MIMO Monopole Antenna Design with Improved Isolation for 5G WiFi Applications

5G technology can handle over thousand times more mobile traffic than previous mobile communication networks [1-3]. The evolution from 4G to 5G is mainly driven by the growing need for higher data rate communications in different applications such as high-quality video streaming [4-8]. The fifth-generation wireless fidelity (5G Wi-Fi) systems become very popular in the wireless communications. The operating frequency band of 5G WiFi is from 5.15 GHz to 5.875 GHz which provides highspeed and convenient wireless access [9-10]. In the modern wireless communications for reduced multipath fading and increased capacity, multiple-input-multiple-output (MIMO) systems is becoming a key part of wireless networks [1112].Besides having small-size, the MIMO antenna is preferred to be low cost, easy to fabricate [1315]. Microstrip monopole antennas have received owing their attractive features such as low-profile, low-cost, easy of fabrication, and omnidirectional radiation patterns [16-20].