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Band elimination filter frequency double-tuning structure

A band-stop filter and frequency technology, applied in the field of filters, can solve problems such as many uncertain factors, and achieve the effects of increasing stability, low cost and simple structure

Pending Publication Date: 2020-12-01
苏州诺泰信通讯有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that there are many uncertain factors in the prior art, and the band-stop filter frequency double-tuning structure proposed

Method used

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  • Band elimination filter frequency double-tuning structure
  • Band elimination filter frequency double-tuning structure
  • Band elimination filter frequency double-tuning structure

Examples

Experimental program
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Effect test

Embodiment

[0031] refer to Figure 1-6 , a band-stop filter frequency double-tuning structure, including a cavity 2, a cavity 201 is arranged on the cavity 2, and a band-stop main transmission copper sheet 7 is arranged in the cavity 201;

[0032] The outer walls on both sides of the cavity 2 are respectively provided with an input joint 3 and an output joint 5;

[0033] The cavity 2 is also provided with a resonant column 203, the resonant column 203 is provided with a first circular hole 204, the top outer wall of the cavity 2 is provided with a cover plate 1, and the cover plate 1 is provided with a matching first circular hole 204. Coupling tuning screw 11;

[0034] The outer wall of the bottom of the cavity 2 is provided with a second circular hole 205 matched with the resonant column 203, and the second circular hole 205 is connected with a frequency coupling auxiliary tuning screw 12, and the side wall of the cavity 2 is provided with a resonant column 203. Corresponding auxilia...

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Abstract

The invention discloses a band elimination filter frequency double-tuning structure and belongs to the field of filters. The band elimination filter frequency double-tuning structure comprises a cavity; a cavity is formed in the cavity; a band elimination main transmission copper sheet is arranged in the cavity; the outer walls of the two sides of the cavity are provided with an input connector and an output connector respectively; a coupling degree tuning screw matched with a first circular hole is arranged on a cover plate; a second circular hole matched with a resonance column is formed inthe outer wall of the bottom of the cavity; a frequency coupling degree auxiliary tuning screw is connected into the second circular hole; and an auxiliary screw corresponding to the resonance columnis arranged on the side wall of the cavity. The tuning auxiliary screw is additionally arranged on the side face of the single resonant cavity and extends into the single cavity, the influence on thecoupling degree of the single cavity is avoided, the band elimination filter frequency double-tuning structure is easy to implement, is simple in structure, is convenient to control; and design defects can be overcome through the auxiliary tuning screw, and the debugging speed is greatly increased.

Description

technical field [0001] The invention relates to the technical field of filters, in particular to a frequency double-tuning structure of a band-stop filter. Background technique [0002] In the design and debugging process of the band stop filter, the frequency tuning screw often affects the coupling degree index during debugging due to the relationship between the position, because the frequency and coupling degree of each single cavity are within the specified range, the index can be debugged to pass, In the previous debugging process, the frequency can only be changed by modifying the height of the resonant column, which leads to longer debugging sample time and increased uncertainties, and the structure is complex, not easy to control, and the debugging speed is slow. Therefore, an easy-to-implement, The structure is simple, easy to control, and can make up for the shortcomings of the existing design through the auxiliary tuning screw, which greatly increases the debuggin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/208
CPCH01P1/208
Inventor 史作毅梁文超汪亭
Owner 苏州诺泰信通讯有限公司
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