Triple Band MIMO Antenna System for 5G Mobile Terminals

A 4-antenna array for multiple-input multiple-output (MIMO) applications in future fifth generation (5G) mobile terminals is presented in this paper. The antenna array consists of four triple band antennas which can cover 5G new radio (NR) including n77 (3.3-4.2GHz) and n79 (4.4-5GHz), and 5GHz-wireless wide area network (WLAN) operation in 5.15-5.85GHz. The proposed antenna array was fabricated and measured. The measured total efficiency over 60% and isolation better than 14dB between each port were obtained. Envelope correlation coefficient (ECC) and channel capacity (CC) were also analyzed to evaluate the antenna performance.