Design of Millimeter Wave Antenna for 5G Application

This paper proposes a millimeter wave dual-polarized antenna design for 5G application. It is based on a multilayer PCB structure and is fed by two differential feeding networks. The antenna consists of a rectangular driven patch with four cut corners, four sector stacked patches, and two differential feeding networks. The antenna is based on a multilayer PCB structure for cheap packaging. High polarization isolation and low cross polarization level are achieved through differential feeding networks. The prototype of the antenna is fabricated and measured. The proposed millimeter wave dual-polarized antenna covers 24.25-27.5 GHz (12.6%). The voltage standing wave ratio (VSWR) in this band is less than 1.5, the port isolation is greater than 34 dB, and the in-band gain is larger than 5.7 dBi. The 3-dB beam width is 75°±4°. The proposed design can provide a good solution for 5G millimeter wave communication.