CN101521303B - Folded waveguide filter - Google Patents
Folded waveguide filter Download PDFInfo
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- CN101521303B CN101521303B CN 200910058882 CN200910058882A CN101521303B CN 101521303 B CN101521303 B CN 101521303B CN 200910058882 CN200910058882 CN 200910058882 CN 200910058882 A CN200910058882 A CN 200910058882A CN 101521303 B CN101521303 B CN 101521303B
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Abstract
The invention discloses a folded waveguide filter, which consists of a filter upper main body, a filter lower main body, a clapboard and a connection structure, wherein the filter upper main body is arranged above the filter lower main body, and the clapboard is arranged between the filter upper main body and the filter lower main body; and the connection structure is arranged at the same end of the filter upper main body and the filter lower main body to connect the filter upper main body and the filter lower main body into a whole so that a microwave signal passage is formed among the filterupper main body, the connection structure and the filter lower main body. The folded waveguide filter not only reduces the plane space occupied by a resonant cavity manifold and facilitates the integ ration of the waveguide filter and an external circuit, but also achieves the cross coupling between the filter upper main body and the filter lower main body so that the waveguide filter has better band external inhibition.
Description
Technical field
The present invention relates to a kind of waveguide filter, specifically, relate to a kind of folded waveguide filter.
Background technology
Present known waveguide filter; It all is the cavity coupling that on single plane, realizes; Be the waveguide filter of individual layer, all resonant cavity of this filter all at grade, when the resonant cavity number of filter more; When the cavity of single resonant cavity is big, will take bigger plane space.Therefore, the plane that this structure of the prior art has not only increased filter takes up room, and brings inconvenience also can for the integrated of Circuits System.
Summary of the invention
The purpose of this invention is to provide a kind of folded waveguide filter, not only reduce the plane space that filter takies at double, save the filter manufactured materials, increase design flexibility, also make the present invention have better band and suppress outward, convenient integrated with external circuit.
To achieve these goals, the technical scheme of the present invention's employing is following:
Folded waveguide filter; It is characterized in that; Said folded waveguide filter comprises main body, dividing plate and syndeton under main body on the filter, the filter, and main body is arranged at the top of main body under the filter on the said filter, and dividing plate is arranged on the filter under the main body and filter between the main body; Syndeton is the cavity that a side is opened wide fully, and is arranged on the filter the same end of main body under the main body and filter, and main body under main body on the filter and the filter is communicated with.
Main body is made up of upper cover plate, input/output structure and at least one resonant cavity on the said filter; Upper cover plate is all identical with the partition shape size; Resonant cavity is arranged between upper cover plate and the dividing plate; Be communicated with through coupling aperture between the adjacent resonators, and the resonant cavity adjacent with syndeton also be communicated with syndeton through coupling aperture, input/output structure is fixedly set on the resonant cavity.
Said upper cover plate is provided with tuning screw.
Be provided with the resonance post in the said resonant cavity, said resonance post is a metal column, and it is axially vertical with plane, dividing plate place, and the resonance post only links to each other with one of dividing plate with upper cover plate.
Said input/output structure is waveguide flange/coaxial fitting.
Said coaxial fitting comprises coaxial probe and coupling column, and coupling column one end is unsettled, and the other end is connected with dividing plate, upper cover plate, lower cover thrin, and the sidewall that coaxial probe passes resonant cavity links to each other with coupling column.
Said coaxial fitting comprises coaxial probe and coupling disc, coaxial probe pass resonant cavity sidewall and upper cover plate the two one of link to each other with coupling disc, and coupling disc only links to each other with coaxial probe.
Said dividing plate is provided with and is used to realize on the filter the cross-linked coupling aperture of main body under the main body and filter.
Main body is made up of lower cover, resonant cavity and input/output structure under the said filter, and resonant cavity is arranged between lower cover and the dividing plate, and input/output structure is arranged at an end relative with syndeton.
Also be provided with tuning screw on the said folded waveguide filter.
