CN208173760U - A kind of cavity body filter being adjustable stiffness of coupling - Google Patents
A kind of cavity body filter being adjustable stiffness of coupling Download PDFInfo
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- CN208173760U CN208173760U CN201820508606.XU CN201820508606U CN208173760U CN 208173760 U CN208173760 U CN 208173760U CN 201820508606 U CN201820508606 U CN 201820508606U CN 208173760 U CN208173760 U CN 208173760U
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- stiffness
- body filter
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- 230000008859 change Effects 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
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Abstract
A kind of cavity body filter being adjustable stiffness of coupling, including shell and cover board, multiple arranged side by side and spaced resonant cavity is provided in shell, resonance piece is fixedly installed on each resonant cavity, it is of coupled connections between each resonance piece by different coupling pieces, a semicircle cambered surface is each provided on two opposite sides of the resonant cavity, semicircle cambered surface on two adjacent resonant cavities encloses out a cylindrical adjusting cavity, it is up and down in adjusting cavity to be provided with adjuster, adjuster is threaded through on the cover board, the depth in adjusting cavity is extend by change adjuster to change the stiffness of coupling between two neighboring resonant cavity.The utility model provides a kind of cavity body filter for being adjustable stiffness of coupling, and neatly the stiffness of coupling between resonant cavity can be adjusted, to meet the communication needs of unlike signal.
Description
Technical field
The utility model relates to cavity body filter field, specifically a kind of cavity filtering for being adjustable stiffness of coupling
Device.
Background technique
Filter is a kind of typical frequency selection device, it can effectively inhibit garbage signal, prevent it from passing through
Filter, only useful signal pass through filter, and therefore, the superiority and inferiority of performance of filter directly influences entire communication system
Quality, be modern microwave, vital device in millimeter-wave communication system.
Cavity body filter is a kind of very important filter, compared with the filter of other properties, sound construction, and performance
Reliable and stable, small in size, Q value is moderate, and high side parasitic passband farther out and perfect heat-dissipating, can be used for relatively high power and frequency.
There are mainly two types of for coupled structure in existing cavity body filter.
The first is as shown in fig. 7, mainly use resonant rod 110, by adding between two conventional resonance chambers 120 being separated by
Enter the coupling flown between the two conventional resonance chambers 120 of realization of bar 130 by the earth-free metal of dielectric support.This mechanism needs additional
Component, bar 130 like flying, support base 140, die casting cavity body is also required to process the card slot without gradient, this will bring it is higher plus
Product reliability is used and reduced to expenses of labour；Fly bar 130 and be mounted in inside cavity, stiffness of coupling is non-adjustable after cover board installation, can only tear lid open
Plate optimization, influences efficiency；Arrangement system conventional resonance chamber 120 is also required to occupy biggish volume, causes space utilization rate low, unfavorable
In the development of device miniaturization；And since support base 140 is a kind of nonmetallic materials, and winged bar 130 and cavity are metal materials
Material, in temperature change, the support base coefficient of expansion is big, be easy to cause winged bar fastening failure to be displaced in the horizontal direction in, to coupling amount
Cause extreme influence；What is more, and support base generates thawing when product does high-power, directly results in scrap of the product.
Second as shown in figure 8, have coupling screw rod 150, lid using common resonator bar 110 between two conventional resonance chambers 120
There is threaded hole on plate, coupling debugging screw rod is fixed on the cover board with nut 160 by cover board threaded hole, passed through and couple screw rod 150
Go deep into cavity depth adjust cavity coupling.But it is relatively more to adjust screw head portion to occupy cover board space, it is easy to occupy other parts
Placement, such as lighting protection plate, the installation of control panel, LNA plate that tower is put, reduce other parts installation optional position；Miniaturization
Easily interfere with remaining components such as head of screw when cavity；It is uncontrollable to debug depth, enter when debugging it is too deep cross with cavity muscle position into
When, may cause high-power signal by when strike sparks the phenomenon that.
Utility model content
In order to solve deficiency in the prior art, the utility model provides a kind of cavity filtering for being adjustable stiffness of coupling
Device can neatly be adjusted the stiffness of coupling between resonant cavity, to meet the communication needs of unlike signal.
