CN102496758A - Circular-chamfer double-module cavity filter - Google Patents
Circular-chamfer double-module cavity filter Download PDFInfo
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- CN102496758A CN102496758A CN2011104265510A CN201110426551A CN102496758A CN 102496758 A CN102496758 A CN 102496758A CN 2011104265510 A CN2011104265510 A CN 2011104265510A CN 201110426551 A CN201110426551 A CN 201110426551A CN 102496758 A CN102496758 A CN 102496758A
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- chamfer
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- double
- cavity filter
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Abstract
The invention discloses a circular-chamfer double-module cavity filter. The circular-chamfer double-module cavity filter comprises an adjacent rectangular resonance cavity, wherein asymmetrical circular chamfers are arranged on two sides of the bottom of the resonance cavity. The circular-chamfer double-module cavity filter uses a distributed or collective circular-chamfer double-module coupling structure to replace a distributed or collective circular-chamfer coupling structure with regulating bolts or rectangular chambers; through adjacent long strip-shaped coupling windows, the size of the adjacent coupling or the non-adjacent coupling can be regulated and the position of a transmission zero can be regulated to increase the isolation of the filter; the corresponding input and output window and the coupling windows are in flush with the upper surface of the cavity, so that the mechanical processing and debugging can be facilitated; and the circular-chamfer double-module cavity filter has the characteristics of low electrical sensitivity, easy debugging and easy production.
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 are to the available frequency band growth of requirement, and people have higher requirement to the design of radio frequency and microwave filter; Individual in addition owing to satellite communication, weaponry have also proposed harsh requirement to the volume and weight of filter; It is high that dual mode filter has the Q value, and passband and stopband descend precipitous, miniaturization, inserts advantages such as loss is low; Obtained increasing application; But it exists complex structure, the difficult defective of debugging simultaneously, so mass production is very difficult, makes can't be applied to the commercial wireless communication system always.
The great majority of traditional dual-mode waveguide filter utilization are columniform resonant cavitys; Accurately the difficulty of processing is higher; And for Mode Coupling and the tuning needs of working band thereof; Usually need many tuning screws and coupling screw, make the Q value of cavity descend and the further difficulty of the processing of increasing.
Therefore be necessary to improve, in the hope of the difficult problem of the mass production that solves this type of filter from structure.
Summary of the invention
The object of the invention is to provide a kind of dual mode filter of innovation structure, is beneficial to the mass production of this type of filter.
The objective of the invention is to realize through following technical scheme:
A kind of bimodulus cavity filter of circular corner cut comprises adjacent rectangular cavity body, and said resonant cavity two bottom sides has asymmetric circular corner cut respectively.
Further, be provided with the coupling window of strip between the said resonant cavity.
Further, the two ends of said bimodulus cavity filter are provided with the input output window of strip.
Preferably, said coupling window upper surface is concordant with said resonant cavity upper surface.
Preferably, said input output window upper surface is concordant with said resonant cavity upper surface.
The bimodulus cavity filter of circular corner cut of the present invention with distributing or assemble the bimodulus coupled structure of the circular corner cut of formula, replaces with the distributing of adjusting screw or square corner cut or assembles the formula coupled structure.Through the strip coupling window between adjacent, can adjust the size of adjacent or non-adjacent coupled, the position that can realize adjusting transmission zero is to promote the isolation of filter; Corresponding input output window all can be concordant with the cavity upper surface with coupling window, helps machining and debugging, and it is low to have electric sensitivity, and debugging is easy, the characteristics that are easy to produce.
Description of drawings
According to accompanying drawing and embodiment the present invention is done further explain below.
Fig. 1 is the perspective view of a quadravalence microwave filter.
1,2, resonant cavity among the figure:; 3, small circular corner cut; 4, big circular corner cut; 5, coupling window; 6, input window; 7, output window.
