Design and Performance Analysis of a Wideband MIMO Antenna Array for 5G Millimeter-Wave Applications

Abstract

Advances in fifth-generation (5G) networks have greatly increased the need for antennas that can effectively work in the millimeter-wave (mmWave) spectrum, especially in the 28 GHz band. Addressing the need for high data transmission rates, low latency, and strong spectrum usage, this paper outlines and tests a wideband 2×2 MIMO antenna array created for 5G mmWave applications. A compact patch structure combined with SIW feedlines allowed for antenna elements that result in low transmission loss, broad range of impedance, and little interaction between neighboring elements. The 16-element array is simulated using CST Microwave Studio, and the performance scores suggest that the −10 dB impedance bandwidth includes 26.5 GHz to 29.5 GHz and hence lies within the band designated for 28 GHz 5G use. The antenna shows a peak gain of 10.8 dBi and a high level of radiation efficiency across all the operating frequencies. The performance of MIMO can be measured by using ECC, DG, and TARC, all of which indicate strong isolation of signals and high signal diversity in the system. In conclusion, this study confirms that the MIMO antenna array is well-suited for use in the future wireless networks, helping provide strong, capable, and speedy wireless connectivity to people living in high-density cities.