CN207134456U - A kind of dielectric resonator of crack resistence - Google Patents
A kind of dielectric resonator of crack resistence Download PDFInfo
- Publication number
- CN207134456U CN207134456U CN201720886007.7U CN201720886007U CN207134456U CN 207134456 U CN207134456 U CN 207134456U CN 201720886007 U CN201720886007 U CN 201720886007U CN 207134456 U CN207134456 U CN 207134456U
- Authority
- CN
- China
- Prior art keywords
- resonant rod
- cavity
- dielectric resonator
- cover plate
- medium resonant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The utility model discloses a kind of dielectric resonator of crack resistence, and it includes cover plate, tuning screw, medium resonant rod and cavity；Tuning screw is installed on the cover board, and cover plate lid is above the cavity, and medium resonant rod is cylindric and be arranged in cavity, and cavity bottom surface and medium resonant rod corresponding position, which are provided with, coaxially arranged has circle shape groove and cylindrical boss；The height of cylindrical boss is less than the depth of circle shape groove；The diameter of cylindrical boss is more than the internal diameter of medium resonant rod；Medium resonant rod, which coordinates, to be installed in circle shape groove；The first scolding tin is filled with circle shape groove；Medium resonant rod is connected with cover plate by the second scolding tin.The utility model is simple in construction, convenient processing and manufacture, its technical problem by the way that medium resonant rod efficiently avoid to dielectric resonator cracking caused by dielectric resonator varies with temperature with expansion of metal difference of coefficients using both ends welding manner.
Description
Technical field
A kind of dielectric resonator is the utility model is related to, belongs to communication technique field, and in particular to a kind of Jie of crack resistence
Matter resonator.
Background technology
Wave filter is widely used in various wireless communication systems, for filtering out the signal outside communication signal frequency.With
The continuous development of the communication technology, new requirement is proposed to wave filter, it is desirable to wave filter small size, low-loss.TM mould media are humorous
Shake device wave filter using the Q values of ceramic medium material, high-k, frequency-temperature coefficient and thermal coefficient of expansion are small, can bear
The features such as high power, designs and produces, and has the advantages that low-loss, small, good temp characteristic is lost and is increasingly taken seriously.
TM mode filters are mainly made up of dielectric resonator and metallic cavity, metal cover board.Medium is humorous in dielectric filter
Device upper and lower ends face of shaking ground connection stability is extremely important, otherwise can influence the performance of wave filter.It is however, larger in temperature change
When, ceramic dielectric resonator causes because the effect of expanding with heat and contract with cold can cause its end face and metallic cavity, cover plate loose contact
Dielectric resonator upper surface can not be reliably grounded, and influence the performance of dielectric resonator.Common TM moulds dielectric resonator can be
Dielectric resonator one end increase elastomeric pad alleviates this deficiency, relative to both ends all using the TM mould dielectric resonances being welded to connect
Device, ground connection can also obtain bigger Q values, but both ends all use the TM moulds dielectric resonator being welded to connect due to pottery with good
Ceramic dielectric and the coefficient of expansion of metallic cavity are different, and being expanded with heat and contract with cold in temperature change can cause ceramics to split, and cause to filter
Device performance reduces.
Therefore, urgent need offer one kind is avoided that causes because dielectric resonator varies with temperature with expansion of metal difference of coefficients
Dielectric resonator cracking assembling mode.
A kind of dielectric resonator and dielectric filter are disclosed in Chinese utility model patent CN 205921064U.It is situated between
Matter resonator includes cover plate, tuning screw, medium resonant rod, cavity and pad.Tuning screw is fixedly installed on the cover board, cover plate
Lid is located above cavity；Cavity bottom offers circular groove, and pad is fixed positioned in cavity bottom circular groove, and medium is humorous
The bar that shakes is fixedly installed on pad.Dielectric filter of the present utility model ensures that medium is humorous by the screen resilience after gasket compression
The bar that shakes still has good electrical connection in drastically stress between cover plate and cavity, so that its electric property is reliable and stable；Together
When, the medium resonant rod of traditional dielectric filter is efficiently solved in failtests such as high/low temperatures, the problem of easily breaking.But
It is the pad that the utility model needs more increases by one not easy processing, can increases manufacturing cost when mass producing dielectric resonator
With expend manufacturing man-hours, while also improve the labor intensity of technical staff, thus uneconomical.
