National Changhua University of Education Institutional Repository : Item 987654321/10984
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题名: Dual-frequency circularly-polarized microstrip antenna with switchable polarization sense
作者: Wu, Jia-Feng;Row, Jeen-Sheen;Wong, Kin-Lu
贡献者: 電機工程學系
关键词: Microstrip antenna;Dual-frequency operation;Switchable polarization
日期: 2008-08
上传时间: 2012-06-05T02:01:08Z
出版者: Wiley
摘要: A dual-frequency circularly-polarized (CP) microstrip antenna capable of switching polarization sense is presented. The antenna is fed by a microstrip line through aperture coupling. First, it is found that a CP mode can be excited when the radiating patch is square and an open-ring slot is used as the coupling aperture. Then, by truncating the radiating patch, another CP mode can be obtained. The two CP modes have reversed polarization senses, and their operating frequencies are different. For the proposed dual-frequency CP microstrip antenna, two prototypes with frequency ratios of 1.07 and 1.23 were constructed, and voltage-controlled diodes are employed to achieve the electrical switching between the two CP modes.
關聯: Microwave and Optical Technology Letters, 50(8): 2125-2128
显示于类别:[電機工程學系] 期刊論文

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