CN206907897U - Cavity body filter and its adjustable resonant rod of coupling - Google Patents
Cavity body filter and its adjustable resonant rod of coupling Download PDFInfo
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- CN206907897U CN206907897U CN201720433956.XU CN201720433956U CN206907897U CN 206907897 U CN206907897 U CN 206907897U CN 201720433956 U CN201720433956 U CN 201720433956U CN 206907897 U CN206907897 U CN 206907897U
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- resonant rod
- adjustable
- resonance plate
- coupling
- segmental arc
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Abstract
The first resonant rod and the second resonant rod are provided with the filter cavity body of the utility model cavity body filter, at least one resonant rod is using the adjustable resonant rod of coupling, the utility model, which couples adjustable resonant rod, to be included resonant rod and sets the resonance plate on resonant rod top, perforate is set to connect resonant rod internal resonance chamber among the resonance plate, the resonance plate includes the concentric circles segmental arc consistent with the radius that resonant rod is concentric, and the special-shaped segmental arc of the radius consecutive variations of connection concentric circles segmental arc.The utility model couples the resonance plate of adjustable resonant rod using eccentric or polymorphic structure, pass through rotary harmonic bar, the distance between each adjacent resonance plate can be changed, resonance plate side wall and adjacent resonance plate side wall change apart from generation rule, capacitive required for producing, inductive coupled or cross-linked effect.
Description
【Technical field】
Field of microwave communication is the utility model is related to, more particularly, to a kind of cavity body filter and its adjustable resonance of coupling
Bar.
【Background technology】
Wave filter is a kind of frequency filter device, i.e., the signal of the frequency range of needs is selected, to not needing frequency range
Signal is suppressed, and wave filter is widely used in the communication fields such as radio frequency, microwave.It is most widely used in radio frequency, microwave frequency band at present
General wave filter is coaxial cavity filter, and it forms the phase by adjusting the stiffness of coupling between the resonant frequency of multiple chambers and chamber
The working characteristics of prestige.To cavity resonant frequency regulation typically by adjust tuning screw go deep into cavity depth complete, chamber it
Between cross-couplings generally by controlling capacitive cross coupling between resonant rod or the cross-linked coupling amount size of perception to control
System.
Traditional capacitive cross coupling is typically using flying bar structure, as shown in figure 1, using common resonator bar 110, by
Added between two resonators 120 being separated by and bar 130 is flown by the earth-free metal of dielectric support realized between two resonators
Signal couples.Such capacitive cross coupling needs additional components, and bar 130 like flying, support base 140, die casting cavity body are also required to process
Without the neck of gradient, this will bring higher processing charges and reduces product reliability；Fly bar 130 and be mounted in inside cavity, cover
Stiffness of coupling is non-adjustable after plate installation, can only tear cover plate optimization open, influence efficiency；Arrangement resonator is also required to take larger body
Product, causes low space utilization, is unfavorable for the development of device miniaturization；And because support base 140 is a kind of nonmetallic materials,
And it is metal material to fly bar 130 and cavity, in temperature change, the support base coefficient of expansion is big, easily causes winged bar fastening failure
It is displaced in the horizontal direction in, extreme influence is caused to coupling amount；What is more, and support base produces thawing when product does high-power, directly
Connecing causes product rejection.
The most frequently used perceptual cross-couplings or inductive coupled to couple debugging screw-rod structure, as shown in Fig. 2 using common humorous
Shake bar 110, there is coupling screw rod 150 between two resonators 120, there is screwed hole on cover plate, and coupling debugging screw rod passes through cover plate screw thread
Hole, with nut 160 fix on the cover board, by couple screw rod 150 go deep into cavity depth adjust cavity couple.But adjust screw head
It is relatively more that portion takes cover plate space, it is easy to takes the placement of other parts, such as lighting protection plate, control panel that tower is put, the peace of LNA plates
Dress, reduce the optional position of other parts installation；Easily interfere when minimizing cavity with remaining parts such as head of screw；Debugging is deep
Spend it is uncontrollable, enter during debugging it is too deep cross with cavity muscle position into when, may cause high-power signal by when occur striking sparks show
As.
Therefore it provides a kind of stiffness of coupling is adjustable, debugging efficiency is high, accuracy is high, space availability ratio is high, minimizes, production
The adjustable resonant rod of coupling and cavity body filter that product cross-couplings are reliably stablized are actually necessary.
