method, that can be easily applied in the post-processing phase of the electromagnetic FEM analysis workflow, is based on the weighted averaging of the calculated electric field magnitude within small volumes including the singularity point under investigation. In the paper, the proposed approach is applied to the electrical stress analysis of a high-voltage device modeled by means of a commercial electromagnetic FEM tool. In comparison to the conventional metric of the maximum field evaluation usually adopted for the analysis of electrical stress in insulators, our approach features several advantages: (i) the outcome of the analysis is independent of the numerical grid refinement at the singularity, thus allowing direct comparison of calculated electric field with the material dielectric strength; (ii) the method is robust against slight modifications of the geometrical shape of the singularity; (iii) on the other hand, for a given shape, the analysis outcome responds to significant variations of the singularity size or, in other words, of its sharpness; (iv) in the analysis of highvoltage devices, the approach can be applied for the estimation of the discharge volumes corresponding to different singularity types of different device geometries. In the paper, the new methodology is explained in details and is applied to simple but significant case studies. Advanced Electromagnetics 2018-09-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/796 10.7716/aem.v7i5.796 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 53-62 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/796/396 Copyright (c) 2018 G. Betti Beneventi, M. DalRe, L. Vincetti

oai:ojs.aempublisher.org:article/797 2021-03-10T13:07:52Z AEM:ART driver

Spectral and Dispersion Properties of Long Period Fiber Grating for Optical Communication Systems Jain, V. Pawar, S. Kumbhaj, S. Sen, P.K. long period fiber grating second and third order dispersion group delay group velocity dispersion phase factor Present work deals with the analytical study of spectral and dispersion properties of long period fiber grating (LPFG) under linear regime. The standard parameters in the understanding of the optical features of an LPFG have been analyzed using the linear coupling processes such that one can appreciate without going through the cumbersome mathematical treatment of coupled mode equations the basic characteristics of the grating. We have analyze transmittance, phase factor, group delay and group velocity dispersion (GVD) of the LPFG as functions of physical parameters like operating wavelength, grating length, induced index change, and detuning parameter. Special attention is paid to the study of GVD with second and third order dispersion contribution as well as the filter characteristics and delay response of the grating. In case of strong grating, we find that at a particular grating strength the resonance band splits into two bands. Negative group delay for certain values of coupling strength suggested that an LPFG can also be used as dispersion compensator in optical fiber communication. Advanced Electromagnetics 2018-09-04 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/797 10.7716/aem.v7i4.797 Advanced Electromagnetics; Vol. 7 No. 4 (2018); 109-116 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/797/386 Copyright (c) 2018 V. Jain, S. Pawar, S. Kumbhaj, P.K. Sen

oai:ojs.aempublisher.org:article/805 2021-03-10T13:08:53Z AEM:ART driver

Polarization Reconfigurable Square Patch Antenna for Wireless Communications Saravanan, M. Rangachar, M. J. S. Microstrip antenna Reconfigurable antenna Radiation pattern Slot antenna In this paper, a single fed polarization reconfigurable antenna is proposed. The antenna consists of a radiating patch incorporated with a diagonal-shaped slot at its center. Four p-i-n diodes are used for polarization reconfiguration. The p-i-n diodes are placed in diagonal slot region. The proposed antenna is designed to operate in three states – linear polarization (LP), left-hand circular polarization (LHCP) and right-hand circular polarization (RHCP) by biasing corresponding p-i-n diodes. The antenna gives measured peak gain of 6.2 dBi for LP state and 5.82 dBic for both RHCP and LHCP states. It also achieves 3-dB axial ratio bandwidth of 5.95% for both RHCP and LHCP configurations. The antenna finds application in areas of modern wireless communication. Advanced Electromagnetics 2018-09-04 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/805 10.7716/aem.v7i4.805 Advanced Electromagnetics; Vol. 7 No. 4 (2018); 103-108 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/805/385 Copyright (c) 2018 M. Saravanan, M. J. S. Rangachar

oai:ojs.aempublisher.org:article/806 2021-03-10T13:07:49Z AEM:ART driver

Miniaturized Wideband Microstrip Antenna for Recent Wireless Applications Shandal, S. A. Mezaal, Y. S. Mosleh, M. F. Kadim, M. A. Fractal microstrip antenna; pentagon slot; C-band; Partial ground plane; compactness. In this paper, a pentagon slot inside fractal circular patch microstrip resonator to design compact antenna over partial ground plane is introduced using 3rd iteration of adopted fractal geometry. This antenna is modeled on FR4 substrate with a size of (20 x 18) mm2, thickness of 1.5mm, permittivity of 4.3 and loss tangent of 0.02. The used type of feeding is microstrip line feed. It is designed to operate at wide frequency range of (4.5-9.3) GHz at resonant frequencies of 5.7GHz and 7.9GHz with impedance bandwidth of 4.8 GHz. Both lengths of ground plane Lg and width of feed line Wf are optimized in order to acquire optimum bandwidth. The simulated return loss values are -33 and -41 dB at two resonant frequencies of 5.7 and 7.9 GHz with gain of 3.2 dB. The simulated results offered noteworthy compatibility with measured results. Also, the proposed wideband microstrip antenna has substantial compactness that can be integrated within numerous wireless devices and systems. Advanced Electromagnetics 2018-09-04 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/806 10.7716/aem.v7i5.806 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 7-13 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/806/389 Copyright (c) 2018 S. Shandal, Y. Sabah Mezaal, M. Mosleh, M. Kadim

oai:ojs.aempublisher.org:article/815 2021-03-10T13:07:35Z AEM:ART driver

Compact Broadband Monopole Antenna for C Band Applications Pathak, P. Singhal, P. K. Antenna design Bandwidth enhancement Defected ground structure Microstripline feed This paper reports a new design of broadband monopole patch antenna. The proposed antenna possess corner truncated rectangular patch with slits and defected ground structure, these modifications considerably improves the impedance bandwidth to 41.29% over a wideband (5.1–7.59 GHz). The design is appropriate for wireless communication including WLAN IEEE 802.11 g/a (5.15–5.35 GHz and 5.725–5.825 GHz) and C Band (4–8 GHz) applications. An antenna prototype is fabricated using FR-4 with an electrical permittivity of 4.4. Experimental and numerical simulations of antenna’s radiation characteristic are also reported and exhibits good concurrence. Advanced Electromagnetics 2018-12-15 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/815 10.7716/aem.v7i5.815 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 118-123 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/815/408 Copyright (c) 2018 P. Pathak, P. K. Singhal

oai:ojs.aempublisher.org:article/818 2021-03-10T13:07:33Z AEM:ART driver

Theoretical and Experimental Study of Split Semi Horse Shoe Structure Singh, G. Pattnaik, S. S. SSHSS Metamaterials Multiband Negative permeability Negative permittivity In this paper a new planar metamaterial structure that looks like semi-horse shoe in shape (SSHSS) is designed and simulated. Theoretical analysis of proposed structure done using equivalent circuit theory. Medium effective parameters are extracted using modified NRW approach which proved the metamaterial property of the new unit cell. Radiation pattern, directivity and gain of the new structure were illustrated which gives the possibility of using SSHSS as the antenna. Proposed structure shows multiband characteristics. This antenna shows high directivity (7.92 dBi, 7.86 dBi, 10.11 dBi) and moderate gain (2.55 dBi, 3.90 dBi, 5.07 dBi) at 5.83 GHz, 8.41 GHz, 10.68 GHz respectively. RT duroid is used for fabrication of prototype of the proposed structure. This new structure can be used as metamaterial inspired antenna as well as normal patch antenna. Experimental results shows good agreement with simulated and theoretical results.The proposed structure has been simulated using IE3D electromagnetic simulator. Advanced Electromagnetics 2018-12-15 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/818 10.7716/aem.v7i5.818 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 131-136 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/818/410 Copyright (c) 2018 G. Singh, S. S. Pattnaik

