CN104201448A - Inductive coupling structure of dielectric filter - Google Patents
Inductive coupling structure of dielectric filter Download PDFInfo
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- CN104201448A CN104201448A CN201410455428.5A CN201410455428A CN104201448A CN 104201448 A CN104201448 A CN 104201448A CN 201410455428 A CN201410455428 A CN 201410455428A CN 104201448 A CN104201448 A CN 104201448A
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Abstract
The invention relates to an inductive coupling structure of a dielectric filter. The inductive coupling structure comprises a plate-shaped body and a cover plate. A flat-bottom hole is formed in one surface of the plate-shaped body, and three resonance columns are arranged in the flat-bottom hole. Partition walls are arranged among the three resonance columns, first coupling ports are arranged between two vertical edges of the partition walls and hole walls respectively, and inductive coupling ports are arranged between the two resonance columns located on the same sides of the partition walls respectively. Threaded holes and coupling tuning screws are arranged on the cover plate corresponding to the first coupling ports and the inductive coupling ports; screw holes and coupling tuning screws are arranged on the cover plate at positions corresponding to the three resonance columns; tuning disks are arranged at the inner ends of the two frequency coupling tuning screws. The inductive coupling structure is characterized in that U-shaped inductive coupling pieces are arranged in the inductive coupling ports, two ends of the inductive coupling pieces are fixed on the outer sides of the partition walls, and the centers of the inductive coupling pieces are fixed on the inner sides of the hole walls opposite to the centers of the inductive coupling ports. Stand columns are fixed on the upper sides of the centers of the inductive coupling pieces. The inductive coupling structure is good in consistency and stability, high in production efficiency, low in production cost and applicable to wireless communication bases.
Description
Technical field
The present invention relates to a kind of electronic device.Specifically, be for the inductive coupled structure of clutter beyond rejects trap passband or signal, be particularly useful in radio communication base station.
Background technology
In radio communication base station, being used for the inductive coupled structure of clutter beyond rejects trap passband or signal is all traditional inductive coupled structure.The perceptual coupled structure of this tradition comprises plate-like body, and the one side of plate-like body has flat hole and cover plate, between cover plate and plate-like body, is fixed together.On at the bottom of the hole in flat hole, there are three resonant columns, between these three resonant columns, are equilateral triangle and arrange.Between three resonant columns, have partition wall, described partition wall two vertical edges are cheated between wall and are all had the spacing as the first coupling aperture with relative flat hole, between two resonant columns in partition wall homonymy, have perceptual coupling aperture.With the first coupling aperture and and inductive coupled mouthful corresponding cover plate on have screw and tuning screw, described tuning screw all stretch in flat hole and and corresponding resonant column upper end between leave spacing, the tuning screw inner end corresponding with two resonant columns in partition wall outside is connected with tuning dish.Coupled modes are wherein on the cover board to weld copper wire to realize, although adopt and can realize in this way inductive coupledly, because needing use instrument in manufacturing process, copper wire carries out bending, after bending, can cause damage to copper wire, a little less than adding that the intensity of copper wire own is relatively, therefore poor stability.Meanwhile, owing to adopting copper wire to make by hand, make consistency poor.And copper wire welds rear its height and length is just definite, if will regulate coupling performance, just necessary replacing copper wire.So, not only can increase production cost, also can reduce production efficiency.
Summary of the invention
The problem to be solved in the present invention is to provide the inductive coupled structure of a kind of dielectric filter.Adopt this inductive coupled structure, do not need to change coupling piece, can realize coupling performance and regulate, consistency, good stability, production efficiency is high, and production cost is low.
The problems referred to above that the present invention will solve are by realizing with technical scheme:
The inductive coupled structure of dielectric filter of the present invention comprises plate-like body, and the one side of plate-like body has flat hole and cover plate, between cover plate and plate-like body, is fixed together; On at the bottom of the hole in flat hole, there are three resonant columns, between these three resonant columns, are equilateral triangle and arrange.Between three resonant columns, have partition wall, described partition wall two vertical edges are cheated between wall and are all had the spacing as the first coupling aperture with relative flat hole, between two resonant columns in partition wall homonymy, have perceptual coupling aperture.On the cover plate corresponding with the first coupling aperture and inductive coupled mouthful, have screw and coupling tuning screw, all have screw and frequency tuning screw with three the corresponding cover plate of resonant column corresponding positions, all there is tuning dish two frequency tuning screw inner ends.
