A full-wave analysis based on the moment method in the spectral domain is used to perform an analysis of the rectangular (quasisquare) patch antenna. The conventional rectangular patch shape excited by a coaxial cable at a point favoring the resonance of only one patch edge results in a very narrow bandwidth structure that radiates linear polarized waves. In this work, the rectangular shape replaced by a quasisquare patch excited on a point of its diagonal line is analyzed A broadband structure radiating almost circular polarized waves is obtained. (C) 2000 John Wiley & Sons, Inc.
Azrar, A., Aksas, R., & Vander Vorst, A. (2000). Full-wave analysis of the broadband circular polarization microstrip patch antenna. Microwave & Optical Technology Letters, 24(2), 99-102. https://doi.org/10.1002/(SICI)1098-2760(20000120)24:2<99::AID-MOP6>3.0.CO;2-T (Original work published 2000)