A slot-based broadband single and MIMO antennas for 5G New Radio (5G NR) mobile applications are presented in this paper. The proposed MIMO antenna is investigated by loading two antennas into a low-cost material with the partial ground for sub-6GHz. Each antenna element is consisted of a hexagonal-shaped slot and is composed of a 50Ω microstrip feed line. The WLAN 5-GHz band and 5G NR Bands n77/n78/n79 are covered with good impedance matching. Besides, the mutual coupling between the adjacent elements is less than 15-dB whereas the desired antenna elements gains are 3.19 dBi and 3.09 dBi at 3.5 GHz 4.2 GHz respectively.