oai:ojs.aempublisher.org:article/820 2021-03-10T13:09:03Z AEM:ART driver

Compact Size Triple Notched-bands UWB Antenna with Sharp Band-Rejection Characteristics at WiMAX and WLAN Bands Habash, M. F. Tantawy, A. S. Atallah, H. A. Abdel-Rahman, A. B. Band-notched; Ultra-Wideband (UWB); U-shaped resonators In this paper, a compact triple band-notched Ultra Wideband (UWB) antenna with sharp band-elimination features and controlled notched bandwidths is proposed and discussed. The design is made up of a rectangular-shaped   patch UWB planar monopole antenna with double collections of band-notched configurations. The band-notched configurations are involved to produce the desired lower and upper stop bands with good frequency selectivity and suitable stop bandwidths. The first notch is realized by using a C-shaped slot etched in the radiating patch in order to eliminate the interference at the WiMAX (3.4 - 3.8 GHz) applications. The second and the third notches are realized together by using a pair of U-shaped resonators that are located beside the feed line in both sides to eliminate the interference with the lower WLAN (5.15–5.35 GHz) and the higher WLAN (5.725–5.825GHz) bands.  Additionally, the bandwidths of the lower and upper stop bands can be control separately by changing the parameters of the band-notched configurations. Furthermore, the suggested triple notched bands UWB antenna is optimized, fabricated, and measured for verification purposes. The measured results are close to the simulated ones. Advanced Electromagnetics 2018-08-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/820 10.7716/aem.v7i3.820 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 99-103 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/820/372 Copyright (c) 2018 M. F. Habash, A. S. Tantawy, H. A. Atallah, A. B. Abdel-Rahman

oai:ojs.aempublisher.org:article/829 2021-03-10T13:07:50Z AEM:ART driver

Circularly Polarized Split Ring Resonator Loaded Slot Antenna Parvathy, A. R. Ajay, V. G. Thomaskutty, M. Slot Antenna Circular polarization Split Ring Resonator Microstripline Feed A compact circularly polarized printed slot antenna operating at 2.45 GHz is reported. The antenna consists of a pair of rotated square split ring resonators (SRR) inside a rectangular slot etched on the ground plane of an FR-4 dielectric substrate. A microstrip open-loop feed is etched on the backside of the dielectric substrate to feed the slot and the split ring resonators. The overall size of the antenna is 60x42x1.6 mm3. The measured -10dB impedance bandwidth is 10.48% (2.38-2.64 GHz) and the measured 3dB axial ratio (AR) bandwidth covers the entire impedance bandwidth. Advanced Electromagnetics 2018-09-04 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/829 10.7716/aem.v7i5.829 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 1-6 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/829/388 Copyright (c) 2018 A. R. Parvathy, V. G. Ajay, M. Thomaskutty

oai:ojs.aempublisher.org:article/837 2021-03-10T13:07:46Z AEM:ART driver

Triple band Compact Fractal Antenna with Defected Ground Plane for Bluetooth, WiMAX, and WLAN Applications Harbadji, M. Boufrioua, A. Denidni, T. A. Compact, CPW, Fractal, S-shaped, slots, multiband This paper presents a novel compact coplanar waveguide (CPW) monopole fractal-shaped antenna using fractal patch composed of hexagons with defected ground plane. Inclusion of a pair of S-shaped slots on the ground plane is used to  extend the antenna impedance bandwidth and to provide multiband operation. The antenna has a compact size of 35×35×1.27 mm3 which is compact. The antenna is designed, fabricated and measured. Good performances in terms of return loss, gain and radiation pattern are obtained in the  operating bands, which makes the proposed antenna a good  candidate for multiband wireless systems. The obtained results show that the antenna operates at Bluetooth,Worldwide Interoperability for Microwave Access (WiMAX), and Wireless Local Area Network (WLAN). Advanced Electromagnetics 2018-09-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/837 10.7716/aem.v7i5.837 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 26-30 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/837/392 Copyright (c) 2018 M. Harbadji, A. Boufrioua, T. A. Denidni

oai:ojs.aempublisher.org:article/840 2021-03-10T13:07:39Z AEM:ART driver

Effect of Substrate Scaling on Microstrip Patch Antenna Performance Esmaeilkhah, A. Ghobadi, C. Nourinia, J. Majidzadeh, M. Antenna Maxwell equations Microstrip patch Scale factor Scaling The Maxwell field equations (MFEs), as ecumenical model of electromagnetic phenomena, are scale-invariant under Lorentz Transformation (LT). To apply LT, some considerations are required which are not all practically available or technologically attainable; hence, the scale-invariant feature may not be reached effectively. Paving the way to focus on this issue, the effect of substrate thickness scaling as an uncontrollable parameter, is explored on eight identical patch antennas with different substrate thicknesses. In this way, the resonant frequency and complex value of return loss are measured. The effect of manufacturing tolerances of dielectric thickness on resonant frequency deviation and return loss magnitude are carefully studied, too. Also the unwanted distortive effect of selected electrical connection, say as a female SMA connector, is investigated at higher frequencies. The obtained results are comparatively analyzed which confirm the practical bottlenecks in meeting the antenna parameters scaling. Advanced Electromagnetics 2018-11-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/840 10.7716/aem.v7i5.840 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 82-86 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/840/399 Copyright (c) 2018 A. Esmaeilkhah, C. Ghobadi, J. Nourinia, M. Majidzadeh

oai:ojs.aempublisher.org:article/841 2021-03-10T13:07:32Z AEM:ART driver

Metamaterial Based Circular Disc Patch Antenna Miniaturization Kumar, V. Wu, Y. CRR Metamaterial Patch antenna Spice Miniaturization A novel metamaterial structure has been proposed for its operation at 2.4 GHz. A circular disc patch antenna resonating at dual band frequency with 2.4 GHz and 3.36 GHz has been designed using full field solver CST MWS tool and the loading effect of the metamaterial has been shown. The loading of metamaterial shows a radial size reduction of 56.71% in the circular disc patch (dimensional space reduction by 81.26%) while the effect of loading the metamaterial array and loading the metamaterial with defected ground plane show that without reducing the disc patch radius, the patch antenna can resonate at 1.00 and 1.942 GHz respectively, these yield a lower frequency shift of 58.33% and 19.79%. The designed metamaterial consists of two copper conductive concentric circular rings over a polyimide substrate. Various antenna parameters such as S11, VSWR, Bandwidth, Gain, Directivity and Radiation efficiency have been obtained for the circular disc patch antenna, circular disc patch antenna loaded with the metamaterial, circular disc patch antenna loaded with an array of metamaterial and are compared. A spice circuit has been derived for the reflection coefficient of the circular disc patch without loading the metamaterial, circular disc patch loaded with metamaterial using Keysight based ADS tool for its inclusion in a traditional electrical circuit solver tool. Advanced Electromagnetics 2018-12-15 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/841 10.7716/aem.v7i5.841 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 137-144 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/841/411 Copyright (c) 2018 V. Kumar, Y. Wu

