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Cavity filter and resonance column thereof

A cavity filter and resonant column technology, which is applied in the field of radio frequency communication, can solve the problems of difficult assembly, high cost, and low assembly efficiency, and achieve the effects of high assembly efficiency, low cost, and easy assembly

Active Publication Date: 2019-07-26
SHENZHEN GRENTECH RF COMM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this installation method is mass-produced, special personnel are required to prefabricate the screws, which is difficult to assemble, the assembly efficiency is not high, and the cost is high.

Method used

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  • Cavity filter and resonance column thereof
  • Cavity filter and resonance column thereof
  • Cavity filter and resonance column thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0029] refer to Figure 1 to Figure 3 , a cavity filter provided by the present invention includes a cavity 10, a cover plate 20 mounted to the opening end of the cavity 10, a tubular resonant column 30 disposed in the cavity 10, and a mounting hole pierced through the cover plate 20 Inside the tuning screw 40.

[0030] The resonant column 30 has an axial through hole, and the through hole includes a first part 31 and a second part 32 sequentially connected along the direction from the first end of the resonant column 30 to the second end of the resonant column 30 . The bottom of the cavity 10 is formed with a boss 12 which fits into the second part 32 .

[0031] In this embodiment, the inner wall of the second part 32 has an internal thread 321, and the outer surface of the boss 12 has an external thread, and the internal thread 321 cooperates with the external thread so that the second part 32 is threadedly connected with the boss 12, so that the boss 12 is threaded. Insta...

no. 2 example

[0041] refer to Figure 4 to Figure 6 The difference between this embodiment and the first embodiment is that the inner wall of the second part 32 has knurling 323, and the second part 32 and the boss 12 are riveted through the knurling 323, so that the boss 12 is riveted into the second part 32, The assembly is convenient and the assembly efficiency is improved.

[0042] The cross-sectional shape of the first part 31 is circular. Understandably, the cross-sectional shape of the first portion 31 may also be, for example, a triangle, a regular quadrilateral, or a polygon. The cross-sectional shape of the first part 31 can be set according to actual conditions.

[0043] When actually installing the resonant column 30, the second part 32 is first aligned with the boss 12, and then the resonant column 30 is pressed down, and the second part 32 is riveted with the boss 12 under the action of the knurling 323 until the resonant column 30 The installation is completed when the sec...

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PUM

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Abstract

The invention relates to a cavity filter and a resonance column thereof. The cavity filter comprises a cavity, a cover plate and a resonance column, wherein the cover plate is arranged at the openingend of the cavity; the resonance column is arranged in the cavity; the resonance column is provided with an axial through hole, wherein the through hole comprises a first part and a second part whichare connected in sequence along the direction from the first end of the resonance column to the second end of the resonance column; and a boss is formed at the bottom of the cavity, and the boss is arranged in the second part. The cavity filter is easy to assemble, high in assembly efficiency and low in cost.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of radio frequency communication, in particular to a cavity filter and a resonant column thereof. [0003] 【Background technique】 [0004] As a key component of the passive cavity filter, the resonant column has basically solidified its external shape, processing and molding methods, material selection, and installation and fixing methods. However, in the process of large-scale industrial production, how to reduce the difficulty of assembly and reduce the cost of products has become the goal that engineers and technicians need to consider. [0005] In the traditional cavity filter, the resonant column is installed and fixed mainly by screwing through the through hole reserved in the center of the resonant column, and screwing the threaded part of the screw into the matching threaded hole on the cavity. When this installation method is mass-produced, it needs to be equipped with special post personne...

Claims

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Application Information

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IPC IPC(8): H01P1/207H01P7/06
CPCH01P1/207H01P7/06
Inventor 陈瑞斌李世超
Owner SHENZHEN GRENTECH RF COMM LTD