5G technology is the latest technology in market for high data rate communication based applications. There are some problems like signal blocking and attenuation occur at very high data rate and become a problem for 5G communication. This problem can be solved by using MIMO based antennas. Microstrip patch antenna is used for high frequency antenna applications. Multiple array MIMO based microstrip patch antenna is very suitable for high data rate 5G applications. CST software is used for designing and simulation of the proposed MIMO antenna. The proposed work is 2x2 array of MIMO microstrip patch antenna with a tree shape patch and full ground, which is providing better bandwidth of 69 MHz at 3.5 GHz 5G frequency. It is also providing return loss of -24.1 dB which is better than previous work which has achieved return loss of -19dB only. Proposed antenna is very suitable for 5G applications including mobile communication, WLAN etc.

As per the advancement of wireless technologies, 5G will be the next break-through which will be capable to taking data rate in Gbps speed. But to sustain such higher bandwidth as well as reducing signal blocking at such high frequencies, MIMO antenna must be implemented. MIMO antenna is capable of high speed transmission with lesser interference. In this paper, Different MIMO antenna with slots and wideband antenna designs has been discussed. It is found that multi-Array MIMO antenna designs performs better at high bandwidth and show lesser attenuation.