The content of the invention
In view of the above-mentioned drawbacks of the prior art, the purpose of this utility model seeks to solve above-mentioned background technology not
Foot, there is provided a kind of dielectric resonator of crack resistence, it is avoided that because dielectric resonator and expansion of metal difference of coefficients are with temperature
It is simple in construction, easy to process while dielectric resonator caused by change ftractures.
In order to solve the above technical problems, present invention employs the dielectric resonator of such a crack resistence, it include cover plate,
Tuning screw, medium resonant rod and cavity；The tuning screw is arranged on the cover plate, and the cover plate lid is located at the cavity
Top, the medium resonant rod is cylindrical shape and is arranged in the cavity, the cavity bottom surface and medium resonant rod corresponding position
Being provided with coaxially arranged has circle shape groove and cylindrical boss；It is recessed that the height of the cylindrical boss is less than the annular shape
The depth of groove；The diameter of the cylindrical boss is more than the internal diameter of the medium resonant rod；The medium resonant rod coordinates installation
In in the circle shape groove；The first scolding tin is filled with the circle shape groove；The medium resonant rod leads to the cover plate
Cross the connection of the second scolding tin.
In a kind of preferred embodiment of the present utility model, the lower surface of the medium resonant rod, the bottom of the cavity
Face and the circle shape groove three surround a scolding tin filled cavity；First scolding tin is filled with the scolding tin filled cavity.
In a kind of preferred embodiment of the present utility model, the shape of cross section and the medium of second scolding tin are humorous
Shake bar shape of cross section it is corresponding.
In a kind of preferred embodiment of the present utility model, the base material of the cover plate is epoxy resin, polytetrafluoroethylene (PTFE)
Or ceramic material.
In a kind of preferred embodiment of the present utility model, the tuning screw and the coaxial cloth of the medium resonant rod
Put, the tuning screw is threadedly coupled with the cover plate.
In a kind of preferred embodiment of the present utility model, the upper and lower ends face of the medium resonant rod has roasting silver
Layer.(one kind roasting silver process, silver paste, which is printed on, needs position, high-temperature baking solidify afterwards)
In a kind of preferred embodiment of the present utility model, the 3rd weldering is provided between the cover plate and the cavity
Tin.
In a kind of preferred embodiment of the present utility model, shape of cross section and the cavity of the 3rd scolding tin
Shape of cross section is corresponding.
It is equidistant with the chamber muscle junction of the cavity on the cover plate in a kind of preferred embodiment of the present utility model
It is provided with multiple vias.
The beneficial effects of the utility model are：The utility model is simple in construction, convenient processing and manufacture, and it need to be situated between in tradition
A processing coaxial circle shape groove and a cylindrical boss in the cavity of matter resonator, is positioned by circle shape groove and pacified
Fill medium resonant rod, by cylindrical boss Supporting Media resonant rod, and the sky formed in circle shape groove and cylindrical boss
Intracavitary fill scolding tin and meanwhile medium resonant rod is connected with cover plate by scolding tin can be effectively prevented from due to dielectric resonator and
The technical problem that dielectric resonator caused by expansion of metal difference of coefficients varies with temperature ftractures；The utility model passes through in medium
The both ends of resonant rod set silver layer to be effectively improved its bonding strength, by setting via game ground increase on the cover board
The reliability of ground connection；The utility model works as medium resonant rod by being provided with the 3rd scolding tin between cover plate and cavity simultaneously
During with temperature shrinkage or expansion, cover plate can occur to keep good connection while elastic deformation therewith, therefore dielectric resonator
Good filtering performance can be kept within the scope of larger temperature.
