Advanced Electromagnetics https://www.aemjournal.org/index.php/AEM <div class="hometabscontainer"> <div style="float: left;"> <table> <tbody> <tr> <td align="left" valign="top"> <p><a href="/images/aem_cover_new.png"><img class="img-responsive" style="border: 0px;" src="/images/aem_cover_mini_new.png" alt="" width="150"></a></p> <p style="text-align: center;"><strong style="text-align: center;">ISSN: 2119-0275</strong></p> </td> </tr> </tbody> </table> </div> <div><strong><br>Advanced Electromagnetics</strong>&nbsp; is a peer-reviewed open access journal that publishes original research articles as well as review articles in all areas of electromagnetics. <p>Additionally, through its unique <em>from-Conference-to-Journal-Publication </em>concept, <strong>Advanced Electromagnetics</strong>&nbsp;offers a rare opportunity for authors to submit papers to one of its partner conferences and then be considered for journal publication. With its multi-layered review process, <strong>Advanced Electromagnetics</strong>&nbsp;helps authors prepare, improve, and timely publish their research papers.</p> <p>Publication in this journal <strong>is totally free</strong>. There are no article submission charges, no article processing charges and no publication fees.</p> <p>&nbsp;</p> </div> <p><img class="img-responsive" src="/images/indexing.jpg" alt=""></p> <h3><span style="color: #336699;">Scopus rating (2016) for Advanced Electromagnetics</span></h3> <p><img class="img-responsive" src="/images/aem-scopus.png" alt="" width="100%"></p> </div> en-US <p>Authors who publish with this journal agree to the following terms:</p><ol><li style="text-align: justify;">Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a <a target="_blank">Creative Commons Attribution License</a> that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.</li><li style="text-align: justify;">Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.</li><li style="text-align: justify;">Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See <a target="_blank">The Effect of Open Access</a>).</li></ol> contact@aemjournal.org (AEM Editorial Team) contact@aemjournal.org (AEM Support) Thu, 01 Mar 2018 08:03:57 -0500 OJS 3.1.0.0 http://blogs.law.harvard.edu/tech/rss 60 Plasmonic coupling in Au, Ag and Al nanosphere homo-dimers for sensing and SERS https://www.aemjournal.org/index.php/AEM/article/view/563 <p>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&gt;Al&gt;Au. Hence, the use of plasmonic material towards the refractive index sensing applications is useful in this order.&nbsp; 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 &nbsp;have been theoretically predicted in DUV-UV-visible region which can be used to strongly enhance the Raman scattering of molecules.</p> J. Katyal ##submission.copyrightStatement## https://www.aemjournal.org/index.php/AEM/article/view/563 Wed, 14 Mar 2018 08:45:03 -0400 Radar Cross Section Reduction of Low Profile Fabry-Perot Resonator Antenna Using Checker Board Artificial Magnetic Conductor https://www.aemjournal.org/index.php/AEM/article/view/686 <p>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.</p> V. A. Libi Mol, C. K. Aanandan ##submission.copyrightStatement## https://www.aemjournal.org/index.php/AEM/article/view/686 Sat, 03 Mar 2018 05:34:03 -0500 Compact Uniplanar Multi Feed Multi Band ACS Monopole Antenna Loaded With Multiple Radiating Branches for Portable Wireless Devices https://www.aemjournal.org/index.php/AEM/article/view/661 <p>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.</p> P. N. Vummadisetty, A. Kumar ##submission.copyrightStatement## https://www.aemjournal.org/index.php/AEM/article/view/661 Fri, 02 Mar 2018 13:40:51 -0500 Tri-band MIMO Antenna for WLAN, WiMAX and Defence System & Radio Astronomy Applications https://www.aemjournal.org/index.php/AEM/article/view/656 <p>In this paper, an efficacious and impermeable undeviating MIMO consist of 70 x 50 x 0.4 mm3 is used for WLAN, defence system &amp; 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 &amp; radio astronomy applications with |S11|&lt; -10 dB and mutual coupling |S12|&lt; -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.</p> K. B. V. Babu, B. Anuradha ##submission.copyrightStatement## https://www.aemjournal.org/index.php/AEM/article/view/656 Fri, 02 Mar 2018 13:01:51 -0500 Design of Compact Broadband Omni directional Canonical Sleeve Antenna covering 500-3600 MHz https://www.aemjournal.org/index.php/AEM/article/view/654 <p>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 &lt;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.</p> C. S. Ram, D. Vakula, M. Chakravarthy ##submission.copyrightStatement## https://www.aemjournal.org/index.php/AEM/article/view/654 Fri, 02 Mar 2018 02:21:33 -0500 A Compact Broad-band UHF RFID Tag Loaded with Triangular SRR Arrays https://www.aemjournal.org/index.php/AEM/article/view/622 <p class="BodyTextKeep" style="margin-right: 2.15pt; page-break-after: auto;"><span style="font-size: 10.0pt;">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.</span></p> A. K. K. John, T. Mathew ##submission.copyrightStatement## https://www.aemjournal.org/index.php/AEM/article/view/622 Thu, 01 Mar 2018 17:29:47 -0500 A Triple-band Suspended Microstrip Antenna with Symmetrical USlots for WLAN/WiMax Applications https://www.aemjournal.org/index.php/AEM/article/view/608 <p>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.</p> S. B. Behera, D. Barad, S. Behera ##submission.copyrightStatement## https://www.aemjournal.org/index.php/AEM/article/view/608 Thu, 01 Mar 2018 16:07:12 -0500 Bandwidth Enhanced MIMO antenna for LTE bands using Split Ring Resonators and Stubs https://www.aemjournal.org/index.php/AEM/article/view/606 <p>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.</p> C. J. Malathi, D. Thiripurasundari ##submission.copyrightStatement## https://www.aemjournal.org/index.php/AEM/article/view/606 Thu, 01 Mar 2018 15:16:03 -0500 Crossover Frequency and Transmission-Line Matrix Formalism of Electromagnetic Shielding Properties of Laminated Conductive Sheets https://www.aemjournal.org/index.php/AEM/article/view/566 <p class="Abstract" style="text-indent: 0cm; margin: 12.0pt 0cm 18.0pt 0cm;"><span lang="EN-US" style="font-size: 10.0pt; font-weight: normal;">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).</span></p> S. M. Benhamou, M. Hamouni, F. Ould-Kaddour ##submission.copyrightStatement## https://www.aemjournal.org/index.php/AEM/article/view/566 Thu, 01 Mar 2018 14:53:12 -0500 Two-layered Dual-band Perfect Metamaterial Absorber at K band Frequency https://www.aemjournal.org/index.php/AEM/article/view/547 <p class="BodyTextKeep"><span lang="EN-US">This paper presents a study of a novel absorber structure based on two-dielectric-layers, two perfect absorption frequency bands at K band (f<sub>1</sub> = 26.5 GHz and f<sub>2</sub> = 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.&nbsp;</span></p> M. C. Tran, T. T. H. Phuong ##submission.copyrightStatement## https://www.aemjournal.org/index.php/AEM/article/view/547 Thu, 01 Mar 2018 13:36:47 -0500