Analysis and optimized design of single feed circularly polarized microstrip antennas

作者：Priyanka Sharma, K.C. Gupta · 发表于：IRE Transactions on Antennas and Propagation · 年份：1983 · DOI：10.1109/tap.1983.1143162 · 被引用次数：599 · 研究领域：Antenna Design and Analysis、Microwave Engineering and Waveguides、Advanced Antenna and Metasurface Technologies

Analysis and optimized designs are presented of three types of single feed circularly polarized microstrip antennas, namely, a diagonal fed nearly square, a truncated-corners square and a square with a diagonal slot. The Green's function approach and the desegmentation methods are used. The resonant frequencies are calculated for two orthogonal modes which together yield circular polarization. Optimum feed locations are determined for the best impedance match to a50 \Omegacoaxial feed line. Axial-ratio bandwidths, voltage standing-wave ratio (VSWR) bandwidths and radiation patterns are evaluated and verified experimentally.