CN103094649B - Cavity body filter - Google Patents
Cavity body filter Download PDFInfo
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- CN103094649B CN103094649B CN201310028271.3A CN201310028271A CN103094649B CN 103094649 B CN103094649 B CN 103094649B CN 201310028271 A CN201310028271 A CN 201310028271A CN 103094649 B CN103094649 B CN 103094649B
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- Prior art keywords
- cavity
- resonant rod
- screw
- boss
- body filter
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/06—Cavity resonators
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Abstract
The invention discloses a kind of cavity body filter, relate to communication technology, with reach filter cavity deeply do little in the case of, improve the power capacity of wave filter and the purpose of the range of accommodation of frequency.Described cavity body filter includes the cavity of upper end open, cover plate, tuning screw and resonant rod, described resonant rod is fixed on the base plate of described cavity and is contained in described cavity, described cover plate is fixedly mounted on the opening part of described cavity, and described cover plate is provided with screw, described tuning screw coordinates with described screw and one end through described cover plate and is stretched in described cavity, wherein, it is provided with through hole in the middle of described resonant rod, described tuning screw stretches in described through hole, and the outer wall of described resonant rod is fixed with the base plate of described cavity and is connected.The present invention filter cavity deeply do little in the case of, improve the power capacity of wave filter and the range of accommodation of frequency.
Description
Technical field
The present invention relates to communication technology, particularly relate to a kind of cavity body filter.
Background technology
Wave filter is a kind of device having process effect to electromagnetic wave signal, and its Main Function is: allow useful letter
Number the most zero-decrement pass through, the reflection the biggest to garbage signal.At present, universal in base station system
Use cavity body filter that transmitting signal or reception signal are carried out frequency selection.Cavity body filter generally includes chamber
Body, resonant rod, tuning screw and cover plate.Cavity is provided with multiple cavity, and resonant rod is combined with cavity,
And be contained in cavity, cover plate is arranged on the opening part of cavity, and cover plate is provided with multiple screw, the position of screw
Put corresponding with resonant rod.Tuning screw coordinates with screw, and resonant rod is being stretched into after cover plate in its one end
In.The length stretching into resonant rod under certain power by regulating tuning screw adjusts the frequency of wave filter.
Along with the fast development of microwave radio commu, wireless telecommunications universal, small-sized to cavity body filter of operator
Change, lightweight demand more and more stronger.
In prior art, in order to reduce the volume of cavity body filter, generally the chamber of the cavity of wave filter is done deeply
Little, but along with the chamber of wave filter is done little deeply, the power capacity of wave filter and the range of accommodation of frequency also can be therewith
Diminish.Therefore, filter cavity deeply do little in the case of, how to improve power capacity and the frequency of wave filter
Range of accommodation become the technical barrier primarily solved for cavity body filter field.
Summary of the invention
The present invention provides a kind of cavity body filter, with reach filter cavity deeply do little in the case of, improve filter
The power capacity of ripple device and the purpose of the range of accommodation of frequency.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
On the one hand, it is provided that a kind of cavity body filter, including the cavity of upper end open, cover plate, tuning screw
And resonant rod, described resonant rod is fixed on the base plate of described cavity and is contained in described cavity, described lid
Plate is fixedly mounted on the opening part of described cavity, and described cover plate is provided with screw, described tuning screw and institute
State screw cooperation and one end through described cover plate and is stretched in described cavity, wherein, set in the middle of described resonant rod
Through hole, described tuning screw is had to stretch in described through hole, and the end of the outer wall of described resonant rod and described cavity
Plate is fixing to be connected.
In the implementation that the first is possible, on the base plate of described cavity, along chamber, deep direction is provided with cross section and is
The boss of annulus, the outer wall of described resonant rod is connected with the inwall of described boss.
In conjunction with the implementation that the first is possible, in the implementation that the second is possible, described boss interior
Wall is provided with female thread, and the lower end outer wall of described resonant rod is provided with and the external screw thread of described screw-internal thread fit.
In the implementation that the third is possible, described through hole top in deep direction along chamber be shaped as hexagon.
In the 4th kind of possible implementation, along chamber, the upper surface in deep direction is provided with at least described resonant rod
Two symmetrical installing holes.
In conjunction with the implementation that the first is possible, in the 5th kind of possible implementation, described resonant rod
Outer wall is connected with the inwall interference fit of described boss.
