Abstract
Integrating the sub-6 GHz antenna and the millimeter-wave (mm-wave) antenna in one radiating aperture is a promising approach to support different frequency bands for the incoming communication system. In this paper, an mm-wave dual-polarized 64-element phased-array antenna is integrated into the partially reflective surface (PRS) of a sub-6 GHz resonant cavity antenna (RCA). The PRS consists of two multi-layer printed circuit boards (PCBs), which are stacked together and connected by solder joints. The thick PRS unit cell is designed with a miniaturized footprint at 3.5 GHz and can also contain a 2 × 2 mm-wave active subarray, including four stacked-patch antennas, a beamformer IC (BFIC), and some other input circuits. A copper plate is also inserted in the PRS for thermal control. A prototype antenna is fabricated and measured. Measurement results agree well with the simulation. In the sub-6 GHz band, the proposed antenna demonstrates dual-polarized radiation over the frequency band from 3.45 GHz to 3.58 GHz. In the high-frequency band, the dual-polarized mm-wave array driven by the built-in active beamforming network is capable of scanning ± 45° both in azimuth and elevation over the frequency band from 24.5 GHz to 27 GHz.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