To achieve the goals above, the concrete scheme that the utility model uses for：A kind of cavity being adjustable stiffness of coupling
Filter, including shell and cover board, are provided with multiple arranged side by side and spaced resonant cavity in shell, on each resonant cavity
It is fixedly installed resonance piece, is of coupled connections between each resonance piece by different coupling pieces, two phases of the resonant cavity
Pair side on be each provided with a semicircle cambered surface, the semicircle cambered surface on two adjacent resonant cavities enclose out one it is cylindrical
Adjusting cavity, up and down in adjusting cavity to be provided with adjuster, adjuster is threaded through on the cover board, is protruded by changing adjuster
Depth in adjusting cavity changes the stiffness of coupling between two neighboring resonant cavity.
The adjuster is set as adjusting screw.
The internal diameter of the adjusting cavity is greater than the outer diameter for adjusting screw.
Connecting screw hole is offered on the resonance piece and/or is fixedly installed weld part.
The open upper end of the resonant cavity.
The side of the resonant cavity is opened wide, and the resonance piece is horizontally disposed and stretches out from the open side of resonant cavity.
The resonant cavity is divided into two groups, and every group of resonant cavity constitutes an access, is connected between two paths by connection sheet
It connects.
Also be equipped with input port, the first output port and second output terminal mouth on the shell, input port with wherein
One access electrical connection, the first output port are connected with the connection sheet, and second output terminal mouth is electrically connected with another access
It connects.
The resonant cavity is fixedly connected by fixing bolt with the shell.
The working principle of the utility model is：Stiffness of coupling between two adjacent resonant cavities is mainly big by coupling area
Small and gap width influence, specifically the more big then stiffness of coupling of coupling area is higher, the smaller then stiffness of coupling of gap width
It is higher.There is very high requirement since compact radio frequency device space is limited, and to stiffness of coupling, it is strong in order to improve coupling
Degree, the width in gap should be sufficiently small, but stiffness of coupling can not be adjusted in this case, it is difficult to meet various different letters
Number transmission demand.Therefore adjuster is provided with stiffness of coupling is adjusted, but because between two resonant cavities away from
Small from too, adjuster can not be deep into wherein, so semicircle cambered surface is arranged on the side plate of resonant cavity, make two adjacent resonators
On semicircle cambered surface enclose out an adjusting cavity, and then be deep into adjuster in adjusting cavity, specifically adjuster
Adjusting rod be deep into adjusting cavity.When adjuster is up and down, the depth of adjusting rod changes, to change two
The size of a resonant cavity opposite face is finally adjusted the stiffness of coupling between two resonant cavities.
Beneficial effect：
1, the utility model is provided with adjuster between two neighboring resonant cavity, and the height by changing adjuster can be with
The stiffness of coupling between two resonant cavities is adjusted, and adjuster is arranged on shell, after filter integral installation finishes
Stiffness of coupling can also be adjusted, it is very convenient, it will be repeated brought by dismounting filter when avoiding each adjusting
High working strength and inefficient problem；
2, the distance between the utility model resonant cavity can be set enough to small, then be adjusted using two arc surface compositions
It saves chamber and meets feelings actually required in the upper limit of stiffness of coupling adjustable extent to expand the adjustable extent of stiffness of coupling
Under condition, the depth of resonant cavity can be set than shallower, so that the volume of filter entirety is reduced, to meet compact radio frequency
Requirement of the device for piece volumes；
3, the utility model uses the resonance piece of sheet, the occupancy to vertical space can be further decreased, thus into one
Step reduces the volume of filter entirety.
Detailed description of the invention
Fig. 1 is this overall structure top view；
Fig. 2 is the structural schematic diagram of the one of access of the utility model；
Fig. 3 is the set-up mode top view of the resonant cavity of the utility model, resonance piece, adjuster and coupling piece；
Fig. 4 is the set-up mode side view of the resonant cavity of the utility model, resonance piece, adjuster and coupling piece；
Fig. 5 is the set-up mode main view of the resonant cavity of the utility model, resonance piece, adjuster and coupling piece；
Fig. 6 is the concrete structure schematic diagram of the resonant cavity of the utility model；
Fig. 7 is the schematic diagram of the first coupled structure in the prior art；
Fig. 8 is the schematic diagram of second of coupled structure in the prior art.