Brief description of the drawings
Fig. 1 is a kind of exploded perspective view of the dielectric resonator of crack resistence of the utility model embodiment；
Fig. 2 is a kind of assembling schematic diagram of the dielectric resonator of crack resistence of the utility model embodiment；
Fig. 3 is a kind of top view of the dielectric resonator of crack resistence of the utility model embodiment；
Fig. 4 is a kind of sectional view of the dielectric resonator of crack resistence of the utility model embodiment；
Fig. 5 is a kind of cavity top view of the dielectric resonator of crack resistence of the utility model embodiment；
Fig. 6 is a kind of cavity sectional view of the dielectric resonator of crack resistence of the utility model embodiment；
Fig. 7 is a kind of cavity bottom partial enlarged view of the dielectric resonator of crack resistence of the utility model embodiment；
Fig. 8 is a kind of medium resonant rod structural representation of the dielectric resonator of crack resistence of the utility model embodiment；
In figure：1- cover plates, 2- tuning screws, 3- medium resonant rods, 4- cavitys, the scolding tin of 5- first, the scolding tin of 6- second, 7-
Three scolding tin, 8- vias, 4.1- circle shape grooves, 4.2- cylindrical boss, 4.3- scolding tin filled cavities.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining this
Utility model, it is not used to limit the utility model.
It is new from a kind of dielectric resonator structural representation of description of the invention crack resistence shown in the drawings, this practicality
A kind of dielectric resonator of crack resistence of type, it includes cover plate 1, tuning screw 2, medium resonant rod 3 and cavity 4；Tuning screw 2 is pacified
On cover plate 1, cover plate 1 is covered on the top of cavity 4, and medium resonant rod 3 is arranged in cavity 4, the bottom surface of cavity 4 and dielectric resonance
The corresponding position of bar 3 is provided with coaxially arranged circle shape groove 4.1 and cylindrical boss 4.2；The external diameter of circle shape groove 4.1 can be with
The cooperation (groove plays spacing medium resonant rod 3, ensures axiality during its installation) of the external diameter of medium resonant rod 3, circle
The diameter of cylindrical boss 4.2 be more than medium resonant rod 3 internal diameter (boss plays Supporting Media resonant rod 3, works as dielectric resonance
When bar is installed and welding is sunk, boss can avoid scolding tin and pressure be unbalanced causes medium resonant rod with Supporting Media resonant rod 3
3 tilt)；The height of cylindrical boss 4.2 is less than the depth of circle shape groove 4.1；The lower surface of medium resonant rod 3 and cavity 4
Bottom surface between be filled with the first scolding tin 5 (the i.e. lower surface of medium resonant rod 3, the bottom surface of cavity 4, three of circle shape groove 4.1
A scolding tin filled cavity 4.3 is surrounded, the first scolding tin 5, medium resonant rod 3 and cylindrical boss 4.2 are filled with scolding tin filled cavity 4.3
Binding face there is no scolding tin)；(the medium of the second scolding tin 6 is filled between the upper surface of medium resonant rod 3 and the lower surface of cover plate 1
The height of resonant rod 3 is less than the depth of cavity 4).The external diameter of first scolding tin 5 is equal to the external diameter of circle shape groove 4.1, the first scolding tin
5 internal diameter is equal to the diameter of cylindrical boss 4.2, and the thickness of the first scolding tin 5 is equal to the height of cylindrical boss 4.2.Second weldering
The external diameter of tin 6 is equal to the external diameter of medium resonant rod 3, and the internal diameter of the second scolding tin 6 is equal to the internal diameter of medium resonant rod 3, the second scolding tin 6
Thickness be equal to the upper surface of medium resonant rod 3 apart from the lower surface of cover plate 1 distance.The base material of cover plate 1 is epoxy resin, polytetrafluoro
Ethene or ceramic material.Tuning screw 2 and medium resonant rod 3 are coaxially arranged, the screw thread of tuning screw 2 and the upper screwed hole of cover plate 1
(PCB cover plates individually weld or riveting nut set, are subsequently installed in nut sleeve for connection；Metal cover board has screw thread immediately above).It is situated between
The upper and lower ends face of matter resonant rod 3 is provided with roasting silver layer.The 3rd scolding tin 7 is provided between cover plate 1 and cavity 4.On cover plate 1 with
The chamber muscle junction of cavity 4 has been placed equidistant multiple vias 8.