oai:ojs.aempublisher.org:article/845 2021-03-10T13:07:14Z AEM:ART driver

Design and Characterization of a Compact Single Layer Modified S-Shaped Tag Antenna for UHF-RFID Applications Ennasar, M. A. Aznabet, I. EL Mrabet, O. Essaaidi, M. RFID technology RFID tag antenna Conjugate matching In this paper, we report the design of a new compact single layer modified S-shaped tag antenna for UHF-RFID applications. To achieve a compact size of 51×34 mm2 for this tag antenna, the technique of using S shaped strip is applied, and by further adding a pair of equilateral triangular stubs into this structure, good impedance matching can be obtained at 915 MHz, which is the center frequency of the North-American UHF-RFID band (902 to 928 MHz). Besides exhibiting acceptable 5m read range in free space at 915 MHz, the proposed design shows a read range of about 4.5 when mounted on a metallic object (200 ×30 cm2) separated by spacer foam of thickness 1 cm. Furthermore, the proposed design shows a reasonable read ranges when it is mounted on different dielectrics with low permittivity. The proposed design has a simple configuration, low cost, acceptable read range, and can work on various background materials.   Advanced Electromagnetics 2019-03-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/845 10.7716/aem.v8i1.845 Advanced Electromagnetics; Vol. 8 No. 1 (2019); 59-65 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/845/431 Copyright (c) 2019 M. A. Ennasar, I. Aznabet, O. EL Mrabet, M. Essaaidi

oai:ojs.aempublisher.org:article/853 2021-03-10T13:07:37Z AEM:ART driver

A Compact ACS-Fed Tri-band Microstrip Monopole Antenna for WLAN/WiMAX Applications Kahina, D. Mouloud, C. Mokrane, D. Faiza, M. Rabia, A. Microstrip antenna Tri-band antenna asymmetric coplanar strip WiMAX/WLAN This paper proposes a novel small asymmetric coplanar strip (ACS) fed tri-band monopole antenna for WLAN and WiMAX applications. To tune and create multiple resonant frequencies, the exciting strip of monopole antenna is connected to two different arms which are a J-shaped directed toward the asymmetric ground plane and an open stub. The proposed monopole antenna with a total size of 14.6 x17.5 mm2 is fabricated and tested. The measured results indicate that the antenna has impedance bandwidths for 10-dB return loss reach about 500 MHz (2.01-2.52 GHz), 230 MHz (3.48-3.71 GHz) and 1.2GHz (5.59-6.72 GHz) which cover widely the 2.4/5.8 GHz WLAN bands and the 3.5GHz WiMAX band. The simulated radiation patterns of the proposed antenna at the three resonant frequencies have a dipole-like radiation pattern in both E-and H-Planes. The compact size, the simple structure and good radiation performances of the proposed antenna makes it well-suited forthe intended applications. Advanced Electromagnetics 2018-11-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/853 10.7716/aem.v7i5.853 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 87-93 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/853/400 Copyright (c) 2018 D. Kahina, C. Mouloud, D. Mokrane, M. Faiza, A. Rabia

oai:ojs.aempublisher.org:article/854 2021-03-10T13:09:02Z AEM:ART driver

PCB access impedances extraction method of in-situ integrated circuit Xu, Z. Ravelo, B. Gantet, J. Marier, N. Access impedances, circuit theory, modeling method, electronic system, impedance extraction method. This article describes an extraction technique of input and output impedances of integrated circuits (ICs) implemented onto the printed circuit boards (PCBs). The feasibility of the technique is illustrated with a proof-of-concept (POC) constituted by two ICs operating in a typically transmitter-receiver (Tx-Rx) circuit. The POC system is assumed composed of three different blocks of emitter signal source, load and interconnect passive network. This latter one is assumed defined by its chain matrix known from its electrical and physical characteristics. The proposed impedance extraction method is elaborated from the given signals at the transmitter output and receiver input. The terminal access impedances are formulated in function of the parameters of the interconnect system chain matrix. The feasibility of the method is checked with a passive circuit constituted by transmission lines driven by voltage source with RL-series network internal impedance and loaded at the output by the RC-parallel network. Good correlation between the access impedance reference and calculated is found. Advanced Electromagnetics 2018-08-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/854 10.7716/aem.v7i3.854 Advanced Electromagnetics; Vol. 7 No. 3 (2018); 108-116 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/854/374 Copyright (c) 2018 Z. Xu, B. Ravelo, J. Gantet, N. Marier

oai:ojs.aempublisher.org:article/860 2021-03-10T13:08:55Z AEM:ART driver

New Compact Wideband Microstrip Antenna for Wireless Applications Shandal, S. Mezaal, Y. S. Kadim, M. Mosleh, M. Fractal rectangular MSA right angle triangle slot C and X band wireless systems In this paper, a miniature rectangular microstrip antenna over partial ground plane is presented by utilizing a space-filling property of fractal geometry in this design. It is simulated by High Frequency Software Simulator (HFSS) software, fabricated and tested by Vector Network Analyzer (VNA).Two types of slots are introduced in order to enhance antenna parameters such as bandwidth and return loss S1.1. This antenna is fabricated on FR4 substrate with a small size of (18 x 16 x 1.5) mm3, 1.5mm substrate thickness, 4.3 permittivity and 0.02 loss tangent. To feed this antenna,  microstrip line feed is used. This antenna is implemented for wide bandwidth (4.8-11.6) GHz, and has three resonant frequencies at 5.5GHz, 8.3GHz and 10.7GHz with impedance bandwidth of 6.8GHz. The gap value g between partial ground plane and rectangular patch at top layer is optimized in order to achieve optimal simulated return loss S1.1 is (-46,-32,-14) dB at three resonant frequencies (5.5, 8.3, 10.7) GHz and optimal radiation efficiency of 93.42% with gain of 3.63dB. The simulated results have tolerable agreement with measured results. This antenna is suitable for wireless computer applications within  C and X band  communications. Advanced Electromagnetics 2018-09-03 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/860 10.7716/aem.v7i4.860 Advanced Electromagnetics; Vol. 7 No. 4 (2018); 85-92 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/860/383 Copyright (c) 2018 S. Shandal, Y. S. Mezaal, M. Kadim, M. Mosleh

oai:ojs.aempublisher.org:article/862 2021-03-10T13:07:44Z AEM:ART driver

Comparative Study of the Accuracy of Analytical Inductance Formulae for Square Planar Spiral Inductors Aebischer, H. A. analytical inductance formulae square planar spiral inductors error analysis comparative study In the design of radio frequency (RF) microelectronic integrated circuits (IC’s) and of antennas for short-wave radio frequency identification (RFID) and telemetry systems, planar spiral coils are important components. Many approximate analytical formulae for calculating the inductance of such coils can be found in the literature. They can simplify the problem of designing inductors to a predefined inductance considerably. But the error statistics given by different authors cannot be compared because they are based on different or unknown domains of definition. Hence, it is not possible to decide which formula is best in a given case by merely studying the literature. This paper compares the maximum relative errors of six of some of the most cited formulae in the literature. To all formulae, the same domains of definition are applied. Each of them spans all four dimensions of the parameter space. Precise inductances are obtained numerically with the help of the free scientific and industrial standard software FastHenry2 and used as reference values to calculate the errors of the formulae. It has been found that the alleged maximum errors reported by some authors are far too optimistic. Only two formulae feature small enough errors to be useful in circuit design. The method and the domains of definition applied in the present study may also prove useful for the assessment of future formulae. Advanced Electromagnetics 2018-09-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/862 10.7716/aem.v7i5.862 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 37-48 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/862/394 Copyright (c) 2018 H. A. Aebischer