Be characterized in there is convex platform with at described the inductive coupled mouthful relative one side end, hole of partition wall, the height of convex platform is lower than the upper surface of plate-like body, in described inductive coupled mouthful, there is inductance coupling high sheet, described inductance coupling high sheet is approximate U-shaped, inductance coupling high sheet two ends are insulation shape and are fixed on described convex platform, and inductance coupling high Pian center is fixed on and the inductive coupled mouthful of wall inner side, hole that center is relative.Above the centre of inductance coupling high sheet, be fixed with column.
Described column is metal column, the upper surface of described convex platform is subtriangular, described inductance coupling high sheet two ends are fixed on two angles of the contiguous partition wall of described convex platform by plastic screw respectively, and column lower end is fixed in the middle of the upper surface of inductance coupling high sheet by plastic screw.
Described inductance coupling high sheet adopts sheet copper to process.
Take such scheme, have the following advantages:
As can be seen from the above scheme, in described inductive coupled mouthful, there is column,, there is convex platform at the one side end, hole of partition wall relative with described column, the height of convex platform is lower than the upper surface of plate-like body, between described column and convex platform, there is inductance coupling high sheet, described inductance coupling high sheet is approximate U-shaped, and inductance coupling high sheet two ends are insulation shape and are fixed on described convex platform, and inductance coupling high Pian center is fixed on the described column lower end of contiguous hole wall.Adopt the inductance coupling high sheet of approximate U-shaped to realize coupling, compared with adopting the coupled modes of on the cover board welding copper wire in background technology, inductance coupling high sheet shape in manufacturing process is just definite, do not need use instrument to carry out bending, therefore in installation process, can not cause damage, therefore stability is better.Meanwhile, because inductance coupling high sheet does not need to make by hand, make consistency better.Because shape and the coupling performance degree of inductance coupling high sheet before installation are just definite, often need change the trouble of copper wire thereby avoided adopting being coupled simultaneously again.So, not only can reduce production cost, also improve production efficiency.
Brief description of the drawings
Fig. 1 is the inductive coupled structural representation of dielectric filter 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;
Fig. 5 is the E-E cross-sectional schematic of Fig. 1.
Embodiment
As shown in Fig. 1 ~ Fig. 5, the inductive coupled structure of dielectric filter of the present invention comprises plate-like body 4, and the one side of plate-like body 4 is processed with flat hole, and plate-like body 1 one side in contiguous flat hole is provided with cover plate 2.Between cover plate 2 and plate-like body 4, be fixed together.On at the bottom of the hole in flat hole, be provided with three resonant columns 5, between these three resonant columns, be equilateral triangle and arrange.Three 5 of resonant columns are provided with and cheat the partition wall 3 that the end forms as one, described partition wall 3 be projected as approximate arc, two vertical edges of partition wall 3 are cheated between wall and are all left the spacing as the first coupling aperture 7 with relative flat hole, leave the spacing as inductive coupled mouthful 13 in 5 of two resonant columns of partition wall 3 homonymies.On cover plate 2 relevant positions corresponding with the first coupling aperture 7 and inductive coupled mouth 13, be processed with screw, in screw, be all furnished with coupling tuning screw 6.All be processed with screw with three resonant columns, 5 corresponding cover plate 2 corresponding positions, be all furnished with frequency tuning screw 8 in these screws, described frequency tuning screw 8 inner ends have all been connected with tuning dish 9.There are two inputs, output port in plate-like body 4 outsides adjacent with two resonant columns 5 of partition wall 3 homonymies, and the inner end of this input, output port is stretched into respectively two resonant columns 5 of partition wall 3 homonymies and cheated in the flat hole between wall.
