This paper proposes a method for improving the isolation characteristic of multi-input multi-output (MIMO) antennas using a split ring resonator (SRR) array structure between the two radiating elements. The fabricated antenna satisfies the 10 ㏈ retu...
This paper proposes a method for improving the isolation characteristic of multi-input multi-output (MIMO) antennas using a split ring resonator (SRR) array structure between the two radiating elements. The fabricated antenna satisfies the 10 ㏈ return loss requirement in the Mobile-WiMAX frequency band from 3.4 ㎓ to 3.6 ㎓. The isolation between the two radiating elements is improved by approximately 20 ㏈ at the center frequency by inserting a SRR array structure. The measured peak gains of the two elements are 2.3 ㏈i and 2.4 ㏈i, respectively.