文章基本信息

标题：Polarization-Diversity Cross-Shaped Patch Antenna for Satellite-DMB Systems
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作者：Lim, Jong-Hyuk ; Back, Gyu-Tae ; Yun, Tae-Yeoul 等
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：2010
卷号：32
期号：2
页码：312-318
DOI：10.4218/etrij.10.0109.0280
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：A small reconfigurable patch antenna is proposed to achieve polarization diversity for digital multimedia broadcasting systems at 2.6 GHz. To obtain polarization diversity, a pair of on-slit PIN diodes is inserted in each diagonal of a cross-shaped patch. Thus, four PIN-diodes on these slits are utilized to change the connection of the slits and thus achieve polarization. Bias circuits for the diodes are allocated in the cutting corner of the cross-shaped patch to minimize the antenna size. The antenna produces left-hand circular polarization, right-hand circular polarization, or linear polarization, depending on the PIN-diode status. Analysis of circular polarization operation is explicated. Measurements show a gain of about 1.5 dB, a cross polarization of about -20 dB, and an axial ratio of about 2.5 dB.
关键词：Axial ratio;circular polarization;DMB;patch antenna;polarization diversity;reconfigurable antenna