Compact Stair-Shaped MIMO Antenna for 27 GHz Applications

In this paper, a 2-port compact stair-shaped multi-input multi-output (MIMO) design antenna for a 27 GHz claim is reported. The design had a total dimension of 12 x 5.5 mm
²
and it contained 2 stair-shaped radiators. AT-shaped stub is used for the purpose of lowering the level of isolation between the MIMO's ports. HFSS software has been used to implement the MIMO antenna design and impedance bandwidth of 3.9 GHz from 25.5 GHz to 29.4 GHz, and the port isolation is more than 25 dB. MIMO's diversity features are good and the proposed MIMO antenna provides convincing evidence that mm-wave communications in the 5G generation could be possible.