CN208014875U - A kind of cavity body filter - Google Patents
A kind of cavity body filter Download PDFInfo
- Publication number
- CN208014875U CN208014875U CN201820440581.4U CN201820440581U CN208014875U CN 208014875 U CN208014875 U CN 208014875U CN 201820440581 U CN201820440581 U CN 201820440581U CN 208014875 U CN208014875 U CN 208014875U
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- frequency modulation
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- cover board
- cavity body
- body filter
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Abstract
The utility model discloses a kind of cavity body filters, belong to radio frequency products technical field.The cavity body filter of the utility model includes shell, the cover board fastened with shell and the tuning plug being set in shell, the position that cover board corresponds to tuning plug is provided with frequency modulation piece, there are gap between cover board and tuning plug, frequency modulation piece can be pressed deformation and be adjusted into line frequency with changing the distance between frequency modulation piece and tuning plug；Cover board is additionally provided with tune coupling piece, and coupling piece is adjusted to be set between two neighboring frequency modulation piece, adjusts coupling piece that can be pressed deformation and carries out adjusting coupling bandwidth.The setting that the cavity body filter of the utility model passes through cancellation tuning screw, the thickness requirement to cover board can be reduced, and passes through the phenomenon that directly cavity is easy to be punctured by power discharge when frequency and coupling bandwidth is adjusted to avoid tuning screw on the cover board by frequency modulation piece and the setting of tune coupling piece.
Description
Technical field
The utility model is related to radio frequency products technical field more particularly to a kind of cavity body filters.
Background technology
In recent years, along with science and technology rapid development, wireless communication system also microwave, millimeter-wave technology it is swift and violent
Significant progress has been obtained in development.Cavity body filter is a kind of typical frequency selection device, it can effectively inhibit nothing
With signal, prevent it from by filter, only useful signal passes through filter.
In the prior art, cavity body filter uses cavity body structure, and a cavity can be equivalent at inductance in parallel capacitance, in this way
With regard to forming a resonance level, reach filter function.Cavity body filter is by resonant cavity, the tuning plug being set in resonant cavity, setting
In compositions such as tuning screws on cover board.Enter the depth of tuning plug by adjusting tuning screw to adjust frequency and strap
Width is used in combination locking nut to fix tuning screw to keep adjustment state.This regulative mode so that tuning screw stretches into cavity meeting
The discontinuous shape for leading to inside cavity electric current influences intermodulation index, and the corner of tuning screw can be such that energy of electromagnetic field gathers,
It is easier that power discharge is caused to puncture.And since tuning screw is set on cover board, the thickness of cover board usually requires that thicker（Greatly
About 2mm~3mm）.
In view of the above-mentioned problems, it is urgent to provide a kind of cavity body filter, frequency and coupling is being adjusted to solve tuning screw
Cavity is easy to be punctured by power discharge when crossed belt is wide, and since the setting of tuning screw is so that require cover sheet thickness thicker
Problem.
Utility model content
The purpose of this utility model is to provide a kind of cavity body filters, can solve tuning screw and frequency is being adjusted
And coupling bandwidth when cavity be easy punctured by power discharge, and due to the setting of tuning screw make to cover sheet thickness requirement compared with
Thick problem.
The used following technical scheme of the utility model：
A kind of cavity body filter, including shell, the cover board fastened with the shell and the tune being set in the shell
Humorous bar, the position that the cover board corresponds to the tuning plug is provided with frequency modulation piece, between existing between the cover board and the tuning plug
Gap, the frequency modulation piece can be pressed deformation to change the distance between the frequency modulation piece and the tuning plug into line frequency tune
Section；The cover board is additionally provided with tune coupling piece, and the tune coupling piece is set between the two neighboring frequency modulation piece, the tune coupling
Conjunction piece can be pressed deformation and carry out adjusting coupling bandwidth.
After this structure, by cancelling the setting of tuning screw, the thickness requirement to cover board can be reduced, and lead to
Cross directly can avoid tuning screw that frequency and coupling bandwidth is being adjusted frequency modulation piece and tune coupling piece setting on the cover board
When cavity be easy the phenomenon that being punctured by power discharge.
Preferably, described adjust the shape of coupling piece for triangle, square, rectangle, regular pentagon, regular hexagon or circle
Shape, and described one end for adjusting coupling piece is connect with the cover board.
Preferably, being provided with first through hole on the tune coupling piece.
