SUPER-SURFACE-BASED DUAL-LINEAR POLARIZATION DUAL-BEAM BASE STATION ANTENNA

摘要

The present invention discloses a super-surface-based dual-linear polarization dual-beam base station antenna. The antenna comprises a radiation super-surface antenna layer, a metal floor etched with a plurality of cross slots, and a four-port feeder network layer. The radiation super-surface antenna layer is disposed as the uppermost layer, the four-port feeder network layer is disposed as the lowermost layer, the metal floor is arranged between the radiation super-surface antenna layer and the four-port feeder network layer, and the metal floor is etched to have a plurality of cross slots used for achieving a dual-linear polarization radiation characteristic; the plurality of cross slots are sequentially excited, and the energy of the four-port feeder network layer is coupled to the radiation super-surface antenna layer by means of the cross slots, thereby achieving dual-linear polarization beams. Compared to conventional dual-linear polarization dual beam array antennas, the present invention has a simple structure, reduces the loss from network formation by antenna beams, and achieves beam consistency within a working band. Moreover, due to the easy processing, low cost, and small volume, the present invention is more suitable for antenna array design and applicable for large-scale production.