Four-Port, Broadband, Compact Antenna for 5G Indoor Access and Content Distribution over WiFi

This paper presents a novel four-port, broadband, compact MIMO antenna operating in the sub-6GHz bands of future 5G systems and the 2.45GHz/5GHz WiFi bands. The radiating element topology is inspired from both the Annular Slot Antenna (ASA) and the printed wideband monopole. V-shaped slots are incorporated in the antenna ground for a better efficiency and higher in-plane radiation. The antenna is well matched in both 2.45GHz and 5GHz WiFi bands with a total efficiency of 39.6% in the first band and 60.7% in the second one. It is also well matched over the multiple potential 5G bands between 3.2GHz and 6GHz with a total efficiency varying from 34.1% to 66.2%. The antenna simulated, and measured results are presented and thoroughly analyzed.