DUAL-FREQUENCY DUAL-POLARIZED BASE STATION ANTENNA FOR PARALLEL DUAL FEEDING

摘要

Disclosed is a dual-frequency dual-polarized base station antenna for parallel dual feeding, which sequentially comprises a radiation patch layer, four inverted-L-shaped metal strips which are perpendicular to the radiation patch layer and are orthogonal to each other and a feeding layer from top to bottom. The radiation patch layer comprises a first metal covering layer and a first dielectric layer, wherein the first metal covering layer is of a square shape, and isosceles right-angled triangles with the same size are cut from all corners. The four inverted-L-shaped metal strips serve as extensions of the feeding layer and perform coupled feeding on the radiation patch layer. The feeding layer sequentially comprises a first metal feeder line layer, a second dielectric layer, a metal floor layer, a third dielectric layer and a second metal feeder line layer from top to bottom. The advantages and beneficial effects of the present invention are that the base station antenna is small in volume, a feed network is simple in structure and the bandwidth is wider.