CN205944361U - TM mould bi -polar short circuit wave filter - Google Patents
TM mould bi -polar short circuit wave filter Download PDFInfo
- Publication number
- CN205944361U CN205944361U CN201620728727.6U CN201620728727U CN205944361U CN 205944361 U CN205944361 U CN 205944361U CN 201620728727 U CN201620728727 U CN 201620728727U CN 205944361 U CN205944361 U CN 205944361U
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- cushion
- short circuit
- dielectric resonator
- mould
- wave filter
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Abstract
The utility model discloses a TM mould bi -polar short circuit wave filter includes: the cavity, apron, tuning screw rod, dielectric resonator, cushion, and metal level, the utility model discloses utilize flexible member such as cushion, the intermodulation performance is improved to the metal level that has made the short circuit effect can laminate dielectric resonator terminal surface, apron internal surface and cavity bottom surface fully well greatly, reduces the loss. Apron and cavity structures are simple simultaneously, easily processing. Materials such as the available rubber of cushion, plastics, the material easily acquires, and is with low costs, and simple structure processing is convenient moreover. Therefore, the utility model provides a TM mould bi -polar short circuit wave filter, its processing and assembly process are simple, with low costs, the reliable and easily realization of short circuit.
Description
【Technical field】
This utility model is related to technical field of communication equipment, particularly to a kind of TM mould both-end short circuit wave filter.
【Background technology】
Wave filter is a kind of frequency filter device, the signal of frequency range needing 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, wherein traditional metal coaxial cavity filter
Technical maturity, most widely used.But the usual volume of metal coaxial cavity filter is larger with loss it is impossible to acquirement is very high
Q-value (factor of merit), and temperature influence performance change is larger.TM mould both-end short-circuit resonant device can achieve miniaturization at present,
But because both-end short circuit manner is unreliable, its performance is also unstable, or even deteriorate in time lose efficacy.The two ends of TM mould resonator
For being usually rigid contact between flat mouth, and cover plate and filter cavity bottom, cover plate is relied on to be arranged on generation after on cavity
Elastic deformation or similar structures, dielectric resonator is compressed, and realizes the both-end short circuit of dielectric resonator.But mismachining tolerance and being subject to
Heat catch a cold after the loose contact leading between cover plate and dielectric resonator, cavity and dielectric resonator of expanding with heat and contract with cold, all easily send out
, Insertion Loss and becomes the penalty phenomenon such as big in raw short-circuit failure phenomenon.The TM mould both-end short circuit wave filter of prior art is generally logical
Cross welding or design the both-end short circuit that dielectric resonator realized by special cover plate, and welding manner easily causes medium local temperature
Degree is high and chipping；The particular design of cover plate leads to cover plate processing cost to improve, complex process.
Therefore it is necessary to a kind of new technical scheme is proposed, to solve above-mentioned technical problem.
【Utility model content】
The purpose of this utility model be to provide a kind of TM mould both-end short circuit wave filter, its processing and assembly technology simple,
Low cost, short-circuit reliability and being easily achieved.
For solving the above problems, the technical solution of the utility model is as follows：
This utility model provides a kind of TM mould both-end short circuit wave filter, and described TM mould both-end short circuit wave filter includes：Chamber
Body, cover plate, tuning screw, dielectric resonator, cushion, and metal level；
Wherein, described cover plate covers described cavity and forms resonator cavity；Described dielectric resonator is arranged on cavity inner bottom part；Institute
State dielectric resonator upper end and be provided with a cushion, described cushion outer wrapping metal level；Described tuning screw assembles on the cover board
And part stretches into resonator cavity.
Preferably, described inside cavity bottom surface is provided with boss, and described dielectric resonator is set in outside described boss.
Preferably, the height sum of the thickness of described cushion, the thickness of metal level and dielectric resonator compares cavity depth
Greatly.
Preferably, it is provided with through hole in the middle of described dielectric resonator, described tuning screw part stretches into described dielectric resonator
Through hole in.