Appended drawing reference：1, resonant cavity, 101, backboard, 102, bottom plate, 103, side plate, 104, fixing threaded hole, 2, adjuster, 3,
Resonance piece, 301, vertical joints, 4, coupling piece, 5, connection sheet, 6, input port, the 7, first output port, the 8, second output
Port, 9, shell, 10, connecting screw hole, 11, weld part, 12, cover board, 13, semicircle cambered surface, 110, resonant rod, 120, conventional resonance
Chamber, 130, winged bar, 140, support base, 150, coupling screw rod, 160, nut.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1 is please referred to 6.A kind of cavity body filter being adjustable stiffness of coupling, including shell 9 and cover board 12.
Multiple arranged side by side and spaced resonant cavity 1 is provided in shell 9.Resonant cavity 1 includes the backboard of integrally connected
101, bottom plate 102 and two side plates 203, insole board 102 are rectangular slab, and two side plates 103 are respectively perpendicular and are installed in bottom plate
102 both ends, backboard 101 connect two side plates 103, and the height of backboard 101 is lower than the height of side plate 103, humorous
The front end and upper end of vibration chamber 1 are then opened wide.It is also provided with two fixing threaded holes 104 on bottom plate 102, is opened up in the bottom of shell 9
There is the installation screw with 104 Corresponding matching of fixing threaded hole, passes through matching for a fixing bolt and fixing threaded hole 104 and installation screw
Resonant cavity 1 is fixedly mounted on inside shell 9 by conjunction.
It is each provided with a semicircle cambered surface 13 on two opposite sides of resonant cavity 1, specifically in two side plates
A semicircle cambered surface 13 is each provided on 103, and semicircle cambered surface 13 concaves towards the inside of resonant cavity 1.Two adjacent resonant cavities 1
On semicircle cambered surface 13 can enclose out a cylindrical adjusting cavity, it is up and down in adjusting cavity to be provided with adjuster 2, adjust
Device 2 is set as adjusting screw, adjusts adjusting rod and head that screw includes integrally connected, adjusting rod is cylindrical, adjusting rod
Outer diameter is less than the internal diameter of adjusting cavity.The part on head is provided with external screw thread on adjusting rod, offered on cover board 12 with
Adjuster 2, is threaded through on cover board 12 by the one-to-one screw hole of adjuster 2 by the cooperation of external screw thread and screw hole on adjusting rod 2.
Resonance piece 3 is fixedly installed on each resonant cavity 1, resonance piece 3 is horizontally disposed, and resonance piece 3 is by vertically connecting
Socket part 301 is fixedly connected with the bottom plate 102 of resonant cavity 1, and resonance piece 3 and vertical joints 301 are integrally formed.Resonance
Connecting screw hole 10 is offered on piece 3 and/or is fixedly installed weld part 11.Between each resonance piece 3 by different coupling pieces 4 into
Row is of coupled connections, and the both ends of coupling piece 4 can match the company of realization Yu resonance piece 3 by attachment screw with connecting screw hole 10
It connects, it can also be by the way that the connection of realization Yu resonance piece 3 be welded and fixed with weld part 11.
In the present embodiment, resonant cavity 1 is provided with nine altogether, and it is two groups that nine resonant cavities 1, which are divided to, every group of each structure of resonant cavity 1
At an access.
Wherein one group includes 5 resonant cavities 1, from left to right respectively with the 5th resonant cavity, the 6th resonant cavity, the 7th resonance
Chamber, the 8th resonant cavity and the 9th resonant cavity are indicated.The resonance piece on resonance piece 3 and the 7th resonant cavity on 5th resonant cavity
3 are of coupled connections by a coupling piece 4, and on the resonance piece 3 and the 7th resonant cavity on the coupling piece 4 and the 5th resonant cavity
By being welded and fixed between resonance piece 3.Resonance piece 3 on 8th resonant cavity passes through on a coupling piece 4 and the 9th resonant cavity
Resonance piece 3 be of coupled connections, pass through connection bolt and connecting screw hole between the resonance piece 3 on the coupling piece 4 and the 8th resonant cavity
10 cooperation achieves a fixed connection, by being welded and fixed between the resonance piece 3 on the coupling piece 4 and the 9th resonant cavity.