【The content of the invention】
The purpose of this utility model, which is to provide, a kind of can produce and adjust capacitive and inductive coupled coupling value, improve
The cross-linked reliability of product, a kind of adjustable resonant rod of coupling of stabilization of raising product space utilization rate and cavity filtering
Device.
To realize the utility model purpose, there is provided following technical scheme：
The utility model provides a kind of adjustable resonant rod of coupling, its resonance for including resonant rod and setting resonant rod top
Disk, resonance plate centre set perforate to connect resonant rod internal resonance chamber, and the resonance plate includes the radius one concentric with resonant rod
The concentric circles segmental arc of cause, and the special-shaped segmental arc of the radius consecutive variations of connection concentric circles segmental arc.The utility model coupling is adjustable
The resonance plate of formula resonant rod is using eccentric or polymorphic structure, by rotary harmonic bar, can change between each adjacent resonance plate away from
From resonance plate side wall changes with adjacent resonance plate side wall apart from generation rule, capacitive, inductive coupled or friendship required for producing
Pitch the effect of coupling.
Preferably, the special-shaped segmental arc ratio accounts for the 1/4~1/2 of the whole resonance plate.To reach two required resonance
Couple variations only account for resonance plate without influenceing the change with being coupled between other 3rd resonant rod, resonant rod abnormity segmental arc between bar
1/4 to 1/2 or so, remainder also keeps concentric structure with resonant rod internal diameter.
Preferably, the special-shaped segmental arc ratio accounts for the 1/2 of the whole resonance plate, the radius by connected concentric circles segmental arc one end
Continuous become continuously becomes the as low as isocentric circular arc section other end and connected to stage casing, then radius greatly.
Preferably, the resonant rod bottom is provided with adjustable column, is convenient to adjust the resonant rod.
Preferably, the regulation column bottom is provided with type groove, can be operated by the instrument being adapted and very convenient adjust this
Resonant rod.
Preferably, the type groove is plum blossom groove.
Preferably, the adjustable column includes positioning section and the thread segment of lower section, and the structure can easily be accommodated while and convenient fastening
Positioning.
The utility model also provides a kind of cavity body filter, and the first resonant rod and the second resonance are provided with filter cavity body
Bar, at least one resonant rod uses couples adjustable resonant rod as described above.By rotary harmonic bar, each phase can be changed
The distance between adjacent resonance plate, resonance plate side wall change with adjacent resonance plate side wall apart from generation rule, required for producing
Wave filter capacitive cross coupling.
Preferably, two or more adjustable resonant rods of coupling are provided with the cavity body filter.
Preferably, the bottom of the filter cavity is provided with via, the adjustable column that the adjustable resonant rod bottom of the coupling is set
Installed through the via.
Preferably, the positioning section of the adjustable column is adapted with via, and the thread segment of the adjustable column passes through the via, and and spiral shell
Female immovable fitting.
Prior art is contrasted, the utility model has advantages below：
The utility model couples the resonance plate of adjustable resonant rod using eccentric or polymorphic structure, by rotary harmonic bar,
The distance between each adjacent resonance plate can be changed, resonance plate side wall changes with adjacent resonance plate side wall apart from generation rule, production
Wave filter capacitive cross coupling required for raw, without installing winged bar, support base again, it is entirely avoided fly bar structure unlike material
Between high/low temperature when bring reliability deficiency, after cover plate installation the prior art such as non-adjustable a series of deficiencies；Pass through control
The wave filter that system is coupled required for adjustable resonance plate spacing produces is inductive coupled, couples debugging screw rod without installing, reduces
Cover plate space occupancy rate, screw interference problem；Powder smelting can be used with the adjustable resonant rod of coupling of the present utility model, during batch
The technologies such as gold produce, and can reduce part production, the assembly cost of product without flying bar and coupling screw rod；
【Brief description of the drawings】
Fig. 1 is one of prior art cavity body filter structural representation；
Fig. 2 is two structural representations of prior art cavity body filter；
Fig. 3 is the sectional view that the utility model couples adjustable resonant rod；
Fig. 4 is the top view that the utility model couples adjustable resonant rod；
Fig. 5 is the sectional view of the utility model cavity body filter；
Fig. 6 is the Principles of Regulation schematic diagram of the utility model cavity body filter；
Fig. 7 is that the utility model cavity body filter emulates data graphs.