oai:ojs.aempublisher.org:article/873 2021-03-10T13:07:30Z AEM:ART driver

Scattering from a Buried PEMC Cylinder Illuminated by a Normally Incident Plane Wave Propagating in Free Space Hamid, A. Cooray, F. Scattering buried PEMC circular cylinder, cylindrical wave expansions, multiple reflections, planar interface, rigorous solution. A rigorous solution is presented to the problem of scattering by a perfect electromagnetic conducting (PEMC) circular cylinder buried inside a dielectric half-space that is excited by a normally incident transverse magnetic (TM) plane wave propagating in free space. The plane wave incident on the planar interface separating the two media creates fields transmitting into the dielectric half- space becoming the known primary incident fields for the buried cylinder. When the fields scattered by the cylinder, in response to those fields incident on it, are incident at the interface, they generate fields reflected into the dielectric half-space and fields transmitted into free space. These fields, and the fields scattered by the cylinder are expressed in terms of appropriate cylindrical waves consisting of unknown expansion coefficients which are to be determined. Imposing boundary conditions at the surface of the cylinder and at a point on the planar interface, enables the evaluation of the unknown coefficients. This procedure is then replicated, by considering multiple reflections and transmissions at the planar interface, and multiple scattering by the cylinder, till a preset accuracy is obtained for the reflection coefficient at the particular point on the interface. The refection coefficient at this point is then computed for cylinders of different sizes, to show how it varies with the PEMC admittance of the cylinder, its burial depth, and the permittivity of the dielectric half-space. Advanced Electromagnetics 2018-12-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/873 10.7716/aem.v8i1.873 Advanced Electromagnetics; Vol. 8 No. 1 (2019); 1-7 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/873/413 Copyright (c) 2018 A. Hamid, F. Cooray

oai:ojs.aempublisher.org:article/874 2021-03-10T13:09:00Z AEM:ART driver

Design of High Gain Novel Dielectric Resonator Antenna Array for 24 GHz Short Range Radar Systems Haddad, A. Aoutoul, M. Rais, K. Essaaidi, M. Faqir, M. Bouya, M. DRAs High gain SRR LRR Anti-collision automotive radar 24 GHz in this work we present a 16x1 array’ elements of a high gain Novel shape designed Dielectric Resonator Antenna (NDRA), having a low dielectric constant value of 18, for wide band (WB) and narow band (NB) 24 GHz automotive Short Range Radar (SRR) applications. The proposed NDRA array is feed by an efficient microstrip network feeding mechanism and presents wide impedance bandwidth (426 MHz), high gain (20.9 dBi), high efficiency (96%) and directional radiation pattern at 24 GHz with narrow angular beam-width of 6.4°. Computed NDRA array results allow the proposed design to be practical for the next automotive radar generations. Parametric studies have been analyzed using the Finite Difference Time Domain (FDTD) method of the CST-MW time domain solver and results, of the optimal structure, have been validated by the Finite Element Method (FEM) used in HFSS electromagnetic (EM) simulator. Advanced Electromagnetics 2018-08-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/874 10.7716/aem.v7i4.874 Advanced Electromagnetics; Vol. 7 No. 4 (2018); 12-18 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/874/376 Copyright (c) 2018 A. Haddad, M. Aoutoul, K. Rais, M. Essaaidi, M. Faqir, M. Bouya

oai:ojs.aempublisher.org:article/883 2021-03-10T13:08:54Z AEM:ART driver

New Compact Microstrip Filters Based on Quasi Fractal Resonator Mezaal, Y. S. Saleh, H. H. Al-saedi, H. quasi fractal resonator bandpass and bandstop filters narrow band frequency response, compactness This paper presents new microstrip devices  as single band bandpass and multi band bandstop filters. The proposed filters use  slotted patch microstrip resonator based on quasi fractal geometry, simulated by AWR12 software package. Both filters have quasi elliptic frequency response, designed at centre frequency of  2.437 GHz for bandpass filter and at band frequencies of  2.434, 4.032, 4.976 and 5.638 GHz GHz respectively, for multi bandstop filter. All filters are employed using RT/Duroid 6010.8 LM substrate of  dielectric constant and 1.27 mm dielectric thickness. Simulation results show that the designed quasi fractal bandpass filter has very narrow fractional bandwidth of 0.38 %  which is very rare in microstrip filter design. On the other hand,  the projected bandstop filter offers multi  narrow rejection bands that is  useful in broadband wireless schemes influencing from fixed interferences. Both filters  present satisfactory S11 and S21 responses besides smallness properties that stand for interesting features of the newest wireless applications. The simulated and measured frequency responses for both designed filters are in good agreement. Advanced Electromagnetics 2018-09-03 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/883 10.7716/aem.v7i4.883 Advanced Electromagnetics; Vol. 7 No. 4 (2018); 93-102 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/883/384 Copyright (c) 2018 Y. S. Mezaal, H. H. Saleh, H. Al-saedi

oai:ojs.aempublisher.org:article/894 2021-03-10T13:07:16Z AEM:ART driver

Lightning Response of Multi-Port Grids Buried in Dispersive Soils: An Approximation versus Full-wave Methods and Experiment Sajjadi, S. S. Ostadzadeh, S. R. MTL, grounding grid, dispersive soil In this paper, application of multi-conductor transmission line model (MTL) in transient analysis of grounding grids buried in soils with frequency-dependent electrical parameters (dispersive soil) is investigated. In this modeling approach, each set of parallel conductors in the grounding grid is considered as a multi-conductor transmission line (MTL). Then, a two-port network for each set of parallel conductors in the grid is then defined. Finally, the two-port networks are interconnected depending upon the pattern of connections in the grid and its representative equations are then reduced. Via solving these simplified equations, the transient analyses of grounding grids is efficiently carried out. With the aim of validity, a number of examples previously published in literature are selected. The comparison of simulation results based on the MTL shows good agreement with numerical and experimental results. Moreover, in despite of numerical methods computational efficiency is considerably increased. Advanced Electromagnetics 2019-03-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/894 10.7716/aem.v8i1.894 Advanced Electromagnetics; Vol. 8 No. 1 (2019); 43-50 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/894/429 Copyright (c) 2019 S. S. Sajjadi, S. R. Ostadzadeh

oai:ojs.aempublisher.org:article/901 2021-03-10T13:07:48Z AEM:ART driver

A New Lowpass Filter Unit Cell with Sharp Roll-off and Improved Stopband Performance in Coplanar Waveguide Technology Bijari, A. Mohebrad, M. coplanar waveguide (CPW) Lowpass filter unit cell Roll-off In this paper, a new compact unit cell for a coplanar waveguide (CPW) lowpass filter (LPF) is proposed. By combining a pair of coupled parallel stepped impedance resonators (SIRs) and high impedance short stubs in the CPW line, a fifth-order elliptic lowpass filter unit cell (LUC) is designed. The extra transmission zero introduced by parallel coupled SIRs is used to extend the stopband and increase the roll-off rate. The characteristics of the proposed LUC is investigated to achieve a sharp roll-off and a wide stopband. The measured results are in accordance with the simulated results. It has an insertion loss less than 0.9 dB from dc to 6 GHz, and a wide -15 dB stopband from 7.5 to 18 GHz. In addition, the filter dimensions are as small as 4.9 mm × 8.7 mm, that is, 0.046λg2, where λg is the guided wavelength at the cut-off frequency. The filter structure is simple and easy to fabricate as well. Advanced Electromagnetics 2018-09-04 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/901 10.7716/aem.v7i5.901 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 14-19 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/901/390 Copyright (c) 2018 A. Bijari, M. Mohebrad