Another set includes four resonant cavities 1, from left to right respectively with the first resonant cavity, the second resonant cavity, third resonance
Chamber and the 4th resonant cavity indicate.The resonance piece 3 on resonance piece 3 and the second resonant cavity on first resonant cavity passes through a coupling
Piece 4 is of coupled connections, and is all made of between the resonance piece 3 on resonance piece 3 and the second resonant cavity on the coupling piece 4 and the first resonant cavity
It is welded and fixed.Resonance piece 3 on second resonant cavity also passes through 4 company of coupling of coupling piece with the resonance piece 3 on the 4th resonant cavity
It connects, the resonance piece 3 on the coupling piece 4 and the second resonant cavity passes through connection spiral shell also between the resonance piece 3 on the 4th resonant cavity
The cooperation with connecting screw hole 10 is followed closely to achieve a fixed connection.
It is connected between two paths by connection sheet 5, specifically one end of connection sheet 5 is by way of being welded and fixed
Be fixedly connected with the resonance piece 3 on the 4th resonant cavity, the other end of connection sheet 5 by way of being welded and fixed with the 5th resonance
Resonance piece 3 on chamber is fixedly connected.
Also be equipped with input port 6, the first output port 7 and second output terminal mouth 8 on shell 9, input port 6 with connect
Resonance piece 3 on 8th resonant cavity is fixedly connected with a coupling piece 4 of the resonance piece 3 on the 9th resonant cavity, the first output end
Mouthfuls 7 are connected with connection sheet 5, second output terminal mouth 8 with it is humorous on the resonance piece 3 and the second resonant cavity that connect on the first resonant cavity
One coupling piece 4 of vibration piece 3 is fixedly connected.
The utility model can be adjusted the stiffness of coupling between two neighboring resonant cavity 1, and specific principle is as follows.
Stiffness of coupling between two adjacent resonant cavities 1 is mainly influenced by coupling area size and gap width, tool
Body says that the more big then stiffness of coupling of coupling area is higher, the smaller then stiffness of coupling of gap width is higher.Due to compact radio frequency device
Part space is limited, and has very high requirement to stiffness of coupling, and in order to improve stiffness of coupling, the width in gap should be enough
It is small, but stiffness of coupling can not be adjusted in this case, it is difficult to meet the transmission demand of various unlike signals.Therefore it is arranged
Stiffness of coupling is adjusted in adjuster 2, but because the distance between two resonant cavities 1 are too small, adjuster 2 can not be deep
Enter to wherein, so semicircle cambered surface 13 is arranged on the side plate 103 of resonant cavity 1, makes the semicircle cambered surface in two adjacent resonators 1
13 enclose out an adjusting cavity, and then are deep into adjuster 2 in adjusting cavity, specifically the adjusting rod of adjuster 2
It is deep into adjusting cavity.When adjuster 2 is up and down, the depth of adjusting rod changes, to change two resonance
The size of 1 opposite face of chamber is finally adjusted the stiffness of coupling between two resonant cavities 1.Specifically, change and adjust
It is realized when the depth of device 2 by the head of turning adjusting screw, utilizes the screw hole phase on the screw thread and shell 12 on adjusting rod
Cooperation moves up adjuster 2.
By above-mentioned regulative mode, after filter integral installation finishes can also to two neighboring resonant cavity 1 it
Between stiffness of coupling be adjusted, it is very convenient, senior engineer brought by dismounting filter will be repeated when avoiding each adjusting
Make intensity and inefficient problem.At the same time it can also by the distance between resonant cavity 1 can be set very little improves coupling
The upper limit for closing intensity adjustable extent can reduce resonant cavity 1 after the upper limit of stiffness of coupling adjustable extent meets needs
Depth, matched with the resonance piece 3 of horizontally disposed sheet, can reduce the space hold of cavity body filter entirety, especially
It is space hold in vertical direction, to meet the needs of high-frequency communication.
In addition, the resonance piece 3 of the utility model, the concrete shape of coupling piece 4 and connection sheet 5 and size are to electric property
Influence is all very small, therefore can be flexibly adjusted according to special case when practical application in shell 9.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (9)
1. a kind of cavity body filter for being adjustable stiffness of coupling, including shell（9）And cover board（12）, in shell（9）Inside it is provided with
Multiple arranged side by side and spaced resonant cavity（1）, each resonant cavity（1）On be fixedly installed resonance piece（3）, each resonance piece
（3）Between pass through different coupling pieces（4）It is of coupled connections, it is characterised in that：The resonant cavity（1）Two opposite sides
A semicircle cambered surface is each provided on face（13）, adjacent two resonant cavities（1）On semicircle cambered surface（13）Enclose out a circle
Cylindrical adjusting cavity, it is up and down in adjusting cavity to be provided with adjuster（2）, adjuster（2）It is threaded through the cover board（12）On, lead to
Cross change adjuster（2）The depth extending into adjusting cavity changes two neighboring resonant cavity（1）Between stiffness of coupling.
2. a kind of cavity body filter for being adjustable stiffness of coupling as described in claim 1, it is characterised in that：The adjuster
（2）It is set as adjusting screw.
3. a kind of cavity body filter for being adjustable stiffness of coupling as claimed in claim 2, it is characterised in that：The adjusting cavity
Internal diameter is greater than the outer diameter for adjusting screw.
4. a kind of cavity body filter for being adjustable stiffness of coupling as described in claim 1, it is characterised in that：The resonance piece
（3）On offer connecting screw hole（10）And/or it is fixedly installed weld part（11）.
5. a kind of cavity body filter for being adjustable stiffness of coupling as described in claim 1, it is characterised in that：The resonant cavity
（1）Open upper end.
6. a kind of cavity body filter for being adjustable stiffness of coupling as described in claim 1, it is characterised in that：The resonant cavity
（1）Side open wide, the resonance piece（3）It is horizontally disposed and from resonant cavity（1）Open side stretch out.
7. a kind of cavity body filter for being adjustable stiffness of coupling as described in claim 1, it is characterised in that：The resonant cavity
（1）It is divided into two groups, every group of resonant cavity（1）An access is constituted, passes through connection sheet between two paths（5）It is connected.
8. a kind of cavity body filter for being adjustable stiffness of coupling as claimed in claim 7, it is characterised in that：The shell（9）
On be also equipped with input port（6）, the first output port（7）With second output terminal mouth（8）, input port（6）With one of them
Access electrical connection, the first output port（7）With the connection sheet（5）It is connected, second output terminal mouth（8）With another access
Electrical connection.
9. a kind of cavity body filter for being adjustable stiffness of coupling as described in claim 1, it is characterised in that：The resonant cavity
（1）Pass through fixing bolt and the shell（9）It is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820508606.XU CN208173760U (en) | 2018-04-11 | 2018-04-11 | A kind of cavity body filter being adjustable stiffness of coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820508606.XU CN208173760U (en) | 2018-04-11 | 2018-04-11 | A kind of cavity body filter being adjustable stiffness of coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208173760U true CN208173760U (en) | 2018-11-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820508606.XU Withdrawn - After Issue CN208173760U (en) | 2018-04-11 | 2018-04-11 | A kind of cavity body filter being adjustable stiffness of coupling |
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| Country | Link |
|---|---|
| CN (1) | CN208173760U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493538A (en) * | 2018-04-11 | 2018-09-04 | 广东通宇通讯股份有限公司 | A kind of cavity body filter that can adjust stiffness of coupling |
| CN109663679A (en) * | 2019-01-21 | 2019-04-23 | 江苏大学 | A kind of electrostatic atomizer of low frequency ultrasound |
-
2018
- 2018-04-11 CN CN201820508606.XU patent/CN208173760U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493538A (en) * | 2018-04-11 | 2018-09-04 | 广东通宇通讯股份有限公司 | A kind of cavity body filter that can adjust stiffness of coupling |
| CN108493538B (en) * | 2018-04-11 | 2024-04-16 | 广东通宇通讯股份有限公司 | Cavity filter capable of adjusting coupling strength |
| CN109663679A (en) * | 2019-01-21 | 2019-04-23 | 江苏大学 | A kind of electrostatic atomizer of low frequency ultrasound |
| CN109663679B (en) * | 2019-01-21 | 2020-09-25 | 江苏大学 | Low-frequency ultrasonic electrostatic atomizing nozzle |
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Granted publication date: 20181130 Effective date of abandoning: 20240416 |
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| AV01 | Patent right actively abandoned |
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