Recent Designs to Achieving Wideband MIMO Antenna for 5G NR Sub-6GHz Smartphone Applications

Recently, many wideband MIMO antenna designs for smartphone applications have been reported to cover the 5G NR (new radio) band n77 (3300-4200 MHz), n78 (3300-3800 MHz), and n79 (4400-5000 MHz), in addition to WLAN 5GHz band (5150-5825 MHz). In this Invited Talk, the various design techniques to attain wide impedance bandwidth and good isolation will be addressed explicitly. Furthermore, two novel wide bandwidth 8-antenna array for 5G smartphone that can exhibit good 10-dB impedance bandwidth covering the 5G NR band n77/78/79 are presented and discussed as well.