Abstract
A phased array antenna system with the beam scanning function for the Sub-6 outdoor CPE is presented. The antenna element consists of a pair of dipoles, and the operating frequency is 2.49-3.8 GHz. The gain of a single antenna unit is greater than 8.5 dBi, having 41.5% (VSWR <2) impedance bandwidth and high port-to-port isolation (> 20 dB). The antenna array consisting of eight antenna elements supports the same coverage frequency band. A phase shifter based on the vector multiplier is designed in order to realize the electrical down-tilt of the antenna beam, which can realize 0-360° continuous phase control for a single channel. When eight channels work together, the antenna array can achieve ±40° electrically down tilt in the V-plane. The antenna array has broad bandwidth, and can adjust the pattern electronically to match different application scenarios.
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