Abstract

Two-element ultra-wideband (UWB) multiple input and multiple output (MIMO) antennas are presented to obtain high isolation. The designed UWB-MIMO antennas are composed of two identical orthogonal antenna elements, and a defected ground structure with I-shaped slot and a pair of L-shaped stub are employed to get better isolation. Bandwidth of the proposed antennas range from 3.28 GHz-12 GHz. Also, the proposed antennas have isolations better than −18.6 dB. Moreover, an isolation of −20 dB is obtained within 3.73 GHz–10.26 GHz. The results show that the proposed UWB-MIMO antennas have wide bandwidth and high isolation performance.

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