Mutual-coupling suppression for 60 GHz MIMO antenna using metamaterials

This paper presents a unique approach to reduce the mutual coupling between two dielectric resonator antennas working at 60 GHz. To implement that, an array of metamaterial inclusion is employed between the two antennas. Proposed unit-cell is comprised of a modified shape of CSRR structure which has a large stop-band in the frequency range of 57-64 GHz. Applying array of metamaterials between DRAs can provide isolation of -45 dB at 60 GHz.