Hight-Gain Circulary Polarised Patch Antenna Array At 28 GHz

Abstract

In this paper, a compact, high gain, and circularly polarized patch antenna array design is proposed. The proposed structure is destined for the 5G wireless communications systems operating at 28 GHz band. The proposed antenna structure uses a loaded dielectric hemisphere Lens to focalize electromagnetic energy and enhance the gain. Simulation results shows that the antenna design covers about 0.5 GHz of bandwidth $(\mathrm{S11} <-10 \ \mathrm{dB})$ while delivering high gain of 15.3 dBi and an axial-ratio bandwidth $(\mathrm{AR} < 3 \ \mathrm{dB})$ of 0.35 GHz.