A Planar Multi-Antenna Design Supporting 3.4-4.2 GHz for 5G Smartphone Applications

Abstract

A MIMO antenna array with suitable features for 5G mobile phone applications is presented in this study. With 75×150×0.8 mm 3 FR-4 dielectric, two rows of tiny monopole antenna arrays are mounted on the right and left sides of the mainboard. A modified T-shaped resonator with discontinuous feeding and a protruded L-shaped strip make up the monopole element's schematic. The design parts have all been etched into the same layer of the ground. The proposed array is extremely compact and takes up very little space on the PCB plane. The presented MIMO smartphone antenna is designed to support the sub 6 GHz 5G network and provides a 3.4-4.2 GHz operation band. Also, due to the arrangement of the elements, it could operate as two sets of 1×4 phased arrays with high-gain and beam steerable radiation patterns. The MIMO performance, user-hand effect, and critical properties of the introduced monopole antenna array design are studied.