CN104134840A - Cross transverse electric-wall waveguide band-pass filter - Google Patents
Cross transverse electric-wall waveguide band-pass filter Download PDFInfo
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- CN104134840A CN104134840A CN201410351245.9A CN201410351245A CN104134840A CN 104134840 A CN104134840 A CN 104134840A CN 201410351245 A CN201410351245 A CN 201410351245A CN 104134840 A CN104134840 A CN 104134840A
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Abstract
The invention provides a cross transverse electric-wall waveguide band-pass filter. The whole structure is composed of a filter cavity and an upper cover plate which are abutted and assembled to from a complete filter structure, the cavity is composed of cross electric walls and a resonant cavity, transverse electric walls are staggered and distributed at the two sides of the cavity, each two adjacent electric walls and a waveguide wall form a resonant cavity, and a plurality of electric walls form a structure cascaded by a plurality of resonant cavities. The filter provided by the invention has the advantages of high power capacity, low insertion loss, high flatness, high out-off-band rejection, small port standing-wave rate and the like, the requirement on processing accuracy is low, assembly is simple, and production cost is low.
Description
Technical field
The present invention relates to microwave regime, particularly a kind of band pass filter.
Background technology
Band pass filter, as the critical component of microwave circuit, has very important impact to the performance index of whole circuit and system.Along with the development of microwave technology, also more and more higher to the requirement of performance of filter, the development of the filter of high-performance and low-cost is significant.
The leading indicator of band pass filter has insertion loss, flatness, Out-of-band rejection, port standing wave etc.Conventional band-pass filters is mainly divided micro-band plane bandpass filter and metal waveguide band pass filter.
Although micro-band plane bandpass filter have make simple, the easily feature of assembling, radiation compared with large, power capacity is little, so poor-performing is difficult to meet the instructions for use of high performance HIGH-POWERED MICROWAVES system.
Although the band pass filter based on metal waveguide is higher to requirement on machining accuracy, superior performance, has the many merits such as power capacity is large, insertion loss is little, flatness is high, Out-of-band rejection is high, port standing-wave ratio is little.Along with improving constantly of machining level, especially in microwave high power field, high performance waveguide bandpass filter has obtained application more and more widely.Though but traditional metal waveguide band pass filter improves a lot aspect performance index, to requirement on machining accuracy harshness, and assembling and setting complexity, production cost is high.
Existing waveguide bandpass filter implementation mainly contains E facial mask sheet waveguide bandpass filter and interdigital waveguide bandpass filter.E facial mask sheet band pass filter is formed by multiple assembling parts, high to the requirement on machining accuracy of metallic membrane, and assembling is complicated; And Metallic rod assembling and setting difficulty in traditional interdigital waveguide bandpass filter is large, production cost is high, if assemble after adopting independent processing metal bar, can introduce rigging error, cause the consistency of assembling poor, thereby cause performance of filter to worsen and rate of finished products reduction.
Summary of the invention
For the problem that solves that the requirement on machining accuracy that conventional waveguide band pass filter exists is high, assembling and setting is complicated etc., the present invention has provided a kind of novel waveguide bandpass filter with lateral cross electricity wall, this structure not only has the many merits such as flatness is high, insertion loss is little, Out-of-band rejection is high, port standing-wave ratio is little, and requirement on machining accuracy is low, assembling is simple, and production cost is low.
Technical scheme of the present invention is achieved in that
A kind of lateral cross electricity wall waveguide bandpass filter, overall structure is made up of filter cavity and upper cover plate, both docking, assembling forms complete filter construction;
Described cavity forms by intersecting electric wall resonant cavity, and transverse electric wall is interspersed in cavity both sides, every adjacent resonant cavity of two electric walls and wave guide wall formation, and multiple electric walls form the structure of multiple resonant cavity cascades.
Alternatively, the lateral cross of described cavity both sides electricity wall quantity is identical.
Alternatively, the lateral cross of described cavity both sides electricity wall quantity difference.
Alternatively, two adjacent electric walls form a resonant cavity, and described two electric walls are distributed in the homonymy of cavity.
Alternatively, two adjacent electric walls form a resonant cavity, and described two electric walls are distributed in the heteropleural of cavity.
Alternatively, all electric walls of filter of the present invention machine by milling machine is disposable.
