ANTENNA DEVICE, BASE STATION SYSTEM, AND METHOD FOR TUNING ANTENNA DEVICE

摘要

An antenna device, a base station system, and a method for tuning the antenna device are provided in the embodiments of the present invention. The antenna device includes: a first antenna; a second antenna sharing a shield with the first antenna and having a different polarization direction; a control apparatus for receiving an electric tuning control signal for the first antenna and/or an electric tuning control signal for the second antenna, and according to the electric tuning control signal for the first antenna, tuning a down tilt angle of the first antenna and/or according to the electric tuning control signal for the second antenna, tuning a down tilt angle of the second antenna. Unlike the traditional double polarized antenna, in which one down tilt angle must be shared, the embodiments of the present invention may respectively tune the down tilt angles of two groups of antenna elements that constitute a shield-sharing double polarized antenna, thus may support different frequency bands or different systems in one frequency band to adopt different down tilt angles. Only one double polarized antenna is needed without additional antenna feeder, thus the cost of the device is decreased.