Design of square-ring microstrip antenna for circular polarisation
- 22 January 2004
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 40 (2) , 93-95
- https://doi.org/10.1049/el:20040094
Abstract
The design of a square-ring microstrip antenna with circular polarisation (CP) is presented. To compact the antenna size and overcome the high impedance problem, the CP antenna is excited by a coupling strip located inside the square-ring patch. Several prototypes of the square-ring CP antennas with various substrate thickness (0.013–0.09λ0) have been constructed and studied experimentally, and their coupling-strip designs and CP performance are described.Keywords
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