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Progress In Electromagnetics Research Letters
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OPTIMIZATION OF THREE-DIMENTIONAL (3-D) GROUND STRUCTURE FOR IMPROVED CIRCULARLY POLARIZED MICROSTRIP ANTENNA BEAMWIDTH

By Y.-H. Huang, S.-G. Zhou, J. Ma, and Q.-Z. Liu

Full Article PDF (277 KB)

Abstract:
A novel circularly polarised (CP), single-fed widebeam microstrip antenna is presented. The antenna consists of a corner-truncated square patch and a three dimensional circular ground structure. Simulated and measured results show that, owing to the ground structure, the 3 dB beamwidth of the CP radiation can reach more than 165o, which is about 85o, greater than that of a corresponding regular microstrip antenna. It is also shown that experimental results were in good agreement with the simulated performance. Details of the proposed 3-D circular ground structure are described, and the effects of various dimensions of the proposed ground structure on the beamwidth enhancement of CP radiation are studied.

Citation:
Y.-H. Huang, S.-G. Zhou, J. Ma, and Q.-Z. Liu, "Optimization of Three-Dimentional (3-D) Ground Structure for Improved Circularly Polarized Microstrip Antenna Beamwidth," Progress In Electromagnetics Research Letters, Vol. 10, 135-143, 2009.
doi:10.2528/PIERL09071103

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