期刊论文详细信息
ETRI Journal
Polarization-Diversity Cross-Shaped PatchAntenna for Satellite-DMB Systems
关键词: reconfigurable antenna;    polarization diversity;    patch antenna;    DMB;    circular polarization;    Axial ratio;   
Others  :  1185970
DOI  :  10.4218/etrij.10.0109.0280
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【 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.

【 授权许可】

   

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【 参考文献 】
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