CN107425241A - A kind of TM mould dielectric filters of cover plate welding - Google Patents
A kind of TM mould dielectric filters of cover plate welding Download PDFInfo
- Publication number
- CN107425241A CN107425241A CN201710502344.6A CN201710502344A CN107425241A CN 107425241 A CN107425241 A CN 107425241A CN 201710502344 A CN201710502344 A CN 201710502344A CN 107425241 A CN107425241 A CN 107425241A
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- China
- Prior art keywords
- cover plate
- annular recess
- dielectric
- dielectric resonator
- cavity
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/2002—Dielectric waveguide filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of TM mould dielectric filters of cover plate welding, it includes cavity, cover plate and dielectric resonator；With being welded at the top of the cavity, the dielectric resonator is installed in the cavity for the cover plate lower surface, and the dielectric resonator upper surface is welded with the cover plate lower surface；The annular recess around dielectric resonator arrangement is provided with the cover plate lower surface；The annular recess and the dielectric resonator are coaxially arranged；The groove bottom of the annular recess and a trough wall surface at least intersection for the annular recess.The present invention is simple in construction, and it is effectively improved reliability of the TM moulds dielectric filter under temperature change of cover plate welding, reduced caused by welding position cracking caused by avoiding stress concentration device performance, it is serious when cause the technical problem of component failure.
Description
Technical field
The present invention relates to a kind of TM moulds dielectric filter, belongs to wave filter technology field, more particularly to a kind of welding of cover plate
TM mould dielectric filters.
Background technology
As the requirement of the high reliability to equipment and miniaturization is increasing, the TM mould dielectric filters of cover plate welding
It is frequent using starting gradually.The TM moulds dielectric filter of traditional cover plate welding uses crimping mode more, although which can
Higher nonloaded Q is obtained, but pressure is difficult under temperature change lasting holding stabilization, reliability is difficult to be guaranteed.
In the prior art, in general TM moulds dielectric filter includes cavity, dielectric resonator and cover plate, dielectric resonance
Device is arranged in cavity and dielectric resonator one end is welded with cavity welding, the other end and cover plate, due to the system of dielectric resonator
It is different with the making material of cavity and cover plate to make material, because the thermal coefficient of expansion of metal material and dielectric resonator material has
Institute is different, it is however generally that and the thermal coefficient of expansion of metal material is higher than dielectric resonator material, therefore when the temperature increases, cavity
Dielectric resonator swell increment is greater than with the swell increment of cover plate, can now produce stress, if stress cannot discharge or drop
It is low, welding position cracking is may result in, so as to reduce device performance, component failure is caused when serious.Similarly, upon a drop in temperature
Also identical phenomenon can be produced.
The content of the invention
In view of the above-mentioned drawbacks of the prior art, the technical problem to be solved in the present invention is to provide a kind of welding of cover plate
TM mould dielectric filters, it can reduce medium and the stress accumulation at cover plate, medium and cavity welding, improve the filter of TM moulds medium
Reliability of the ripple device under temperature change.
In order to solve the above technical problems, present invention employs the TM mould dielectric filters of such a cover plate welding, it is wrapped
Include cavity, cover plate and dielectric resonator；With being welded at the top of the cavity, the dielectric resonator is installed on for the cover plate lower surface
In the cavity, the dielectric resonator upper surface is welded with the cover plate lower surface；Ring is provided with the cover plate lower surface
Around the annular recess of dielectric resonator arrangement；The annular recess and the dielectric resonator are coaxially arranged；The ring-type
The groove bottom of groove and a trough wall surface at least intersection for the annular recess.
In a kind of preferred embodiment of the present invention, the vertical section of the annular recess is rectangle or trapezoidal or triangle
Shape.
In a kind of preferred embodiment of the present invention, the annular recess includes inwall, outer wall and bottom land；The bottom land
For horizontal plane；The inwall and the outer wall are each perpendicular to the bottom land；The inwall and wall coaxial arrangement.
In a kind of preferred embodiment of the present invention, the groove width of the annular recess is more than 1mm.
In a kind of preferred embodiment of the present invention, groove depth≤1mm of 0.1mm≤annular recess.
In a kind of preferred embodiment of the present invention, the through hole for installing tuning screw is provided with the cover plate.
In a kind of preferred embodiment of the present invention, through hole on the cover plate and the annular recess on the cover plate it
Between annular boss cross-sectional area be more than or equal to the dielectric resonator cross-sectional area.
In a kind of preferred embodiment of the present invention, the dielectric resonator lower surface is welded with the cavity bottom.
In a kind of preferred embodiment of the present invention, dielectric resonator lower surface is welded with cavity bottom.
