CN106992343A - A kind of small cavity filter - Google Patents
A kind of small cavity filter Download PDFInfo
- Publication number
- CN106992343A CN106992343A CN201710335633.1A CN201710335633A CN106992343A CN 106992343 A CN106992343 A CN 106992343A CN 201710335633 A CN201710335633 A CN 201710335633A CN 106992343 A CN106992343 A CN 106992343A
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- CN
- China
- Prior art keywords
- cover plate
- resonant cavity
- tuning
- tapped
- tuning screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
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Abstract
The present invention relates to communication equipment field, specifically related to a kind of small cavity filter, resonant cavity including upper opening, the cover plate being arranged at resonant cavity opening and the resonatron being arranged in resonant cavity, the contact surface of cover plate and resonant cavity sets fluted, and resonant cavity outer wall engages in an interference fit with groove；Offered on the cover plate and tuning screw is provided with tapped through hole, tapped through hole, the lower surface of cover plate is provided with elastic cover plate, and elastic cover plate can be deformed upon under the tuning of tuning screw.Elastic cover plate of the present invention produces that the relative area that deformation formed is far longer than tuning screw and tuning plug position changes formed relative area under the adjustment effect of tuning screw, and electric capacity, tuning sensitivity and the scope of tuning are increased by this pattern.
Description
Technical field
The invention belongs to communication equipment field, and in particular to a kind of small cavity filter.
Background technology
With the development of mobile communication, user uses the telephone traffic produced by mobile phone increasingly to increase in building
Plus, it is desirable to interior also covers good mobile communication service, however in building because wall is thicker, area is larger, floor compared with
The reasons such as height, are frequently present of network blind area of coverage, meanwhile, indoor communications are also caused to the keen competition of user between each operator
Overlay network increases, interference aggravates, and artificially causes the deterioration of communication quality, produces Intermodulation Interference.Cavity body filter is used as one
Frequency selection device is planted, it is wide for selecting communication signal frequency and filtering out the clutter outside communication signal frequency or interference signal
It is general to be applied in mobile base station, to reduce inter-modulated signal interference.On the one hand, intermodulation is the important indicator of wave filter product, but existing
There are resonant rod and tuning screw that the cavity body filter in technology generally comprises cavity, cover plate, is correspondingly arranged, cover plate is provided with
Screwed hole, tuning screw is stretched into resonator by the screwed hole on cover plate, with resonant column formation structure capacitive, is adjusted by adjusting
Humorous screw rod screws in the depth of cover plate to adjust wave filter, so as to reach the purpose of tuning.After the completion of debugging, tuning screw will be deep
Enter in resonator.And radiofrequency signal is that, in body surface transmission, the male and fomale(M＆F) of such tuning screw can have a strong impact on product
Index, such as third order intermodulation, Insertion Loss, high-power etc..On the other hand, the height of existing wave filter is required for being designed into very high
The lower frequency required by wave filter can be reached, so, waste of materials, cost is improved and does not say, maximum shortcoming is exactly
The volume of resonant rod, height is caused to increase, it is impossible to meet the small form factor requirements of actual production.
The content of the invention
It is an object of the invention to provide a kind of small cavity filter for meeting miniaturization production requirement.
To reach above-mentioned requirements, the present invention is adopted the technical scheme that：A kind of small cavity filter, including top are provided
The resonant cavity of opening, the cover plate being arranged at resonant cavity opening and the resonatron being arranged in resonant cavity, cover plate with it is humorous
Shake cavity contact surface set it is fluted, resonant cavity outer wall engages in an interference fit with groove；Opened on the cover plate
Provided with tapped through hole, tuning screw is provided with tapped through hole, the lower surface of cover plate is provided with elastic cover plate, and elastic cover plate is in tuning
It can be deformed upon under the tuning of screw rod.
Compared with prior art, the present invention has advantages below：
(1) elastic cover plate produces the relative area that deformation formed under the adjustment effect of tuning screw and is far longer than tuning
Screw rod and tuning plug position change formed relative area, by this pattern increase electric capacity, tuning sensitivity with
And the scope of tuning；
(2) cover plate engages in an interference fit with resonant cavity, reduces assembly cost；
(3) resonatron engages in an interference fit with resonant cavity, reduce further assembly cost.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding of the present application, the part of the application is constituted, at this
Same or analogous part, the schematic description and description of the application are represented using identical reference number in a little accompanying drawings
For explaining the application, the improper restriction to the application is not constituted.In the accompanying drawings：
Fig. 1 is structural representation of the invention.
Embodiment
To make the purpose, technical scheme and advantage of the application clearer, below in conjunction with drawings and the specific embodiments, to this
Application is described in further detail.For the sake of simplicity, eliminate that well known to a person skilled in the art some skills in describing below
Art feature.
As shown in figure 1, the present embodiment provides a kind of small cavity filter, include resonant cavity 4, the setting of upper opening
Cover plate 1 at the opening of resonant cavity 4 and the resonatron 5 being arranged in resonant cavity 4, the contact surface of cover plate 1 and resonant cavity 4
Set fluted, the outer wall of resonant cavity 4 engages in an interference fit with groove；Tapped through hole is offered on the cover plate 1,
Tuning screw 3 is provided with tapped through hole, the lower surface of cover plate 1 is provided with elastic cover plate 2, tune of the elastic cover plate 2 in tuning screw 3
It can be deformed upon under humorous.
The bottom of resonatron 5 of the small cavity filter is provided with annular flange 6, and the inner bottom surface of resonant cavity 4 offers ring
Connected in star, annular flange 6 engages in an interference fit with annular groove.