In the 6th kind of possible implementation, the close position being connected with described boss of described resonant rod is along footpath
To being outward extended with step, described step is overlapped in the top planes of described boss.
In the 7th kind of possible implementation, described resonant rod is radially provided with flange.
According to embodiments of the invention, owing to the centre of resonant rod is provided with through hole, tuning screw stretches in through hole
And the base plate of the outer wall of resonant rod and cavity is fixing is connected, therefore on deep direction, chamber, tuning screw can stretch into
To the position of the base plate close to cavity, the through hole in such resonant rod can be fully utilized to realize tuning spiral shell
The increase of bar regulation surplus, thus reach to improve the purpose of the range of accommodation of filter frequencies.So the present invention
In cavity body filter, chamber deeply do little in the case of still can by improve tuning screw regulation surplus
Realize improving the purpose of the range of accommodation of filter power capacity and frequency.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required in embodiment being described below
Accompanying drawing to be used is briefly described, it should be apparent that, the accompanying drawing in describing below is only the present invention's
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
The sectional view of the structure of the cavity body filter that Fig. 1 provides for the embodiment of the present invention；
Fig. 2 is the partial schematic diagram shown in Fig. 1；
Fig. 3 is the sectional view of resonant rod shown in Fig. 1；
The perspective view of the cavity body filter that Fig. 4 provides for the embodiment of the present invention；
Another perspective view of the cavity body filter that Fig. 5 provides for the embodiment of the present invention；
The sectional view of another structure of the cavity body filter that Fig. 6 provides for the embodiment of the present invention；
Fig. 7 is the sectional view of resonant rod shown in Fig. 6；
Fig. 8 is the partial schematic diagram shown in Fig. 6.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu ground describes, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole
Embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work
On the premise of the every other embodiment that obtained, broadly fall into the scope of protection of the invention.
As shown in figures 1 to 6, for the specific embodiment of the cavity body filter that the present invention provides, this cavity is filtered
Ripple device is single-chamber wave filter, including cavity 11, cover plate 12, tuning screw 13 and the resonant rod of upper end open
14, resonant rod 14 is fixed on the base plate 16 of cavity 11 and is contained in cavity 11, and cover plate 12 can lead to
The mode crossing screw connection or welding is fixedly mounted on the opening part of cavity 11, and cover plate 12 is provided with screw,
Tuning screw 13 coordinates with screw and one end through cover plate 12 and is stretched in cavity 11, wherein, and resonant rod 14
Centre is provided with through hole 15, and tuning screw 13 stretches in through hole 15, and the outer wall of resonant rod 14 and cavity 11
Base plate 16 fixing connect.
The cavity body filter that the embodiment of the present invention provides, owing to the centre of resonant rod 14 is provided with through hole 15, tuning
In screw rod 13 stretches into through hole 15 and the outer wall of resonant rod 14 is fixed with the base plate 16 of cavity 11 and is connected, therefore
On deep direction, chamber, tuning screw 13 can extend into the position of the base plate 16 close to cavity 11, such resonance
Through hole 15 in bar 14 can be fully utilized to realize tuning screw 13 and regulate the increase of surplus, thus reaches
Purpose to the range of accommodation improving filter frequencies.So the cavity body filter in the present invention, deeply do in chamber
In the case of little still can by improve tuning screw regulation surplus realize improve filter power capacity and
The purpose of the range of accommodation of frequency.
As shown in Figure 1, Figure 2, shown in Fig. 6 and Fig. 8, as the further improvement of above-described embodiment, cavity 11
Base plate 16 on along chamber, deep direction is provided with the boss 17 that cross section is annulus, the outer wall of resonant rod 14 and boss
The inwall of 17 is connected.The relatively easy easy realization of this connected mode, can subtract simultaneously to a certain extent
The thickness of little well floor, it is achieved the lightweight of cavity body filter.Wherein boss 17 can be with cavity 11 1
Body casting, it is also possible to welded by the later stage or other connected mode makes base plate 16 and the boss of cavity 11
17 are fixed together.