The beneficial effects of the invention are as follows：The present invention is simple in construction, and it is welded according to the metal and medium of TM mould dielectric filters
In temperature change, the stress of its weld can be toward the integrally-built most weakness aggregation accumulation of TM mould dielectric filters after connecing
Principle, the annular recess coaxially arranged by being arranged at dielectric resonator on the cover board, so as to which dielectric resonator be connected in cover plate
The stress at place and/or the stress split-up of dielectric resonator and cavity bottom junction are connect to the inwall and bottom land of annular recess
Intersection be herein whole TM moulds dielectric filter most weakness, so as to effectively reduce dielectric resonator and cover plate
Stress accumulation at weld, dielectric resonator and cavity welding, so as to be effectively improved TM mould dielectric filters in temperature
The lower reliability of change, reduction device performance caused by welding position cracking caused by avoiding stress concentration, it is serious when cause
The technical problem of component failure；Meanwhile the groove width and groove depth of the invention by rationally designing annular recess, can effectively it ensure
Solves the versatility that the present invention is improved while above-mentioned technical problem.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the TM mould dielectric filters of cover plate welding of the embodiment of the present invention；
Fig. 2 is a kind of sectional view of the TM mould dielectric filters of cover plate welding of the embodiment of the present invention；
Fig. 3 is a kind of structural representation of the cover plate of the TM mould dielectric filters of cover plate welding of the embodiment of the present invention；
In figure：1- cavitys；2- cover plates；3- dielectric resonators；4- tuning screws；5- dielectric resonators lower surface and cavity
The solder side of solder side, 6- dielectric resonators upper surface and cover plate, 7- annular recess (are obtained) by Xiyanping injection, and 8- ring-types are convex
Platform, 9- intersections, 8.1- inwalls, 8.2- outer walls, 8.3- bottom lands.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
The structural representation of the TM mould dielectric filters welded from a kind of cover plate shown in specification, the present invention are a kind of
The TM moulds dielectric filter of cover plate welding includes cavity 1, covers the cover plate 2 on cavity 1, the dielectric resonance in cavity 1
Device 3 and the tuning screw 4 on cover plate 2, the lower surface of cover plate 2 are welded with the top of cavity 1, and dielectric resonator 3 is installed on cavity 1
Interior, the upper surface of dielectric resonator 3 is welded with the lower surface of cover plate 2, and the lower surface of dielectric resonator 3 is welded with the bottom of cavity 1；Cover plate 2
It is provided with lower surface along dielectric resonator 3 axially along the annular recess 7 stretched, the vertical section of annular recess 7 is rectangle or ladder
Shape or triangle, i.e. annular recess 7 can at least form an intersection 9 for being used for concentrated stress, therefore the bottom land of annular recess 7
8.3 must be one aspherical (when the vertical section of annular recess 7 is triangle, then bottom land 8.3 is a circle), while bottom land
8.3 cannot cambered or chamfering with the intersection of inwall 8.1 and outer wall 8.2；Annular recess 7 and 3 coaxial cloth of dielectric resonator
Put；Annular recess 7 includes inwall 8.1, outer wall 8.2 and bottom land 8.3, and bottom land 8.3 is horizontal plane, and inwall 8.1 and outer wall 8.2 hang down
Directly in bottom land 8.3；Inwall 8.1 and outer wall 8.2 are coaxially arranged, and the diameter of inwall 8.1 is more than the external diameter of dielectric resonator 3, in temperature
During degree change, dielectric resonator 3 and the stress and dielectric resonator 3 of the top weld of cover plate 2 and answering for the bottom weld of cavity 1
Power can be distributed to the inwall 8.1 of annular recess 7 and the intersection 9 of bottom land 8.3, so as to reduce medium and cover plate, medium and chamber
The stress accumulation of body weld, improve reliability of the TM moulds dielectric filter under temperature change.Outer wall 8.2 and inwall 8.1
Between spacing be that the groove width of annular recess 7 is more than 1mm, the width of annular recess 7 is wider, then the inwall 8.1 in temperature change
It is higher with the reliability of the smaller wave filter of stress accumulation of the intersection 9 of bottom land 8.3 in temperature changing process, but ring-type
The wide structural strength that can also reduce wave filter of groove 7, the reliability of wave filter, therefore annular recess 7 are reduced from another point of view
The selection of width needs to combine actual conditions, does appropriate compromise, and general width should be more than 1mm.Bottom land 8.3 is apart from cover plate 2
Lower surface be annular recess 7 groove depth 0.1-1mm, its material according to selected by cover plate 2 difference and change.To ensure to weld
Connect intensity, the cross-sectional area of the annular boss 8 between the annular recess 7 on through hole and cover plate 2 on cover plate 2, which is more than or equal to, to be situated between
The cross-sectional area of matter resonator 3.
Above-described embodiment is the manufacture processing for the ease of annular recess 7, so the vertical section of annular recess 7 is manufactured into
Rectangle (i.e. with the direct groove milling of milling cutter), remaining technical scheme again may be by wire cutting (such as triangle, trapezoidal etc.)
Mode obtains.
The present invention is by thin by cover plate milling, in temperature change, by caused stress transfer to the side of cover plate milling thin section point
Edge, solve the problems, such as that the TM moulds dielectric filter of cover plate welding pad in temperature change is easy to crack, improve TM moulds Jie
The reliability of matter wave filter.
