Millimeter-wave Low-mutual-coupling MIMO Dielectric Resonator Antennas

A simple decoupling approach of suppressing mutual coupling between two millimeter-wave dielectric resonator antenna (DRA) elements using shorting vias is presented in this paper. The simulated results show that, the vias which are vertically added into the DRA elements, can provide an average isolation enhancement of 27 dB in the operating frequency band.