The present invention carries out improvedly on the basis of existing technology, and design principle is following:
At first with waveguide filter doubling of the prior art, a plurality of resonant cavitys are positioned at conplane filter construction change resonant cavity into and be the filter construction of two-layer distribution up and down, thereby reduce the shared plane space of waveguide filter.Two-layer resonant cavity up and down after the improvement is separated by dividing plate, can also between with the adjacent resonators of one deck, realize coupling with sheet metal simultaneously.
For two-layer resonant cavity about making can be realized coupling; At the same end of two-layer resonant cavity up and down a syndeton is set; This syndeton be one can coupled electromagnetic wave any structure, through syndeton, between main body on the filter and following main body, form the microwave signal path.
Among the present invention, some resonance posts can also be set in resonant cavity.The resonance post is a metal column, and an end is unsettled, the other end and dividing plate and cover plate the two one of vertical the connection.On the other hand, several coupling apertures can be set on dividing plate, the cross-couplings between the main body under main body and the filter improves band of the present invention and suppresses outward on the realization filter.
For making things convenient for being connected of waveguide filter and external circuit, at the resonant cavity other end relative an input/output structure is set with syndeton, this input/output structure mainly is made up of waveguide flange or coaxial conductor.When using waveguide flange, last main body and input of following main body, waveguide flange is separately used in another output respectively, and input and output flatly from the side also can be in upper cover plate and lower cover input and output vertically; And when using coaxial fitting, on the filter under main body and the filter main body respectively be provided with a coaxial fitting, coaxial fitting can be connected to form for coupling column and coaxial probe; At this moment; Coupling column one end links to each other with divider upright, and the other end is unsettled, and coaxial probe passes the resonant cavity sidewall and links to each other with coupling column; Simultaneously, coaxial fitting also can be connected to form for coupling disc and coaxial probe, and at this moment, coaxial probe passes the resonant cavity sidewall and links to each other with coupling disc, and coupling disc only links to each other with coaxial probe, and it is axial parallel with dividing plate.
Compared with prior art, the present invention has following characteristics:
One. dwindle the shared plane space of waveguide filter exponentially, thereby made the integrated convenient of waveguide filter and external circuit.
Two. because dividing plate two-in-one, thereby saved the manufactured materials of filter.
Three. dividing plate can increase coupling aperture, can realize the cross-couplings of filter top and the bottom, suppresses outward thereby provide than the better band of general filter.
The present invention can be widely used in the electronic system of each microwave band, particularly military affairs and civil areas such as radar, missile guidance, communication.
Description of drawings
Fig. 1 is the internal structure vertical view of a kind of structure of the present invention.
Fig. 2 is that the A-A of Fig. 1 is to structural representation.
Fig. 3 is the internal structure vertical view of another kind of structure of the present invention.
Fig. 4 is that the A-A of Fig. 3 is to structural representation.
Fig. 5 is the structural representation of main body on Fig. 4 median filter.
The corresponding title of label in the accompanying drawing: 1-upper cover plate, 2-resonant cavity, 3-dividing plate, 4-syndeton, 5-resonance post, 6-waveguide flange, 7-coaxial probe, 8-coupling column, 10-coupling aperture, 11-lower cover, 12-tuning screw.
Embodiment
Like Fig. 1, shown in Figure 2; Folded waveguide filter; Comprise main body under main body on the filter, the filter, dividing plate 3 and syndeton 4, on the said filter under main body and the filter main body be cuboid, dividing plate 3 is arranged on the filter under the main body and filter between the main body; Syndeton 4 is the rectangular cavities that one one side is opened wide fully, is arranged on the filter the same end of main body under the main body and filter, both are communicated with, thus between formation microwave signal path.