It should be appreciated that the embodiment of the present invention is these are only, but protection scope of the present invention is not limited to
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 (8)
1. a kind of TM mould dielectric filters of cover plate welding, including cavity (1), cover plate (2) and dielectric resonator (3)；The lid
With being welded at the top of the cavity (1), the dielectric resonator (3) is installed in the cavity (1), is given an account of for plate (2) lower surface
Welded with the cover plate (2) lower surface matter resonator (3) upper surface；It is characterized in that：It is provided with cover plate (2) lower surface
Around the annular recess (7) of the dielectric resonator (3) arrangement；The annular recess (7) and the dielectric resonator (3) are coaxial
Arrangement；The groove bottom of the annular recess (7) and the trough wall surface of the annular recess (7) at least intersection.
A kind of 2. TM mould dielectric filters of cover plate welding according to claim 1, it is characterised in that：The annular recess
(7) vertical section is rectangle or trapezoidal or triangle.
A kind of 3. TM mould dielectric filters of cover plate welding according to claim 1, it is characterised in that：The annular recess
(7) inwall (8.1), outer wall (8.2) and bottom land (8.3) are included；The bottom land (8.3) is horizontal plane；The inwall (8.1) and institute
State outer wall (8.2) and be each perpendicular to the bottom land (8.3)；The inwall (8.1) and the outer wall (8.2) are coaxially arranged.
A kind of 4. TM mould dielectric filters of cover plate welding according to claim 1, it is characterised in that：The annular recess
(7) groove width is more than 1mm.
A kind of 5. TM mould dielectric filters of cover plate welding according to claim 1, it is characterised in that：0.1mm≤described
Groove depth≤1mm of annular recess (7).
A kind of 6. TM mould dielectric filters of cover plate welding according to claim 1, it is characterised in that：The cover plate (2)
On be provided with for installing the through holes of tuning screw (4).
A kind of 7. TM mould dielectric filters of cover plate welding according to claim 6, it is characterised in that：The cover plate (2)
On through hole and the cover plate (2) on annular recess (7) between annular boss (8) cross-sectional area be more than or equal to it is described
The cross-sectional area of dielectric resonator (3).
A kind of 8. TM mould dielectric filters of cover plate welding according to claim 1, it is characterised in that：The dielectric resonance
Welded with the cavity (1) bottom device (3) lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710502344.6A CN107425241A (en) | 2017-06-27 | 2017-06-27 | A kind of TM mould dielectric filters of cover plate welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710502344.6A CN107425241A (en) | 2017-06-27 | 2017-06-27 | A kind of TM mould dielectric filters of cover plate welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107425241A true CN107425241A (en) | 2017-12-01 |
Family
ID=60426214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710502344.6A Pending CN107425241A (en) | 2017-06-27 | 2017-06-27 | A kind of TM mould dielectric filters of cover plate welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107425241A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11990661B2 (en) | 2018-12-28 | 2024-05-21 | Huawei Technologies Co., Ltd. | TM mode filter and method for manufacturing TM mode filter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201804987U (en) * | 2010-06-29 | 2011-04-20 | 深圳市威富通讯技术有限公司 | Dielectric fixing device of TM (transverse magnetic) mode dielectric filter |
| CN102881983A (en) * | 2012-10-18 | 2013-01-16 | 宁波泰立电子科技有限公司 | Single-resonance and double-resonance mould structure of TM (Transverse Magnetic) dielectric resonator |
| CN202839932U (en) * | 2012-10-18 | 2013-03-27 | 宁波泰立电子科技有限公司 | Single and double resonance mode structure of TM (transverse magnetic) medium resonator |
| CN204947045U (en) * | 2015-08-07 | 2016-01-06 | 深圳市迈特通信设备有限公司 | A kind of novel TM film both-end short circuit dielectric filter |
| CN205069824U (en) * | 2015-09-30 | 2016-03-02 | 李登峰 | High performance dielectric filter |
-
2017
- 2017-06-27 CN CN201710502344.6A patent/CN107425241A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201804987U (en) * | 2010-06-29 | 2011-04-20 | 深圳市威富通讯技术有限公司 | Dielectric fixing device of TM (transverse magnetic) mode dielectric filter |
| CN102881983A (en) * | 2012-10-18 | 2013-01-16 | 宁波泰立电子科技有限公司 | Single-resonance and double-resonance mould structure of TM (Transverse Magnetic) dielectric resonator |
| CN202839932U (en) * | 2012-10-18 | 2013-03-27 | 宁波泰立电子科技有限公司 | Single and double resonance mode structure of TM (transverse magnetic) medium resonator |
| CN204947045U (en) * | 2015-08-07 | 2016-01-06 | 深圳市迈特通信设备有限公司 | A kind of novel TM film both-end short circuit dielectric filter |
| CN205069824U (en) * | 2015-09-30 | 2016-03-02 | 李登峰 | High performance dielectric filter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11990661B2 (en) | 2018-12-28 | 2024-05-21 | Huawei Technologies Co., Ltd. | TM mode filter and method for manufacturing TM mode filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171201 |
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| RJ01 | Rejection of invention patent application after publication |