ETRI Journal | |
Design Method of a Circularly-Polarized Antenna Using Fabry-Pérot Cavity Structure | |
关键词: superstrate; circularly polarized; High gain; | |
Others : 1186127 DOI : 10.4218/etrij.11.0110.0267 |
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【 摘 要 】
A Fabry-Pérot cavity (FPC) antenna producing both high-gain and circularly-polarized (CP) behavior is proposed. To increase antenna gain and obtain CP characteristics, a superstrate composed of square patches with a pair of truncated corners is placed above the linearly polarized patch antenna with an approximately half-wavelength distance from the ground plane at the operating frequency. The proposed antenna has the advantages of high gain, a simple design, and an excellent boresight axial ratio over the operating frequency bandwidth. Moreover, used in an FPC antenna, the proposed superstrate converts a linear polarization produced by a patch antenna into a circular polarization. In addition, the cavity antenna produces left-hand circular-polarization and right-hand circular-polarization when a patch antenna inside the cavity generates x-direction and y-direction polarization, respectively. The measured and simulated results verify the performance of the antenna.
【 授权许可】
【 预 览 】
Files | Size | Format | View |
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20150520121243195.pdf | 1494KB | download |
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