Wideband Circularly Polarized Fabry-Perot Antenna [Antenna Applications Corner]

Fan Qin*, Steven Gao, Gao Wei, Qi Luo, Chunxu Mao, Chao Gu, Jiadong Xu, Jianzhou Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


A broadband and high-gain, circularly polarized Fabry-Perot (CPFP) antenna is presented in this article. This antenna employs a two-layer partially reflective surface (PRS) with positive reflective phase gradient, which can improve the 3-dB gain bandwidth of Fabry-Perot (FP) antennas effectively. To generate a circularly polarized (CP) wave, a wideband CP microstrip patch is designed to serve as the feeding source. To validate this concept, an antenna prototype at X band is fabricated. The measurement results show that this antenna achieves a 3-dB gain bandwidth of 28.3% from 8.8 to 11.7 GHz with the peak gain of 14.7 dBi. Within this frequency range, the axial ratio (AR) is below 3 dB and the reflection coefficient is lower than -10 dB.

Original languageEnglish
Pages (from-to)127-135
Number of pages9
JournalIEEE Antennas and Propagation Magazine
Issue number5
Publication statusPublished - Oct 2015


  • Antenna measurements
  • Bandwidth
  • Broadband antennas
  • Broadband communication
  • Fabry-Perot
  • Reflector antennas

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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