CN214043947U - Adjustable cavity filter - Google Patents
Adjustable cavity filter Download PDFInfo
- Publication number
- CN214043947U CN214043947U CN202120242474.2U CN202120242474U CN214043947U CN 214043947 U CN214043947 U CN 214043947U CN 202120242474 U CN202120242474 U CN 202120242474U CN 214043947 U CN214043947 U CN 214043947U
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- adjustable
- cavity
- boss
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- cavity filter
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- 238000012827 research and development Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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Abstract
The utility model discloses an adjustable cavity filter, including apron (1), tuning screw rod (2), cavity (3), still include: resonance post (5) with adjustable, the bottom of resonance post (5) with adjustable is equipped with the boss, the through-hole that supplies the boss to stretch out is seted up to the bottom of cavity, the boss stretches out the part outside the cavity at least and has the external screw thread, screw-thread fit has nut (6) on the external screw thread. The beneficial effects of the utility model are that pack into the cavity with adjustable resonance post by the nut fixed can, wipe out the vibration post through adjusting adjustable and adjust the frequency, realize that research and development sample initial stage can inform adjustable resonance to come the rapid debugging and go out required frequency, reduce research and development sample secondary or try sample and customer's sample time of hand-in and reduce the research and development cost many times.
Description
Technical Field
The utility model relates to a mobile communication field especially relates to an adjustable cavity filter.
Background
With the rapid development of wireless communication technology, the spectrum resources are increasingly tense, and the requirements on the frequency band of the filter are more and more. Therefore, the cavity depth and the size of the cavity filter adopt more and more sizes in the design process, and the debugging mode of the resonant column is simpler in the cavity filter. The existing filter only debugs frequency through a stud on a cover plate, as shown in fig. 1-2, and needs secondary processing when a sample is made at one time without a debugging frequency index and the frequency does not meet the requirement, so that the processing cost and the research and development period are prolonged, and the loss of company projects and customers is caused. The chinese utility model patent publication No. CN112072233A discloses a high-pass radio frequency filter, which comprises a resonant cavity, a cover plate and a resonant column disposed in the resonant cavity, wherein the length of the resonant column is adjustable, the resonant column is connected with a tuning screw, the tuning screw penetrates out from the cover plate and realizes the resonant column to adjust the working length in the resonant cavity, the resonant column comprises a fixed part fixedly connected with the inner surface of the cover plate and a movable part sleeved with the fixed part, and the movable part is fixedly connected with the tuning screw; although the length of the resonant column of the filter is adjustable, the filter has a complex structure, comprises a fixed part and a movable part, and can be operated only by opening the cavity when the adjustment is needed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is that the length of the unable convenient regulation resonance post of current cavity filter provides an adjustable cavity filter for this.
The technical scheme of the utility model is that: the utility model provides an adjustable cavity filter, includes apron, tuning screw rod, cavity, still includes: the adjustable resonant column is characterized in that a boss is arranged at the bottom of the adjustable resonant column, a through hole for the boss to extend out is formed in the bottom of the cavity, an external thread is arranged at the part of the boss extending out of the cavity at least, and a nut is matched with the external thread in a threaded manner.
In the scheme, the length of the boss exceeds the thickness of the bottom of the cavity.
In the scheme, the adjustable resonant column is cylindrical.
In the scheme, the tuning screw is fixed on the cover plate through the cover plate nut.
In the scheme, external threads are distributed on the boss along the axial direction of the boss.
The beneficial effects of the utility model are that pack into the cavity with adjustable resonance post by the nut fixed can, wipe out the vibration post through adjusting adjustable and adjust the frequency, realize that research and development sample initial stage can inform adjustable resonance to come the rapid debugging and go out required frequency, reduce research and development sample secondary or try sample and customer's sample time of hand-in and reduce the research and development cost many times.
Drawings
FIG. 1 is a schematic view of a prior art resonant column prior to assembly;
FIG. 2 is a schematic diagram of a prior art resonating column after assembly;
FIG. 3 is a schematic view of the present invention prior to assembly;
FIG. 4 is a schematic view of the present invention after assembly;
in the figure, the adjustable resonant column comprises a cover plate 1, a cover plate 2, a tuning screw rod 3, a cavity 4, a cover plate nut 5, an adjustable resonant column 6 and a nut.
Detailed Description
The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments of the ordinary skilled person in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 3-4, the utility model comprises: apron 1, tuning screw 2, cavity 3 still include: resonance post 5 with adjustable, resonance post 5's bottom with adjustable is equipped with the boss, the through-hole that supplies the boss to stretch out is seted up to the bottom of cavity, the boss stretches out the part outside the cavity at least and has the external screw thread, screw-thread fit has nut 6 on the external screw thread.
The utility model aims at: 1. the number of times of modification and the sample delivery period can be reduced in the initial development stage; 2. reducing the research and development cost for the company.
As an embodiment of the present invention, the tuning screw 2 is fixed on the cover plate by a cover nut 4, and the adjustable resonance post 5 is cylindrical. The length of the boss exceeds the thickness of the bottom of the cavity.
As an embodiment of the utility model, the part that the boss stretches out outside the cavity has the external screw thread, screw-thread fit has the nut on the external screw thread, adjusts the cooperation degree of adjustable resonance post and tuning screw through adjusting the partial length of boss outside the cavity.
As an embodiment of the present invention, the boss has an external thread distributed along an axial direction thereof. The degree of adjustment of the adjustable resonant column is thus higher.
Claims (5)
1. The utility model provides an adjustable cavity filter, includes apron (1), tuning screw rod (2), cavity (3), characterized by: further comprising: resonance post (5) with adjustable, the bottom of resonance post (5) with adjustable is equipped with the boss, the through-hole that supplies the boss to stretch out is seted up to the bottom of cavity, the boss stretches out the part outside the cavity at least and has the external screw thread, screw-thread fit has nut (6) on the external screw thread.
2. The adjustable cavity filter of claim 1, wherein: the length of the boss exceeds the thickness of the bottom of the cavity.
3. The adjustable cavity filter of claim 1, wherein: the adjustable resonant column (5) is cylindrical.
4. The adjustable cavity filter of claim 1, wherein: the tuning screw rod (2) is fixed on the cover plate through a cover plate nut (4).
5. The adjustable cavity filter of claim 1, wherein: and external threads are distributed on the boss along the axial direction of the boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120242474.2U CN214043947U (en) | 2021-01-28 | 2021-01-28 | Adjustable cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120242474.2U CN214043947U (en) | 2021-01-28 | 2021-01-28 | Adjustable cavity filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214043947U true CN214043947U (en) | 2021-08-24 |
Family
ID=77347764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120242474.2U Expired - Fee Related CN214043947U (en) | 2021-01-28 | 2021-01-28 | Adjustable cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214043947U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112787056A (en) * | 2021-01-28 | 2021-05-11 | 华沣通信科技有限公司 | Adjustable cavity filter |
-
2021
- 2021-01-28 CN CN202120242474.2U patent/CN214043947U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112787056A (en) * | 2021-01-28 | 2021-05-11 | 华沣通信科技有限公司 | Adjustable cavity filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210824 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |