A Broadband Microstrip MIMO Antenna for 5G mm-Wave Applications

In this paper, the authors present a 28 GHz broadband microstrip patch MIMO antenna for a 5G wireless communication system. The proposed antenna array has a central operating frequency of 28.01 GHz. The proposed antenna array is simulated on Rogers RT/Duroid5880 substrate with dielectric permittivity of 2.2. The design of the antenna array, the dimension, parameters, are simulated and optimized by using CST Studio Suite. The antenna array has a compact and robust structure with dimensions of 0.62 x 5.40 lambda o. From the simulation result, we observed that the studied antenna array has a return loss of -22.10 dB and an impedance bandwidth of 3.94 GHz. The proposed rectangular broadband microstrip patch MIMO antenna has achieved significantly improve radiation performance in terms of bandwidth and return loss.