Preferably, the annular that described cushion causes for variable thickness.
Preferably, it is provided with, between described dielectric resonator lower surface and inside cavity bottom surface, the elasticity being enclosed with metal level
Pad.
Preferably, the elastic mat thickness of described dielectric resonator lower end is consistent.
Preferably, have between the cushion of the metal level of described dielectric resonator lower end and described dielectric resonator lower end
Space.
Preferably, it is provided with through hole in the middle of described cushion, described through-hole diameter is equal to or less than described tuning screw diameter.
Preferably, big near described through hole thickness on described cushion, form a round ring boss, make elasticity be lined with one
Big little two faces of cylinder.
Hinge structure, the TM mould both-end short circuit wave filter that this utility model provides includes：Cavity, cover plate, tune spiral shell
Bar, dielectric resonator, cushion, and metal level；Wherein, described cover plate covers described cavity and forms resonator cavity；Described medium
Resonator is arranged on cavity inner bottom part；Described dielectric resonator upper end is provided with a cushion, described cushion outer wrapping metal level；
Resonator cavity is stretched in described tuning screw assembling on the cover board and partly.This utility model utilizes the flexible members such as cushion, has made
The metal level of short circuit effect can sufficiently good be fitted dielectric resonator end face, cover inner surface and cavity bottom surface, substantially improves
Intermodulation performance, reduces loss.Cover plate and cavity body structure are simply it is easy to process simultaneously.Cushion can use rubber, plastic or other material,
Material is easily obtained, low cost, and structure is simply easy to process.Therefore, the TM mould both-end short circuit filter that this utility model provides
Ripple device, its processing and assembly technology are simple, low cost, short-circuit reliability and being easily achieved.
It is that the above of the present utility model can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawing
Formula, is described in detail below.
【Brief description】
The installation diagram of the TM mould both-end short circuit wave filter that Fig. 1 provides for this utility model embodiment one；
The schematic diagram of the cushion that Fig. 2 provides for this utility model embodiment one；
The installation diagram of the TM mould both-end short circuit wave filter that Fig. 3 provides for this utility model embodiment two；
The installation diagram of the TM mould both-end short circuit wave filter that Fig. 4 provides for this utility model embodiment three.
【Specific embodiment】
The word " embodiment " that this specification is used means serving as example, example or illustration.Additionally, this specification and institute
Article " one " used in attached claim usually can be interpreted to mean " one or more ", unless otherwise or
Understand guiding singulative from context.
In order to technical scheme described in the utility model is described, to illustrate below by specific embodiment.
Embodiment one
Refer to Fig. 1, the schematic diagram of the TM mould both-end short circuit wave filter providing for this utility model embodiment one.In order to just
In explanation, illustrate only the part related to this utility model embodiment.
Described TM mould both-end short circuit wave filter includes：Cavity 101, cover plate 102, cover screw 103, tuning screw 104, spiral shell
Stem jam nut 105, dielectric resonator 106, cushion 107, and metal level 108.
Wherein, the screw cooperation on cover screw 103 and cavity 101, cover plate 102 is fastened on cavity 101, described lid
Plate 102 capping cavity 101 forms resonator cavity.Cavity 101 inner bottom surface has boss 109, and this boss 109 can be circular cylindrical projection
Platform is it is to be understood that can also be the boss of other shapes.Dielectric resonator 106 is arranged on cavity 101 inner bottom part, and covers
It is located at outside described boss 109.Dielectric resonator 106 upper end is provided with a cushion 107, this cushion 107 outer wrapping layer of metal
Layer 100.Cover plate 102 is provided with screw (sign), and tuning screw 104 is assemblied on cover plate 102 with the cooperation of this screw.Screw in or
Screw out tuning screw 104, adjust it and go deep into the length of resonator cavity and filter characteristic can be tuned.Adjust tuning screw
It is locked by screw locknut 105 behind 104 positions.
