CN202217753U - Coupling structure for dielectric filter - Google Patents
Coupling structure for dielectric filter Download PDFInfo
- Publication number
- CN202217753U CN202217753U CN 201120297236 CN201120297236U CN202217753U CN 202217753 U CN202217753 U CN 202217753U CN 201120297236 CN201120297236 CN 201120297236 CN 201120297236 U CN201120297236 U CN 201120297236U CN 202217753 U CN202217753 U CN 202217753U
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- cube
- coupling
- coupling block
- dielectric
- dielectric filter
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Abstract
The utility model discloses a coupling structure for a dielectric filter, comprising dielectric cubes and a coupling block; wherein edges of the dielectric cubes are provided with tangent planes; the dielectric cubes comprise a first cube and a second cube; the first cube and the second cube are respectively provided with input/output holes which are parallel with each other; included angles between the tangent planes and adjacent surfaces are 0 to 90 degrees; the coupling block is arranged between the first cube and the second cube; and a middle part of the coupling block is provided with a coupling hole which is parallel with the input/output holes. The coupling structure of the utility model has the beneficial effects that: the coupling structure of the utility model reduces current discontinuity of the coupling structure, has certain improvement to intermodulation characteristics, and reduces possibility of fracture of a silver baked layer, thereby making reliability of the filter higher; the two independent dielectric cubes can be processed individually, thereby reducing production cost; and the coupling structure of the utility model also reduces a structural stress generated by temperature change of a connecting part between the dielectric cube and the coupling block, thereby avoiding coupling block fracture caused by the temperature change.
Description
Technical field
The utility model relates to the electronic devices and components in the communications field, is specifically related to a kind of coupled structure of dielectric filter.
Background technology
The medium cube is usually used in the relatively strict occasion of filter volume requirement is compared with traditional wire chamber filter, and the medium cube can require its volume to be decreased to original 40% under the prerequisite that guarantees identical performance.Corner cut on the corner angle of traditional medium cube coupled structure adopts square corner cut, and this square corner cut exists current continuity bad, and the intermodulation characteristic is poor, and the roasting silver layer is the shortcoming of fracture easily.In addition, traditional medium cube filter, monolithic molding or the middle mode that increases wire chamber are taked in the coupling between cube and the cube more, and there is processed complex in integrally formed mode, and qualification rate is low, the shortcoming that production cost is high; Though the centre adds the effect that the mode of wire chamber has increase that parasitic passband is suppressed,, when variations in temperature, there is the risk of medium fracture because the coefficient of linear expansion and the cubical coefficient of linear expansion of medium of metal material differ greatly.
Summary of the invention
The purpose of the utility model is in order to overcome the deficiency of prior art, to provide a kind of being easier to produce, reliability height, the coupled structure of the dielectric filter that overall performance is good.
For realizing above-mentioned purpose; The coupled structure of a kind of dielectric filter of the utility model design; Comprise medium cube and coupling block, the cubical corner angle of described medium are provided with tangent plane, it is characterized in that: said medium cube comprises first cube and second cube; Be respectively equipped with the input and output hole that axial line overlaps on first cube and second cube; Said tangent plane and adjacently situated surfaces tilt, and said coupling block is between first cube and second cube, and the middle part of coupling block is provided with the coupling aperture that parallels with the input and output hole.
In technique scheme:
The angle of said tangent plane and adjacently situated surfaces is 45 °.
Said coupling aperture is a length-width ratio greater than 2 the rectangular opening or the bar hole of rounding.
Input and output bore dia on said first cube and second cube equates.
Said coupling block is the silver-colored ceramics of roasting, bakes silver-colored ceramics and be the identical ceramic material of coefficient of linear expansion of coefficient of linear expansion and medium cube material.
Adopt square corner cut to compare with traditional medium cube coupling structure of filter; After adopting the tangent plane structure; The rib of sudden change is reduced to 2 by original 3, and the angle of sudden change is decreased to 45 ° by original 90 °, and current continuity is bad; The intermodulation characteristic is poor, and the roasting silver layer shortcoming of fracture is easily greatly improved.The utility model overall structure is split type; Coupling between medium cube and the medium cube adopt opening bake silver-colored ceramics roasting silver bonding after, each cube is processed separately, reduced difficulty of processing; Improve machining accuracy and qualification rate, reduced production cost.In addition; Compare with opening sheet metal or the middle connected mode that adds wire chamber with direct; Owing to select for use the coefficient of linear expansion of ceramics identical with the coefficient of linear expansion of medium cube material; When variations in temperature, the deformational stress between ceramics and the medium cube is less, has avoided the medium cube fracture that causes because of deformational stress is excessive.
Description of drawings
Fig. 1 is the explosive view of the utility model embodiment;
Fig. 2 is the overall structure sketch map of the utility model embodiment;
Among the figure: 1, first cube, 2, second cube, 3, tangent plane, 4, the input and output hole, 5, coupling block, 6, coupling aperture.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to describe in detail:
As depicted in figs. 1 and 2, the coupled structure of dielectric filter is a split-type structural, and the medium cube comprises first cube 1 and second cube 2; Coupling block 5 is between first cube 1 and second cube 2; Be respectively equipped with the input and output hole 4 that is parallel to each other on first cube 1 and second cube 2, the cubical corner angle of medium are provided with tangent plane 3, and this tangent plane and adjacently situated surfaces tilt; Be that angle between tangent plane and the adjacently situated surfaces is greater than 0 ° and less than 90 ° angle; Be provided with the coupling aperture 6 that parallels with input and output hole 4 at the middle part of coupling block 5, coupling aperture 6 is a length-width ratio greater than 2 the rectangular opening or the bar hole of rounding, when dielectric filter direction as shown in Figure 1 is placed; Coupling aperture 6 is rectangular opening longitudinally, its longitudinally length much larger than the length of upper and lower side.Coupling block 5 is the silver-colored ceramics of roasting, bakes material that silver-colored ceramics adopts and be the identical ceramic material of coefficient of linear expansion of coefficient of linear expansion and medium cube material.
In the embodiment, tangent plane 3 is preferably 45 ° with the angle of adjacently situated surfaces, and the operation principle of 45 ° of corner cut coupled structures is with reference to the coupling principle between the multi-mode filter TM degenerate mode.45 ° of corner cuts are cut deeply more, and the coupling between the degenerate mode is big more, otherwise then more little.The perforate coupling principle that perforate bakes silver-colored ceramics is the magnetic field coupling principle between two TM patterns (nondegenerate), and the length of opening is long more, and it is big more to be coupled, otherwise then more little.After adopting 45 ° of corner cuts, the rib of sudden change is reduced to 2 (rib of square corner cut sudden change is 3), and the angle of sudden change is decreased to 45 ° by original 90 °, and current continuity improves, and the intermodulation characteristic improves, and the probability that bakes the silver layer fracture has in addition also reduced.Adopt the monolithic molding structure to compare with traditional medium cube filter; Cube and cube are made separately; Coupling between them adopt perforate bake silver-colored ceramics roasting silver bonding after, each cube is processed separately, reduced difficulty of processing; Improve machining accuracy and qualification rate, reduced production cost.In addition; Compare with opening sheet metal or the middle connected mode that adds wire chamber with direct; Owing to select for use the coefficient of linear expansion of ceramics identical with the coefficient of linear expansion of medium cube material; When variations in temperature, the deformational stress between ceramics and the medium cube is less, has avoided the medium cube fracture that causes because of deformational stress is excessive.
Claims (5)
1. the coupled structure of a dielectric filter; Comprise medium cube and coupling block, the cubical corner angle of described medium are provided with tangent plane, it is characterized in that: said medium cube comprises first cube and second cube; Be respectively equipped with the input and output hole that axial line overlaps on first cube and second cube; Said tangent plane and adjacently situated surfaces tilt, and said coupling block is between first cube and second cube, and the middle part of coupling block is provided with the coupling aperture that parallels with the input and output hole.
2. the coupled structure of dielectric filter according to claim 1, it is characterized in that: the angle of said tangent plane and adjacently situated surfaces is 45 °.
3. the coupled structure of dielectric filter according to claim 1 is characterized in that: said coupling aperture is a length-width ratio greater than 2 the rectangular opening or the bar hole of rounding.
4. the coupled structure of dielectric filter according to claim 1 is characterized in that: the input and output bore dia on said first cube and second cube equates.
5. according to the coupled structure of the arbitrary described dielectric filter of claim 1-4, it is characterized in that: said coupling block is the silver-colored ceramics of roasting, bakes silver-colored ceramics and be the identical ceramic material of coefficient of linear expansion of coefficient of linear expansion and medium cube material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120297236 CN202217753U (en) | 2011-08-16 | 2011-08-16 | Coupling structure for dielectric filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120297236 CN202217753U (en) | 2011-08-16 | 2011-08-16 | Coupling structure for dielectric filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202217753U true CN202217753U (en) | 2012-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201120297236 Expired - Fee Related CN202217753U (en) | 2011-08-16 | 2011-08-16 | Coupling structure for dielectric filter |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104733820A (en) * | 2015-03-30 | 2015-06-24 | 摩比天线技术（深圳）有限公司 | Ceramic dielectric multi-mode filter and assembly method thereof |
| WO2015090107A1 (en) * | 2013-12-16 | 2015-06-25 | 武汉凡谷电子技术股份有限公司 | Dielectric waveguide filter |
| CN104752794A (en) * | 2015-03-30 | 2015-07-01 | 摩比天线技术（深圳）有限公司 | Ceramic dielectric multi-mode filter and assembly method thereof |
| CN104995791A (en) * | 2013-02-21 | 2015-10-21 | 梅萨普莱克斯私人有限公司 | Controlling coupling in a filter by aperture design |
| CN105633518A (en) * | 2016-01-04 | 2016-06-01 | 张家港保税区灿勤科技有限公司 | Filter for transceiver and base station |
| CN108963398A (en) * | 2018-02-12 | 2018-12-07 | 香港凡谷發展有限公司 | A kind of three mould dielectric resonance cavity configurations applied in filter |
| CN109244606A (en) * | 2018-09-12 | 2019-01-18 | 湖北立创新材料有限公司 | A kind of dielectric filter |
-
2011
- 2011-08-16 CN CN 201120297236 patent/CN202217753U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104995791A (en) * | 2013-02-21 | 2015-10-21 | 梅萨普莱克斯私人有限公司 | Controlling coupling in a filter by aperture design |
| WO2015090107A1 (en) * | 2013-12-16 | 2015-06-25 | 武汉凡谷电子技术股份有限公司 | Dielectric waveguide filter |
| CN104733820A (en) * | 2015-03-30 | 2015-06-24 | 摩比天线技术（深圳）有限公司 | Ceramic dielectric multi-mode filter and assembly method thereof |
| CN104752794A (en) * | 2015-03-30 | 2015-07-01 | 摩比天线技术（深圳）有限公司 | Ceramic dielectric multi-mode filter and assembly method thereof |
| CN105633518A (en) * | 2016-01-04 | 2016-06-01 | 张家港保税区灿勤科技有限公司 | Filter for transceiver and base station |
| CN108963398A (en) * | 2018-02-12 | 2018-12-07 | 香港凡谷發展有限公司 | A kind of three mould dielectric resonance cavity configurations applied in filter |
| CN108963398B (en) * | 2018-02-12 | 2021-01-26 | 香港凡谷發展有限公司 | Three-mode dielectric resonant cavity structure applied to filter |
| CN109244606A (en) * | 2018-09-12 | 2019-01-18 | 湖北立创新材料有限公司 | A kind of dielectric filter |
| CN109244606B (en) * | 2018-09-12 | 2024-02-06 | 江西一创新材料有限公司 | Dielectric filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHAN FAN'GU CERAMIC MATERIALS CO., LTD. Free format text: FORMER OWNER: WUHAN FANGU ELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20140929 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430205 WUHAN, HUBEI PROVINCE TO: 430200 WUHAN, HUBEI PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140929 Address after: 430200, No. two, East Industrial Park, East Lake Development Zone, Hubei, Wuhan Patentee after: WUHAN FINGU CERAMIC MATERIAL CO., LTD. Address before: 430205 Hubei Province, Wuhan city Jiangxia District Guan Feng Lu canglongdao fingu Industrial Park, building 4, floor 2 Patentee before: Wuhan Fingu Electronic Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20200816 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |