CN102496758B - The bimodulus cavity filter of circular corner cut - Google Patents
The bimodulus cavity filter of circular corner cut Download PDFInfo
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- CN102496758B CN102496758B CN201110426551.0A CN201110426551A CN102496758B CN 102496758 B CN102496758 B CN 102496758B CN 201110426551 A CN201110426551 A CN 201110426551A CN 102496758 B CN102496758 B CN 102496758B
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- corner cut
- cavity
- circular corner
- bimodulus
- filter
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Abstract
The present invention discloses a kind of bimodulus cavity filter of circular corner cut, comprises adjacent rectangular cavity body, and described resonant cavity two bottom sides has asymmetric circular corner cut respectively.The bimodulus cavity filter of circular corner cut of the present invention, with the Two-mode Coupling structure of the circular corner cut of distributing or build-up type, replaces distributing or the build-up type coupled structure of adjusting screw or square corner cut.By the strip coupling window between adjacent, size that is adjacent or cross-coupling can be adjusted, can realize adjusting the position of transmission zero to promote the isolation of filter; Corresponding input output window and coupling window all can be concordant with cavity upper surface, are conducive to machining and debugging, have electric sensitivity low, and debugging easily, is easy to the feature of producing.
Description
Technical field
The present invention relates to a kind of filter, especially a kind of bimodulus cavity filter with circular corner cut.
Background technology
Along with in recent decades, radio communication, satellite communication is to the growth of available frequency band demand, the design of people's radio frequency and microwave filter is had higher requirement, another due to satellite communication, the volume and weight of weaponry to filter it is also proposed harsh requirement, it is high that dual mode filter has Q value, passband and stopband decline precipitous, miniaturized, the advantages such as insertion loss is low, obtain increasing application, but it also exists complex structure simultaneously, debugging defect not easily, therefore mass production is very difficult, make cannot be applied to commercial wireless communication system always.
The great majority that traditional dual-mode waveguide filter utilizes are columniform resonant cavitys, the difficulty of accurate processing is higher, and in order to Mode Coupling and the tuning needs of working band thereof, usually need many tuning screws and coupling screws, the Q value of cavity is declined and the difficulty of the processing strengthened further.
Therefore be necessary to improve from structure, in the hope of solving a difficult problem for the mass production of this type of filter.
Summary of the invention
Object of the present invention, is the dual mode filter providing a kind of innovation structure, is beneficial to the mass production of this type of filter.
The object of the invention is to be achieved through the following technical solutions:
A bimodulus cavity filter for circular corner cut, comprises adjacent rectangular cavity body, and described resonant cavity two bottom sides has asymmetric circular corner cut respectively.
Further, the coupling window of strip is provided with between described resonant cavity.
Further, the two ends of described bimodulus cavity filter are provided with the input output window of strip.
Preferably, described coupling window upper surface is concordant with described resonant cavity upper surface.
Preferably, described input output window upper surface is concordant with described resonant cavity upper surface.
The bimodulus cavity filter of circular corner cut of the present invention, with the Two-mode Coupling structure of the circular corner cut of distributing or build-up type, replaces distributing or the build-up type coupled structure of adjusting screw or square corner cut.By the strip coupling window between adjacent, size that is adjacent or cross-coupling can be adjusted, can realize adjusting the position of transmission zero to promote the isolation of filter; Corresponding input output window and coupling window all can be concordant with cavity upper surface, are conducive to machining and debugging, have electric sensitivity low, and debugging easily, is easy to the feature of producing.
Accompanying drawing explanation
According to drawings and embodiments the present invention is described in further detail below.
Fig. 1 is the perspective view of a quadravalence microwave filter.
1,2, resonant cavity in figure:; 3, small circular corner cut; 4, large circular corner cut; 5, coupling window; 6, input window; 7, output window.
Embodiment
As shown in Figure 1, give the perspective view of a quadravalence microwave filter with circular corner cut, As is made up of it rectangular cavity body 1 and rectangular cavity body 2, cross section is in square, and resonant cavity 1 has small circular corner cut 3 in bottom, and resonant cavity 2 has large circular corner cut 4 in bottom, two corner cuts are mal-distribution, little corner cut is beneficial to processing, and large corner cut manufactures the asymmetry of cavity cross section, thus can produce the Two-mode Coupling of q.s.Need the different relative positions circular corner cut being configured in different cavity to produce the cross-coupling of out of phase with suitable configuration transmission zero in the coupled structure of the circular corner cut of relative set.
