CN104241751A - Dielectric filter port coupling structure - Google Patents
Dielectric filter port coupling structure Download PDFInfo
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- CN104241751A CN104241751A CN201410455876.5A CN201410455876A CN104241751A CN 104241751 A CN104241751 A CN 104241751A CN 201410455876 A CN201410455876 A CN 201410455876A CN 104241751 A CN104241751 A CN 104241751A
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Abstract
The invention relates to a dielectric filter port coupling structure. The dielectric filter port coupling structure comprises a plate-shaped body and a cover plate. First channel resonant cavities and second channel resonant cavities are formed in the face, adjacent to the cover plate, of the plate-shaped body, and coupling windows are arranged between the resonant cavities of the same channel. Resonant columns are arranged in the resonant cavities, an input port and an output port are formed in the two ends of the plate-shaped body respectively, the input port and the output port are respectively formed in the position, between the first resonant cavity of the first channel and the first resonant cavity of the second cavity or between the last resonant cavity of the first channel and the last resonant cavity of the second channel, of the side face of the plate-shaped body, and transmission channels are arranged between the input port and the two first resonant cavities and between the output port and the two last resonant cavities. The dielectric filter port coupling structure is characterized in that transverse coupling copper sheets are connected between the inner end of the input port or the inner end of the output port and the two first resonant cavities or the two last resonant cavities. The dielectric filter port coupling structure is good in consistency, stable in performance, good in quality, easy to install, low in cost and suitable for communication equipment in a wireless communication base station.
Description
Technical field
The present invention relates to a kind of dielectric filter.Specifically, be port coupled structure Wireless Telecom Equipment being used for leach the dielectric filter of system clutter, duplexer or mixer.Be applicable on the communication equipment in radio communication base station.
Background technology
Manufacture field at Wireless Telecom Equipment all to know, the port coupled modes of dielectric filter, duplexer or mixer are good and bad, decide the electric property quality of dielectric filter, duplexer or mixer.Therefore, at the design of dielectric filter, duplexer or mixer, production industry, all the port coupled modes of dielectric filter, duplexer or mixer are paid attention to especially.
At present, the port coupled modes of dielectric filter, duplexer or mixer are mostly adopt coupling copper rod or coupling copper wire, and coupling copper rod or coupling copper wire one end are connected to the inner end inputing or outputing port, the other end is that hanging shape stretches in corresponding first resonant cavity or last resonant cavity, make to only have one end of coupling copper rod or coupling copper wire to fix, and the other end is hanging shape.Because coupling copper rod or copper wire only have one end to fix, in assembling process, need position coupling copper rod with fixture.And the resonant cavity of filter is all aluminum alloy frequency, and in order to improve the electrical conductivity of resonant cavity, the surface of resonant cavity is all coated with one deck silver layer again.Like this, in cramp assembling and disassembling process, resonant cavity surface will certainly be touched, cause resonant cavity surface to be scraped off.In addition, dielectric filter, duplexer or mixer can be subject to external impacts unavoidably in production, test, transport, use procedure, coupling copper rod arc broken coupling copper wire is easily out of shape, thus has influence on the stability of every electricity function index of filter.Therefore, adopt the dielectric filter of above-mentioned coupled modes, duplexer or mixer, make the consistency of each product poor, unstable properties, of poor quality.Again due to coupling copper rod or coupling copper wire only have one end to fix, coupling copper rod or coupling copper wire different again from the material of plate-like body, make they thermal coefficient of expansion difference.And residing bad environments in dielectric filter, duplexer or mixer use procedure, the temperature difference is usually between-45 ~+80 degrees Celsius, like this, also can bring extreme influence to the performance of dielectric filter, duplexer or mixer, also can have influence on the consistency of product, stability and quality.Again owing to need, by fixture, not only install cumbersome, and production efficiency being low in installation process.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of dielectric filter port coupled structure.This dielectric filter port coupled structure, not only good product consistency, stable performance, quality is good, and installs easily, and production cost is low.
The problems referred to above that the present invention will solve are realized by following technical scheme:
Dielectric filter port coupled structure of the present invention comprises plate-like body and cover plate, the plate-like body one side adjacent with cover plate there are first passage resonant cavity and second channel resonant cavity, coupling window is had between the resonant cavity of same passage, all resonant column is had in described resonant cavity, the two ends of described plate-like body have input port and output port respectively, described input port and output port are on that side of the plate-like body between first resonant cavity of first passage and the first resonant cavity of second channel or between last resonant cavity of first passage and last resonant cavity of second channel respectively, and all have transmission channel between described input port and two the first resonant cavitys and between output port and two last those resonant cavitys.Be characterized in all being connected with between described input port inner end with two the first resonant cavitys horizontal type to be coupled copper sheet, be all connected with horizontal type between described output port inner end with two last resonant cavitys and be coupled copper sheet.
