期刊
ELECTRONICS LETTERS
卷 42, 期 24, 页码 1374-1376出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/el:20063065
关键词
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A circularly-polarised microstrip antenna capable of switching polarisation sense is presented. The proposed microstrip antenna has a circular radiating patch and is excited by an open-loop microstrip line through the coupling of a ring slot in the ground plane. Two ends of the open-loop microstrip line can be taken for the input ports to excite right-hand and left-hand circular polarisations, respectively A prototype using PIN diodes to electrically switch the input ports is implemented, and the measured results show the 3 dB axial ratio bandwidth of more than 10% can be obtained at the two polarisation senses.
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