Preferably, the shape of the frequency modulation piece is identical as the tune shape of coupling piece.
Preferably, the frequency modulation piece includes several frequency modulation valves being evenly distributed, one end of the frequency modulation valve with it is described
Cover board connects, and the frequency modulation valve can individually be pressed deformation to change the distance between itself and the tuning plug.
Preferably, the frequency modulation piece is provided centrally with the second through-hole, the frequency modulation valve is far from second through-hole
One end is connect with the cover board.
Preferably, the frequency modulation piece is integrally formed with the cover board with the tune coupling piece.
Preferably, the thickness of the cover board is 0.2mm~1mm.
Preferably, the cover board is welded on the shell.
The beneficial effects of the utility model：
Cavity body filter in the utility model can reduce the thickness to cover board by cancelling the setting of tuning screw
It is required that and by that directly can avoid tuning screw that frequency is being adjusted on the cover board frequency modulation piece and tune coupling piece setting
And cavity easy the phenomenon that being punctured by power discharge when coupling bandwidth.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of cavity body filter provided by the utility model；
Fig. 2 is a kind of schematic cross-section of cavity body filter provided by the utility model.
In figure：
1, shell；2, cover board；3, coupling piece is adjusted；31, first through hole；4, frequency modulation piece；41, frequency modulation valve；42, the second through-hole；
5, tuning plug.
Specific implementation mode
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
The utility model discloses a kind of cavity body filters, as illustrated in fig. 1 and 2.The cavity body filter, including shell 1, with
The cover board 2 that shell 1 fastens and the tuning plug 5 being set in shell 1, the position that cover board 2 corresponds to tuning plug 5 are provided with frequency modulation
Piece 4, there are gap between cover board 2 and tuning plug 5, frequency modulation piece 4 can be pressed deformation with change frequency modulation piece 4 and tuning plug 5 it
Between distance into line frequency adjust；Cover board 2 be additionally provided with adjust coupling piece 3, adjust coupling piece 3 be set to two neighboring frequency modulation piece 4 it
Between, it adjusts coupling piece 3 that can be pressed deformation and carries out adjusting coupling bandwidth.
After this structure, by the setting of cancellation tuning screw, the thickness requirement to cover board 2 can be reduced, and
It can avoid tuning screw that frequency and coupling is being adjusted by the way that directly frequency modulation piece 4 and tune coupling piece 3 are arranged on cover board 2
The phenomenon that cavity is easy to be punctured by power discharge when bandwidth.
Wherein, it can be triangle, square, rectangle, regular pentagon, regular hexagon or circle to adjust the shape of coupling piece 3
In any one laminated structure, and adjust coupling piece 3 one end connect with cover board 2.Frequency modulation piece 4 can be with the shape of tune coupling piece 3
It is identical.
In this present embodiment, frequency modulation piece 4 includes several frequency modulation valves 41 being evenly distributed, one end of frequency modulation valve 41 and cover board
2 connections, and frequency modulation valve 41 can individually be pressed deformation to change the distance between itself and tuning plug 5.When due to adjusting frequency,
Tuning plug 5 is relatively sensitive, and frequency modulation piece 4 is arranged to be made of multiple frequency modulation valves 41, can be needed according to frequency modulation to one
Or multiple frequency modulation valves 41 carry out pressing deformation adjustment, so as to preferably be adjusted to frequency.Coupling bandwidth is adjusted
When, 3 relative insensitivity of coupling piece is adjusted, it is circle to adjust coupling piece 3, and one end is connect with cover board 2.
Specifically, cover board 2 uses thickness for 0.2mm~1mm flake planks, using simple cutting technique in cover board 2
On process frequency modulation piece 4 and adjust coupling piece 3, i.e., by cover board 2 carry out cutting line processing, processing can carry out by buckling
The frequency modulation piece 4 and tune coupling piece 3 of shape, can be such that frequency modulation piece 4 is integrally formed with cover board 2 with coupling piece 3 is adjusted, and processing side in this way
Just.It waits for frequency modulation piece 4 and adjusts coupling piece 3 after processing is completed, cover board 2 is welded on shell 1, screw installation can be saved in this way.
In this present embodiment, cover board 2 uses thickness for 0.5mm flake planks.
