A Miniaturized 14‐Element Self‐Decoupled Antenna Array for Enhanced 5G Channel Capacity in Terminals

Multiple‐input multiple‐output (MIMO) technology has garnered widespread attention due to its remarkable ability to significantly augment system channel capacity. With the objective of boosting the channel capacity for the fifth‐generation (5G) mobile communication, we propose a 5G terminal MIMO antenna with a compact structure and high isolation operating in 3.4–3.6 GHz. In order to achieve greater channel capacity while ensuring maximum isolation among MIMO elements, 14 miniaturized units utilizing self‐decoupling technology are positioned under the chassis model. This results in a significant decrease in mutual coupling, reaching a level of −13.5 dB, while simultaneously increasing the channel capacity to a level of 55.5–59 bps/Hz. Additionally, the feasibility of the proposed mobile terminal MIMO antenna is demonstrated through simulations involving human hand models, thereby confirming its practical application.