In this utility model embodiment, the thickness of cushion 107, the thickness of metal level 100 and dielectric resonator 106
Height sum is bigger than cavity 101 depth.Thus after cover plate 102 is arranged on cavity 101, cushion 107 compression.Cushion
Metal level 100 is fitted tightly on adjacent contact surface the elastic resistance that 107 compressions produce.For example by metal level and Jie
Matter resonator end face, fit tightly by metal level and cover inner surface and by metal level and cavity bottom surface etc..Dielectric resonator
End face and cover plate, cavity pass through this metal level and realize electrical connection, and dielectric resonator lower surface can be directly direct with cavity bottom
Contact realizes electrical connection it is also possible to be enclosed with the cushion of metal level by above-mentioned identical, realizes flexible electrical with cavity bottom
Connect.
Wherein, dielectric resonator 106 is cylindrical annular, and there is the through hole running through centre, this low damage of dielectric resonator 106
Consumption, the dielectric material of high-k are made, such as ceramic medium material.Tuning screw 104 part stretches into described dielectric resonance
In the through hole of device 106.The all metal-coated layer of upper and lower side annular surface of dielectric resonator 106.Dielectric resonator 106 through hole is straight
Footpath is more slightly larger or equal than cavity bottom surface cylindrical boss 109 diameters, so that dielectric resonator 106 can be enclosed within cavity boss 109,
This cavity boss 109 can also play positioning action to dielectric resonator.
In the present embodiment it is contemplated that the cavity material expansion different with dielectric resonator material and contraction during temperature change
Rate, in order to prevent boss from bursting dielectric resonator material, boss external diameter can also be more smaller than dielectric resonator through-hole diameter, shape
Become gap cooperation.The upper and lower side ring surface of dielectric resonator is coated with metal level, such as silver layer.
It is understood, however, that the annular that cushion 107 causes for variable thickness, as shown in Figure 2.Cushion 107 is permissible
With rubber, or flexible plastic is made, such as PTFE (Teflon).On cushion 107, at interior bone, thickness is larger, is formed
One round ring boss, makes cushion 107 have small one and large one two faces of cylinder.This round ring boss external diameter, i.e. cushion small column
Face diameter, less than or equal to dielectric resonator through-hole diameter.The big face of cylinder of cushion 107 is cylindrical with diameter greater than equal to dielectric resonator
Diameter.In cushion round ring boss insertion dielectric resonator through hole.Through-hole diameter in the middle of cushion is equal to or slightly less than to be adjusted
Humorous screw diameter.Tuning screw passes through cover plate screw, and passes through the through hole of cushion to stretch in dielectric resonator intermediate throughholes
Row tuning.
Specifically, the cushion 107 of the upper end of dielectric resonator can make the ring that the middle thickness having through hole changes
Shape or other shapes.This through-hole diameter is equal to or slightly less than tuning screw diameter.By this through hole, the upper end of dielectric resonator
Cushion can realize the positioning of radial direction using tuning screw.The cushion through hole of the upper end of dielectric resonator is thicker, is formed
One raised ring-shaped step (i.e. above-mentioned round ring boss), makes elasticity be lined with small one and large one two faces of cylinder, and vertically
Cross section be stairstepping.The diameter of the cushion small cylindrical surface of the upper end of dielectric resonator is equal to or slightly less than dielectric resonator
Through-hole diameter.The big face of cylinder of cushion of the upper end of dielectric resonator is with diameter greater than dielectric resonator outside diameter.Dielectric resonance
The raised ring-shaped step of the cushion of the upper end of device inserts the upper end relying on dielectric resonator in the through hole in the middle of dielectric resonator
The small cylindrical surface of cushion dielectric resonator upper end is played with certain radial support effect.The bullet of the upper end of dielectric resonator
Metal level outside property pad at least covers step surface between two faces of cylinder, cushion large round end surface.Can be big in cushion
Circle side covers metal level thus the metal level covering on above-mentioned step surface and large round end surface is carried out physical connection, thus realizing
Electrical connection.This side metal layer can be close to cushion side it is also possible to make "<" shape, make cushion side metal layer and bullet
Certain space is left in property pad side.The metal of above-mentioned two face covering can also be connected by conductor wire or other modes respectively
Layer, realizes the electrical connection between metal level.
