Integrated 4G/5G Multiservice MIMO Antenna for Hand-Held Devices

A novel compact monopole antenna with integrated services for 4G/5G application has been proposed in this manuscript. The 4G services such as Long Term Evolution (LTE) and GSM 850/900 is provided by the primary antenna of size 45 x 15 mm. The 5G communication services are supported by the auxiliary antenna of size 19 x 15 mm. The monopole radiator with the combination of multi-branch stubs and meandered structures in the primary radiator introduces the resonance at the desired operating frequency. The impedance bandwidth of the primary antenna is 170 MHz (0.8-0.97 GHz) and 900 MHz (1.8-2.7 GHz) for LTE and GSM applications. The impedance bandwidth of the auxiliary antenna is 7 GHz (13-20 GHz) for 5G application bands. To achieve the desired operating bands, the length and width of the stubs are used as the tuning parameters. The large ground plane of size 200 x 150 mm is used as the mock-up system for the proposed antenna structure. To enhance the coverage of the handheld devices, the primary and auxiliary antenna is integrated in the mock-up system. The efficiency and gain of the antenna are in the range of 3-5 dBi and 70-96%. The simulated and measured results are correlated with each other.