8-port 5G massive MIMO in sub-6 ghz base station for LTE bands 43/46 application

Abstract

The 5G (fifth generation) communication system is the next major phase of mobile telecommunications standards beyond the current 4G, which means new antenna design for 5G base station and mobile station will be in great demand in the near future. At present, it is well known that the 2 x 2 Multiple-Input-Multiple-Output (MIMO) or 4 x 4 MIMO is mainly used in 4G Long-Term-Evolution (LTE) wireless communication. However, neither the 2 x 2 MIMO or 4 x 4 MIMO can meet the needs of 5G. So in order to meet the needs of 5G, this thesis proposes a 6 x 6 MIMO integrated into a base station for 5G massive MIMO to provide good diversity gain and multiplexing gain. This thesis proposes an 8-port antenna MIMO structure operating in the LTE band 43 (3600-3800MHz), and LTE band 46 (5150-5925 MHz) for 5G MIMO application in base station. The proposed MIMO antenna is composed of a novel dual-band antenna element that can cover both the 3600-3800 MHz (LTE bands 43) and 5150-5925 MHz (LTE band 46) for future 5G mobile station. The proposed antenna was designed, simulated and optimized using CST software. The performance was analyzed by means of the S parameters of the planar antenna. This antenna achieved a high gain, its return loss well below -10 dB, the isolation between antennas around -20 dB, and a good total radiation efficiency.