A high‐gain circularly polarized Fabry‐Perot antenna with chiral metamaterial‐based circular polarizer

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 compose...

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Bibliographic Details
Published in:Microwave and optical technology letters 2020-02, Vol.62 (2), p.906-911
Main Authors: Hu, Yan‐wen, Wang, Yu, Yan, Zhong‐ming, Zhou, Hong‐cheng
Format: Article
Language:English
Subjects:
antenna
chiral metamaterial
Circular polarization
Fabry‐Perot
high‐gain
Holes
Metamaterials
Microstrip antennas
partially reflecting surface
Polarizers
Reflectance
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Summary: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 S11 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.
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.32102