During using the utility model：
(1) cavity is assembled, and the parts inside and outside cavity are arranged on to the correspondence position of cavity；
(2) medium resonant rod print solder paste, medium resonant rod is positioned into print solder paste on the printer；
(3) medium resonant rod assembles, and the one side that medium resonant rod is printed to tin cream loads installation position corresponding to cavity bottom
Put；
(4) cover plate print solder paste, printed by cover plate installation site corresponding with medium resonant rod, with cavity body muscle contact position
Tin cream；
(5) cover plate is assembled, and the cover plate for printing tin cream loading cavity is corresponded into installation site, then uses screw-driving；
(6) reflow soldering, the dielectric resonator assembled is put into reflow ovens welding.By the present invention in that use reflow soldering
Overall heating is realized, the breakage of dielectric resonator caused by avoiding local heating unbalanced, is reduced using low temperature tin cream whole
The welding temperature of body, the too high damage to caused by wave filter coating, material of temperature is avoided, dielectric resonator two-sided welding is once
Complete, assembling is simple, efficiency high.
It is only the embodiment of the present invention, but protection scope of the present invention is not limited to more than it should be appreciated that
In this, any those skilled in the art disclosed herein technical scope in, the change that can readily occur in or replace
Change, should all be included within the scope of the present invention.
Claims (9)
1. a kind of dielectric resonator of crack resistence, including cover plate (1), tuning screw (2), medium resonant rod (3) and cavity (4)；
The tuning screw (2) is arranged on the cover plate (1), and the cover plate (1) is covered on above the cavity (4), the medium
Resonant rod (3) is cylindrical shape and is arranged in the cavity (4), and cavity (4) bottom surface is set with medium resonant rod (3) corresponding position
Being equipped with coaxially arranged has circle shape groove (4.1) and cylindrical boss (4.2)；It is characterized in that：The cylindrical boss
(4.2) height is less than the depth of the circle shape groove (4.1)；The diameter of the cylindrical boss (4.2), which is more than, to be given an account of
The internal diameter of matter resonant rod (3)；The medium resonant rod (3), which coordinates, to be installed in the circle shape groove (4.1)；The annular shape
The first scolding tin (5) is filled with groove (4.1)；The second scolding tin is filled between the medium resonant rod (3) and the cover plate (1)
(6)。
A kind of 2. dielectric resonator of crack resistence according to claim 1, it is characterised in that：The medium resonant rod (3)
Lower surface, the cavity (4) bottom surface and the circle shape groove (4.1) three surround a scolding tin filled cavity (4.3)；It is described
First scolding tin (5) is filled with scolding tin filled cavity (4.3).
A kind of 3. dielectric resonator of crack resistence according to claim 1, it is characterised in that：Second scolding tin (6)
Shape of cross section is corresponding with the shape of cross section of the medium resonant rod (3).
A kind of 4. dielectric resonator of crack resistence according to claim 1, it is characterised in that：The base material of the cover plate (1)
For epoxy resin, polytetrafluoroethylene (PTFE) or ceramic material.
A kind of 5. dielectric resonator of crack resistence according to claim 1, it is characterised in that：The tuning screw (2) with
The medium resonant rod (3) is coaxially arranged, and the tuning screw (2) is threadedly coupled with the cover plate (1).
A kind of 6. dielectric resonator of crack resistence according to claim 1, it is characterised in that：The medium resonant rod (3)
Upper and lower ends face have roasting silver layer.
A kind of 7. dielectric resonator of crack resistence according to claim 1, it is characterised in that：The cover plate (1) with it is described
Cavity (4) is connected by the 3rd scolding tin (7).
A kind of 8. dielectric resonator of crack resistence according to claim 7, it is characterised in that：3rd scolding tin (7)
Shape of cross section is corresponding with the shape of cross section of the cavity (4).
