Antenna device, base station system and method for adjusting antenna device

Abstract

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.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communications, and more specifically, to an antenna device, a base station system, and a method for adjusting an antenna device. Background technique [0002] With the development of cellular communication technology, multi-frequency antenna feeder has become an industry trend, such as 800MHz and 900MHz share a 790-960MHz broadband antenna, 1800MHz and 2100MHz share a 1710-2200MHz broadband antenna. However, due to different network requirements, different frequency bands have different requirements for antenna downtilt angles. For example, the 800MHz frequency band newly introduced by LTE (Long Term Evolution) co-sites with 900MHz in urban areas. 900MHz is mostly used for GSM (Global System for Mobile Communications; Global System for Mobile Communications), hoping to have good coverage, dense sites, and large antenna downtilt to avoid interference; but for new LTE800, in the i...

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Problems solved by technology

Also, since the two polarized antenna elements of the current dual-polarized antenna are synchronously adjusted for electrical downtilt, this configuration scheme cannot achieve different downtilt angles for different frequency bands.

If you want to solve this problem, you must increase the antenna feeder, or do not increase the feeder line, only increase the antenna, which will increase the equipment cost

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