oai:ojs.aempublisher.org:article/904 2021-03-10T13:07:18Z AEM:ART driver

Improved Efficiency of Inductive Power Transfer in Misalignment Conditions with Multi Coil Design Laksono, P. B. Alaydrus, M. Inductive Power Transfer, Resonance Frequencies, Misalignment, Wireless Charging In charging process of electric vehicle, a misalignment between the transmitter (Tx) and receiver (Rx) coupling  structure decreases the efficiency of the wireless power transfer. In inductive power transfer system, misalignment reduces the effective coupling between the Tx and Rx coils. In this work, based on previous multiple coil structures, a new multi coil design in proposed to increase the efficiency of the power transfer. Here, a multi coil structure with two rectangular and four spiral coils is designed with the overall dimension of the coil structure 26.5 cm x 36.5 cm. The measurement shows, that for coil distance below 10.3 cm and a lateral misalignment of maximal 10 cm (27.4%), the efficiency of the designed multi coil structure is better compared to previous coil structures. However for larger coil distance or larger misalignment, the efficiency of the new coil structure deteriorates significantly. Advanced Electromagnetics 2019-03-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/904 10.7716/aem.v8i1.904 Advanced Electromagnetics; Vol. 8 No. 1 (2019); 30-36 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/904/425 Copyright (c) 2019 P. B. Laksono, M. Alaydrus

oai:ojs.aempublisher.org:article/917 2021-03-10T13:07:34Z AEM:ART driver

X-Band GaN High-Power Amplifier Using Hybrid Power Combining Technique for SAR Applications Lee, Y.-J. Chang, C.-Y. Chou, Y.-H. Tarn, I-Y. Yaung, J. Y.-C. Tarng, J.-H. Chung, S.-J. GaN HEMT high power amplifier hybrid power combining SAR X-band An X-band high-power amplifier (HPA) based on gallium nitride (GaN) high electron mobility transistors (HEMTs) has been developed for synthetic aperture radar (SAR) applications. A hybrid power combining technique, including microstrip circuits and waveguides, is used to design the HPA. For reducing the size, four 50 W GaN HEMTs cascaded with one 1-to-4 power divider and one 4-to-1 power combiner form a 4-way power combined PCB circuits. For combing the high power and driving an antenna, two PCB circuits are combined by magic-T waveguides. The transmission efficiency of the power combining is approximately 80%. In the 10% duty cycle (pulse width 100 us), the output power of the HPA is over 200 W across the band of 9.5–9.8 GHz. The maximum output power is 230 W at 9.5 GHz, and the power gain is 8.3 dB at 46.1°C. Advanced Electromagnetics 2018-12-15 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/917 10.7716/aem.v7i5.917 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 124-130 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/917/409 Copyright (c) 2018 Y.-J. Lee, C.-Y. Chang, Y.-H. Chou, I-Y. Tarn, J. Y.-C. Yaung, J.-H. Tarng, S.-J. Chung

oai:ojs.aempublisher.org:article/929 2021-03-10T13:06:51Z AEM:ART driver

A Compact Multi-Band Monopole Antenna using Metamaterial for WLAN/WiMAX Applications Mouhouche, F. Azrar, A. Dehmas, M. Djafri, K. Metamaterial, Monopole antenna, tri-band, WLAN, and WiMAX applications In this paper, a tri-band printed monopole antenna with electrically coupled metamaterial units is proposed and investigated. The proposed antenna is designed to cover WLAN/WiMAX applications. The antenna consists of a printed strip line and two double metamaterial unit cells of different size placed near the monopole antenna on opposite sides. Each unit cell exhibits a negative permeability over the resonance frequency at 2.5 GHz and 3.62 GHz, which produces magnetic couplings with the monopole antenna. The proposed antenna structure was fabricated and measured. The measured -10 dB bandwidth for the return loss is from 2.47GHz-2.51GHz, 3.59GHz-3.69GHz, and 5.3GHz - 7.2 GHz, which are suitable for (WLAN: 2.4–2.484,  5.15–5.35,  and  5.725–5.85  GHz) and  (WiMAX: 2.5–2.69, 3.4–3.8, and 5.25–5.85 GHz) band Applications. By using the switches across the gap of proposed-MTM unit cell, the effect of this unit deactivated and its resonance frequency will disappear. Hence, the proposed antenna maintains the omnidirectional radiation pattern. Advanced Electromagnetics 2019-09-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/929 10.7716/aem.v8i3.929 Advanced Electromagnetics; Vol. 8 No. 3 (2019); 92-98 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/929/456 Copyright (c) 2019 F. Mouhouche, A. Azrar, M. Dehmas, K. Djafri

oai:ojs.aempublisher.org:article/933 2021-03-10T13:07:31Z AEM:ART driver

Design of dual and Wideband Rectangular Patch Antenna for C and X Band Applications Lakrit, S. Microstrip Ultra-wideband UWB Return loss HFSS VSWR In this paper, we resolve two issues of microstrip antennas, which are miniaturization and efficiency behavior. For  that, a rectangular patch antenna with 16×18×1.6 mm3 dimensions with dual-band characteristics, was designed, fabricated and characterized.  In order to improve the problem of narrow bandwidth in  microstrip antennas, we implement in this study the slot  technique, allowing us to achieve our purpose. This technique,  lead to a good reflection coefficient and VSWR. The  characteristics of the fabricated antenna were measured and  analyzed by Vector Network Analyzer. The results show two  resonance frequencies that define two bandwidths defined by a  return loss less than -10 dB and are respectively; 7.47 GHz at a  frequency of 400 MHz, and 11.01 GHz at a frequency of 790  MHz. Also, the obtained gain has a good value and it’s very  remarkable according to the small size of the structure, with  a peak value of 6.1 dB at 12.5 GHz.  The small size and good characteristics enlarged the applications  domains of our structure, from telecommunications and  especially Radar, satellite communications to medical and  wireless applications. Advanced Electromagnetics 2018-12-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/933 10.7716/aem.v7i5.933 Advanced Electromagnetics; Vol. 7 No. 5 (2018); 145-150 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/933/412 Copyright (c) 2018 S. Lakrit

oai:ojs.aempublisher.org:article/934 2021-03-10T13:07:18Z AEM:ART driver

Artificial Chiral Media Using Conical-Coil Wire Inclusions DeMartinis, G. B. Kalluri, D. Chiral Media; Conical Coils; Electromagnetic Modeling; Helical Inclusion; Method of Moments; Mixing Relations; Tumble Averaged Forward Scattering The electromagnetic response of the electrically small conical wire coil as a chiral inclusion is described. An existing model of the helical coil wire inclusion is extended to model the conical coil wire inclusion, using the Method of Moments (MoM) to determine the dominant resonant circuit impedance of the inclusion. Material parameters are determined using mixing relations with polarizability coefficients expressed for the conical coil inclusion geometry. The polarization conversion of a dielectric slab loaded with conical coil inclusions is predicted and compared to simulated results using a forward scattering technique. Advanced Electromagnetics 2019-03-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/934 10.7716/aem.v8i1.934 Advanced Electromagnetics; Vol. 8 No. 1 (2019); 37-42 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/934/426 Copyright (c) 2019 G. B. DeMartinis, D. Kalluri