A kind of 9. dielectric resonator of crack resistence according to claim 1, it is characterised in that：On the cover plate (1) and institute
The chamber muscle junction for stating cavity (4) has been placed equidistant multiple vias (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720886007.7U CN207134456U (en) | 2017-07-20 | 2017-07-20 | A kind of dielectric resonator of crack resistence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720886007.7U CN207134456U (en) | 2017-07-20 | 2017-07-20 | A kind of dielectric resonator of crack resistence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207134456U true CN207134456U (en) | 2018-03-23 |
Family
ID=61639655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720886007.7U Active CN207134456U (en) | 2017-07-20 | 2017-07-20 | A kind of dielectric resonator of crack resistence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207134456U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248610A (en) * | 2017-07-20 | 2017-10-13 | 武汉凡谷电子技术股份有限公司 | The dielectric resonator and its manufacture method of a kind of crack resistence |
| CN112670684A (en) * | 2019-10-15 | 2021-04-16 | 深圳市大富科技股份有限公司 | Cavity filter, cover plate thereof and communication equipment |
| EP3893325A4 (en) * | 2018-12-28 | 2021-12-22 | Huawei Technologies Co., Ltd. | Tm mode filter and manufacturing method therefor |
| WO2024087011A1 (en) * | 2022-10-25 | 2024-05-02 | Nokia Shanghai Bell Co., Ltd. | Resonator and filter |
-
2017
- 2017-07-20 CN CN201720886007.7U patent/CN207134456U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248610A (en) * | 2017-07-20 | 2017-10-13 | 武汉凡谷电子技术股份有限公司 | The dielectric resonator and its manufacture method of a kind of crack resistence |
| CN107248610B (en) * | 2017-07-20 | 2020-10-02 | 武汉凡谷电子技术股份有限公司 | Anti-cracking dielectric resonator and manufacturing method thereof |
| EP3893325A4 (en) * | 2018-12-28 | 2021-12-22 | Huawei Technologies Co., Ltd. | Tm mode filter and manufacturing method therefor |
| JP2022518360A (en) * | 2018-12-28 | 2022-03-15 | 華為技術有限公司 | TM mode filter and manufacturing method of TM mode filter |
| JP7266685B2 (en) | 2018-12-28 | 2023-04-28 | 華為技術有限公司 | TM mode filter and method for manufacturing TM mode filter |
| US11990661B2 (en) | 2018-12-28 | 2024-05-21 | Huawei Technologies Co., Ltd. | TM mode filter and method for manufacturing TM mode filter |
| CN112670684A (en) * | 2019-10-15 | 2021-04-16 | 深圳市大富科技股份有限公司 | Cavity filter, cover plate thereof and communication equipment |
| WO2024087011A1 (en) * | 2022-10-25 | 2024-05-02 | Nokia Shanghai Bell Co., Ltd. | Resonator and filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207134456U (en) | A kind of dielectric resonator of crack resistence | |
| CN107248610A (en) | The dielectric resonator and its manufacture method of a kind of crack resistence | |
| CN1144299C (en) | Electric component apparatus having electronic component device located on face surface of package member with space therebetween | |
| CN103872419A (en) | Medium resonator and assembling method thereof, and medium filter | |
| US5040091A (en) | Feed-through capacitor | |
| CN103066941A (en) | Surface mounted device (SMD) quartz-crystal resonator base and processing method thereof | |
| CN202474154U (en) | TM mode medium filter | |
| CN108399988B (en) | Ceramic insulator for electronic packaging and manufacturing method thereof | |
| CN104733828B (en) | TM mould dielectric resonators | |
| CN101777883A (en) | All-metal material packaged type quartz-crystal resonator and preparation process thereof | |
| CN201504226U (en) | Ceramic shell chip frequency device | |
| CN113921224B (en) | SMD inductor | |
| CN103972618A (en) | TM (transverse magnetic)-mode dielectric filter | |
| CN201611679U (en) | Installation structure of a dielectric resonator | |
| CN106450645A (en) | TM die dielectric resonator and dielectric filter | |
| JP2976815B2 (en) | Piezoelectric vibrator | |
| KR100796621B1 (en) | Fixing structure of rod for ceramics heater | |
| CN107134628A (en) | A kind of dielectric resonator and its assembly method | |
| CN204927239U (en) | Microwave plasma light source | |
| CN208849050U (en) | A kind of novel medium filter | |
| CN201584479U (en) | Temperature compensation cylinder rotary die resonant cavity | |
| CN205985294U (en) | TE mould dielectric resonator and filtered received | |
| CN107275743B (en) | TM mode dielectric resonator | |
| CN206313105U (en) | A kind of high power TM mould dielectric filters | |
| KR100701624B1 (en) | Making method of oven for heating cooker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |