CN109244612B - Miniaturized comb-shaped ceramic tube medium cavity filter - Google Patents
Miniaturized comb-shaped ceramic tube medium cavity filter Download PDFInfo
- Publication number
- CN109244612B CN109244612B CN201811137883.5A CN201811137883A CN109244612B CN 109244612 B CN109244612 B CN 109244612B CN 201811137883 A CN201811137883 A CN 201811137883A CN 109244612 B CN109244612 B CN 109244612B
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- 239000000919 ceramic Substances 0.000 title claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 50
- 238000013461 design Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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
- H01P1/207—Hollow waveguide filters
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Abstract
The invention discloses a novel miniaturized comb-shaped ceramic tube medium cavity filter, which belongs to the technical field of microwave components and parts and comprises a metal tube shell cavity, a metal tuning needle/column, a ceramic medium loading tube and a connector, wherein cavity through holes are formed in two opposite side walls of the metal tube shell cavity, the ceramic medium loading tube stretches into the cavity through hole on one side of the metal tube shell cavity, and the metal tuning needle/column stretches into the cavity through hole on the other side of the metal tube shell cavity; the comb-shaped ceramic tube medium cavity filter is miniaturized, has no fastening fittings, is easy to design, process and manufacture, is suitable for development and production of the filter in harsh environments with mechanical vibration, wide-temperature working and the like, and has important application value in modern electronic communication systems.
Description
Technical Field
The invention relates to the technical field of microwave components, in particular to a novel miniaturized comb-shaped ceramic tube medium cavity filter.
Background
The microwave filter is an indispensable key device in electronic countermeasure, radar, communication and other systems, and the comb-shaped cavity filter belongs to one of the microwave filters, and has the advantages of compact structure, good electromagnetic shielding, low insertion loss, high rectangular degree, good out-of-band rejection and the like. The typical structure of the current comb-shaped cavity filter is shown in fig. 1, and mainly comprises a metal cavity 1, a metal tuning screw 2, a metal tuning nut 3, a microwave connector 4 and the like, wherein the metal cavity realizes the coupling of a resonator unit and a unit of the filter, and the metal tuning screw realizes the accurate tuning of the filter.
Such conventional comb-cavity filters of the present invention have the following drawbacks.
Firstly, in order to obtain good microwave performance, the resonant unit of the cavity filter is related to wavelength, and air medium is adopted for loading, so that the cavity filter is huge, for example, a conventional comb-shaped cavity filter with a center frequency of 4.5GHz is large in size, and the length, width and height of the cavity filter are 50mm, 25mm and 15mm, so that the cavity filter is unfavorable for miniaturization of modern electronic equipment and systems.
And secondly, the metal screw is adopted for tuning, the metal nut is locked, and the volume occupied by the metal nut is irrelevant to the microwave performance of the product, so that the miniaturization of the cavity filter is not facilitated.
Disclosure of Invention
The invention aims to provide a novel miniaturized comb-shaped ceramic tube medium cavity filter so as to solve the problems.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the utility model provides a novel miniaturized comb-shaped ceramic tube medium cavity filter, includes metal tube shell cavity, metal tuning pin/post, ceramic medium loading tube and connector, wherein, the opposite both sides wall of metal tube shell cavity all is provided with the cavity through-hole, ceramic medium loading tube stretches into the cavity through-hole of one of them side of metal tube shell cavity, metal tuning pin/post stretches into the cavity through-hole of metal tube shell cavity opposite side.
The invention is characterized in that a metal tube shell cavity, a metal tuning pin/column, a ceramic medium loading tube and a connector work cooperatively, and the ceramic tube medium loading and tuning are adopted to improve the Q value of a filling material and realize low-loss design; the physical size of a 1/4 wavelength resonance unit of the compression filter is realized by adopting ceramic tube medium loading, and the miniaturization design is realized; the debugging ceramic tube is adopted to enter the cavity hole to realize the debugging design of the cavity filter, generate microwave resonance and realize microwave signal filtering. The working frequency band of the miniaturized comb-shaped ceramic tube medium cavity filter is covered to be 100 MHz-20 GHz, and the frequency band can replace the traditional comb-shaped cavity filter.
As a preferable technical scheme: the ceramic medium loading tube is bonded with the cavity through hole.
Namely, the ceramic tube fastening assembly of the miniaturized cavity filter is realized by adopting an adhesive technology.
As a preferable technical scheme: the metal tuning pins/posts are welded with the cavity through holes.
I.e. preferably a soldering process is used to achieve a miniaturized cavity filter tuning pin/post assembly design.
Compared with the prior art, the invention has the advantages that: the invention miniaturizes the comb-shaped ceramic tube medium cavity filter (such as a comb-shaped cavity filter with a center frequency of 4.5GHz, and a length, width and height of 25mm, 9.5mm, 4 mm), has no fastening fittings, and is easy to design, process and manufacture, suitable for development and production of the filter in harsh environments with mechanical vibration, wide temperature working and the like, and has important application value in modern electronic communication systems.
Drawings
Fig. 1 is a schematic diagram of a comb-cavity filter according to the prior art.
Fig. 2 is an exploded view of an embodiment of the present invention.
Fig. 3 and 4 are schematic structural views of an assembled embodiment of the present invention.
Fig. 5 is a schematic illustration of the connection of the metal tuning pins/posts of fig. 3 to the metal shell cavity.
Fig. 6 is a schematic diagram of the connection of the ceramic dielectric loading tube to the metal shell cavity of fig. 4.
