Mutual coupling reduction using shorting posts in UWB MIMO antennas

A multiple input multiple output (MIMO) antenna consisting of two hybrid shaped monopoles for UWB applications is presented. In the proposed antenna, a pair of rectangular strips terminated with shorting posts is used to achieve isolation ≥ 20 dB over UWB. The variations in group delay and transfer-function response are within 1 ns and 13 dB respectively. The envelope correlation coefficient < 0.05 over 3.1–10.6 GHz indicate that the proposed antenna is suitable for UWB MIMO applications.

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