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A high‐gain circularly polarized Fabry‐Perot antenna with chiral metamaterial‐based circular polarizer
Author(s) -
Hu Yanwen,
Wang Yu,
Yan Zhongming,
Zhou Hongcheng
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32102
Subject(s) - polarizer , optics , axial ratio , circular polarization , metamaterial , reflection coefficient , antenna gain , turnstile antenna , fabry–pérot interferometer , physics , microstrip antenna , metamaterial antenna , antenna (radio) , materials science , microstrip , antenna factor , engineering , telecommunications , birefringence , wavelength
A high‐gain circularly polarized Fabry‐Perot (FP) antenna with chiral metamaterial (CMM)‐based circular polarizer is presented in this paper. It consists of two cavities. One is a U‐shaped slot microstrip antenna with a partially reflecting surface (PRS), acting as an FP cavity. The other is composed of PRS and CMM plate which act as a circular polarizer. According to the experimental results, within the impedance bandwidth of 0.63 GHz from 8.71 to 9.34 GHz, the axial ratio and reflection coefficient S 11 of the antenna are less than 3 and −10 dB, respectively. At 9 GHz, the maximum gains of simulation and measurement are 18.5 and 18.3 dB, respectively. The measurement results are according well with the simulation results. Similar methods can be extended to other bands to design high‐gain circularly polarized antennas.