Modified Planar Rectangular Antenna Array for Wideband 5G MIMO Applications

A modified planar rectangular antenna array design is presented for wideband 5G MIMO applications. The single element of the array comprises of a modified rectangular patch fed using a $50 \Omega$ microstrip feed line, and a partial ground plane with a rectangular notch. It is observed from simulation results that the proposed antenna offers wideband characteristics from 26.88 GHz to 61.17 GHz. Furthermore, a four-element MIMO array has been designed for its possible use in 5G enabled communication devices. It is demonstrated that the proposed MIMO antenna array provides high isolation between array elements without disturbing the return loss of an individual element.