Compact Stable-gain Dual-polarized Base Station Antenna with Broadband using PRS

Abstract

Through such essay, we proposed the compact dual-polarized antenna with broadband in base station using a partially reflective surface (PRS). Multiple resonant patches of different shapes are placed side by side in one plane while one is coupling to another. In this way, a broad impedance bandwidth can be acquired, and at the same time, the structure also maintains a compact size. To better the impedance matching further more and lower the operation frequency band, a PRS is placed above the antenna substrate. Owing to the novel multi-radiator coupling structure and PRS, three resonances are simultaneously excited within the band, producing a wide bandwidth from 1.45-2.73GHz (|S11|＜-14dB). To validate the proposed ideas, a multi-radiator antenna is invented and the results are given.