oai:ojs.aempublisher.org:article/935 2021-03-10T13:07:26Z AEM:ART driver

A High-Power Microwave Reflectarray Antenna Based on Perforated Dielectric Substrate Abdi Tazehabadi, S. Jam, S. high power microwave antenna azimuthally symmetric modes reflectarray antenna dielectric reflectarray perforated dielectric substrate A high power microwave antenna based on the reflectarray concept is designed and investigated in this paper. The reflectarray aperture is directly driven by an azimuthally symmetric mode and a directional boresight beam is realized through azimuthally introducing a phase shift of 90 to the phase shift profile of reflectarray unit cells. A sample model operating at X-band is designed to verify the validity of the proposed approach. Variable diameter air-filled holes through a host dielectric material are exploited as the phase-shifting unit cells because of the advantage of higher power handling capacity. Theoretical analysis and full-wave simulations are accomplished and results are in good agreements. A collimated beam of circular polarization with peak gain of 20.2 dB and axial ratio of 1.3 are achieved at the boresight direction for the design frequency of 10 GHz. The radiation performance of the proposed antenna as well as its compact structure makes it a potential candidate for high gain high power applications. Advanced Electromagnetics 2019-03-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/935 10.7716/aem.v8i1.935 Advanced Electromagnetics; Vol. 8 No. 1 (2019); 16-22 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/935/418 Copyright (c) 2019 S. Abdi Tazehabadi, S. Jam

oai:ojs.aempublisher.org:article/946 2021-03-10T13:06:34Z AEM:ART driver

Analysis of the Effect of a Gyrotropic Anisotropy on the Phase Constant and Characteristic Impedance of a Shielded Microstrip Line Sayad, D. Zebiri, C. Daoudi, S. Benabdelaziz, F. Complex medium planar transmission line anisotropic substrate moments method uniaxial anisotropy gyrotropic anisotropy; spectral domain In this work, we present an analytical modeling of a highly complex medium-based shielded microstrip line. The study aims at a numerical evaluation of the characteristic impedance and the dispersion characteristics of the dominant hybrid mode in the microstrip line printed on an anisotropic medium. The newly considered complex anisotropy has a full 3×3 tensor form of permittivity and permeability. The study is based on the derivation of the Green's functions of the general complex-medium-based structure in the Fourier domain. The spectral Method of Moments (MoM) and the Galerkin's procedure are combined to solve the resulting homogeneous system of equations. The effect of the gyrotropic anisotropy on the phase constant and the characteristic impedance is particularly investigated. Original and interesting numerical results are obtained and discussed. Our results are found to be in good agreement with available isotropic case data reported in literature. Advanced Electromagnetics 2019-12-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/946 10.7716/aem.v8i5.946 Advanced Electromagnetics; Vol. 8 No. 5 (2019); 15-22 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/946/481 Copyright (c) 2019 C. Zebiri, D. Sayad, S. Daoudi, F. Benabdelaziz

oai:ojs.aempublisher.org:article/952 2021-03-10T13:07:10Z AEM:ART driver

Light-Controlled Polarization of MM-Waves with Photo-Excited Gratings in a Resonant Semiconductor Slab Yurchenko, V. Navruz, T. Ciydem, M. Altintas, A. MM waves Quasi-optics polarization optically-controlled devices We investigated photoconductive gratings in the resonant semiconductor layers as light-controlled polarizers for the millimeter (MM) waves. We compared the effects of strip-like, wire-like, and fin-like gratings excited by the red light and the IR radiation in Silicon wafers, respectively. The fin-like gratings are shown to be the preferred structures that can operate at the limited light intensity. The light-sensitive shift of maxima of transmitted power and polarizing efficiency towards the lower frequency band is observed. The effect makes photoconductive gratings and similar patterns potentially suitable for the design of light-controlled frequency-tuning and frequency-modulating components of resonant quasi-optical devices. Advanced Electromagnetics 2019-05-18 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/952 10.7716/aem.v8i2.952 Advanced Electromagnetics; Vol. 8 No. 2 (2019); 92-100 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/952/438 Copyright (c) 2019 V. Yurchenko, T. Navruz, M. Ciydem, A. Altintas

oai:ojs.aempublisher.org:article/953 2021-03-10T13:07:27Z AEM:ART driver

Composite Material Characterization using Eddy Current by 3D FEM Associated with Iterative Technique Hachi, D. Benhadda, N. Helifa, B. Lefkaier, I. K. Abdelhadi, B. Composite, Carbon Fiber Reinforced Polymer, Eddy Current, 3D Finite Element Method, T- Formulation, T-Iterative, Pancake Sensor, Rectangular Sensor, non Destructive Testing. In this paper, an iterative technique, employing the T formulation associated with the finite element method, based on Maxwell's equations and the Biot-savart law, is used for analyzing the density of eddy currents in composite carbon fiber reinforced polymer (CFRP) materials. For this purpose, a code has been developed for solving an electromagnetic 3D non-destructive evaluation problem. This latter permits the characterization of this CFRP and determinate of fibers orientation using the impedance variation which is implanted in polar diagram. Firstly, the obtained results are compared with those of the analytical model. This comparison reveals a high concordance which proves the validity of the proposed method. Secondly, three different applications are shown for illustrating the characterization of unidirectional, bidirectional and multidirectional piece using a rectangular coil plotted in normalized impedance diagram. Advanced Electromagnetics 2019-03-10 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/953 10.7716/aem.v8i1.953 Advanced Electromagnetics; Vol. 8 No. 1 (2019); 8-15 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/953/417 Copyright (c) 2019 H. Dahmane, N. Benhadda, B. Helifa, I. K. Lefkaier, B. Abdelhadi

oai:ojs.aempublisher.org:article/961 2021-03-10T13:07:04Z AEM:ART driver

A Novel Augmented Railgun Using Permanent Magnets Heydari, M. B. Asgari, M. Gharib, L. Keshtkar, A. Jafari, N. Zolfaghari, M. Augmented Railgun; Permanent magnet; Lorentz force; Magnetic field A novel augmented railgun using a permanent magnet is proposed in this paper. The effects of the permanent magnet on the magnetic field and distribution of current density have been investigated. High current densities in the railguns can lead to high local temperature and erosion of the rails. Therefore, the current densities in the rails and armature should be decreased without the reduction of the Lorentz force which is required for acceleration. For this purpose, augmentation of the magnetic field can be used as an effective method. The Finite Element Method (FEM) simulations have been applied in this article to analyze the performance of the railgun in the presence of the magnets. Two augmented railgun structures have been introduced to produce a constant external magnetic field. For both structures, augmented railgun characteristics are studied in comparison to the railgun without the augmentation. The results show that augmentation with permanent magnet increases railgun efficiency, especially in low current railguns. For pulse current source I=30kA, Lorentz force of the augmented railgun with four magnets is 2.02 times greater than the conventional railgun. Advanced Electromagnetics 2019-06-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/961 10.7716/aem.v8i1.961 Advanced Electromagnetics; Vol. 8 No. 1 (2019); 99-105 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/961/443 Copyright (c) 2019 M. B. Heydari, M. Asgari, L. Gharib, A. Keshtkar, N. Jafari, M. Zolfaghari

oai:ojs.aempublisher.org:article/977 2021-03-10T13:07:23Z AEM:ART driver

The Prototype of a Wideband Ku-Band Conical Corrugated Horn Antenna with 3-D Printing Technology Carkaci, M. E. Secmen, M. 3-D printing corrugated horn antenna direct-broadcast satellite (DBS) communication spray coating This study is about the design and production of a conical corrugated horn antenna used to feed reflector antennas in satellite communication (direct broadcast satellite-DBS) systems. The antenna designed with CST Microwave Studio program operates within wideband of 10.5-18.5 GHz at Ku-band. The prototype is realized with new generation 3D printing technology and conductive paint coating method, which makes the antenna lightweight and provides low cost and faster production. According to measurement results, the antenna has return loss almost better than 20 dB, gain value of minimum 14.5 dBi and sidelobe level of -18 dB at most within 1.76:1 frequency bandwidth. Antenna is observed to have a gain loss of at most 1.5-2 dB within the band as compared to the same antenna with high conductivity metal, which needs higher cost and production time for the manufacturing. Advanced Electromagnetics 2019-03-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/977 10.7716/aem.v8i2.977 Advanced Electromagnetics; Vol. 8 No. 2 (2019); 39-47 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/977/419 Copyright (c) 2019 M. E. Carkaci, M. Secmen

