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Filter

A filter and resonator technology, which is applied in the direction of waveguide devices, circuits, electrical components, etc., can solve the problems of poor applicability of filters and achieve the effect of improving applicability

Active Publication Date: 2019-09-17
SHENZHEN UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The main purpose of the present invention is to provide a filter, which aims to solve the technical problem of poor filter applicability in the prior art

Method used

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Embodiment Construction

[0022] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0023] figure 1 is a schematic perspective view of a filter according to an embodiment of the present invention. figure 2 is a cross-sectional view of a filter according to an embodiment of the present invention.

[0024] As can be seen from the figure, the filter can have a housing, a first tubular object 5, a resonator 63 and a second tu...

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Abstract

The invention relates to a filter which comprises a shell, a first tubular object, a resonator and a second tubular object. The shell comprises a bottom plate, side plates and a cover plate, and a through hole is formed in the cover plate. By changing the volume of the liquid in the first tubular object, the dielectric constant in the first tubular object is changed, so that the equivalent wavelength in the filter is changed, and the resonant frequency in the filter is adjusted. By changing the volume of the liquid in the second tubular object, the dielectric constant in the second tubular object is changed, so that the coupling strength in the filter is changed, the resonant frequency in the filter is separated, and the fractional bandwidth of the filter is kept unchanged under the condition that the resonant frequency is changed. The filter can be applied to different scenes by adjusting the resonant frequency in the filter, so that the applicability of the filter is improved.

Description

technical field [0001] The invention relates to the field of electronic components, in particular to a filter. Background technique [0002] A microwave filter is a device used to separate different microwave frequencies. It can suppress unwanted frequency signals and only allow the required frequency signals to pass through. It plays a very important role in the transmitting and receiving ends of the communication system. However, once the traditional microwave filter is processed, the passband of the microwave filter (the frequency range that the filter can pass through) is fixed, resulting in poor applicability of the existing microwave filter. Contents of the invention [0003] The main purpose of the present invention is to provide a filter to solve the technical problem of poor filter applicability in the prior art. [0004] In order to solve the problems of the technologies described above, the technical solution provided by the invention is: [0005] A filter, co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/20
CPCH01P1/20
Inventor 王世伟谢杰恩袁芊芊周克宇陈瑞森郭建珲陈国文胡雄敏
Owner SHENZHEN UNIV
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