Base station antenna

The utility model relates to the technical field of antennas, and provides a base station antenna, which comprises a feed unit, a radiator and an isolating layer. The feed unit is provided with a feed end face; the radiator is arranged on the feed end face and is spaced from the feed end face; the isolation layers are arranged on the side, away from the feed end face, of the radiator at intervals. According to the base station antenna provided by the utility model, the isolation layer is additionally arranged in the thickness direction of the feed unit and in the space above the radiator, so that compared with the traditional mode that the radiator is separated by adopting an isolation strip to realize decoupling, the radiator can be decoupled in the plane where the isolation layer is located, so as to improve the isolation degree of the radiator; meanwhile, the installation of the radiator is not limited by the additional mode, namely, the distance between the isolating layer and the radiator can be adjusted