A High Gain Differential-Feed Stacked-Patch Antenna Based on SISL for 5G Millimeter-Wave Applications

Abstract

A high gain differential-feed stacked-patch antenna based on substrate integrated suspended line (SISL) is proposed in this paper. The antenna consists of five substrate layers with two internal air cavities. By etching slots on the driven patch and adding the stacked patch, the simulation results of the antenna can cover the operating band of 26.22-30.14 GHz. The realized gain of the operating band is within 10.76-12.52 dBi. The cross-polarization is less than −45 dBi, and the antenna efficiency is higher than 82 %.