, be processed with convex platform 10, the height of convex platform 10 is lower than the upper surface of plate-like body 4 at the 3 one sides end, hole of partition wall relative with inductive coupled mouth 13.In described inductive coupled mouthful 13, be provided with inductance coupling high sheet 12, inductance coupling high sheet 12 is wherein to process with sheet copper.Described inductance coupling high sheet 12 is approximate U-shaped, and inductance coupling high sheet 12 two ends are insulation shape by plastic screw 1 respectively and are fixed on described convex platform 10, and inductance coupling high Pian12 center is fixed on the hole wall inner side relative with inductive coupled Kou13 center.Above the centre of inductance coupling high sheet 12, be provided with column 11, described column 11 is metal column, and it is open tubular column, and its lower end is fixed in the middle of the upper surface of inductance coupling high sheet 12 by plastic screw 1.Described column 11 has is convenient to tuning height, can play the effect of resonant column 5, in the cover plate corresponding with it 2 corresponding positions, tuning screw is set, can the flexible degree of coupling.
Wherein, the upper surface of described convex platform 10 is subtriangular, described inductance coupling high sheet 12 two ends are fixed on two angles of described convex platform 10 contiguous partition walls 3 by plastic screw 1 respectively, in the middle of the upper surface of inductance coupling high sheet 12, are fixed on the hole wall inside bottom relative with inductive coupled Kou13 center by plastic screw 1.
The present invention adopts the inductance coupling high sheet 12 of approximate U-shaped to realize coupling, and inductance coupling high sheet 12 shape in manufacturing process is just definite, does not need use instrument to carry out bending, therefore in installation process, can not cause damage, makes its stability better.Meanwhile, because inductance coupling high sheet 12 does not need to make by hand, make consistency better.Because shape and the coupling performance of inductance coupling high sheet 12 before installation are just definite, do not need frequent replacing, can reduce production costs, enhance productivity.
Claims (3)
1. the inductive coupled structure of dielectric filter, comprises plate-like body (4), and the one side of plate-like body (4) has flat hole and cover plate (2), between cover plate (2) and plate-like body (4), is fixed together; On at the bottom of the hole in flat hole, there are three resonant columns (5), between these three resonant columns, are equilateral triangle and arrange; Between three resonant columns (5), have partition wall (3), described partition wall (3) two vertical edges are cheated between wall and are all had the spacing as the first coupling aperture (7) with relative flat hole, between two resonant columns (5) in partition wall (3) homonymy, have perceptual coupling aperture (13); On the cover plate (2) corresponding with the first coupling aperture (7) and inductive coupled mouthful (13), there are screw and coupling tuning screw (6), all have screw and frequency tuning screw (8) with the corresponding cover plate (2) of three resonant columns (5) corresponding position, all there is tuning dish (9) two frequency tuning screw (8) inner ends;
It is characterized in that there is convex platform (10) at the (3) one side end, hole of the partition wall relative with described inductive coupled mouthful (13), the height of convex platform (10) is lower than the upper surface of plate-like body (4), in described inductive coupled mouthful (13), there is inductance coupling high sheet (12), described inductance coupling high sheet (12) is approximate U-shaped, inductance coupling high sheet (12) two ends are insulation shape and are fixed on described convex platform (10) above, and the center of inductance coupling high sheet (12) is fixed on and the inductive coupled mouthful of wall inner side, hole that (13) center is relative; Above the centre of inductance coupling high sheet (12), be fixed with column (11).
2. the inductive coupled structure of a kind of dielectric filter according to claim 1, it is characterized in that described column (11) is metal column, the upper surface of described convex platform (10) is subtriangular, described inductance coupling high sheet (12) two ends are fixed on two angles of the contiguous partition wall of described convex platform (10) (3) by plastic screw (1) respectively, and column (11) lower end is fixed in the middle of the upper surface of inductance coupling high sheet (12) by plastic screw (1).
