A Cylindrical Wideband Conformal Fractal Antenna for GPS Application

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R. Sahoo
D. Vakula


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.


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Sahoo, R., & Vakula, D. (2017). A Cylindrical Wideband Conformal Fractal Antenna for GPS Application. Advanced Electromagnetics, 6(3), 64-69. https://doi.org/10.7716/aem.v6i3.585
Research Articles


  1. Anon., Aeronautical satellites, Aircraft Engineering and Aerospace Technology 59 (3),2–4,1987.
    View Article

  2. Munson Re, Conformal microstrip antennas, Microw. J. 31 (3), 1988.

  3. L.Josefsson, P.Persson, Conformal Array Antenna Theory and Design, IEEE Press, 2006.
    View Article

  4. He Zhu; Xianling Liang; Sheng Ye; Ronghong Jin;Junping Geng, A Cylindrically Conformal Array With Enhanced Axial Radiation, IEEE Antennas and Wireless Propagation Letters,1653-1656, 2016.
    View Article

  5. Hua-Ming Chen,Yi-Fang Lin, Chien-Hung Chen, Chien-Yuan Pan, And You-Shiang Cai,"Miniature Folded Patch GPS Antenna for Vehicle Communication Devices, IEEE Transactions On Antennas And Propagation, Vol.63, NO.5, 2015.
    View Article

  6. M. M. Bilgic And K. Yegin," Modified Annular Ring Antenna for GPS and SDARS Automotive Applications, IEEE Antennas And Wireless Propagation Letters, Vol.15, 2016.

  7. Encheng Wang, Qiuping Liu," GPS Patch Antenna Loaded with Fractal EBG Structure Using Organic Magnetic Substrate, Progress In Electromagnetics Research Letters, Vol. 58, 23–28, 2016.
    View Article

  8. Zhang Xiangjun, Ma Xiaoping, Guan Xueyuan, "Design of Cylindrical Conformal Microstrip GPS Antenna Arrays, International Conference on Microwave Technology and Computational Electromagnetics, Beijing,p.105-108, 2009.

  9. Dholakiya, Hitesh L., and Dhaval A. Pujara. "Improving the bandwidth of a microstrip antenna with a circular‐shaped fractal slot." Microwave and Optical Technology Letters 55.4 (2013): 786-789.
    View Article

  10. Karmakar, Anirban, et al. "Complementary stacked patch antenna with fractal shape defect for wideband characteristics." Microwave and Optical Technology Letters 56.4 (2014): 944-947.
    View Article

  11. Mahatthanajatuphat, Chatree, et al. "A rhombic patch monopole antenna with modified Minkowski fractal geometry for UMTS, WLAN, and mobile WiMAX application." Progress In Electromagnetics Research 89 (2009): 57-74.

  12. Ataeiseresht, R., C. H. Ghobadi, and J. Nourinia. "A novel analysis of Minkowski fractal microstrip patch antenna." Journal of Electromagnetic Waves and Applications 20.8 (2006): 1115-1127.
    View Article

  13. Manafi, Sara, and Hai Deng. "Design of a small modified Minkowski fractal antenna for passive deep brain stimulation implants." International Journal of Antennas and Propagation 2014 (2014).
    View Article