Ultra-Wideband MIMO Antennas: Latest Advances in Design and Technology

The exponential growth of digital platforms and the increasing user base in wireless communication has created a need for communication systems that can provide high data speeds, reliability, and strong transmission links. The limitations of single antenna systems have led to an increased focus on multiple-input multiple-output (MIMO) antennas in order to address the requirements of modern high-speed wireless systems. Nevertheless, the attainment of adequate isolation in compact 5G terminals presents certain obstacles. The primary objective of this review paper is to examine the fundamental aspects, performance metrics, and design methodologies pertaining to multiple-input multiple-output (MIMO) antennas. More specifically, the paper delves into the characteristics of dual-band, ultra-wideband (UWB), and circularly polarized antennas. The paper investigates several aspects of present MIMO antenna design procedures, including channel capacity loss (CCL), envelope correlation coefficient (ECC), gain, efficiency, and isolation approaches, in order to facilitate a comparative analysis. This research makes a valuable contribution to the progress of high-speed wireless communication systems by thoroughly understanding the merits and constraints of each strategy. The implementation of Multiple-Input Multiple-Output (MIMO) antennas shows potential for various wireless applications, encompassing portable devices, smart gadgets, automobiles, and wireless sensors.