Dual Band Pattern Reconfigurable MIMO Antenna System Design for 5G Wireless Applications

This paper presents a dual-band pattern reconfigurable Multiple Input Multiple Output 2×2 antenna system design for 5G wireless communications systems. The proposed system operates at central frequencies of 2.6 GHz of 2.5-2.69 GHz band (Low Band (LB)) and 3.61 GHz of 3.4 - 3.8 GHz band (High Band (HB)). The proposed technique of doing pattern reconfigurability in each band is the use of standard quadrature 3dB coupler. This method allows booth to make pattern reconfigurability and decoupling excitation ports of the antenna system. Simulated and measured scattering parameters are presented in this paper. The proposed MIMO antenna system has a return loss better than - 10 dB, more than 80 percent efficiency in each band and achieves a good gain.