【Embodiment】
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, with Structure Figure and embodiment,
The utility model is further elaborated.It should be appreciated that this accompanying drawing is only preferred embodiment of the present utility model,
Any formal limitation is not done to the utility model structure.It is every to be implemented according to the technical essence of the utility model to more than
Any simple modification, equivalent change and modification for being made of example, in the range of still falling within the technical solution of the utility model.This theory
The content not being described in detail in bright belongs to prior art known to professional and technical personnel in the field.
Fig. 3~4 are referred to, the utility model provides a kind of adjustable resonant rod of coupling, and it includes resonant rod 210 and set
The resonance plate 220 on resonant rod top, resonance plate centre set perforate to connect resonant rod internal resonance chamber 211, the resonance plate 220
Including the concentric circles segmental arc 221 consistent with the radius that resonant rod is concentric, and connect the radius consecutive variations of concentric circles segmental arc
Special-shaped segmental arc 222.
The special-shaped ratio of segmental arc 222 accounts for the 1/4~1/2 of the whole resonance plate, and remainder is also kept with resonant rod internal diameter
Concentric structure.So, between two resonant rods couple variations without influenceing and the change that is coupled between other 3rd resonant rod.
In the present embodiment, the special-shaped segmental arc ratio accounts for the 1/2 of the whole resonance plate, and radius is continuous by connected concentric circles segmental arc one end
Become and continuously become the as low as isocentric circular arc section other end to stage casing, then radius greatly and connect.
The resonant rod bottom is provided with adjustable column, and the adjustable column includes positioning section 212 and the thread segment 213 of lower section, the regulation
Column bottom is provided with type groove, by the instrument being adapted can operate it is very convenient adjust the resonant rod, in the present embodiment, should
Type groove is plum blossom groove 214.The structure can easily be accommodated while and convenient fastening positioning.
The utility model couples the resonance plate of adjustable resonant rod using eccentric or polymorphic structure, by rotary harmonic bar,
The distance between each adjacent resonance plate can be changed, resonance plate side wall changes with adjacent resonance plate side wall apart from generation rule, production
Capacitive required for raw, inductive coupled or cross-linked effect.
Fig. 3~6 are please referred to, the utility model cavity body filter, the first resonant rod are provided with filter cavity 310
320 and second resonant rod 330, in the present embodiment, the first resonant rod 320 and the second resonant rod 330 are using as described above
Couple adjustable resonant rod.The bottom of the filter cavity 310 is provided with via 311, and the adjustable resonant rod bottom of the coupling is set
Adjustable column installed through the via, the size of via 311 is bigger than the thread segment 213 of adjustable column, the positioning section 212 of the adjustable column
Be adapted with via, the thread segment 213 of the adjustable column passes through the via, and with the immovable fitting of nut 215.
The resonant rod 330 of first resonant rod 320 or second can be rotated by the cooperation of screwdriver and plum blossom groove 214, please join
Fig. 6 is read, the first resonant rod 320 and the second resonant rod 330 use the adjustable resonant rod of above-mentioned coupling, the first resonant rod 320
The resonant rod 330 of concentric circles segmental arc 221 and second is relative, and the second resonant rod 330 is in first state, its special-shaped segmental arc 222 and the
The concentric circles segmental arc 221 of one resonant rod 320 is relative, as shown by the solid line in the drawings position；Rotate second resonant rod 330 and rotate 90 degree
Afterwards, the second resonant rod 330 is in the second state, the concentric circles segmental arc 221 into 90 of its special-shaped resonant rod 320 of segmental arc 222 and first
Spend, as shown in phantom in FIG. position.Second resonant rod 330 is from during first state rotates to the second state, the first resonance
Spacing a between the resonance plate of the resonant rod 330 of bar 320 or second changes, and process is even variation.
By rotary harmonic bar, change the distance between each adjacent resonance plate, resonance plate side wall and adjacent resonance plate side wall
Change apart from generation rule, required wave filter capacitive cross coupling is produced, after reaching the coupling value required for wave filter
Clamp nut 215.
Different wave filter capacitive cross couplings can be obtained if the first resonant rod 320 or the second resonant rod 330 is adjusted.
