Vol. 83

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2019-08-07

Single-Fed High-Gain Circularly Polarized Microstrip Antenna

By Qing-Qing Chen, Jian-Ying Li, Guang-Wei Yang, and Yu-Xin Ding
Progress In Electromagnetics Research M, Vol. 83, 151-159, 2019
doi:10.2528/PIERM19052002

Abstract

In this paper, a single-fed high-gain circularly polarized microstrip antenna is proposed. The circular polarization is obtained by two unequal-length arc-shaped radiation patches, which excites two orthogonal linearly polarized modes with a 90° phase difference. The antenna is excited by coaxial feed. The proposed circularly polarized antenna consists of two arc-shaped radiation patches and a ground plane, which has a simple structure and a higher gain than 10.0 dB. The antenna is fabricated and measured to verify the design. The measured results are in good agreements with the simulated ones. The measured results show that the impendenceb and width (IBW) for S11<-10 dB is 16.7% (3.78-4.47 GHz), and the axial-ratio bandwidth (ARBW) for AR<3 dB is 3.6% (4.09-4.24 GHz). Further, the gain from 4.09 to 4.24 GHz is higher than 10.0 dBi. The antenna radiation pattern performs well over the whole band, and the peak gain can reach 10.67 dBi at 4.11 GHz. It is a good candidate for advanced wireless communication systems.

Citation


Qing-Qing Chen, Jian-Ying Li, Guang-Wei Yang, and Yu-Xin Ding, "Single-Fed High-Gain Circularly Polarized Microstrip Antenna," Progress In Electromagnetics Research M, Vol. 83, 151-159, 2019.
doi:10.2528/PIERM19052002
http://jpier.org/PIERM/pier.php?paper=19052002

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