The invention has the beneficial effects as follows:
(1) power capacity is large, insertion loss is little, flatness is high, Out-of-band rejection is high, port standing-wave ratio is little;
(2) low to requirement on machining accuracy, assembling is simple, and production cost is low.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 (a, b) is the structural representation of a kind of lateral cross of the present invention electricity wall waveguide bandpass filter;
Fig. 2 is a kind of lateral cross electricity of the present invention wall waveguide bandpass filter planar structure schematic diagram;
Fig. 3 (a, b) is the perspective view of two kinds of different electric wall position distribution structures of filter cavity of the present invention both sides electricity wall quantity;
Fig. 4 (a, b) is the perspective view of two kinds of identical electric wall position distribution structures of filter cavity of the present invention both sides electricity wall quantity.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Existing band pass filter mainly comprises microstrip filter, waveguide E face diaphragm filter and waveguide interdigital filter, and the major defect of microstrip filter is that insertion loss is large, and port standing-wave ratio is large, and Out-of-band rejection is low etc.; Traditional waveguide E face diaphragm band pass filter manufacturing procedure is loaded down with trivial details, and assembling is complicated; The interdigital band pass filter difficulty of processing of waveguide is large, high to assembly precision requirement, thereby production cost is high.
By the research and analysis to domestic and international existing waveguide bandpass filter, the present invention proposes a kind of novel waveguide bandpass filter with lateral cross electricity wall, multiple transverse electric walls in this structure are interspersed in cavity both sides, and every two adjacent electric walls form a resonant cavity.The solution of the present invention has taken into full account the factor such as difficulty of processing and rigging error, cavity body structure parameter is few, is convenient to design, can machine by milling machine program control is disposable, and without tuning screw, when having ensured superior function, greatly reduce again difficulty of processing and production cost.
The present invention proposes a kind of novel lateral cross electricity wall waveguide bandpass filter, as shown in Figure 1, overall structure is made up of filter cavity 5 and upper cover plate 6, both docking, and assembling forms complete filter construction.As shown in Figure 2, the cavity 5 of filter of the present invention is made up of electric wall 3 resonant cavity 4 two parts of intersection, transverse electric wall is interspersed in cavity both sides, every adjacent resonant cavity of two electric walls and wave guide wall formation, multiple electric walls have formed the structure of multiple resonant cavity cascades, and all electric walls can machine by milling machine is disposable.Signal enters cavity by input port 1, by each resonant cavity, realizes bandpass filtering step by step, is exported by output port 2.In cavity 5, increase or reduce by a transverse electric wall, being also just equivalent to increase or reduce a resonant cavity, therefore, can optimize the progression of determining resonant cavity according to the requirement of Practical Project performance index and overall dimension.In filter total of the present invention, mainly contain transverse electric wall length and longitudinal two Optimal Parameters of cavity length, facilitate designer's effectively optimizing to obtain required index, therefore, this structure has adopted the upper cover plate design of simplifying, remove the tuning screw in traditional interdigital waveguide bandpass filter, thereby reduce processing cost, simplified assembling process.
Distribution mode and the progression of filter lateral cross electricity wall of the present invention are not limited to structure shown in Fig. 1 and Fig. 2, can adopt diversified electric wall to distribute, and select according to index request, do not increase process and assemble difficulty, do not increase production cost.
The lateral cross electricity wall quantity of filter cavity of the present invention both sides can be the same or different.Fig. 3 a has provided the embodiment of two kinds of electric wall position distribution structures that cavity both sides electricity wall quantity is different with Fig. 3 b.
Two electric walls that filter of the present invention is adjacent form a resonant cavity, and these two electric walls can be distributed in the homonymy of cavity, also can be distributed in the heteropleural of cavity.Fig. 4 a has provided the embodiment of two kinds of electric wall position distribution structures that cavity both sides electricity wall quantity is identical with Fig. 4 b.
The present invention is high mainly for conventional waveguide band pass filter requirement on machining accuracy, assembling and setting complexity, and the problem that production cost is high, has provided a kind of novel waveguide bandpass filter with lateral cross electricity wall.This filter has the many merits such as power capacity is large, insertion loss is little, flatness is high, Out-of-band rejection is high, port standing-wave ratio is little, and low to requirement on machining accuracy, and assembling is simple, and production cost is low.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a lateral cross electricity wall waveguide bandpass filter, is characterized in that, overall structure is made up of filter cavity and upper cover plate, both docking, and assembling forms complete filter construction;
Described cavity forms by intersecting electric wall resonant cavity, and transverse electric wall is interspersed in cavity both sides, every adjacent resonant cavity of two electric walls and wave guide wall formation, and multiple electric walls form the structure of multiple resonant cavity cascades.
2. lateral cross electricity wall waveguide bandpass filter as claimed in claim 1, is characterized in that, the lateral cross electricity wall quantity of described cavity both sides is identical.
3. lateral cross electricity wall waveguide bandpass filter as claimed in claim 1, is characterized in that, the lateral cross electricity wall quantity difference of described cavity both sides.
4. lateral cross electricity wall waveguide bandpass filter as claimed in claim 1, is characterized in that, two adjacent electric walls form a resonant cavity, and described two electric walls are distributed in the homonymy of cavity.
5. lateral cross electricity wall waveguide bandpass filter as claimed in claim 1, is characterized in that, two adjacent electric walls form a resonant cavity, and described two electric walls are distributed in the heteropleural of cavity.