Fig. 7 is a schematic diagram of a filter debugging structure according to an embodiment of the present invention.
In the figure: 1. a metal cavity; 2. a metal tuning screw; 3. a metal tuning nut; 4. a microwave connector; 5. a metal shell cavity; 6. metal tuning pins/posts; 7. a ceramic dielectric loading tube; 8. a solder layer; 9. and an adhesive layer.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Examples:
referring to fig. 2, 3 and 4, a novel miniaturized comb-shaped ceramic tube dielectric cavity filter comprises a metal tube shell cavity 5, a metal tuning needle/column 6, a ceramic dielectric loading tube 7 and a microwave connector 4, wherein cavity through holes are formed in two opposite side walls of the metal tube shell cavity 5, the ceramic dielectric loading tube 7 stretches into the cavity through hole on one side of the metal tube shell cavity 5, and the metal tuning needle/column 6 stretches into the cavity through hole on the other side of the metal tube shell cavity 5; the metal tube shell cavity 5 comprises an upper cover, a lower bottom plate and a middle cavity.
The ceramic dielectric loading tube 7 is bonded with the cavity through hole, that is, the ceramic tube fastening assembly of the miniaturized cavity filter is realized by adopting a bonding process, as shown in fig. 6, an adhesive layer 9 is arranged between the ceramic dielectric loading tube 7 and the cavity through hole of the metal tube shell cavity 5.
The metal tuning pins/columns 6 are welded with the cavity through holes, namely, a soldering process is adopted to realize the assembly design of the tuning pins/columns of the miniaturized cavity filter, as shown in fig. 5, a soldering tin layer 8 is arranged between the metal tuning pins/columns 6 and the cavity through holes of the metal tube shell cavity 5.
The debugging of the cavity filter is realized by debugging the length of the ceramic tube entering the cavity hole as shown in fig. 7.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (3)
1. A miniaturized comb-shaped ceramic tube medium cavity filter is characterized in that: the metal tube shell comprises a metal tube shell cavity, a metal tuning needle/column, a ceramic medium loading tube, a resonance unit and a connector, wherein cavity through holes are formed in two opposite side walls of the metal tube shell cavity, the ceramic medium loading tube extends into the resonance unit through one side of the metal tube shell cavity, and the metal tuning needle/column extends into the resonance unit through the other side of the metal tube shell cavity.
2. A miniaturized comb-like ceramic tube dielectric cavity filter as set forth in claim 1, wherein: the ceramic medium loading tube is bonded with the cavity through hole.
3. A miniaturized comb-like ceramic tube dielectric cavity filter as set forth in claim 1, wherein: and the metal tuning pins/columns are welded with the cavity through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811137883.5A CN109244612B (en) | 2018-09-28 | 2018-09-28 | Miniaturized comb-shaped ceramic tube medium cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811137883.5A CN109244612B (en) | 2018-09-28 | 2018-09-28 | Miniaturized comb-shaped ceramic tube medium cavity filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109244612A CN109244612A (en) | 2019-01-18 |
| CN109244612B true CN109244612B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811137883.5A Active CN109244612B (en) | 2018-09-28 | 2018-09-28 | Miniaturized comb-shaped ceramic tube medium cavity filter |
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Citations (17)
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| KR101797519B1 (en) * | 2016-10-24 | 2017-11-14 | 진영달 | ceramic cavity filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104009276A (en) * | 2013-02-25 | 2014-08-27 | 中兴通讯股份有限公司 | Dielectric resonator, assembly method and dielectric filter |
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2018
- 2018-09-28 CN CN201811137883.5A patent/CN109244612B/en active Active
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| US6002311A (en) * | 1997-10-23 | 1999-12-14 | Allgon Ab | Dielectric TM mode resonator for RF filters |
| US6362707B1 (en) * | 2000-01-21 | 2002-03-26 | Hughes Electronics Corporation | Easily tunable dielectrically loaded resonators |
| CN1983711A (en) * | 2005-10-24 | 2007-06-20 | M/A-Com公司 | Electronically tunable dielectric resonator circuits |
| CN102165640A (en) * | 2008-04-14 | 2011-08-24 | 阿尔卡特朗讯 | Suspended dielectric combline cavity filter |
| WO2010147417A2 (en) * | 2009-06-18 | 2010-12-23 | 주식회사 에이스테크놀로지 | Frequency cavity filter having improved assembly error and a bolt used therefor |
| CN101630768A (en) * | 2009-08-11 | 2010-01-20 | 京信通信系统（中国）有限公司 | Cavity medium filter |
| CN102097670A (en) * | 2011-02-18 | 2011-06-15 | 成都泰格微波技术股份有限公司 | Hybrid TM (Transverse Magnetic) mode dielectric filter |
| CN102760923A (en) * | 2012-08-02 | 2012-10-31 | 深圳市国人射频通信有限公司 | Medium filter |
| CN104037484A (en) * | 2013-03-08 | 2014-09-10 | 中兴通讯股份有限公司 | Dielectric resonator and dielectric filter |
| CN103151595A (en) * | 2013-04-02 | 2013-06-12 | 四川九洲电器集团有限责任公司 | Resonator with liner resonance rod |
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| KR101797519B1 (en) * | 2016-10-24 | 2017-11-14 | 진영달 | ceramic cavity filter |
| CN107910624A (en) * | 2017-11-06 | 2018-04-13 | 江苏贝孚德通讯科技股份有限公司 | Coated by dielectric tunable filter and its design method, adjustable duplexer |
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| CN109244612A (en) | 2019-01-18 |
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