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Improved Theory for a Singly Fed Circulary Polarized Microstrip Antenna

Yasuo SUZUKI, Taneaki CHIBA

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Summary :

An improved theory to obtain circularly polarized (CP) waves from a singly fed microstrip antenna is presented. This theory indicates that a singly fed circularly polarized (SFCP) microstrip antenna, in general, is able to produce CP waves at two different frequencies, which are just slightly separated. The two CP operating frequencies can be found through an iterative process. Furthermore, the optimum feed location loci can be determined numerically. Finally, the theoretical results for two kinds of SFCP antennas are compared with the experimental results. The agreement is quite good and the theory validity is confirmed.

Publication
IEICE TRANSACTIONS on transactions Vol.E68-E No.2 pp.76-82
Publication Date
1985/02/25
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Antenna and Propagation

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