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filter device

A filter device and conductor technology, applied in waveguide devices, resonators, circuits, etc., can solve the problems of complex filter assembly and tuning process, affecting filter frequency selectivity, uncontrollable degree of fastening, etc., to achieve simplification The effect of assembly and tuning process, convenient adjustment or replacement, and simplified tuning

Active Publication Date: 2021-02-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The cover plate is generally fastened to the cavity by screws, and the degree of fastening is uncontrollable, which directly affects the frequency selectivity of the filter.
And the tuning screw is installed on the cover plate, it is time-consuming to adjust the resonance characteristics of the filter by turning the tuning screw
The assembly and tuning process of the filter is complex

Method used

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Embodiment Construction

[0030] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0031] "Multiple" means two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and / or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character " / " generally indicates that the contextual objects are an "or" relationship.

[0032] The terms used in the present application have been described above to facilitate understanding by those ski...

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Abstract

The embodiment of the present application provides a filter device in order to effectively simplify the assembly and tuning process. The filter includes: a shell with an inner cavity; a resonant conductor with a resonant function built in the inner cavity; a pressing element with one end placed on the shell and the other end suspended, corresponding to the open end of the resonant conductor The resonant frequency can be adjusted by pressing or pulling to change the distance between the pressing element and the resonant conductor. The filtering device provided in the embodiment of the present application can be applied to various communication devices that need to select a signal frequency.

Description

technical field [0001] The embodiments of the present application relate to the technical field of communication, and in particular, to a filtering device. Background technique [0002] Filters are widely used in microwave communication, radar navigation, electronic countermeasures, satellite communication, missile guidance, test instruments and other systems. With the development of communication, the selectivity of the system to the channel is getting higher and higher, which puts forward higher requirements for the design of the filter. At the same time, the filter is an important part of the communication system, and its performance has a great influence on the quality of the communication system. [0003] A filter is a device with frequency selection function, which can pass specific frequency components in the signal while greatly attenuating other frequency components, thereby filtering out interference. There are many types of filters, among which cavity filters ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/207
CPCH01P1/207H01P1/2039H01P1/184H01P1/203H01P7/088
Inventor 邓良勇蔡丹涛
Owner HUAWEI TECH CO LTD
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