In the main body, several resonant cavitys 2 are arranged between upper cover plate 1 and the dividing plate 3 on filter, are separated by sheet metal between the adjacent resonators 2, and resonant cavity 2 inside can be provided with resonance post 5, also can not be provided with, and are connected by coupling aperture 10 between the adjacent resonators 2.When resonance post 5 was set, the number of each resonant cavity 2 internal resonance post 5 can change arbitrarily, an end of resonance post 5 and 3 vertical linking to each other of dividing plate, and the other end is unsettled.On upper cover plate 1, also be provided with several tuning screws 12, the front end of tuning screw 12 stretches into resonant cavity 2 inside.Dividing plate 3 is provided with coupling aperture 10, thereby realizes on the filter cross-couplings between the main body under the main body and filter, realizes the better outer inhibition of band of whole wave guide filter.And under the filter on agent structure and the filter main body similar; Both differences are that the resonance post number of resonant cavity 2 inside is different; Main body is made up of lower cover 11, several resonant cavitys 2 and input/output structure under the filter; Resonant cavity 2 is arranged between lower cover 11 and the dividing plate 3, and input/output structure is arranged on the resonant cavity 2 end relative with syndeton 4.Input/output structure is a waveguide flange 6; Waveguide flange 6 and syndeton 4 are arranged at the two ends of all resonant cavitys 2 respectively; Wherein, syndeton 4 be one can coupled electromagnetic wave cavity, the normal direction of waveguide flange 6 is vertical with the longer sides of waveguide filter.
Like Fig. 3, Fig. 4 and shown in Figure 5; Embodiment 2 is input/output structure with the difference of embodiment 1; Input/output structure is made up of coaxial probe 7 and coupling column 8 among the embodiment 2; Coupling column 8 one ends and 3 vertical linking to each other of dividing plate, the other end is unsettled, and the sidewall that coaxial probe 7 passes resonant cavity 2 links to each other with coupling column 8.
The present invention is through folding with waveguide filter of the prior art; Make the script resonant cavity be positioned at conplane structure and become the stereochemical structure that is provided with up and down for resonant cavity; Thereby practiced thrift the shared plane space of waveguide filter; Save the manufacturing materials of waveguide filter, be very easy to the integrated of waveguide filter and external circuit.
Claims (6)
1. folded waveguide filter; It is characterized in that; Said folded waveguide filter comprises main body under main body on the filter, the filter, dividing plate (3) and syndeton (4); Main body is arranged at the top of main body under the filter on the said filter, and dividing plate (3) is arranged on the filter under the main body and filter between the main body; Syndeton (4) is the cavity that a side is opened wide fully, and is arranged on the filter the same end of main body under the main body and filter, and main body under main body on the filter and the filter is communicated with; Main body is made up of upper cover plate (1), input/output structure and at least one resonant cavity (2) on the said filter; Upper cover plate (1) is all identical with dividing plate (3) shape size; Resonant cavity (2) is arranged between upper cover plate (1) and the dividing plate (3); Be communicated with through coupling aperture (10) between the adjacent resonators (2), and the resonant cavity (2) adjacent with syndeton also be communicated with syndeton (4) through coupling aperture (10), input/output structure is fixedly set on the resonant cavity (2); Be provided with resonance post (5) in the said resonant cavity (2), said resonance post (5) is a metal column, and it is axially vertical with plane, dividing plate (3) place, and resonance post (5) and upper cover plate (1) and dividing plate (3) both one of link to each other; Said dividing plate (3) is provided with and is used to realize on the filter the cross-linked coupling aperture of main body (10) under the main body and filter; Main body is made up of lower cover (11), resonant cavity (2) and input/output structure under the said filter, and resonant cavity (2) is arranged between lower cover (11) and the dividing plate (3), and input/output structure is arranged at an end relative with syndeton (4).
2. folded waveguide filter according to claim 1 is characterized in that, said upper cover plate (1) is provided with tuning screw.
3. folded waveguide filter according to claim 1 is characterized in that, said input/output structure is waveguide flange (6)/coaxial fitting.
4. folded waveguide filter according to claim 3; It is characterized in that; Said coaxial fitting comprises coaxial probe (7) and coupling column (8); Coupling column (8) one ends are unsettled, and the other end is connected with dividing plate (3), upper cover plate (1), lower cover (11) thrin, and the sidewall that coaxial probe (7) passes resonant cavity (2) links to each other with coupling column (8).
