Switchable Microstrip Antenna with Circular Polarization Diversity

Seongmin PYO  Jung-Woo BAIK  Young-Sik KIM  

Publication
IEICE TRANSACTIONS on Communications   Vol.E94-B   No.9   pp.2650-2652
Publication Date: 2011/09/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.2650
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antennas and Propagation
Keyword: 
switchable antenna,  microstrip antenna,  circular polarization,  polarization diversity,  

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Summary: 
In this letter, a novel design of a switchable microstrip antenna is proposed for circular polarization diversity. The proposed antenna has a simple construction of inner and outer corner-truncated radiating circular patches for switchable circular polarization. By controlling the state of two PIN diodes, left- and right-hand circular polarizations are easily alternated. The results of experiments show excellent switching radiation performances at the resonant frequency and good agreements with the simulated ones.