CN102324617A - Two-end-grounded TM (Transverse Magnetic) mode medium resonator - Google Patents
Two-end-grounded TM (Transverse Magnetic) mode medium resonator Download PDFInfo
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- CN102324617A CN102324617A CN201110190729A CN201110190729A CN102324617A CN 102324617 A CN102324617 A CN 102324617A CN 201110190729 A CN201110190729 A CN 201110190729A CN 201110190729 A CN201110190729 A CN 201110190729A CN 102324617 A CN102324617 A CN 102324617A
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Abstract
The invention discloses a two-end-grounded TM (Transverse Magnetic) mode medium resonator, which comprises a medium resonant post, a metal resonant cavity and a cover plate, wherein the medium resonant post is positioned in the metal resonant cavity; the lower end face of the medium resonant post is contacted with the bottom surface of the metal resonant cavity; and the cover plate is positioned on the metal resonant cavity. The TM mode medium resonator is characterized in that: a conducting elastomer gasket is arranged between the upper end face of the medium resonant post and the cover plate, and is pre-stressed between the medium resonant post and the cover plate. In the invention, the conducting elastomer gasket is adopted, and is particularly pre-stressed between the medium resonant post and the cover plate, so that tight contact between the medium resonant post and the metal resonant cavity is ensured by the resilience force of the pre-stressed conducting elastomer gasket, uninterrupted transmission of current is ensured, current leakage can be effectively prevented, the performance of the TM mode medium resonator is improved, and the size of the entire medium resonator is reduced.
Description
Technical field
The present invention relates to the passive antenna feeder device in wireless communication field, be specifically related to a kind of two-terminal-grounding TM mould dielectric resonator.
Background technology
For a long time, filter plays an important role in the processing of electronic signal always, and it has signal that filters frequency of utilization and the function that suppresses interference signal.Fast development along with microwave wireless communication; The resource of frequency range in short supply; Performance and volume to filter have proposed increasingly high requirement, and traditional wire chamber filter can not satisfy these requirements, so want to improve the performance of ripple device and reduce its volume by TM mould dielectric resonator.
TM mould dielectric resonator has single-end earthed realizes filtering performance with both-end ground connection dual mode.Under the equal performance, the mode of both-end ground connection is littler than mode volume single-end earthed, and weight is lighter, and the mounting means of both-end ground connection will progressively replace mode single-end earthed.
The method of traditional both-end ground connection is with behind the silver in the roasting of resonator two ends, and the method through welding or crimping is installed in filter (duplexer) wire chamber again.But because the coefficient of expansion of ceramic resonator differs greatly with metal, the reliability of this installation method is very poor:
1, the medium bottom increases decreased performance with metallic cavity base plate contact resistance under the high low temperature.
2, change through the high low temperature of many wheels after, resonator is because of being exceeded stretching, the extruding the coefficient of expansion own under, damage occurs or ruptures, and causes resonance frequency, Q value instability, makes the filter (duplexer) can't operate as normal.
Therefore, above-mentioned this TM mould dielectric filter (duplexer) is difficult on market, promote.
Summary of the invention
The objective of the invention is in order to solve the deficiency that the above-mentioned background technology exists; A kind of two-terminal-grounding TM mould dielectric resonator is proposed; Make it pass through a kind of simple assembly structure; Avoid the rigid connection of unlike material, guarantee that the dielectric resonance post contacts well with the wire chamber surface under the high low temperature, to improve the reliability of filter under high low temperature.
For realizing above-mentioned purpose; The present invention adopts following technical scheme: a kind of two-terminal-grounding TM mould dielectric resonator; Comprise dielectric resonance post, metal resonant cavity and cover plate, the dielectric resonance post is positioned at the metal resonant cavity, and the lower surface of dielectric resonance post contacts with metal resonant cavity bottom surface; Cover plate be positioned at the metal resonant cavity above; It is characterized in that between said dielectric resonance post upper surface and cover plate, be provided with the conductive elastomer pad, the conductive elastomer pad has precompression between dielectric resonance post and said cover plate.
Preferably, said conductive elastomer pad adopts the gasket sheet of non-metallic elastic material preparation, between the pad both ends of the surface, is covered with small through hole, and above-mentioned gasket surface and small through hole inwall carry out metalized.