Wherein, all have the first convex platform in transmission channel between input port or output port and two the first resonant cavitys or last resonant cavity, relative with described first resonant cavity or last resonant cavity and with input port or adjacent that chamber wall of output port fixed edge inside all have the second convex platform.Two horizontal type coupling copper sheets are L shape, their perpendicular section end is all connected with input port or output port, their kink is all connected with described first convex platform, and their crosspiece end to be stretched into respectively in corresponding first resonant cavity or is fixed on corresponding second convex platform in last resonant cavity.
Described horizontal type coupling copper sheet kink is all connected on described first convex platform by insulated screw, and their crosspiece end is connected on corresponding second convex platform by insulated screw and insulation spacer respectively.
Be in that section of horizontal type coupling copper sheet in two the first resonant cavitys or last resonant cavity, what it was adjacent with corresponding resonant column is arc-shaped side.
Take such scheme, have the following advantages:
As can be seen from the above scheme, to be coupled copper sheet owing to being all connected with horizontal type between described input port inner end with two the first resonant cavitys, to be all connected with horizontal type between described output port inner end with two last resonant cavitys and to be coupled copper sheet.Make the two ends of horizontal type coupling copper sheet and centre that insulated screw all can be adopted to be fixed on relevant position, just can realize the location of position without fixture, compared with background technology, avoid owing to using fixture to occur the scratch situation that resonant cavity surface is caused.All can adopt due to the horizontal type coupling two ends of copper sheet and centre again and be screwed, even if be subject to external impacts in the production of dielectric filter, duplexer or mixer, test, transport, use procedure, coupling copper sheet is not yielding yet, thus avoids the stability influence to the every electricity function index of filter.All can adopt due to the horizontal type coupling two ends of copper sheet and centre again and be screwed, even if be in the larger adverse circumstances of temperature difference span, also can not be different from the thermal coefficient of expansion of plate-like body and have influence on the consistency of product, stable and quality because of the horizontal type copper sheet that is coupled.Therefore, adopt the present invention of above-mentioned coupled modes, the consistency of each product is good, stable performance, and quality is good.Again owing to by fixture, not only need not install than being easier to, and improve production efficiency in installation process.
Accompanying drawing explanation
Fig. 1 is dielectric filter port coupled structure schematic diagram of the present invention;
Fig. 2 is the A-A cross-sectional schematic of Fig. 1;
Fig. 3 is the B-B cross-sectional schematic of Fig. 1;
Fig. 4 is the C-C cross-sectional schematic of Fig. 1.
Embodiment
As shown in Fig. 1 ~ Fig. 4, dielectric filter port coupled structure of the present invention comprises plate-like body 1 and cover plate 3, plate-like body 1 one side adjacent with cover plate 3 is processed with two first passage resonant cavitys and two second channel resonant cavitys, coupling window 16 is all processed with between the resonant cavity of same passage, on cover plate 3 position relative with coupling window 16, equal processing screw hole, is furnished with in screw and has the first tuning screw 7.All be provided with resonant column 9 in described resonant cavity, cover plate 3 position relative with each resonant column 9 is all processed with screw, and screw is built with second tune screw 14.The two ends of described plate-like body 1 are respectively arranged with input port 2 and output port 201, described input port 2 is on that side of the plate-like body 1 between first passage first resonant cavity 6 and second channel first resonant cavity 17, described output port 2 is on that side of the plate-like body 1 between last resonant cavity 8 of first passage and last resonant cavity 15 of second channel, and is all processed with transmission channel 18 between described input port 2 and two the first resonant cavitys and between output port 201 and two last those resonant cavitys.Described input port 2 inner end be all connected with horizontal type between two the first resonant cavitys and be coupled copper sheet 5, described two horizontal types coupling copper sheet 5 is all in the transmission channel 18 between input port 2 and two the first resonant cavitys.Described output port 201 inner end be all connected with horizontal type between two last resonant cavitys and be coupled copper sheet 5, this two horizontal type coupling copper sheet is all in the transmission channel 18 between output port 201 and two last resonant cavitys.
Wherein, all be processed with the first convex platform 12 in transmission channel 18 between input port 2 or output port 201 and two the first resonant cavitys or last resonant cavity, relative with described first resonant cavity or last resonant cavity and with input port 2 or adjacent that chamber wall of output port 201 fixed edge inside be all processed with the second convex platform 11.Two horizontal type coupling copper sheets 5 are L shape, their perpendicular section 501 end is all connected by the inner end of screw with input port 2 or output port 201, their kink is all connected on described first convex platform 12 by insulated screw 4 and insulation spacer, and their crosspiece 502 end to be stretched into respectively in corresponding first resonant cavity or is fixed on corresponding second convex platform 11 by insulated screw 4 in last resonant cavity.
In addition, be in that section of horizontal type coupling copper sheet 5 in two the first resonant cavitys or last resonant cavity, what it was adjacent with corresponding resonant column 9 is arc-shaped side 10.
