Compact wideband MIMO antenna for 5G communication

In this paper, we propose a compact wideband antenna. The operation band of the antenna covers from 3 GHz to 30 GHz with dimensions of 25 mm× 25 mm. The measured antenna S-parameters are in good agreement with the simulated ones. Furthermore, based on the proposed wideband antenna, a two-element multiple-input-multiple-output (MIMO) antenna with high isolation is developed due to its orthogonal polarization directions. Due to the advantages such as wide bandwidth, compact structure, and high isolation, this MIMO antenna is suitable for the 5th generation (5G) communication.