Furtherly, said small through hole diameter is 0.2-0.5mm, is evenly arranged in conductive elastomer pad end face.
Furtherly, said metalized is electroless copper plating or heavy silver.
Preferably; Be provided with a location hole in the middle of the said conductive elastomer pad; Be provided with a cannelure with corresponding position, said dielectric resonance post upper surface cover inner surface; The conductive elastomer pad places in this cannelure, and the cannelure internal diameter is bigger than conductive elastomer pad external diameter, and the degree of depth of cannelure is identical with the conductive elastomer spacer thickness.
Furtherly, dark high in the said dielectric resonance post aspect ratio metal resonant cavity, to guarantee that the conductive elastomer pad is compressed under the normal temperature.
Preferably; Said dielectric resonance post is provided with center through hole; Be provided with a boss with the metal resonant cavity of center through hole corresponding position, dielectric resonance post lower surface, this boss diameter is littler than dielectric resonance post center through hole, and the lower surface of dielectric resonance post is through center through hole and metal resonant cavity convex platform location.
In such scheme, said TM mould dielectric resonator comprises band pass filter, band resistance filter.
The present invention is owing to adopt the conductive elastomer pad; Especially the conductive elastomer pad is provided with precompression between dielectric resonance post and said cover plate; Make the present invention rely on the resilience force behind the conductive elastomer gasket compression to guarantee closely contact between dielectric resonance post and the metal resonant cavity, guarantee that electric current transmits incessantly, can prevent effectively that electric current from leaking outside; Thereby improve TM mould dielectric resonator performance, reduced whole dielectric resonator volume.
The present invention adopts the conductive elastomer pad to avoid the rigid connection of unlike material, has solved the deficiency that the above-mentioned background technology exists, and guarantees that the dielectric resonance post well contacts with metal resonant cavity surface under the high low temperature.Under high low temperature condition, dielectric resonance post and metal resonant cavity are free to dwindle or expand, and make the injury-free or fracture of dielectric resonance post to have guaranteed the stability of resonance frequency, improve the reliability of filter under high low temperature.
Describe the present invention in detail below in conjunction with accompanying drawing and embodiment, so that those skilled in the art further understand.
Description of drawings
Fig. 1 is an embodiment of the invention explosive view;
Fig. 2 is that dielectric resonator embodiment of the present invention assembles generalized section;
Fig. 3 is a M place partial enlarged drawing among Fig. 2;
Fig. 4 is a conductive elastomer pad sketch map.
Embodiment
Referring to Fig. 1, Fig. 2, present embodiment relates to a kind of two-terminal-grounding TM mould dielectric resonator, comprises tuning screw rod 1, rigging screw 2, cover plate 3, conductive elastomer pad 4, dielectric resonance post 5 and metal resonant cavity 6.Dielectric resonance post 5 is positioned at metal resonant cavity 6, cover plate 3 be positioned at metal resonant cavity 6 above, be connected with metal resonant cavity 6 with rigging screw 2.Conductive elastomer pad 4 is located between dielectric resonance post upper surface and the cover plate, and the conductive elastomer pad has precompression between dielectric resonance post and cover plate.
Wherein, conductive elastomer pad 4 adopts the epoxy plate base material, and copper is covered on the two sides, and a circular hole is made a call in the centre, as the location hole that is assembled to cover plate 9.Between the pad both ends of the surface, being covered with diameter is 0.2-0.5mm small through hole 10, and above-mentioned gasket surface and small through hole inwall carry out metalized.Through electroless copper plating,, guarantee its good electrical conductivity with conductive elastomer pad small through hole 10 and periphery metallization.Referring to Fig. 4
The dielectric resonance post is provided with center through hole 7, and the center through hole upper and lower end is done debugging and location respectively.Silver in the two ends roasting of dielectric resonance post, and at the cylindrical angle of falling 0.5mm respectively.Exceed 0.1mm deeply in the dielectric resonance post aspect ratio metal resonant cavity, guarantee that promptly the conductive elastomer pad is compressed 0.1mm under the normal temperature.