It is provided with first through hole 31 on coupling piece 3 in addition, adjusting, frequency modulation piece 4 is provided centrally with the second through-hole 42, frequency modulation valve
41 one end far from the second through-hole 42 are connect with cover board 2.The setting of wherein first through hole 31 and the second through-hole 42 is for frequency modulation
Piece 4 and adjust coupling piece 3 by compressive strain it is excessive after, 4 box tune coupling piece 3 of frequency modulation piece can be lifted again and be adjusted.
The technical principle of the utility model is described above in association with specific embodiment.These descriptions are intended merely to explain this reality
With novel principle, and it cannot be construed to the limitation to scope of protection of the utility model in any way.Based on the explanation herein,
Those skilled in the art would not require any inventive effort the other specific implementation modes that can associate the utility model,
These modes are fallen within the scope of protection of the utility model.
Claims (9)
1. a kind of cavity body filter, including shell（1）And the shell（1）The cover board of fastening（2）And it is set to the shell
Body（1）Interior tuning plug（5）, which is characterized in that the cover board（2）The corresponding tuning plug（5）Position be provided with frequency modulation piece
（4）, the cover board（2）With the tuning plug（5）Between there are gap, the frequency modulation pieces（4）Deformation can be pressed to change
The frequency modulation piece（4）With the tuning plug（5）The distance between into line frequency adjust；The cover board（2）It is additionally provided with tune coupling
Piece（3）, the tune coupling piece（3）It is set to the two neighboring frequency modulation piece（4）Between, the tune coupling piece（3）Can by by
Compressive strain carries out adjusting coupling bandwidth.
2. cavity body filter according to claim 1, which is characterized in that the tune coupling piece（3）Shape be triangle,
Square, rectangle, regular pentagon, regular hexagon or circle, and the tune coupling piece（3）One end and the cover board（2）Connection.
3. cavity body filter according to claim 2, which is characterized in that the tune coupling piece（3）On to be provided with first logical
Hole（31）.
4. cavity body filter according to claim 2, which is characterized in that the frequency modulation piece（4）Shape and the tune coupling
Close piece（3）Shape it is identical.
5. cavity body filter according to claim 1, which is characterized in that the frequency modulation piece（4）Including what is be evenly distributed
Several frequency modulation valves（41）, the frequency modulation valve（41）One end and the cover board（2）Connection, and the frequency modulation valve（41）It can be independent
Deformation is pressed to change itself and the tuning plug（5）The distance between.
6. cavity body filter according to claim 5, which is characterized in that the frequency modulation piece（4）Be provided centrally with second
Through-hole（42）, the frequency modulation valve（41）Far from second through-hole（42）One end and the cover board（2）Connection.
7. according to the cavity body filter described in claim 1-6 any one, which is characterized in that the frequency modulation piece（4）With it is described
Adjust coupling piece（3）With the cover board（2）It is integrally formed.
8. cavity body filter according to claim 1, which is characterized in that the cover board（2）Thickness be 0.2mm~1mm.
9. cavity body filter according to claim 1, which is characterized in that the cover board（2）It is welded in the shell（1）
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820440581.4U CN208014875U (en) | 2018-03-29 | 2018-03-29 | A kind of cavity body filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820440581.4U CN208014875U (en) | 2018-03-29 | 2018-03-29 | A kind of cavity body filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208014875U true CN208014875U (en) | 2018-10-26 |
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ID=63891382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820440581.4U Active CN208014875U (en) | 2018-03-29 | 2018-03-29 | A kind of cavity body filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208014875U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113437458A (en) * | 2021-05-06 | 2021-09-24 | 武汉凡谷电子技术股份有限公司 | Filter for realizing frequency modulation by synchronous belt transmission structure |
-
2018
- 2018-03-29 CN CN201820440581.4U patent/CN208014875U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113437458A (en) * | 2021-05-06 | 2021-09-24 | 武汉凡谷电子技术股份有限公司 | Filter for realizing frequency modulation by synchronous belt transmission structure |
| CN113437458B (en) * | 2021-05-06 | 2022-08-09 | 武汉凡谷电子技术股份有限公司 | Filter for realizing frequency modulation by synchronous belt transmission structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Building 3, 5 and auxiliary buildings of Phase II standard plant, No. 99, Xubang Road, Wuzhong Economic Development Zone, Suzhou City, Jiangsu Province, 215100 Patentee after: Suzhou Lixun Technology Co.,Ltd. Address before: No. 158, Jinchang Road, Jinxi Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: KUNSHAN LIXUN RF TECHNOLOGY CO.,LTD. |
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| CP03 | Change of name, title or address |