oai:ojs.aempublisher.org:article/979 2021-03-10T13:06:55Z AEM:ART driver

Characterization of Transmission and Reflection of Ku Band Split Ring Resonator Reflectarray using Waveguide Method Naseer, N. Saka, B. Reflectarray antenna Split Ring resonator Ku band Waveguide method Transmission and Reflection In this paper, the analysis, design, and measurement of a split ring resonator reflectarray is presented. The 6 different designs of reflectarray are simulated to analyze the effect of splits position on resonance frequency. The SRR reflectarray which covered highest frequency bandwidth at Ku-band is fabricated and tested. In the fabrication, FR4 substrate is used. The S-parameter measurements of the fabricated reflectarray are performed by waveguide method. The obtained results have good reflection characteristics for a wide frequency range from 12 GHz to 16.5 GHz in Ku-band. The maximum value of reflection is achieved approximately at 15.3 GHz frequency Advanced Electromagnetics 2019-09-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/979 10.7716/aem.v8i3.979 Advanced Electromagnetics; Vol. 8 No. 2 (2019); 121-125 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/979/457 Copyright (c) 2019 N. Naseer, B. Saka

oai:ojs.aempublisher.org:article/980 2021-03-10T13:07:20Z AEM:ART driver

Wideband Microstrip Dipole Antenna Design for WLAN/WiMAX Applications Sondas, A. Microstrip Dipole Antenna wideband antenna WLAN/WiMAX Applications Recently, microstrip antennas are preferred in all areas of wireless communication, due to their advantages such as low volume coverage, light weight, surface compatibility, high cost requirements and easy production etc. The main disadvantage of these antennas is their narrow band performance (~11%). In the literature, there are some wideband microstrip antenna designs. These broadband characteristics are obtained by changing the antenna geometry or by adding new parasitic patches to the antenna elements. In this study, a classical wideband microstrip dipole antenna (MDA) design which can be used in WLAN/WiMAX applications (covering the bands 2.4–2.5 GHz and 2.5–3.5 GHz) is introduced. The proposed antenna has a pair of twisted strip which are placed asymmetrically near the feed of the dipole element with a length of 52 mm (~λ/2). Also a pair of square loop elements is placed on a sublayer. The proposed MDA has a resonance between 2.06-3.72 GHz with a bandwidth of 57%. The antenna has a directive radiation pattern with a gain of 6.49-3.98 dBi. Advanced Electromagnetics 2019-03-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/980 10.7716/aem.v8i2.980 Advanced Electromagnetics; Vol. 8 No. 2 (2019); 59-62 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/980/423 Copyright (c) 2019 A. Sondas

oai:ojs.aempublisher.org:article/981 2021-03-10T13:07:03Z AEM:ART driver

Analysis of Current Distributions and Radar Cross Sections of Line Source Scattering from Impedance Strip by Fractional Derivative Method Karacuha, K. Veliyev, E. I. Tabatadze, V. Karaçuha, E. fractional derivative method analytical method in electromagnetics electromagnetic wave scattering diffraction strip fractional boundary conditions In this paper, we have studied the analysis of current distributions and radar cross sections of line source scattering from impedance strip. The problem was solved with fractional derivative method previously. Here, the specific case of fractional derivative method is investigated. The problem under consideration on the basis of various methods is studied well, however, they are mainly done by numerical methods. The fractional derivative method, allows an analytical solution in a specific situation. This method allows to obtain analytical solution of impedance strip for a special case which is fractional order  is equal to 0.5. When fractional order is 0.5, there is an analytical solution which is explained and current distribution, radar cross section and near field patterns are given in this paper. Here, as a first time, current distribution, bi-static radar cross section and near field for the upper and lower part of the strip are studied. Advanced Electromagnetics 2019-06-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/981 10.7716/aem.v8i2.981 Advanced Electromagnetics; Vol. 8 No. 2 (2019); 108-113 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/981/444 Copyright (c) 2019 K. Karacuha, E. I. Veliyev, V. Tabatadze, E. Karaçuha

oai:ojs.aempublisher.org:article/983 2021-03-10T13:07:16Z AEM:ART driver

Design of a Polarization-Independent Dual-Band Electromagnetically Induced Transparency-Like Metamaterial Demirkap, O. Bagci, F. Yilmaz, A. E. Akaoglu, B. metamaterial polarization independent delay-bandwidth product slow light In this study, the classical analog of single and dual-band electromagnetically induced transparency is demonstrated with a four-fold symmetric metamaterial consisting of a Minkowski fractal ring resonator surrounded by a square ring resonator. The proposed metamaterials show high transmission ratios at the polarization independent resonances, as confirmed by the applied two different numerical methods. Delay-bandwidth products are found to be 0.34 and 0.61 at the resonances of the dual-band metamaterial. The peak frequencies and transmission ratios maintain also for oblique angle of incidences. These features of the proposed metamaterials are promising for single and multi-band filtering applications as well as for slow light and sensing devices. Advanced Electromagnetics 2019-03-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/983 10.7716/aem.v8i2.983 Advanced Electromagnetics; Vol. 8 No. 2 (2019); 63-70 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/983/427 Copyright (c) 2019 O. Demirkap, F. Bagci, A. E. Yilmaz, B. Akaoglu

oai:ojs.aempublisher.org:article/985 2021-03-10T13:07:12Z AEM:ART driver

Wavelet Based Denoising of the Simulated Chest Wall Motion Detected by SFCW Radar Acar, Y. E. Seflek, I. Yaldız, E. SFCW Vital signs wavelet denoisng respiration rate Low power and compact radars have emerged with the development of electronic technology. This has enabled the use of radars in indoor environments and the realization of many applications. The detection, tracking and classification of human movements by radar are among the remarkable applications. Contactless detection of human vital signs improves the quality of life of patients being kept under observation and facilitates the work of experts. In this study, it was simulated that the movement of the chest wall was modeled and detected by the SFCW radar. Gaussian, Rician and uniformly distributed random noise types were added to the modeled chest motion at different levels. The noisy signal obtained at the receiver is denoised with different mother wavelet functions and the performances of these functions are presented comparatively. Advanced Electromagnetics 2019-05-15 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/985 10.7716/aem.v8i2.985 Advanced Electromagnetics; Vol. 8 No. 2 (2019); 85-91 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/985/433 Copyright (c) 2019 Y. E. Acar, I. Seflek, E. Yaldız

