Compact circularly polarized microstrip antenna with different geometries of ground plane

This paper describes the design and analysis of a compact Circularly polarized (CP) microstrip antennas for using a coaxial probe feed with different geometry cut on both patch and ground plane. The proposed compact CP design can have an operating frequency reduction of about 11.02%, and 23.7% respectively for two different designed as compared to the reference conventional corner-truncated square microstrip antenna of the same size without any slits on patch and ground plane. Simulation results with antenna design are presented and discussed.