Embodiment
As shown in Figure 1; Provided the perspective view of a quadravalence microwave filter with circular corner cut; For it is made up of rectangular cavity body 1 and rectangular cavity body 2; Cross section is square, and resonant cavity 1 has small circular corner cut 3 in the bottom, and resonant cavity 2 has big circular corner cut 4 in the bottom; Two corner cuts are asymmetric distribution; Little corner cut is beneficial to processing, and big corner cut is made the asymmetry of cavity cross section, thereby can produce the bimodulus coupling of q.s.Coupled structure in the circular corner cut of relative set is, the different relative positions that need circular corner cut be configured in different cavitys with the non-adjacent coupled that produces out of phase with the appropriate configurations transmission zero.
Be provided with coupling window 5 between the resonant cavity 1 resonant cavity 2; It can depart from vertical center, begins from the bottom surface or the capping of cavity, and present embodiment adopts and begins from capping; Make coupling window 5 upper surfaces concordant, help machining and debugging with the upper surface of resonant cavity 1,2.Adjacent coupled realizes that with the length of the coupling window 5 between two cavitys non-adjacent coupled then realizes with its width.
Be provided with the input window 6 and output window 7 of strip at the two ends of bimodulus cavity filter; It also can depart from vertical center; Begin from the bottom surface or the capping of cavity; Present embodiment adopts and begins from capping, makes input window 6 concordant with the upper surface of resonant cavity 1,2 with output window 7 upper surfaces, helps machining and debugging.
Above-mentioned explanation is specifying to the feasible embodiment of the present invention; And this embodiment is not in order to limit claim of the present invention; Allly do not break away from the equivalence that technical spirit of the present invention done and implement or change, for example adopt different microprocessor chips to use execution mode as master controller all should be contained in the claim that the application asks for protection.
Claims (5)
1. the bimodulus cavity filter of a circular corner cut comprises adjacent rectangular cavity body, it is characterized in that: said resonant cavity two bottom sides has asymmetric circular corner cut respectively.
2. bimodulus cavity filter according to claim 1 is characterized in that: the coupling window that is provided with strip between the said resonant cavity.
3. bimodulus cavity filter according to claim 1 is characterized in that: the two ends of said bimodulus cavity filter are provided with the input output window of strip.
4. bimodulus cavity filter according to claim 2 is characterized in that: said coupling window upper surface is concordant with said resonant cavity upper surface.
5. bimodulus cavity filter according to claim 3 is characterized in that: said input output window upper surface is concordant with said 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 true CN102496758A (en) | 2012-06-13 |
| CN102496758B CN102496758B (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 (6)
| 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 |
| JPH0878903A (en) * | 1994-09-09 | 1996-03-22 | Ube Ind Ltd | Dual mode dielectric waveguide type filter and characteristic adjusting method for the same |
| CN1492535A (en) * | 2002-10-23 | 2004-04-28 | ���ߵ���Ƶϵͳ��˾ | Medium single block double mold microwave delay filter |
| 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 |
| CN102222812A (en) * | 2011-03-04 | 2011-10-19 | 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 |
| 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 |
-
2011
- 2011-12-19 CN CN201110426551.0A patent/CN102496758B/en not_active Expired - Fee Related
Patent Citations (6)
| 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 |
| JPH0878903A (en) * | 1994-09-09 | 1996-03-22 | Ube Ind Ltd | Dual mode dielectric waveguide type filter and characteristic adjusting method for the same |
| CN1492535A (en) * | 2002-10-23 | 2004-04-28 | ���ߵ���Ƶϵͳ��˾ | Medium single block double mold microwave delay filter |
| 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 |
| CN102222812A (en) * | 2011-03-04 | 2011-10-19 | 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 |
| 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 |
|---|
| 王春艳: "波导双模滤波器设计", 《中国优秀硕士学位论文》, 15 November 2009 (2009-11-15) * |
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| CN102496758B (en) | 2016-04-20 |
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Granted publication date: 20160420 Termination date: 20191219 |