Coupling window 5 is provided with between resonant cavity 1 resonant cavity body 2, it can depart from vertical center, and from the bottom surface or capping of cavity, the present embodiment adopts from capping, make coupling window 5 upper surface concordant with the upper surface of resonant cavity 1,2, be conducive to machining and debugging.Adjacent coupled realizes with the length of the coupling window 5 between two cavitys, and cross-coupling then realizes with its width.
Input window 6 and the output window 7 of strip is provided with at the two ends of bimodulus cavity filter, it also can depart from vertical center, from the bottom surface or capping of cavity, the present embodiment adopts from capping, make input window 6 concordant with the upper surface of resonant cavity 1,2 with output window 7 upper surface, be conducive to machining and debugging.
Above-mentioned explanation is illustrating for the feasible embodiment of the present invention; and this embodiment be not used to limit the scope of the claims of the present invention; all equivalences do not departed from done by the technology of the present invention spirit are implemented or change, such as, adopt the execution mode of different microprocessor chip for master controller all should be contained in the claimed the scope of the claims of the application.
Claims (3)
1. a bimodulus cavity filter for circular corner cut, comprises adjacent rectangular cavity body, is provided with the coupling window of strip between described resonant cavity; The two ends of described bimodulus cavity filter are provided with the input output window of strip, it is characterized in that: the different relative position bottom described adjacent rectangular cavity body arrange a circular corner cut respectively, and two described circular corner cuts are mal-distribution.
2. bimodulus cavity filter according to claim 1, is characterized in that: described coupling window upper surface is concordant with described resonant cavity upper surface.
3. bimodulus cavity filter according to claim 1, is characterized in that: described input output window upper surface is concordant with described resonant cavity upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110426551.0A CN102496758B (en) | 2011-12-19 | 2011-12-19 | The bimodulus cavity filter of circular corner cut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110426551.0A CN102496758B (en) | 2011-12-19 | 2011-12-19 | The bimodulus cavity filter of circular corner cut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102496758A CN102496758A (en) | 2012-06-13 |
| CN102496758B true CN102496758B (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110426551.0A Expired - Fee Related CN102496758B (en) | 2011-12-19 | 2011-12-19 | The bimodulus cavity filter of circular corner cut |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0878903A (en) * | 1994-09-09 | 1996-03-22 | Ube Ind Ltd | Dual mode dielectric waveguide type filter and characteristic adjusting method for the same |
| CN102185170A (en) * | 2011-02-28 | 2011-09-14 | 西安空间无线电技术研究所 | High-power corner cut filter with square cavity |
| CN202395128U (en) * | 2011-12-19 | 2012-08-22 | 江苏贝孚德通讯科技股份有限公司 | Dual-mode cavity filter with circular chamfers |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1281564A (en) * | 1969-03-03 | 1972-07-12 | Marconi Co Ltd | Improvements in or relating to waveguide filters |
| US7042314B2 (en) * | 2001-11-14 | 2006-05-09 | Radio Frequency Systems | Dielectric mono-block triple-mode microwave delay filter |
| CN102222812B (en) * | 2011-03-04 | 2013-07-24 | 西安空间无线电技术研究所 | Round-chamber dual-mode side-wall coupling filter capable of inhibiting parasitic coupling |
-
2011
- 2011-12-19 CN CN201110426551.0A patent/CN102496758B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0878903A (en) * | 1994-09-09 | 1996-03-22 | Ube Ind Ltd | Dual mode dielectric waveguide type filter and characteristic adjusting method for the same |
| CN102185170A (en) * | 2011-02-28 | 2011-09-14 | 西安空间无线电技术研究所 | High-power corner cut filter with square cavity |
| CN202395128U (en) * | 2011-12-19 | 2012-08-22 | 江苏贝孚德通讯科技股份有限公司 | Dual-mode cavity filter with circular chamfers |
Non-Patent Citations (1)
| Title |
|---|
| 波导双模滤波器设计;王春艳;《中国优秀硕士学位论文》;20091115;第64页第5.2.1节，图5-6 * |
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| CN102496758A (en) | 2012-06-13 |
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