Fig. 7 is refer to, the utility model couples the resonance plate of adjustable resonant rod using eccentric or polymorphic structure, passes through rotation
Turn resonant rod, the distance between each adjacent resonance plate can be changed to reach and produce required capacitive, inductive coupled or intersection coupling
The effect of conjunction.With two coupling turnable resonator disk distance 2~5mm, 900MHz emulation data instances in Fig. 7, the second resonant rod 330 by
The rotation of 0 °~90 ° angle value degree, between the disk for the resonance plate for producing the first resonant rod 320 or the second resonant rod 330 distance a 2~
Change between 5mm, couple value changes between the first resonant rod 320 or the second resonant rod 330 as illustrated, emulation data in figure,
For the coupling bandwidth curve being calculated according to Y parameter, when coupling bandwidth value more than 0, coupling shows as perception, works as strap
When width values are less than 0, coupling shows as capacitive.By being emulated in figure it can be seen from data result with the anglec of rotation of the second resonant rod 330
The change (0 ° → 90 °) of degree, the spacing between two resonant rods become larger, and the coefficient of coup is also from minimum -5.4 gradually increases
To+20.2, it is achieved thereby that the change of coupling size and polarity.
Preferred embodiment of the present utility model is the foregoing is only, the scope of protection of the utility model is not limited thereto,
Any equivalent transformation based in technical solutions of the utility model is belonged within scope of protection of the utility model.
Claims (10)
1. one kind couples adjustable resonant rod, it is characterised in that its resonance plate for including resonant rod and resonant rod top being set, should
Perforate is set among resonance plate to connect resonant rod internal resonance chamber, the resonance plate includes consistent with the radius that resonant rod is concentric same
Heart arc section, and the special-shaped segmental arc of the radius consecutive variations of connection concentric circles segmental arc.
2. adjustable resonant rod is coupled as claimed in claim 1, it is characterised in that the special-shaped segmental arc ratio accounts for the whole resonance
The 1/4~1/2 of disk.
3. adjustable resonant rod is coupled as claimed in claim 1, it is characterised in that the special-shaped segmental arc ratio accounts for the whole resonance
The 1/2 of disk, radius continuously becomes by connected concentric circles segmental arc one end continuously becomes as low as isocentric circular arc section to stage casing, then radius greatly
The other end connects.
4. the adjustable resonant rod of coupling as described in any one of claims 1 to 3, it is characterised in that the resonant rod bottom is provided with
Adjustable column.
5. adjustable resonant rod is coupled as claimed in claim 4, it is characterised in that the regulation column bottom is provided with type groove.
6. adjustable resonant rod is coupled as claimed in claim 5, it is characterised in that the type groove is plum blossom groove.
7. adjustable resonant rod is coupled as claimed in claim 4, it is characterised in that the adjustable column includes positioning section and lower section
Thread segment.
8. a kind of cavity body filter, it is characterised in that the first resonant rod and the second resonant rod are provided with filter cavity body, at least
One resonant rod is using the adjustable resonant rod of coupling as described in any one of claim 1~7.
9. cavity body filter as claimed in claim 8, it is characterised in that the bottom of the filter cavity is provided with via, the coupling
The adjustable column that adjustable resonant rod bottom is set is closed to install through the via.
10. cavity body filter as claimed in claim 9, it is characterised in that the positioning section of the adjustable column is adapted with via, should
The thread segment of adjustable column passes through the via, and with nut immovable fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720433956.XU CN206907897U (en) | 2017-04-24 | 2017-04-24 | Cavity body filter and its adjustable resonant rod of coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720433956.XU CN206907897U (en) | 2017-04-24 | 2017-04-24 | Cavity body filter and its adjustable resonant rod of coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206907897U true CN206907897U (en) | 2018-01-19 |
Family
ID=61291147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720433956.XU Active CN206907897U (en) | 2017-04-24 | 2017-04-24 | Cavity body filter and its adjustable resonant rod of coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206907897U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992347A (en) * | 2017-04-24 | 2017-07-28 | 广东通宇通讯股份有限公司 | Cavity body filter and its adjustable resonant rod of coupling |
-
2017
- 2017-04-24 CN CN201720433956.XU patent/CN206907897U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992347A (en) * | 2017-04-24 | 2017-07-28 | 广东通宇通讯股份有限公司 | Cavity body filter and its adjustable resonant rod of coupling |
| CN106992347B (en) * | 2017-04-24 | 2020-04-17 | 广东通宇通讯股份有限公司 | Cavity filter and coupling adjustable resonance rod thereof |
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