6. the electricity of the lateral cross as described in claim 1 to 5 any one wall waveguide bandpass filter, is characterized in that, all electric walls machine by milling machine is disposable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410351245.9A CN104134840B (en) | 2014-07-15 | 2014-07-15 | A kind of lateral cross electricity wall waveguide bandpass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410351245.9A CN104134840B (en) | 2014-07-15 | 2014-07-15 | A kind of lateral cross electricity wall waveguide bandpass filter |
Publications (2)
| Publication Number | Publication Date |
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| CN104134840A true CN104134840A (en) | 2014-11-05 |
| CN104134840B CN104134840B (en) | 2018-06-19 |
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| CN201410351245.9A Active CN104134840B (en) | 2014-07-15 | 2014-07-15 | A kind of lateral cross electricity wall waveguide bandpass filter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105304981A (en) * | 2015-10-30 | 2016-02-03 | 成都九洲迪飞科技有限责任公司 | Wideband high-inhibition band-pass filter covering Ka band |
| CN110247140A (en) * | 2019-06-12 | 2019-09-17 | 南京邮电大学 | Waveguide mixing ring duplexer |
| CN110911791A (en) * | 2019-12-19 | 2020-03-24 | 中国电子科技集团公司第三十八研究所 | High-rectangular-coefficient waveguide band-pass filter and design method thereof |
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| EP0729197A1 (en) * | 1995-02-23 | 1996-08-28 | Alcatel Espacio | Waveguide microwave filter |
| CN1666379A (en) * | 2002-05-07 | 2005-09-07 | 微波与材料设计Ip私人有限公司 | Filter assembly |
| CN1735994A (en) * | 2002-12-09 | 2006-02-15 | 汤姆森许可贸易公司 | Bandpass filter with pseudo-elliptic response |
| CN201117769Y (en) * | 2007-11-09 | 2008-09-17 | 深圳国人通信有限公司 | Multi-cavity high selectivity filter |
| CN201196971Y (en) * | 2008-04-29 | 2009-02-18 | 南京肯立科技有限责任公司 | Wave filter |
| US20120004818A1 (en) * | 2010-06-28 | 2012-01-05 | Honda Motor Co., Ltd. | Control device for automatic transmission |
| US20120293282A1 (en) * | 2011-05-17 | 2012-11-22 | Giuseppe Frenna | Waveguide filter having coupling screws |
| CN203326067U (en) * | 2013-06-28 | 2013-12-04 | 唐玉梅 | Assembling-type filter casing |
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2014
- 2014-07-15 CN CN201410351245.9A patent/CN104134840B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0729197A1 (en) * | 1995-02-23 | 1996-08-28 | Alcatel Espacio | Waveguide microwave filter |
| CN1666379A (en) * | 2002-05-07 | 2005-09-07 | 微波与材料设计Ip私人有限公司 | Filter assembly |
| CN1735994A (en) * | 2002-12-09 | 2006-02-15 | 汤姆森许可贸易公司 | Bandpass filter with pseudo-elliptic response |
| CN201117769Y (en) * | 2007-11-09 | 2008-09-17 | 深圳国人通信有限公司 | Multi-cavity high selectivity filter |
| CN201196971Y (en) * | 2008-04-29 | 2009-02-18 | 南京肯立科技有限责任公司 | Wave filter |
| US20120004818A1 (en) * | 2010-06-28 | 2012-01-05 | Honda Motor Co., Ltd. | Control device for automatic transmission |
| US20120293282A1 (en) * | 2011-05-17 | 2012-11-22 | Giuseppe Frenna | Waveguide filter having coupling screws |
| CN203326067U (en) * | 2013-06-28 | 2013-12-04 | 唐玉梅 | Assembling-type filter casing |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105304981A (en) * | 2015-10-30 | 2016-02-03 | 成都九洲迪飞科技有限责任公司 | Wideband high-inhibition band-pass filter covering Ka band |
| CN105304981B (en) * | 2015-10-30 | 2018-07-06 | 成都九洲迪飞科技有限责任公司 | The broadband height for covering Ka wave bands inhibits bandpass filter |
| CN110247140A (en) * | 2019-06-12 | 2019-09-17 | 南京邮电大学 | Waveguide mixing ring duplexer |
| CN110911791A (en) * | 2019-12-19 | 2020-03-24 | 中国电子科技集团公司第三十八研究所 | High-rectangular-coefficient waveguide band-pass filter and design method thereof |
| CN110911791B (en) * | 2019-12-19 | 2021-05-07 | 中国电子科技集团公司第三十八研究所 | High-rectangular-coefficient waveguide band-pass filter and design method thereof |
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| Publication number | Publication date |
|---|---|
| CN104134840B (en) | 2018-06-19 |
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