Phase shifter

Abstract

The invention relates to a phase shifter. The phase shifter includes coaxial cables and a metal cavity; the interior of the metal cavity is divided into at least two independent radio frequency transmission areas through longitudinal partition boards; at least one side of the metal cavity are provided with strip-shaped grooves used for clamping the coaxial cables, wherein the strip-shaped grooves are in one-to-one correspondence with the independent radio frequency transmission areas; the strip-shaped grooves are arranged along the longitudinal length direction of the metal cavity; mounting holes through which the inner conductors of the coaxial cables can pass are formed at the groove bottoms of the strip-shaped grooves; horizontal cut-off reinforcement grooves which cut off the corresponding strip-shaped grooves are formed at one side of each mounting hole; a part of the outer conductor of each coaxial cable is fixed between a corresponding mounting hole and a corresponding horizontal cut-off reinforcement groove and is welded to the inner wall of a corresponding strip-shaped groove. With the phase shifter adopted, the coaxial cables can be firmly connected with the metal cavity, and the problem of inconsistency and instability of the work performance of an existing phase shifter caused by connection failure in the prior art can be solved.

Description

technical field [0001] The invention relates to the technical field of mobile communication antennas, in particular to a phase shifter. Background technique [0002] In the coverage of mobile communication network, the electric adjustable base station antenna is one of the key equipment of the coverage network, and the phase shifter is the core component of the electric adjustable base station antenna. The stability of the phase shifter directly determines the reliability of the electric adjustable antenna. sex and stability. [0003] In the prior art, the coaxial cable in the cavity-type phase shifter is usually connected to the phase shifter housing (metal cavity) through a connection block. Firstly, the coaxial cable is connected to the connection block, and then the connection block is passed through It is connected with the phase shifter housing. Due to this connection method, the threaded assembly is prone to stress failure during the production and assembly process, ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the coaxial cable in the cavity-type phase shifter is usually connected to the phase shifter housing (metal cavity) through a connection block. Firstly, the coaxial cable is connected to the connection block, and then the connection block is passed through It is connected with the phase shifter housing. Due to this connection method, the threaded assembly is prone to stress failure during the production and assembly process, and the structural strength will be weakened. In addition, the threaded assembly is also prone to slipping, which causes The connection between the connection block and the shell of the phase shifter will be loose, which will cause the function of the phase shifter to be unstable and seriously affect the electrical performance indicators of the corresponding communication network

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