Dual-band 5G millimeter-wave MIMO antenna array for mobile phone application

In this paper, a dual-band 5G millimeter-wave antenna array for 37–40 GHz mobile application is proposed. The proposed antenna has two resonances generated by a monopole branch and a loop branch. The two branches are located on the surface of a ceramic block, and the antenna is mounted on PCB. Possible locations of the MIMO antenna array in a mobile phone are studied and an optimized location for the MIMO antenna system is proposed.