In the present embodiment, in cushion 107 outer wrapping layer of metal layer 108.This metal level 108 can for Copper Foil or its
The good flexible thin metal's plate of his electric conductivity.The Copper Foil being adopted can be gum Copper Foil.This metal level 108 can be made of one
Can also make burst.For example, it is possible to wrap up the top large round end surface of cushion, the big face of cylinder, big with a monoblock Copper Foil
Step surface between the face of cylinder and small cylindrical surface.The above-mentioned surface of cushion can also be sticked to respectively with several pieces of Copper Foil paper, and make
Copper Foil between each surface contacts.The metal level of parcel cushion is subject to the elastic resistance of cushion compression to act on, from
And be fitted tightly on cover inner surface and dielectric resonator upper surface.Dielectric resonator be can achieve by this metal level 108
106 with the short circuit of cover plate 102.The lower surface of dielectric resonator 106 and cavity 101 bottom directly contact, and dielectric resonator 106
It is similarly subjected to the effect of cushion 107 elastic resistance, its lower surface and cavity bottom fit tightly, and realize good short circuit.
From the foregoing, it will be observed that the TM mould both-end short circuit wave filter that the present embodiment one provides, the TM mould both-end short circuit with prior art
Wave filter is compared, and the short-circuit effect of the TM mould both-end short circuit wave filter that the present embodiment one provides is good, short-circuit structure and manufacturing process
Simply, low cost；Cover plate and cavity body structure are simple, easy to process；There is stronger vibration resistance.
Embodiment two
Refer to Fig. 3, the schematic diagram of the TM mould both-end short circuit wave filter providing for this utility model embodiment two.In order to just
In explanation, illustrate only the part related to this utility model embodiment.
The present embodiment two is essentially identical with embodiment one, and difference is, embodiment one medium resonator lower surface
Directly and inside cavity bottom surface directly contact, set between the present embodiment two medium resonator lower surface and inside cavity bottom surface
There is the cushion 202 that be enclosed with metal level 201 similar to embodiment one；The elasticity of embodiment one medium resonator upper end
Pad through-hole diameter is less than tuning screw diameter, and the cushion through-hole diameter of the present embodiment two medium resonator upper end is equal to and adjusts
Humorous screw diameter.
In the present embodiment two, the elastic mat thickness of dielectric resonator lower end is consistent, its interior bone with diameter greater than or
Equal to inside cavity bottom surface cylindrical boss diameter.It is convex that the metal layer thickness sum that this elastic mat thickness and outside are wrapped up is less than this
Platform height.This cushion and is equally pressed in cavity across metal level across metal laminate on this cushion by dielectric resonator
Inner bottom surface.The present embodiment passes through the both-end short circuit that two cushions being enclosed with metal level realize dielectric resonator, short circuit effect
Fruit more preferably, has stronger vibration resistance.
Specifically, the cushion of the lower end of dielectric resonator can make centre have the annular of consistency of thickness of through hole or its
His shape.This through-hole diameter is equal or slightly larger than cavity bottom cylindrical boss diameter.The cushion of the lower end of dielectric resonator
Both ends of the surface also cover above-mentioned has metal level.The cushion of the lower end of dielectric resonator is little with the metal layer thickness sum covering thereon
Height in cylindrical boss.The cushion of lower end is inserted in cavity bottom cylindrical boss by intermediate throughholes and carries out positioning peace
Dress.Dielectric resonator is pressed on cushion, and its lower surface is compressed across metal level with lower end cushion upper surface.And the bullet of lower end
Property pad lower surface compress across metal level and cavity bottom.The cushion upper and lower end face metal level of lower end can also be by side gold
Belong to layer and realize electrical connection.The cushion side metal layer of lower end can be close to cushion side it is also possible to make "<" shape, make bullet
Property pad side metal layer and cushion side leave certain space.Dielectric resonator can adopt and can not also adopt lower end
Cushion.If dielectric resonator does not adopt the cushion of lower end, dielectric resonator lower surface is directly contacted with cavity bottom.
