CN104134840B - A kind of lateral cross electricity wall waveguide bandpass filter - Google Patents
A kind of lateral cross electricity wall waveguide bandpass filter Download PDFInfo
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- CN104134840B CN104134840B CN201410351245.9A CN201410351245A CN104134840B CN 104134840 B CN104134840 B CN 104134840B CN 201410351245 A CN201410351245 A CN 201410351245A CN 104134840 B CN104134840 B CN 104134840B
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Abstract
The present invention proposes a kind of lateral cross electricity wall waveguide bandpass filter, and overall structure is made of filter cavity and upper cover plate, and the two docking is assembled to form complete filter construction；The cavity is formed by intersecting electric wall resonant cavity, and laterally electricity wall is interspersed in cavity both sides, and per adjacent two, electric wall forms a resonator with wave guide wall, and multiple electricity walls form the cascade structure of multiple resonators.The wave filter of the present invention has many merits such as power capacity is big, insertion loss is small, flatness is high, Out-of-band rejection is high, port standing-wave ratio is small, and low to requirement on machining accuracy, and assembling is simple, and production cost is low.
Description
Technical field
The present invention relates to microwave regime, more particularly to a kind of bandpass filter.
Background technology
Critical component of the bandpass filter as microwave circuit, to the performance indicator of entire circuit and system have act foot it is light
The influence of weight.With the continuous development of microwave technology, the requirement to performance of filter is also higher and higher, the filter of high-performance and low-cost
The development of wave device is of great significance.
Bandpass filter refers mainly to indicate insertion loss, flatness, Out-of-band rejection, port standing wave etc..Traditional band logical filter
Wave device mainly divides micro-strip plane bandpass filter and metal waveguide bandpass filter.
It is made simply although micro-strip plane bandpass filter has, easily the characteristics of assembling, radiates larger, power capacity
It is small, so poor-performing, it is difficult to meet the requirement of high performance HIGH-POWERED MICROWAVES system.
Although higher to requirement on machining accuracy based on the bandpass filter of metal waveguide, there is superior performance power to hold
The many merits such as amount is big, insertion loss is small, flatness is high, Out-of-band rejection is high, port standing-wave ratio is small.With mechanical processing level
It is continuously improved, especially in microwave high power field, high performance waveguide bandpass filter is more and more widely used.
Though but traditional metal waveguide bandpass filter improves a lot in terms of performance indicator, to requirement on machining accuracy harshness, and
Assembling and setting is complicated, and production cost is high.
Existing waveguide bandpass filter implementation mainly has E facial mask piece waveguide bandpass filters and interdigital waveguide band logical
Wave filter.E facial mask piece bandpass filters are formed by multiple assembling parts, high to the requirement on machining accuracy of metallic membrane, and are assembled
It is complicated；And the metallic rod assembling and setting difficulty in traditional interdigital waveguide bandpass filter is big, production cost is high, according to independent
Processing metallic rod after assemble, then can introduce rigging error, cause assembling consistency it is poor, so as to cause performance of filter deteriorate and
Yield rate reduces.
Invention content
In order to solve the problems such as requirement on machining accuracy existing for conventional waveguide bandpass filter is high, assembling and setting is complicated, this
Invention gives a kind of novel waveguide bandpass filter with lateral cross electricity wall, the structure not only have flatness height,
The many merits such as insertion loss is small, Out-of-band rejection is high, port standing-wave ratio is small, and requirement on machining accuracy is low, and assembling is simple, production
It is at low cost.
The technical proposal of the invention is realized in this way：
A kind of lateral cross electricity wall waveguide bandpass filter, overall structure are made of filter cavity and upper cover plate, the two
Docking, is assembled to form complete filter construction；
The cavity is formed by intersecting electric wall resonant cavity, and laterally electricity wall is interspersed in cavity both sides, per adjacent two
A electricity wall forms a resonator with wave guide wall, and multiple electricity walls form the cascade structure of multiple resonators.
Optionally, the lateral cross electricity wall quantity of the cavity both sides is identical.
Optionally, the lateral cross electricity wall quantity of the cavity both sides is different.
Optionally, adjacent two electric walls form a resonator, and described two electricity walls are distributed in the homonymy of cavity.
Optionally, adjacent two electric walls form a resonator, and described two electricity walls are distributed in the heteropleural of cavity.
Optionally, all electric walls of wave filter of the invention are disposably machined by milling machine.
The beneficial effects of the invention are as follows：
(1) power capacity is big, insertion loss is small, flatness is high, Out-of-band rejection is high, port standing-wave ratio is small；
(2) low to requirement on machining accuracy, assembling is simple, and production cost is low.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 (a, b) is a kind of structure diagram of lateral cross electricity wall waveguide bandpass filter of the present invention；
Fig. 2 is a kind of lateral cross electricity wall waveguide bandpass filter planar structure schematic diagram of the present invention；
Fig. 3 (a, b) is the vertical of two kinds of different electric wall position distribution structures of electricity wall quantity in filter cavity both sides of the present invention
Body structure diagram；
Fig. 4 (a, b) is the vertical of two kinds of identical electric wall position distribution structures of electricity wall quantity in filter cavity both sides of the present invention
Body structure diagram.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
Existing bandpass filter mainly includes microstrip filter, waveguide E face diaphragm filter and waveguide interdigital filter,
The major defect of microstrip filter is insertion loss is big, and port standing-wave ratio is big, and Out-of-band rejection is low etc.；Traditional waveguide E face diaphragm
Bandpass filter manufacturing procedure is cumbersome, and assembling is complicated；The interdigital bandpass filter difficulty of processing of waveguide is big, to assembly precision requirement
Height, thus 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 tool
There is the waveguide bandpass filter of lateral cross electricity wall, multiple laterally electric walls in the structure are interspersed in cavity both sides, and every two
A adjacent electric wall forms a resonator.The solution of the present invention has fully considered the factors such as difficulty of processing and rigging error, chamber
Body structural parameters are few, convenient for design, can be controlled and disposably machined, and without tuning screw, ensure that excellent by milling machine program
More performance while greatly reduce difficulty of processing and production cost again.