In above-described embodiment, resonant rod 14 can use with the mode of being connected of boss 17 to threaded and (join
See Fig. 1) or interference fit connection (seeing Fig. 6).When using threaded, as shown in Figures 2 and 3,
Can on the inwall of boss 17 machining internal thread 22, on the lower end outer wall of resonant rod 14 processing with interior spiral shell
The external screw thread 31 that stricture of vagina 22 coordinates.Need during installation to screw in convex by the part with external screw thread 31 of resonant rod 14
In the endoporus 21 of platform 17, it is allowed to the female thread 22 with boss 17 and is connected.Resonant rod 14 for convenience
Installation, as shown in Figure 4, the shape on the top of the through hole 15 in resonant rod 14 can be designed as by we
Hexagon, so we can be that hexagonal installation tool 41 carrys out fixing resonance bar 14 by cross section, tool
When body is installed, one end of installation tool 41 is inserted in the hexagonal hole of resonant rod 14, then rotate erector
Resonant rod 14 is screwed in the endoporus 21 with female thread 22 of boss 17 by the other end of tool 41.Can also
As it is shown in figure 5, arrange the installing hole 512 that at least two is symmetrical on the upper surface of resonant rod 14, thus
Can be by installation tool 51 fixing resonance bar 14, by two shanks 511 of installation tool 51 lower end during installation
Inserting in installing hole 512, the top of manual rotation installation tool 51 realizes the installation of resonant rod 14.
When using interference fit as shown in Figure 6 to connect, the external diameter of resonant rod 14 bottom can be designed
Must be more slightly larger than the external diameter of boss 17, when mounted, by resonant rod 14 by the way of crimping or pressing
In the endoporus 21 of lower end press-in boss 17, it is achieved resonant rod 14 is connected with the interference fit of boss 17.
As shown in Figure 3 and Figure 7, when fixing resonance bar 14, in order to be able to realize resonant rod 14 and boss 17
Installation spacing, setting can be extended radially outward at resonant rod 14 near the position being connected with boss 17
Step 32, step 332 is overlapped in the top planes of boss 17.So screw at resonant rod 14 or be pressed into
Time in the endoporus 21 of boss 17, prove to install when in the top planes that step 32 is overlapped on boss 17
Put in place, it is to avoid installed and shallow cause not firmly or the accuracy deeply affecting frequency was installed.Wherein step 32
Preferably one-body molded with resonant rod 14.
Due to filter cavity deeply do little after, frequency can improve therewith, in order to frequency is dropped to required frequency range,
As shown in Figure 3 and Figure 7, flange 18 is radially set at resonant rod 14.Flange 18 preferably with resonance
Bar 14 is one-body molded.
As shown in figures 1 to 6, tuning screw 13 is connected with nut 19, so at regulation tuning spiral shell
During bar 13, first being unscrewed by nut 19, when being adjusted to the position needed, tightening nut 19 is by adjusting screw rod
13 are fixed together with cover plate 12.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to
This, any those familiar with the art, in the technical scope that the invention discloses, can readily occur in
Change or replacement, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention
Should be as the criterion with described scope of the claims.
Claims (6)
1. a cavity body filter, cavity, cover plate, tuning screw and resonant rod including upper end open, described resonant rod is fixed on the base plate of described cavity and is contained in described cavity, described cover plate is fixedly mounted on the opening part of described cavity, and described cover plate is provided with screw, described tuning screw coordinates with described screw and one end through described cover plate and is stretched in described cavity, it is characterized in that, it is provided with through hole in the middle of described resonant rod, described tuning screw stretches in described through hole, and the outer wall of described resonant rod is fixed with the base plate of described cavity and is connected；
On the base plate of described cavity, along chamber, deep direction is provided with the boss that cross section is annulus, and the outer wall of described resonant rod is connected with the inwall of described boss；
The inwall of described boss is provided with female thread, and the lower end outer wall of described resonant rod is provided with and the external screw thread of described screw-internal thread fit.
Cavity body filter the most according to claim 1, it is characterised in that described through hole top in deep direction along chamber be shaped as hexagon.
Cavity body filter the most according to claim 1, it is characterised in that the upper surface in deep direction is provided with the installing hole that at least two is symmetrical to described resonant rod along chamber.
Cavity body filter the most according to claim 1, it is characterised in that described resonant rod is connected with described boss interference fit.
5. according to the cavity body filter according to any one of claim 1-4, it is characterised in that described resonant rod has extended radially outward step near the position being connected with described boss, and described step is overlapped in the top planes of described boss.
