Cavity resonators, filters and communication equipment

A cavity resonator and cavity technology, applied in resonators, waveguide-type devices, circuits, etc., can solve the problem of affecting the filtering ability of cavity resonators, reducing the filtering ability of cavity resonators, and reducing the pass-through rate of cavity resonators. and other problems to achieve the effect of avoiding poor contact, reducing space occupation, and avoiding space

Active Publication Date: 2021-02-09
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The intermodulation interference signal will affect the filtering capability of the cavity resonator, resulting in a decrease in the filtering capability of the cavity resonator, that is, a decrease in the pass-through rate of the cavity resonator
At the same time, the tuning screw and the cover plate are connected by threads, which may become loose after long-term use, which will also cause the problem of intermodulation sensitivity in the cavity resonator

Method used

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  • Cavity resonators, filters and communication equipment
  • Cavity resonators, filters and communication equipment
  • Cavity resonators, filters and communication equipment

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Embodiment Construction

[0038]The implementation manners of the present application will be further described below in conjunction with the accompanying drawings.

[0039]figure 2 Is a schematic structural diagram of a cavity resonator provided by an embodiment of the present application, seefigure 2 , The cavity resonator includes a cover plate 8, a resonance column 9 and a cavity 10;

[0040]The cover plate 8 is installed at the opening at the top of the cavity 10, the resonance column 9 is arranged at the bottom of the cavity 10, and the top of the resonance column 9 faces the cover plate 8; wherein, at least among the cover plate 8, the resonance column 9 and the cavity 10 One of the materials is a plastic metal material, and the resonance frequency is adjusted through the deformation of the plastic metal material.

[0041]Since the cover plate 8 is installed in the opening at the top of the cavity 10, the resonance column 9 is arranged at the bottom of the cavity 10, and the distance between the cover plate 8 ...

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Abstract

The embodiment of the present application provides a cavity resonator, a filter and a communication device, which relate to the field of wireless communication. The cavity resonator includes a cover plate, a resonance column and a cavity; The column is set at the bottom of the cavity, since the distance between the cover plate and the resonant column will change the size of the distributed capacitance, the distance between the cavity and the resonant column will change the size of the distributed inductance, and the cover plate, the resonant column and the cavity The material of at least one of the bodies is a plastic metallic material. Therefore, when at least one of the cover plate, the resonant column or the cavity is deformed, the size of the distributed capacitance or the distributed inductance will be changed, thereby achieving the purpose of adjusting the resonant frequency. In addition, since the plastic metal material has the characteristic of not rebounding after deformation, when at least one of the cover plate, resonant column or cavity is deformed, it will not actively rebound and recover, avoiding the intermodulation sensitivity problem caused by poor contact, and improving Through rate.

Description

Technical field[0001]This application relates to the field of wireless communication, and in particular to a cavity resonator, filter and communication equipment.Background technique[0002]Cavity filter is a type of filter commonly used in wireless communication equipment. The existing cavity filter can include at least one cavity resonator, and each cavity resonator can be asfigure 1 As shown, the cavity resonator may include a cavity 1, a resonance column 2, a screw 3, a nut 4, a cover plate 5, a gasket 6 and a tuning screw 7. Wherein, the inner bottom surface of the cavity 1 is provided with a boss, the boss is provided with a threaded hole, the resonance column 2 can be installed on the boss by a screw 3, the cover plate 5 is provided with a threaded hole, the tuning screw 7 can be fixed on the cover plate 5 by a nut 4 and a backing plate 6. The tuning screw 7 rotates in the threaded hole on the cover plate 5 to adjust the distance between the bottom of the tuning screw 7 and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/207
CPCH01P7/04H01P1/20H01P7/06
Inventor 吴大淼崔铮张欢庆朱运涛
Owner HUAWEI TECH CO LTD
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