Dual Band MIMO Monopole Antenna System for 5G Laptops

This paper presents a dual-band multiple-input multiple-output(MIMO) monopole dual-antenna system for fifth-generation(5G) laptops. The dual-antenna unit is a $29 \times 2 \times 3$ mm $^{3}$ three-dimensional structure with two antennas of the same structure and size, consisting of a fed monopole and a shorted monopole. Dual antennas are arranged 4 mm apart, side by side, in the same direction, to form a dual antenna unit. This antenna system can cover 5G dual-band operation of 3300-3600MHz and 4800-5000MHz, and the measured antenna efficiencies can reach more than 40%, which is well suited for multiple antenna applications.