The present invention adopts horizontal type coupling copper sheet 5, and the centre of this horizontal type coupling copper sheet 5 and two ends have adopt insulated screw 4 to be fixed at 3, even if be subject to external impacts in production, test, transport, use procedure, horizontal type coupling copper sheet 5 is not yielding yet, thus avoids the stability influence to the every electricity function index of filter.All adopt due to the horizontal type coupling two ends of copper sheet 5 and centre again and be screwed, even if be in the larger adverse circumstances of temperature difference span, also can not be different from the thermal coefficient of expansion of plate-like body 1 and have influence on the consistency of product, stability and quality because of the horizontal type copper sheet 5 that is coupled.
Claims (4)
1. a dielectric filter port coupled structure, comprise plate-like body (1) and cover plate (3), plate-like body (1) one side adjacent with cover plate (3) there are first passage resonant cavity and second channel resonant cavity, coupling window (16) is had between the resonant cavity of same passage, resonant column (9) is all had in described resonant cavity, the two ends of described plate-like body (1) have input port (2) and output port (201) respectively, described input port (2) and output port (201) are on that side of the plate-like body (1) between first passage first resonant cavity (6) and second channel first resonant cavity (17) or between last resonant cavity of first passage (8) and last resonant cavity of second channel (15) respectively, and all have transmission channel (18) between described input port (2) and two the first resonant cavitys and between output port (201) and two last those resonant cavitys, it is characterized in that described input port (2) or between output port (201) inner end with two the first resonant cavitys or between two last resonant cavitys, be all connected with horizontal type being coupled copper sheet (5).
2. a kind of dielectric filter port coupled structure according to claim 1, it is characterized in that all there is the first convex platform (12) in the transmission channel (18) between input port (2) or output port (201) and two the first resonant cavitys or last resonant cavity, relative with described first resonant cavity or last resonant cavity and with input port (2) or adjacent that chamber wall of output port (201) fixed edge inside all have the second convex platform (11); Described horizontal type coupling copper sheet (5) is L shape, their perpendicular section (501) end is all connected with input port (2) or output port (201), their kink is all connected with described first convex platform (12), and their crosspiece (502) end to be stretched into respectively in corresponding first resonant cavity or is fixed on corresponding second convex platform (11) in last resonant cavity.
3. a kind of dielectric filter port coupled structure according to claim 1, it is characterized in that described horizontal type coupling copper sheet (5) kink is all connected on described first convex platform (12) by insulated screw (4), their crosspiece (502) end is connected on corresponding second convex platform (11) by insulated screw (4) and insulation spacer respectively.
4. a kind of dielectric filter port coupled structure according to claim 1 or 2 or 3, it is characterized in that being in that section of horizontal type coupling copper sheet (5) in two the first resonant cavitys or last resonant cavity, what it was adjacent with corresponding resonant column (9) is arc-shaped side (10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410455876.5A CN104241751B (en) | 2014-09-10 | 2014-09-10 | A kind of dielectric filter port coupled structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410455876.5A CN104241751B (en) | 2014-09-10 | 2014-09-10 | A kind of dielectric filter port coupled structure |
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| CN104241751A true CN104241751A (en) | 2014-12-24 |
| CN104241751B CN104241751B (en) | 2017-07-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018107633A1 (en) * | 2016-12-14 | 2018-06-21 | 京信通信技术(广州)有限公司 | High-performance band-stop filter and communications cavity device thereof |
| CN110459848A (en) * | 2019-08-05 | 2019-11-15 | 苏州诺泰信通讯有限公司 | One kind can auxiliary adjustment input and output coupled structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201576732U (en) * | 2009-12-11 | 2010-09-08 | 深圳市华思科技有限公司 | TDA and TDB double-frequency combiner |
| CN102790250A (en) * | 2011-05-19 | 2012-11-21 | Ace技术株式会社 | Wide-band multi-mode filter |
| CN204216191U (en) * | 2014-09-10 | 2015-03-18 | 江苏贝孚德通讯科技股份有限公司 | A kind of dielectric filter port coupled structure |
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2014
- 2014-09-10 CN CN201410455876.5A patent/CN104241751B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201576732U (en) * | 2009-12-11 | 2010-09-08 | 深圳市华思科技有限公司 | TDA and TDB double-frequency combiner |
| CN102790250A (en) * | 2011-05-19 | 2012-11-21 | Ace技术株式会社 | Wide-band multi-mode filter |
| CN204216191U (en) * | 2014-09-10 | 2015-03-18 | 江苏贝孚德通讯科技股份有限公司 | A kind of dielectric filter port coupled structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018107633A1 (en) * | 2016-12-14 | 2018-06-21 | 京信通信技术(广州)有限公司 | High-performance band-stop filter and communications cavity device thereof |
| CN110459848A (en) * | 2019-08-05 | 2019-11-15 | 苏州诺泰信通讯有限公司 | One kind can auxiliary adjustment input and output coupled structure |
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| Publication number | Publication date |
|---|---|
| CN104241751B (en) | 2017-07-25 |
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