5. folded waveguide filter according to claim 3; It is characterized in that; Said coaxial fitting comprises coaxial probe (7) and coupling disc, coaxial probe (7) pass resonant cavity (2) sidewall and upper cover plate (1) the two one of link to each other with coupling disc, and coupling disc only links to each other with coaxial probe (7).
6. folded waveguide filter according to claim 1 is characterized in that, also is provided with tuning screw (12) on the said folded waveguide filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910058882 CN101521303B (en) | 2009-04-09 | 2009-04-09 | Folded waveguide filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910058882 CN101521303B (en) | 2009-04-09 | 2009-04-09 | Folded waveguide filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101521303A CN101521303A (en) | 2009-09-02 |
| CN101521303B true CN101521303B (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910058882 Active CN101521303B (en) | 2009-04-09 | 2009-04-09 | Folded waveguide filter |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306858B (en) * | 2011-06-23 | 2013-11-06 | 成都赛纳赛德科技有限公司 | Low pass filter with cross coupling |
| CN103035989B (en) * | 2012-12-14 | 2015-04-15 | 广东工业大学 | Cavity filter crosswise coupled by double-layer coaxial cavity |
| CN111430858B (en) * | 2019-12-08 | 2021-08-27 | 南京航空航天大学 | Duplex filter based on TE103 waveguide mode |
| CN112821021B (en) * | 2021-01-22 | 2022-05-17 | 华沣通信科技有限公司 | Sheet welding type small filter and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5243309A (en) * | 1992-06-04 | 1993-09-07 | Ghz Technologies Inc. | Temperature stable folded waveguide filter of reduced length |
| CN201167122Y (en) * | 2007-04-27 | 2008-12-17 | 成都赛纳赛德科技有限公司 | Compact coaxial short circuit extraneousness filter |
| CN201204242Y (en) * | 2008-06-03 | 2009-03-04 | 成都赛纳赛德科技有限公司 | Compact rectangular waveguide filter |
| CN201274310Y (en) * | 2008-08-28 | 2009-07-15 | 成都赛纳赛德科技有限公司 | Folded waveguide filter |
-
2009
- 2009-04-09 CN CN 200910058882 patent/CN101521303B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5243309A (en) * | 1992-06-04 | 1993-09-07 | Ghz Technologies Inc. | Temperature stable folded waveguide filter of reduced length |
| CN201167122Y (en) * | 2007-04-27 | 2008-12-17 | 成都赛纳赛德科技有限公司 | Compact coaxial short circuit extraneousness filter |
| CN201204242Y (en) * | 2008-06-03 | 2009-03-04 | 成都赛纳赛德科技有限公司 | Compact rectangular waveguide filter |
| CN201274310Y (en) * | 2008-08-28 | 2009-07-15 | 成都赛纳赛德科技有限公司 | Folded waveguide filter |
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| CN101521303A (en) | 2009-09-02 |
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Effective date of registration: 20201204 Address after: 215228, No. two, No. 1188, West Ring Road, Shengze Town, Wujiang District, Jiangsu, Suzhou Patentee after: Suzhou Shengze science and Technology Pioneer Park Development Co.,Ltd. Address before: 610041 A-54 box, 6 Yongfeng Road, hi tech Zone, Sichuan, Chengdu Patentee before: CHENGDU SINOSCITE TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20201222 Address after: 274600 Lizhuang Industrial Park, Hongchuan Town, juancheng County, Heze City, Shandong Province Patentee after: Juancheng Fengzhan Wood Industry Co.,Ltd. Address before: 215228 No. 1188 west two ring road, Shengze Town, Wujiang District, Suzhou, Jiangsu. Patentee before: Suzhou Shengze science and Technology Pioneer Park Development Co.,Ltd. |
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Effective date of registration: 20230828 Address after: 274000 West of Hongchuan Town Government, Juancheng County, Heze City, Shandong Province (North of Jidong Highway) Patentee after: Juancheng Xuyang Industrial Co.,Ltd. Address before: 274600 Lizhuang Industrial Park, Hongchuan Town, juancheng County, Heze City, Shandong Province Patentee before: Juancheng Fengzhan Wood Industry Co.,Ltd. |
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