Phase shifting device, antenna and base station

Abstract

The invention provides a phase shifting device, an antenna and a base station. The phase shifting device comprises a fixed dielectric plate, a movable dielectric plate and a plurality of phase shifters, wherein each phase shifter comprises a fixed transmission line printed on the fixed dielectric plate and a movable transmission line printed on the movable dielectric plate, and the fixed transmission line is coupled with the movable transmission line; and the movable dielectric plate and the fixed dielectric plate are opposite to each other in a surface-to-surface manner and are in pivotal connection with each other about a pivotal axis, the fixed transmission lines of the plurality of phase shifters are arranged in a coplanar manner around the pivotal axis, and the pivotal movement of the movable dielectric plate relative to the fixed dielectric plate enables the plurality of phase shifters to perform phase shifting synchronously. The phase shifting device is different from a traditional layout, and can be arranged on the same surface of the dielectric plate with the antenna radiation unit, so that a feed needle or a cable of which the front surface is butted with the back surface does not need to be additionally used, the signal and the phase error thereof are reduced, and the space utilization rate of the antenna reflecting plate is improved.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and in particular relates to a phase shifting device, an antenna and a base station. Background technique [0002] With the development of modern mobile communication technology, communication systems have a great demand for electronically adjustable antennas, and the weight and cost of electronically adjustable antennas depend on the phase shifter components. As the core component of the electronically adjustable antenna, the phase shifter plays a pivotal role in the planning and construction of the communication network system. The phase shifter can control the change of the signal phase, and it is the key device to realize the beamforming of the antenna pattern of the base station. The signal phase of the base station antenna is shifted by the phase shifter, and the signal phase between the antenna radiation units can be changed to adjust the downtilt angle of the antenna beam, w...

AI Technical Summary

Problems solved by technology

[0003] However, in the base station, the drive or rotating structure of the coupling circuit of the phase shifter used by the electric antenna is on the same side as the active transmission circuit board. This traditional phase shifter installed on the front will affect the radiation direction of the antenna; When placed on the back of the array antenna, due to its large weight and volume and high profile, it is not conducive to reducing the weight and cost of the communication system

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