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A small frequency ratio dual-band circularly polarized microstrip antenna

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3 Author(s)
Wen Liao ; School of Electronic and Information Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, China ; Qing-Xin Chu ; Shu Du

A compact single-feed dual-band circularly polarized (CP) patch antenna with small frequency ratio is presented. The proposed antenna consists of a circular patch and a narrow annular-ring, which resonate at 1.70 GHz and 1.57 GHz for respectively. The annular-ring was involved to obtain dual band characteristic. The CP operation is achieved by an unequal cross-slot embedded in the circular patch. Simulated and measured results are presented and discussed.

Published in:

2009 Asia Pacific Microwave Conference

Date of Conference:

7-10 Dec. 2009