Unlock instant, AI-driven research and patent intelligence for your innovation.

cavity filter

A cavity filter and cavity technology, which is applied in the direction of waveguide devices, circuits, electrical components, etc., can solve the problems of occupying the external space of the cavity and affecting the flatness of the upper cover, and achieve the effect of reducing the occupied space

Inactive Publication Date: 2019-03-05
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A cavity filter is one of the common components in a communication system. A cavity filter usually includes an upper cover and multiple cavities. Each cavity is equipped with one or more resonant tubes. The function of each cavity Equivalent to an electronic oscillating circuit, the existing cavity filters fix several adjusting screws and corresponding nuts on the upper cover of the cavity, but the adjusting screws are fixed on the upper cover, which affects the flatness of the upper cover , and occupy the external space of the cavity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • cavity filter
  • cavity filter
  • cavity filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] refer to figure 1 , the cavity filter 10 shown includes a cavity 11, a resonance tube 12, an adjustment screw 13, a resonance cup 14 and an upper cover 16, the upper cover 16 is a thin plate structure, the upper cover 16 is covered on the cavity 11, and the resonance tube 12 is integrally formed with the cavity 11. An auxiliary ring 15 is fixed in the middle of the lower surface of the upper cover 16. The auxiliary ring 15 is a hollow circular cylinder located directly above the adjusting screw 13. The inner diameter of the auxiliary ring 15 is larger than the cross-sectional diameter of the adjusting screw 13. , when the adjusting screw 13 rotates upwards into the auxiliary ring 15, the auxiliary ring 15 encloses the adjusting screw 13, thus changing the area of ​​the lower surface of the upper cover corresponding to the adjusting screw 13 to change the distributed capacitance, thereby helping Change the range of cavity filter tuning frequency. In addition, the auxil...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A cavity filter comprises cavity bodies, resonant tubes, an adjusting screw and an upper cover, wherein the upper cover covers the cavity bodies; each cavity body comprises a cavity body bottom plate; the resonant tube is fixed on the cavity body bottom plate; the resonant tube and the cavity body bottom plate are provided with a thread hole; and the adjusting screw is screwed in the cavity body from the opening of the thread hole to adjust the resonant frequency of the cavity filter. Through arranging the thread hole in the resonant tube and the bottom part of the cavity body, the adjusting screw is screwed inside from the thread hole, space outside the cavity body of the cavity filter is saved, and the needed space for the cavity filter is reduced.

Description

technical field [0001] The invention relates to a cavity filter, in particular to a cavity filter which saves the space outside the cavity. Background technique [0002] A cavity filter is one of the common components in a communication system. A cavity filter usually includes an upper cover and multiple cavities. Each cavity is equipped with one or more resonant tubes. The function of each cavity Equivalent to an electronic oscillating circuit, the existing cavity filters fix several adjusting screws and corresponding nuts on the upper cover of the cavity, but the adjusting screws are fixed on the upper cover, which affects the flatness of the upper cover , and occupy the external space of the cavity. Contents of the invention [0003] In view of this, it is necessary to provide a cavity filter that prevents the adjusting screw from occupying the space outside the cavity. [0004] A cavity filter in an embodiment of the present invention includes a cavity body, a resona...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/207
Inventor 翁国执
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD