Dielectric sliding phase shifter and base station antenna

Abstract

The invention relates to a dielectric sliding phase shifter and a base station antenna. The dielectric sliding phase shifter includes a cavity, a feed network and a phase shifting unit. The feed network includes functional circuits and phase shifting circuits. The surface of each phase-shifting circuit is covered with a dielectric plate. By rotating the dielectric plate, the length of the phase-shifting circuit covered by the dielectric plate can be changed, thereby changing the electrical length of the transmission line to achieve phase adjustment. Further, both the phase-shifting circuit and the dielectric plate are arc-shaped. Therefore, when the dielectric plate of the phase shifting unit rotates around the axis passing through the center of the circle, the dielectric plate will be limited within a circle without exceeding the range of the corresponding phase shifting circuit. That is to say, the phase adjustment process of each phase shifting circuit is relatively independent. Therefore, the functional circuit and the phase shifting circuit can be independently designed separately, which greatly improves the design space of the circuit, greatly reduces the design difficulty of the phase shifter, and solves the limitation of the circuit design space in the traditional dielectric sliding phase shifter The problem.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a dielectric sliding phase shifter and a base station antenna. Background technique [0002] In the signal coverage process of mobile communication, the electric adjustable antenna is very well adapted to the needs of the industry with its flexible beam adjustment and remote control functions, and is very popular in the field of mobile communication. In recent years, with the in-depth development of mobile communications, the requirements for miniaturization, integration, high performance, and low cost of electronically adjustable antennas have increased the requirements for its core component, the phase shifter. [0003] Phase shifters in mobile communications are generally classified into network sliding type and medium sliding type. The network sliding phase shifter changes the phase by changing the physical length of the transmission path, but this type of pha...

AI Technical Summary

Problems solved by technology

[0004] However, in the traditional dielectric sliding phase shifter, since most of the circuits are closely covered by the dielectric, and there is cross interference between the modules, they are uniformly affected by the sliding media

Therefore, the design space of the phase shifter circuit is limited, and the design difficulty and the complexity of the structure of the phase shifter are increased.

Images