Design of Dual-band Slot Antenna Array for 5G Sub-6GHz CPE

A dual-band slot antenna array operating in 5G sub-6GHz band with 8 × 8 multi-input multi-output (MIMO) is proposed. The impedance bandwidths through the operating bands can reach the 5G sub-6GHz bands bandwidth specification, respectively. The measured peak gains and antenna efficiencies can achieve to 2.5 / 3.0 dBi and 60 / 45 % in 3.5 / 4.9 GHz bands, respectively.