Cavity body filter the most according to claim 1, it is characterised in that described resonant rod is radially provided with flange.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310028271.3A CN103094649B (en) | 2013-01-25 | 2013-01-25 | Cavity body filter |
| PCT/CN2014/071469 WO2014114265A1 (en) | 2013-01-25 | 2014-01-26 | Cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310028271.3A CN103094649B (en) | 2013-01-25 | 2013-01-25 | Cavity body filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103094649A CN103094649A (en) | 2013-05-08 |
| CN103094649B true CN103094649B (en) | 2016-12-28 |
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ID=48206962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310028271.3A Active CN103094649B (en) | 2013-01-25 | 2013-01-25 | Cavity body filter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103094649B (en) |
| WO (1) | WO2014114265A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094649B (en) * | 2013-01-25 | 2016-12-28 | 华为技术有限公司 | Cavity body filter |
| CN103650237B (en) * | 2013-08-09 | 2015-12-30 | 华为技术有限公司 | A kind of filter tuning apparatus and filter |
| CN203746999U (en) * | 2013-11-25 | 2014-07-30 | 华为技术有限公司 | Filter |
| CN112952324A (en) * | 2021-04-02 | 2021-06-11 | 京信射频技术(广州)有限公司 | Filter, resonator and communication device |
| CN113285189A (en) * | 2021-04-20 | 2021-08-20 | 武汉德威斯电子技术有限公司 | Totally enclosed wave filter and communication equipment for aerospace |
| CN113236650A (en) * | 2021-04-20 | 2021-08-10 | 武汉凡谷电子技术股份有限公司 | Locking type filter tuning screw device and filter |
| IT202100012983A1 (en) * | 2021-05-19 | 2022-11-19 | Commscope Italy Srl | FIXING ELEMENT FOR THE RESONATOR OF A RADIOFREQUENCY FILTER |
| CN113851800B (en) * | 2021-08-13 | 2022-12-13 | 武汉凡谷电子技术股份有限公司 | Filter and manufacturing method thereof |
| CN116112514B (en) * | 2021-11-11 | 2024-08-02 | 广州汽车集团股份有限公司 | Vehicle remote diagnosis system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841075A (en) * | 2009-10-13 | 2010-09-22 | 安徽省大富机电技术有限公司 | Resonant tube |
| CN102255124A (en) * | 2011-04-22 | 2011-11-23 | 深圳市大富科技股份有限公司 | Cavity filter, communication equipment, communication equipment cover plate component and tuning structure |
| CN102354780A (en) * | 2011-07-22 | 2012-02-15 | 深圳市大富科技股份有限公司 | Cavity filter and communication device |
| CN202564517U (en) * | 2012-04-28 | 2012-11-28 | 成都泰格微波技术股份有限公司 | Novel low frequency cavity filter |
| CN203119067U (en) * | 2013-01-25 | 2013-08-07 | 华为技术有限公司 | Cavity filter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546853B (en) * | 2009-04-29 | 2012-12-19 | 上海华为技术有限公司 | Die-casting diplexer and die-casting method |
| CN202167594U (en) * | 2011-07-01 | 2012-03-14 | 深圳市大富科技股份有限公司 | Dielectric filter |
| CN103094649B (en) * | 2013-01-25 | 2016-12-28 | 华为技术有限公司 | Cavity body filter |
-
2013
- 2013-01-25 CN CN201310028271.3A patent/CN103094649B/en active Active
-
2014
- 2014-01-26 WO PCT/CN2014/071469 patent/WO2014114265A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841075A (en) * | 2009-10-13 | 2010-09-22 | 安徽省大富机电技术有限公司 | Resonant tube |
| CN102255124A (en) * | 2011-04-22 | 2011-11-23 | 深圳市大富科技股份有限公司 | Cavity filter, communication equipment, communication equipment cover plate component and tuning structure |
| CN102354780A (en) * | 2011-07-22 | 2012-02-15 | 深圳市大富科技股份有限公司 | Cavity filter and communication device |
| CN202564517U (en) * | 2012-04-28 | 2012-11-28 | 成都泰格微波技术股份有限公司 | Novel low frequency cavity filter |
| CN203119067U (en) * | 2013-01-25 | 2013-08-07 | 华为技术有限公司 | Cavity filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103094649A (en) | 2013-05-08 |
| WO2014114265A1 (en) | 2014-07-31 |
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