Be provided with a boss 8 that 0.5mm is high with the metal resonant cavity of center through hole corresponding position, dielectric resonance post lower surface, this boss diameter accurately is installed in the cavity to make things convenient for the dielectric resonance post than the little 0.1mm of dielectric resonance post center through hole.The lower surface of dielectric resonance post is through center through hole 7 and metal resonant cavity convex platform 8 location.
Said cover plate 3 is used for closed metal resonant cavity 8; Be provided with a cannelure with corresponding position, dielectric resonance post upper surface cover inner surface; The conductive elastomer pad places in this cannelure; The cannelure internal diameter is advisable (realizing the interference fit location) than the big 0.1mm of conductive elastomer pad internal diameter, and the degree of depth of cannelure is identical with the conductive elastomer spacer thickness.Other has on the cover board has a tapped through hole, is used to install tuning screw rod 1, and tuning screw rod 1 stretches in the dielectric resonance post center through hole 7.
Resilience force behind the said conductive elastomer gasket compression of present embodiment can guarantee under high low temperature, can closely contact between dielectric resonance post and the cover plate, thereby improves the filtering reliability.In addition, this dielectric resonator is simple in structure, and is easy to assembly.
Although the foregoing description has been made detailed description to the present invention; But it only is the present invention's part embodiment, rather than whole embodiment, and people can also obtain other embodiment according to present embodiment under without creative prerequisite; As; The conductive elastomer pad also can fix through other modes and cover plate, as long as help tight contact, is convenient to current delivery and gets final product.These embodiment belong to protection range of the present invention.
Claims (8)
1. two-terminal-grounding TM mould dielectric resonator; Comprise dielectric resonance post, metal resonant cavity and cover plate, the dielectric resonance post is positioned at the metal resonant cavity, and the lower surface of dielectric resonance post contacts with said metal resonant cavity bottom surface; Cover plate be positioned at the metal resonant cavity above; It is characterized in that between said dielectric resonance post upper surface and said cover plate, be provided with the conductive elastomer pad, the conductive elastomer pad has precompression between dielectric resonance post and cover plate.
2. a kind of two-terminal-grounding TM mould dielectric resonator according to claim 1; It is characterized in that; Said conductive elastomer pad adopts the gasket sheet of non-metallic elastic material preparation, between the pad both ends of the surface, is covered with small through hole, and above-mentioned gasket surface and small through hole inwall carry out metalized.
3. a kind of two-terminal-grounding TM mould dielectric resonator according to claim 2 is characterized in that said small through hole diameter is 0.2-0.5mm, is evenly arranged in conductive elastomer pad end face.
4. a kind of two-terminal-grounding TM mould dielectric resonator according to claim 2 is characterized in that, said metalized is electroless copper plating or heavy silver.
5. according at least one described a kind of two-terminal-grounding TM mould dielectric resonator among the claim 1-4; It is characterized in that; Be provided with a location hole in the middle of the said conductive elastomer pad, be provided with a cannelure with corresponding position, said dielectric resonance post upper surface cover inner surface, the cannelure internal diameter is bigger than conductive elastomer pad location hole aperture; The degree of depth of cannelure is identical with the conductive elastomer spacer thickness, and the conductive elastomer pad places in this cannelure.
6. a kind of two-terminal-grounding TM mould dielectric resonator according to claim 5 is characterized in that, and is dark high in the said dielectric resonance post aspect ratio metal resonant cavity, to guarantee that the conductive elastomer pad is compressed under the normal temperature.
7. according at least one described a kind of two-terminal-grounding TM mould dielectric resonator among the claim 1-4; It is characterized in that; Said dielectric resonance post is provided with center through hole; Be provided with a boss with the metal resonant cavity of center through hole corresponding position, dielectric resonance post lower surface, this boss diameter is littler than dielectric resonance post center through hole, and the lower surface of dielectric resonance post is through center through hole and metal resonant cavity convex platform location.