Embodiment three
Refer to Fig. 4, the schematic diagram of the TM mould both-end short circuit wave filter providing for this utility model embodiment three.In order to just
In explanation, illustrate only the part related to this utility model embodiment.
The present embodiment three is essentially identical with embodiment two, and difference is, on parcel dielectric resonator in embodiment two
The metal level of lower end cushion is close to cushion surface, including cushion large round end surface, step surface, the big face of cylinder, and this enforcement
In example three, this metal level is not fitted between the face of cylinder big with cushion, has a fixed gap therebetween.This metal level is in cushion side
Place can in "<" shape, it is also possible to be in circular arc or other shapes, makes cushion side metal layer and cushion side leave necessarily
Space.The present embodiment three, by arranging metal level space, can prevent metal level from having in cushion expanded by heating certain
Elongation surplus, and be unlikely to be burst.
In sum, the TM mould both-end short circuit wave filter that this utility model provides, using flexible members such as cushions, has made
The metal level of short circuit effect can sufficiently good be fitted dielectric resonator end face, cover inner surface and cavity bottom surface, substantially improves
Intermodulation performance, reduces loss.Cover plate and cavity body structure are simply it is easy to process simultaneously.Cushion can use rubber, plastic or other material,
Material is easily obtained, low cost, and structure is simply easy to process.Therefore, the TM mould both-end short circuit filter that this utility model provides
Ripple device, its processing and assembly technology are simple, low cost, short-circuit reliability and being easily achieved.
Although illustrate and describing this utility model, art technology with respect to one or more implementations
Personnel will be appreciated that equivalent variations and modification based on to the reading of the specification and drawings and understanding.This utility model includes owning
Such modification and modification, and be limited only by the scope of the following claims.Each particularly with executed by said modules
Kind of function, the term for describing such assembly is intended to that (for example it is in function corresponding to the specified function of executing described assembly
On be of equal value) random component (unless otherwise instructed), even if in structure with execute the showing of this specification shown in this article
The open structure of the function in plasticity implementation is not equal to.If although additionally, the special characteristic of this specification with respect to
Only one in dry implementation is disclosed, but this feature can with can be such as expectation for given or application-specific
Other combinations of features one or more with other favourable implementations.And, with regard to term " inclusion ", " having ", " containing "
Or for its deformation is used in specific embodiment or claim, such term is intended to similar to term "comprising"
Mode includes.
In sum although this utility model is disclosed above with preferred embodiment, but above preferred embodiment is not used
To limit this utility model, those of ordinary skill in the art, without departing from spirit and scope of the present utility model, all can make
Various changes and retouching, protection domain therefore of the present utility model is defined by the scope that claim defines.
Claims (10)
1. a kind of TM mould both-end short circuit wave filter is it is characterised in that described TM mould both-end short circuit wave filter includes：Cavity, cover plate,
Tuning screw, dielectric resonator, cushion, and metal level；
Wherein, described cover plate covers described cavity and forms resonator cavity；Described dielectric resonator is arranged on cavity inner bottom part；Given an account of
Matter resonator upper end is provided with a cushion, described cushion outer wrapping metal level；Described tuning screw assembles on the cover board simultaneously portion
Divide and stretch into resonator cavity.
2. TM mould both-end according to claim 1 short circuit wave filter it is characterised in that described inside cavity bottom surface be provided with convex
Platform, described dielectric resonator is set in outside described boss.
