Wideband 4-Port MIMO Antenna Array for 5G Millimeter-Wave Mobile Device Terminals

Abstract

A multiple-input multiple-output (MIMO) antenna system is proposed for fifth-generation (5G) millimeter-wave (mm-wave) mobile communications. The proposed design provides a wide bandwidth at the mm-wave frequency of 24 GHz to 40 GHz (S11 ≤ -10 dB) with high isolation (S ₁₂ > 40 dB) that achieved by a T-shaped radiating patch with a slot-based on the ground plane. An integrated four-element MIMO antenna has an overall size of 150×75×0.2 mm ³ . Moreover, the proposed MIMO has been investigated for the performance diversity, in terms of the envelope correlation coefficient and diversity gain, which has a good agreement that appropriates for mobile terminals applications.