Mutual Coupling Reduction for A Miniaturized MIMO Antenna at 6G Millimeter-Wave Band

A miniaturized, low profile and low mutual coupling multiple-input multiple-output (MIMO) antenna is proposed for sixth generation (6G) wireless communication systems in this paper. The miniaturized MIMO antenna is composed of two radiating elements, which only has an area size of 18x11.6 mm(2) and a thickness of 0.7 mm. The characteristics of miniaturization and low profile are very beneficial for applications in the field of mobile communication devices. The designed MIMO antenna operates at 6.48-9.59 GHz which can cover the 6G millimeter-wave band. And during the whole operating band the isolation is higher than 21 dB. Radiation patterns and envelope correlation coefficient (ECC) value are also given to demonstrate its excellent performance.