3. TM mould both-end according to claim 1 short circuit wave filter is it is characterised in that the thickness of described cushion, metal
The height sum of the thickness of layer and dielectric resonator is bigger than cavity depth.
4. TM mould both-end short circuit wave filter according to claim 1 is it is characterised in that be provided with the middle of described dielectric resonator
Through hole, described tuning screw part stretches in the through hole of described dielectric resonator.
5. TM mould both-end short circuit wave filter according to claim 1 is it is characterised in that described cushion causes for variable thickness
Annular.
6. TM mould both-end according to claim 1 short circuit wave filter it is characterised in that described dielectric resonator lower surface with
It is provided with the cushion being enclosed with metal level between inside cavity bottom surface.
7. TM mould both-end according to claim 6 short circuit wave filter is it is characterised in that the bullet of described dielectric resonator lower end
Property mat thickness is consistent.
8. TM mould both-end according to claim 6 short circuit wave filter is it is characterised in that the gold of described dielectric resonator lower end
Belong to, between layer and the cushion of described dielectric resonator lower end, there is space.
9. TM mould both-end short circuit wave filter according to claim 5 is it is characterised in that be provided with logical in the middle of described cushion
Hole, described through-hole diameter is equal to or less than described tuning screw diameter.
10. TM mould both-end according to claim 9 short circuit wave filter is it is characterised in that near described on described cushion
Through hole thickness is big, forms a round ring boss, makes elasticity be lined with small one and large one two faces of cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620728727.6U CN205944361U (en) | 2016-07-08 | 2016-07-08 | TM mould bi -polar short circuit wave filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620728727.6U CN205944361U (en) | 2016-07-08 | 2016-07-08 | TM mould bi -polar short circuit wave filter |
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| Publication Number | Publication Date |
|---|---|
| CN205944361U true CN205944361U (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620728727.6U Active CN205944361U (en) | 2016-07-08 | 2016-07-08 | TM mould bi -polar short circuit wave filter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129559A (en) * | 2016-07-08 | 2016-11-16 | 广东通宇通讯股份有限公司 | A kind of TM mould both-end short circuit wave filter |
| CN107579319A (en) * | 2017-09-06 | 2018-01-12 | 广东工业大学 | One kind is based on TM010The cube 4G base station filters of dielectric resonant chamber |
| CN108054475A (en) * | 2017-12-11 | 2018-05-18 | 四川九鼎智远知识产权运营有限公司 | A kind of TM moulds dielectric filter |
| CN110148823A (en) * | 2019-06-20 | 2019-08-20 | 东莞鸿爱斯通信科技有限公司 | Tuning block and cavity body filter for cavity body filter |
| WO2020248688A1 (en) * | 2019-06-11 | 2020-12-17 | 中兴通讯股份有限公司 | Dielectric resonator |
-
2016
- 2016-07-08 CN CN201620728727.6U patent/CN205944361U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129559A (en) * | 2016-07-08 | 2016-11-16 | 广东通宇通讯股份有限公司 | A kind of TM mould both-end short circuit wave filter |
| CN107579319A (en) * | 2017-09-06 | 2018-01-12 | 广东工业大学 | One kind is based on TM010The cube 4G base station filters of dielectric resonant chamber |
| CN107579319B (en) * | 2017-09-06 | 2020-08-11 | 广东工业大学 | Based on TM010Cubic 4G base station filter of dielectric resonant cavity |
| CN108054475A (en) * | 2017-12-11 | 2018-05-18 | 四川九鼎智远知识产权运营有限公司 | A kind of TM moulds dielectric filter |
| WO2020248688A1 (en) * | 2019-06-11 | 2020-12-17 | 中兴通讯股份有限公司 | Dielectric resonator |
| CN110148823A (en) * | 2019-06-20 | 2019-08-20 | 东莞鸿爱斯通信科技有限公司 | Tuning block and cavity body filter for cavity body filter |
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