oai:ojs.aempublisher.org:article/989 2021-03-10T13:07:23Z AEM:ART driver

Base Station Antenna with Enhanced Cross Polarization Discrimination Performance by Using Horizontal Meandered Dipole and Vertical Parasitic Elements Kadagan, O. M. Turkmen, C. Secmen, M. Base Station Antenna Dual-Polarized Antenna Cross-Polarization discrimination This study is related with the design of a ± 45° dual polarized base station antenna with improved cross-polarization discrimination (XPD) values. Parasitic elements are added to antenna design formed by orthogonal two compact meandered dipole above ground plane. The antenna designed with CST Microwave Studio program has VSWR ≤ 2 within 1.71-2.69 GHz frequency band, which covers GSM 1800/3G/LTE bands. The antenna has minimum of 0 dBi gain in the beamwidth of 120° ( 60°) at azimuth plane (ϕ = 0°) along the band, and XPD values being minimum of 2 dB at 1.71-2.4 GHz for  60° without parasitic elements are improved to 10 dB with parasitic elements. This design initially had two horizontal straight monopoles on the ground plane perpendicular to each other. Afterwards, antenna with microstrip balun feed applied but the XPD values were not appropriate to expected results. Because of that, by using image theory, vertical parasitic elements were added to get appropriate XPD values. Later, meandered structure used to make antenna smaller. Finally, according to base station applications, antenna frequencies optimized to 1.71 GHz and 2.69 GHz. The designed and optimized antenna produced and measured in laboratory environment. Return losses for port 1 and port 2 are measured above the 10 dB and isolation between the port 1 and port 2 are measured above the 20 dB. In addition, the maximum gain values are measured between 3 dB and 7 dB in 1.71 GHz and 2.69 GHz frequency band.  Finally, XPD values are measured more than 10 dB in bandwidth. Advanced Electromagnetics 2019-03-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/989 10.7716/aem.v8i2.989 Advanced Electromagnetics; Vol. 8 No. 2 (2019); 28-38 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/989/420 Copyright (c) 2019 O. M. Kadagan, C. Turkmen, M. Secmen

oai:ojs.aempublisher.org:article/990 2021-03-10T13:07:21Z AEM:ART driver

An Inverse Scattering Approach Based on Inhomogeneous Medium Green's Functions for Microwave Imaging of Brain Strokes Konakyeri Arıcı, E. Yapar, A. Microwave Imaging Brain Stroke Electromagnetic Scattering Inhomogeneous Media In this study, an inverse scattering approach is investigated for the detection and imaging of an abnormal structure (a bleeding or a stroke) inside the human brain. The method is mainly based on the solution of an integral equation whose kernel is the Green’s function of the inhomogeneous medium (corresponding to a human head model) which is obtained by a numerical approach based on Method of Moments (MoM). In this context, an inverse scattering problem related to the difference of healthy and unhealthy brain models is formulated and a difference function is obtained which indicates the region where the anomaly is located by solving this inverse problem. In order to reduce the reflection effects caused by the electromagnetic differences between the free space and the brain, a matching medium is used as the background space. Advanced Electromagnetics 2019-03-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/990 10.7716/aem.v8i2.990 Advanced Electromagnetics; Vol. 8 No. 2 (2019); 53-58 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/990/422 Copyright (c) 2019 E. Konakyeri Arıcı, A. Yapar

oai:ojs.aempublisher.org:article/991 2021-03-10T13:07:21Z AEM:ART driver

A Low Profile Wideband Log Periodic Microstrip Antenna Design for C-Band Applications Yerlikaya, M. Gültekin, S. S. Uzer, D. Microstrip antennas log periodic antennas wideband C-band In this study, a wideband low profile microstrip antenna design for C-band applications is presented. The proposed antenna consists of a monopol log periodic patch in the equilateral triangular dimensions with the microstrip line fed and a rectangular ground plane. The antenna has 9×19.8 mm2 overall size, thickness of 1.6 mm and 4.3 dielectric constant. According to the simulation results, the proposed antenna has a very wide bandwidth while operating in the frequency band of 4.25-7.95 GHz and 5 GHz resonance frequency. The proposed antenna was also prototyped on FR4 substrate with the 0.02 tangent loss and the measurement results were quite similar by the simulated results. Advanced Electromagnetics 2019-03-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/991 10.7716/aem.v8i2.991 Advanced Electromagnetics; Vol. 8 No. 2 (2019); 48-52 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/991/421 Copyright (c) 2019 M. Yerlikaya, S. S. Gültekin, D. Uzer

oai:ojs.aempublisher.org:article/996 2021-03-10T13:07:24Z AEM:ART driver

Microstrip Antenna Design with Circular Patch for Skin Cancer Detection Top, R. Ünlü, Y. Gültekin, S. S. Uzer, D. Microstrip patch antenna skin cancer detection pathology Hfss Due to the many advantages of microstrip patch antennas, nowadays, microstrip patch antennas are mostly preferred in biomedical areas. This study aims two antenna structures, as both transceiver and receiver, have same dimensions are designed to produce solution of the difficulties in pathology. For antennas with an operating frequency of 2.45 GHz, FR-4 substrate material with a value of 4.4 dielectrics is used. A model has been prepared to detect the presence of skin cancer with the designed antennas. The model is a method of determining E-field and scattering parameters differences between two antennas of cancerous and normal tissue specimens placed on the glass slides. The same antennas and experimental setup were prepared with the normal and cancerous structure of the skin tissue prepared by pathologists. Thus, scattering parameters are measured and their differences are determined. It has been shown that cancerous tissue can be determined with different values obtained as a result. Ansys HFSS program is used for designs and simulations. Advanced Electromagnetics 2019-03-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/996 10.7716/aem.v8i2.996 Advanced Electromagnetics; Vol. 8 No. 2 (2019); 71-76 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/996/428 Copyright (c) 2019 R. Top, Y. Ünlü, S. S. Gültekin, D. Uzer

oai:ojs.aempublisher.org:article/997 2021-03-10T13:06:51Z AEM:ART driver

Application of the Shifted Frequency Internal Equivalence to Two Dimensional Lossy Objects Aydemir, B. Köksal, A. Conductivity scattering problem Shifted Frequency Internal Equivalence Method of Moments Lossy Media Performance of a new method, Shifted Frequency Internal Equivalence (SFIE) is studied in the analysis of scattering from two dimensional lossy objects. This method finds the solution of a wideband scattering problem faster than classical approaches.By introducing conductivity, loss shows itself as imaginary electrical permittivity. Changing conductivity also changes the distribution of electromagnetic waves and modifies RCS plots. In this study homogeneous and inhomogeneous conductive media are investigated to widen the usage of SFIE method. By increasing conductivity skin effect phenomenon is observed, electrical dimensions are decreased and RCS plots are flattened as expected.Numerical results obtained by SFIE are compared to the ones obtained by Method of Moments and the differences are shown. Advanced Electromagnetics 2019-09-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/997 10.7716/aem.v8i2.997 Advanced Electromagnetics; Vol. 8 No. 2 (2019); 126-133 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/997/458 Copyright (c) 2019 B. Aydemir, A. Köksal

oai:ojs.aempublisher.org:article/998 2021-03-10T13:07:03Z AEM:ART driver

The Effect of Error Propagation on the Performance of Polar Codes Utilizing Successive Cancellation Decoding Algorithm Gazi, O. Andi, A. A. Polar Codes Successive Cancellation Decoding Algorithm Error Propagation  In this paper, we discuss and analyze the effect of error propagation on the performance polar codes decoded using the successive cancellation algorithm. We show that error propagation due to erroneous bit decision is a catastrophic issue for the successive cancellation decoding of polar codes. Even a wrong decision on a single bit may cause an abundance of successor bits to be wrongly decoded. Furthermore, we observe that the performance of polar codes is significantly improved if even single bit errors are detected and corrected before the decoding of successor bits. Advanced Electromagnetics 2019-06-10 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://www.aemjournal.org/index.php/AEM/article/view/998 10.7716/aem.v8i2.998 Advanced Electromagnetics; Vol. 8 No. 2 (2019); 114-120 2119-0275 eng https://www.aemjournal.org/index.php/AEM/article/view/998/445 Copyright (c) 2019 O. Gazi, A. A. Andi