A Broadband Circularly Polarized Microstrip Patch Antenna for X-Band Applications

Abstract

This paper presents a broadband circularly polarized microstrip patch antenna. The proposed antenna is designed using an octagonal patch, finite ground plane with L shaped slot and two L shaped strips placed orthogonal to each other. By utilising the strips, Broadband, Axial Ratio bandwidth (ARBW) is achieved. From simulated results, impedance bandwidth (-10 dB) is 5.8 GHz (9.8 GHz–15.6 GHz) and AR bandwidth (3 dB) of the antenna is 7.3 GHz (8.7 GHz– 16 GHz). The antenna is proposed with a simple structure and broadband circularly polarized, which is used widely for X-Band applications.