Above example only represents the several embodiments of the present invention, and it describes more specific and detailed, but can not manage
Solve as limitation of the scope of the invention.It should be pointed out that for the person of ordinary skill of the art, not departing from this hair
On the premise of bright design, various modifications and improvements can be made, these belong to the scope of the present invention.Therefore the present invention
Protection domain should be defined by claim.
Claims (2)
1. a kind of small cavity filter, it is characterised in that the resonant cavity including upper opening, be arranged on resonant cavity opening
The contact surface of the cover plate at place and the resonatron being arranged in resonant cavity, cover plate and resonant cavity sets fluted, resonant cavity
Outer wall engages in an interference fit with groove；Offered on the cover plate in tapped through hole, tapped through hole provided with tuning spiral shell
Bar, the lower surface of cover plate is provided with elastic cover plate, and elastic cover plate can be deformed upon under the tuning of tuning screw.
2. small cavity filter according to claim 1, it is characterised in that the resonance bottom of the tube is provided with convex annular
Edge, resonant cavity inner bottom surface offers annular groove, and annular flange engages in an interference fit with annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335633.1A CN106992343A (en) | 2017-05-12 | 2017-05-12 | A kind of small cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335633.1A CN106992343A (en) | 2017-05-12 | 2017-05-12 | A kind of small cavity filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106992343A true CN106992343A (en) | 2017-07-28 |
Family
ID=59420444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710335633.1A Withdrawn CN106992343A (en) | 2017-05-12 | 2017-05-12 | A kind of small cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106992343A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190082026A (en) * | 2017-12-29 | 2019-07-09 | 주식회사 에이스테크놀로지 | RF Cavity Filter Using High elasticity Plate Elastic Body and Method for Producing the Same in Order to Prohibit Inflow of Debris |
| WO2019178870A1 (en) * | 2018-03-23 | 2019-09-26 | 深圳市大富科技股份有限公司 | Filter and communication device |
| CN110299588A (en) * | 2018-03-22 | 2019-10-01 | 京信通信系统（中国）有限公司 | Cavity body filter |
| KR20190119929A (en) * | 2018-04-13 | 2019-10-23 | 주식회사 에이스테크놀로지 | RF Cavity Filter Robust to Degradation Due to PIMD and Method for Producing the Same |
| CN112615116A (en) * | 2020-12-30 | 2021-04-06 | 苏州波发特电子科技有限公司 | Miniaturized 5G filter |
| CN113346215A (en) * | 2021-06-29 | 2021-09-03 | 大富科技(安徽)股份有限公司 | Resonator, filter, duplexer, multiplexer and communication equipment |
| CN113745780A (en) * | 2020-05-29 | 2021-12-03 | 华为技术有限公司 | Cavity filter and communication equipment |
| KR20220035662A (en) * | 2020-09-14 | 2022-03-22 | 주식회사 에이스테크놀로지 | RF Cavity Filter Having a Cover Where Tuning Structure is Integrated |
| WO2023273032A1 (en) * | 2021-06-29 | 2023-01-05 | 大富科技(安徽)股份有限公司 | Resonator, filter, duplexer, multiplexer, and communication device |
-
2017
- 2017-05-12 CN CN201710335633.1A patent/CN106992343A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190082026A (en) * | 2017-12-29 | 2019-07-09 | 주식회사 에이스테크놀로지 | RF Cavity Filter Using High elasticity Plate Elastic Body and Method for Producing the Same in Order to Prohibit Inflow of Debris |
| KR102034603B1 (en) | 2017-12-29 | 2019-10-21 | 주식회사 에이스테크놀로지 | RF Cavity Filter Using High elasticity Plate Elastic Body and Method for Producing the Same in Order to Prohibit Inflow of Debris |
| CN110299588A (en) * | 2018-03-22 | 2019-10-01 | 京信通信系统（中国）有限公司 | Cavity body filter |
| WO2019178870A1 (en) * | 2018-03-23 | 2019-09-26 | 深圳市大富科技股份有限公司 | Filter and communication device |
| KR20190119929A (en) * | 2018-04-13 | 2019-10-23 | 주식회사 에이스테크놀로지 | RF Cavity Filter Robust to Degradation Due to PIMD and Method for Producing the Same |
| KR102077476B1 (en) | 2018-04-13 | 2020-02-17 | 주식회사 에이스테크놀로지 | RF Cavity Filter Robust to Degradation Due to PIMD and Method for Producing the Same |
| CN113745780A (en) * | 2020-05-29 | 2021-12-03 | 华为技术有限公司 | Cavity filter and communication equipment |
| KR20220035662A (en) * | 2020-09-14 | 2022-03-22 | 주식회사 에이스테크놀로지 | RF Cavity Filter Having a Cover Where Tuning Structure is Integrated |
| KR102440354B1 (en) | 2020-09-14 | 2022-09-05 | 주식회사 에이스테크놀로지 | RF Cavity Filter Having a Cover Where Tuning Structure is Integrated |
| CN112615116A (en) * | 2020-12-30 | 2021-04-06 | 苏州波发特电子科技有限公司 | Miniaturized 5G filter |
| CN113346215A (en) * | 2021-06-29 | 2021-09-03 | 大富科技(安徽)股份有限公司 | Resonator, filter, duplexer, multiplexer and communication equipment |
| WO2023273032A1 (en) * | 2021-06-29 | 2023-01-05 | 大富科技(安徽)股份有限公司 | Resonator, filter, duplexer, multiplexer, and communication device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170728 |