The present invention proposes a kind of novel lateral cross electricity wall waveguide bandpass filter, as shown in Figure 1, overall structure by
Filter cavity 5 and upper cover plate 6 are formed, and the two docking is assembled to form complete filter construction.As shown in Fig. 2, present invention filter
The cavity 5 of wave device is formed by intersecting 3 resonant cavity of electric wall, 4 two parts, and laterally electricity wall is interspersed in cavity both sides, per adjacent
Two electric walls form a resonator with wave guide wall, and multiple electricity walls form the cascade structure of multiple resonators, and all electricity walls can
It is disposably machined by milling machine.Signal enters cavity by input port 1, step by step by each resonator, realizes bandpass filtering, by
Output port 2 exports.A laterally electric wall is increased or decreased in cavity 5, is also equivalent to increase or decrease a resonator,
Therefore, the series of determining resonator can be optimized according to the requirement of performance indicator in Practical Project and appearance and size.The present invention's
Mainly there are laterally two Optimal Parameters of electric wall length and longitudinal cavity length in wave filter total, facilitate designer's height
Effect optimization obtains required index, and therefore, which employs simplified upper cover plate design, eliminates traditional interdigital waveguide band logical
Tuning screw in wave filter so as to reduce processing cost, simplifies assembling process.
The distribution mode and series of the wave filter lateral cross electricity wall of the present invention are not limited to structure shown in Fig. 1 and Fig. 2,
Diversified electric wall distribution can be used, selected 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 both sides of the present invention can be the same or different.Fig. 3 a and Fig. 3 b give
The embodiment of two kinds of different electric wall position distribution structures of cavity both sides electricity wall quantity is gone out.
Two adjacent electric walls of wave filter of the present invention form a resonator, the two electric walls can be distributed in the same of cavity
Side can also be distributed in the heteropleural of cavity.Fig. 4 a and Fig. 4 b give two kinds of identical electric wall positions of cavity both sides electricity wall quantity
The embodiment of distributed architecture.
Present invention is generally directed to conventional waveguide bandpass filter requirement on machining accuracy height, and assembling and setting is complicated, production cost
The problem of high, gives a kind of novel waveguide bandpass filter with lateral cross electricity wall.The wave filter holds with power
The many merits such as amount is big, insertion loss is small, flatness is high, Out-of-band rejection is high, port standing-wave ratio is small, and to requirement on machining accuracy
Low, assembling is simple, and production cost is low.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (3)
1. a kind of lateral cross electricity wall waveguide bandpass filter, which is characterized in that overall structure is by filter cavity and upper cover plate
It forms, the two docking is assembled to form complete filter construction；
The cavity is formed by intersecting electric wall resonant cavity, and laterally electricity wall is interspersed in cavity both sides, per two adjacent electricity
Wall forms a resonator with wave guide wall, and multiple electricity walls form the cascade structure of multiple resonators, have in wave filter total
Laterally two Optimal Parameters of electricity wall length and longitudinal cavity length；
All electricity walls are disposably machined by milling machine；
Described two electricity walls are distributed in the homonymy or heteropleural of cavity.
2. lateral cross electricity wall waveguide bandpass filter as described in claim 1, which is characterized in that the horizontal stroke of the cavity both sides
To intersecting, electric wall quantity is identical.
3. lateral cross electricity wall waveguide bandpass filter as described in claim 1, which is characterized in that the horizontal stroke of the cavity both sides
To intersecting, electric wall quantity is different.
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| CN201410351245.9A CN104134840B (en) | 2014-07-15 | 2014-07-15 | A kind of lateral cross electricity wall waveguide bandpass filter |
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| CN201410351245.9A CN104134840B (en) | 2014-07-15 | 2014-07-15 | A kind of lateral cross electricity wall waveguide bandpass filter |
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| CN104134840A CN104134840A (en) | 2014-11-05 |
| CN104134840B true CN104134840B (en) | 2018-06-19 |
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| 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 |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201117769Y (en) * | 2007-11-09 | 2008-09-17 | 深圳国人通信有限公司 | Multi-cavity high selectivity filter |
| CN203326067U (en) * | 2013-06-28 | 2013-12-04 | 唐玉梅 | Assembling-type filter casing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AU4444096A (en) * | 1995-02-23 | 1996-08-29 | Alcatel N.V. | Microwave filter |
| AUPS216702A0 (en) * | 2002-05-07 | 2002-06-06 | Microwave and Materials Designs IP Pty | Filter assembly |
| FR2848342A1 (en) * | 2002-12-09 | 2004-06-11 | Thomson Licensing Sa | Pass-band filter with pseudo-elliptical response of wave guide type has floating insert inside one inductive iris |
| CN201196971Y (en) * | 2008-04-29 | 2009-02-18 | 南京肯立科技有限责任公司 | Wave filter |
| JP5087111B2 (en) * | 2010-06-28 | 2012-11-28 | 本田技研工業株式会社 | Control device for automatic transmission |
| US8912867B2 (en) * | 2011-05-17 | 2014-12-16 | Apollo Microwaves, Ltd. | Waveguide filter having coupling screws |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201117769Y (en) * | 2007-11-09 | 2008-09-17 | 深圳国人通信有限公司 | Multi-cavity high selectivity filter |
| CN203326067U (en) * | 2013-06-28 | 2013-12-04 | 唐玉梅 | Assembling-type filter casing |
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