3. the inductive coupled structure of a kind of dielectric filter according to claim 1 and 2, is characterized in that inductance coupling high sheet (12) adopts sheet copper to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410455428.5A CN104201448A (en) | 2014-09-10 | 2014-09-10 | Inductive coupling structure of dielectric filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410455428.5A CN104201448A (en) | 2014-09-10 | 2014-09-10 | Inductive coupling structure of dielectric filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767018A (en) * | 2015-03-10 | 2015-07-08 | 江苏贝孚德通讯科技股份有限公司 | Filter with adjustable capacitive transmission zeros |
| 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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| CN1294421A (en) * | 1999-11-02 | 2001-05-09 | 株式会社村田制作所 | Medium electric filter, compound medium electric filter, one-two-way duplexer and communication device |
| WO2001084662A1 (en) * | 2000-05-03 | 2001-11-08 | Allen Telecom Inc. | Coupling mechanisms for dielectric resonator loaded cavity filters |
| CN1901272A (en) * | 2006-07-27 | 2007-01-24 | 奥雷通光通讯设备（上海）有限公司 | Capacitive coupling device between medium loading chambers |
| CN200997430Y (en) * | 2006-12-31 | 2007-12-26 | 摩比天线技术（深圳）有限公司 | Sensitive coupling structure between coaxial cavity resonater and filter therewith |
| CN101694900A (en) * | 2009-11-10 | 2010-04-14 | 西安空间无线电技术研究所 | Coupling mechanism for cavity medium filter |
| US20100090785A1 (en) * | 2008-10-15 | 2010-04-15 | Antonio Panariello | Dielectric resonator and filter with low permittivity material |
| CN102324602A (en) * | 2011-09-01 | 2012-01-18 | 武汉虹信通信技术有限责任公司 | Inductance coupling device for TE01delta mode dielectric resonator |
| CN102751554A (en) * | 2012-06-29 | 2012-10-24 | 摩比天线技术（深圳）有限公司 | Mixed-mode filter |
| CN202855879U (en) * | 2012-09-18 | 2013-04-03 | 武汉凡谷电子技术股份有限公司 | Adjustable electric coupling structure between TEM die metal chamber and TM die medium chamber in filter |
| CN204156063U (en) * | 2014-09-10 | 2015-02-11 | 江苏贝孚德通讯科技股份有限公司 | The inductive coupled structure of a kind of dielectric filter |
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2014
- 2014-09-10 CN CN201410455428.5A patent/CN104201448A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294421A (en) * | 1999-11-02 | 2001-05-09 | 株式会社村田制作所 | Medium electric filter, compound medium electric filter, one-two-way duplexer and communication device |
| WO2001084662A1 (en) * | 2000-05-03 | 2001-11-08 | Allen Telecom Inc. | Coupling mechanisms for dielectric resonator loaded cavity filters |
| CN1901272A (en) * | 2006-07-27 | 2007-01-24 | 奥雷通光通讯设备（上海）有限公司 | Capacitive coupling device between medium loading chambers |
| CN200997430Y (en) * | 2006-12-31 | 2007-12-26 | 摩比天线技术（深圳）有限公司 | Sensitive coupling structure between coaxial cavity resonater and filter therewith |
| US20100090785A1 (en) * | 2008-10-15 | 2010-04-15 | Antonio Panariello | Dielectric resonator and filter with low permittivity material |
| CN101694900A (en) * | 2009-11-10 | 2010-04-14 | 西安空间无线电技术研究所 | Coupling mechanism for cavity medium filter |
| CN102324602A (en) * | 2011-09-01 | 2012-01-18 | 武汉虹信通信技术有限责任公司 | Inductance coupling device for TE01delta mode dielectric resonator |
| CN102751554A (en) * | 2012-06-29 | 2012-10-24 | 摩比天线技术（深圳）有限公司 | Mixed-mode filter |
| CN202855879U (en) * | 2012-09-18 | 2013-04-03 | 武汉凡谷电子技术股份有限公司 | Adjustable electric coupling structure between TEM die metal chamber and TM die medium chamber in filter |
| CN204156063U (en) * | 2014-09-10 | 2015-02-11 | 江苏贝孚德通讯科技股份有限公司 | The inductive coupled structure of a kind of dielectric filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767018A (en) * | 2015-03-10 | 2015-07-08 | 江苏贝孚德通讯科技股份有限公司 | Filter with adjustable capacitive transmission zeros |
| 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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