A Miniaturized High Gain 4-Port MIMO Antenna Configuration for mm-Wave 5G Applications

This paper presents a small 4-Port Multiple Input Multiple Output (MIMO) antenna system. DGS structures are utilized along with the main radiators to achieve the desired performance. Through simulation, we demonstrate that the proposed design achieves operating impedance bandwidth of 3.49GHz, spanning from 27GHz to 30.49GHz, while maintaining a minimum port isolation of -18dB at 28GHz. Within this functional bandwidth, the antenna attains a peak gain of 7.01dBi at 27GHz and 28GHz, making it suitable for handheld 5Gmm-wave applications.