8. according at least one described a kind of two-terminal-grounding TM mould dielectric resonator among the claim 1-4, it is characterized in that said TM mould dielectric resonator comprises band pass filter, band resistance filter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110190729.6A CN102324617B (en) | 2011-07-08 | 2011-07-08 | Two-end-grounded TM (Transverse Magnetic) mode medium resonator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110190729.6A CN102324617B (en) | 2011-07-08 | 2011-07-08 | Two-end-grounded TM (Transverse Magnetic) mode medium resonator |
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| CN102324617A true CN102324617A (en) | 2012-01-18 |
| CN102324617B CN102324617B (en) | 2014-03-19 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637940A (en) * | 2012-04-27 | 2012-08-15 | 深圳市国人射频通信有限公司 | Dielectric filter band dielectric resonator thereof |
| CN103296370A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Resonant cavity |
| WO2015043300A1 (en) * | 2013-09-25 | 2015-04-02 | 中兴通讯股份有限公司 | Dielectric filter and method of assembling same |
| CN107202922A (en) * | 2017-05-24 | 2017-09-26 | 电子科技大学 | Strong-electromagnetic field environmentally conscious materialses microwave dielectric property studies test system and method |
| WO2018132985A1 (en) * | 2017-01-18 | 2018-07-26 | 华为技术有限公司 | Transverse magnetic mode dielectric resonator, filter, and communication device |
| US10333188B2 (en) | 2014-05-07 | 2019-06-25 | Huawei Technologies Co., Ltd. | Transverse magnetic (TM) mode dielectric filter |
| CN112072259A (en) * | 2019-06-11 | 2020-12-11 | 中兴通讯股份有限公司 | Dielectric resonator |
| WO2021102852A1 (en) * | 2019-11-28 | 2021-06-03 | 华为技术有限公司 | Dielectric filter and communication device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450645A (en) * | 2016-08-03 | 2017-02-22 | 武汉凡谷电子技术股份有限公司 | TM die dielectric resonator and dielectric filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546857A (en) * | 2009-04-21 | 2009-09-30 | 华为技术有限公司 | A medium resonator and its assembling method, medium filter |
| CN201725863U (en) * | 2010-04-27 | 2011-01-26 | 江苏江佳电子股份有限公司 | TM (Transverse Magnetic) mode dielectric resonator |
| CN202217778U (en) * | 2011-07-08 | 2012-05-09 | 武汉凡谷电子技术股份有限公司 | A TM mode dielectric resonator with two ends connected with a ground |
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2011
- 2011-07-08 CN CN201110190729.6A patent/CN102324617B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546857A (en) * | 2009-04-21 | 2009-09-30 | 华为技术有限公司 | A medium resonator and its assembling method, medium filter |
| CN201725863U (en) * | 2010-04-27 | 2011-01-26 | 江苏江佳电子股份有限公司 | TM (Transverse Magnetic) mode dielectric resonator |
| CN202217778U (en) * | 2011-07-08 | 2012-05-09 | 武汉凡谷电子技术股份有限公司 | A TM mode dielectric resonator with two ends connected with a ground |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296370A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Resonant cavity |
| CN103296370B (en) * | 2012-02-29 | 2018-02-16 | 深圳光启创新技术有限公司 | Resonator |
| CN102637940A (en) * | 2012-04-27 | 2012-08-15 | 深圳市国人射频通信有限公司 | Dielectric filter band dielectric resonator thereof |
| WO2015043300A1 (en) * | 2013-09-25 | 2015-04-02 | 中兴通讯股份有限公司 | Dielectric filter and method of assembling same |
| US10333188B2 (en) | 2014-05-07 | 2019-06-25 | Huawei Technologies Co., Ltd. | Transverse magnetic (TM) mode dielectric filter |
| WO2018132985A1 (en) * | 2017-01-18 | 2018-07-26 | 华为技术有限公司 | Transverse magnetic mode dielectric resonator, filter, and communication device |
| US11108122B2 (en) | 2017-01-18 | 2021-08-31 | Huawei Technologies Co., Ltd. | TM mode dielectric resonator including a resonant dielectric rod soldered to a fixing base within a housing baseplate, for forming a filter and a communications device |
| CN107202922A (en) * | 2017-05-24 | 2017-09-26 | 电子科技大学 | Strong-electromagnetic field environmentally conscious materialses microwave dielectric property studies test system and method |
| CN112072259A (en) * | 2019-06-11 | 2020-12-11 | 中兴通讯股份有限公司 | Dielectric resonator |
| WO2021102852A1 (en) * | 2019-11-28 | 2021-06-03 | 华为技术有限公司 | Dielectric filter and communication device |
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| CN102324617B (en) | 2014-03-19 |
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