Evaluation of Decoupling Methods for 2D DRA Antenna Array for Millimeter Wave Applications

In this paper, the evaluation results of three decoupling methods for Dielectric Resonator Antenna DRA are presented for a 2 x 2 element array operating between 27.5 GHz and 28.35 GHz for 5G applications. This methods consist on adding vias and metallic strips to a DRA MIMO antenna. The objective of this paper is to find out the method presents the lowest coupling, for a bidimensional array DRA. A 12 dB of improvement in isolation is obtained for the neighboring element in the H-plane and a 19 dB for the neighboring element on the E-plane. Simulation results of isolation, reflection coefficient, distribution of E-field and current density are presented.