Design & Simulation of Low Profile Wide Band Circularly Polarized Patch Antenna

Abstract

A low profile wideband circularly polarized microstrip patch antenna is studied using a square periodic parasitic element. The proposed antenna operates on C-band frequency for the application of satellite communications transmissions or reception, wireless fidelity devices, some cordless telephones as well as surveillance and weather radar systems. Simulated results are evaluated in terms of axial ratio bandwidth, VSWR bandwidth, and radiation pattern. The proposed antenna is having wide impedance bandwidth and axial ratio bandwidth of the order of 32.6% and 25.42% respectively. The gain of the antenna is better than 5dBic is achieved over the wide frequency band of 1.2 GHz (5.15 to 6.30 GHz). Simulation, optimization, and parametric analysis of antenna has been carried out using ANSYS's High Frequency Structure Simulator (HFSS) full wave E.M. tool.