CN109326858A - A kind of high inhibition cavity body filter - Google Patents
A kind of high inhibition cavity body filter Download PDFInfo
- Publication number
- CN109326858A CN109326858A CN201811422633.6A CN201811422633A CN109326858A CN 109326858 A CN109326858 A CN 109326858A CN 201811422633 A CN201811422633 A CN 201811422633A CN 109326858 A CN109326858 A CN 109326858A
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- China
- Prior art keywords
- filter
- cavity body
- bandstop
- high inhibition
- realizes
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- 230000005764 inhibitory process Effects 0.000 title claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 abstract description 3
- 238000003672 processing method Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
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- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of high inhibition cavity body filter, the filter is five chamber band logical cavity body filters, five chamber bandstop filters of series connection, bandpass filter and the bandstop filter series connection of no transmission zero.The filter includes first assembly and the second component, and resonant cavity VI ~ X of first assembly realizes the function of bandstop filter, and resonant cavity I ~ V of the second component realizes the bandpass filter model of inferred-zero structure.Filter of the present invention realizes that filter proximal end height inhibits to require in such a way that bandpass filter and bandstop filter are concatenated, which can realize that high inhibition requires in proximal end without transmission zero.The filter is formed using the processing method of punching press, so that product weight and cost be greatly reduced.
Description
Technical field
The present invention relates to a kind of filter, especially a kind of high cavity body filter for inhibiting to require belongs to communication technology neck
Domain.
Background technique
In modern microwave millimeter-wave systems, filter is one of important component, is selected for channel filtering, performance
Superiority and inferiority directly affects the quality of entire communication system.Filter with low insertion loss, high degree of suppression, low cost and quick design etc. become filter and close
Key technology requirement, and conventional filter and design method are difficult to adapt to the needs of modern development.General Chebyshev filters tool
There is sharp frequency selectivity, and can also form multiband filter, therefore various micro- with the group delay of flat filter
It is widely used in wave millimeter-wave systems.Traditional high-volume cavity body filter is using first die casting, the side being machined afterwards
Formula realizes that circuit Extended Model is using N and N+2(N >=1) topological coupled structure.Due to the limitation of design theory, Wu Fa
Continue to make the change of pledge in cavity body filter cost.
As shown in Figure 1, adding the structure of 3 transmission zeros for typical 6 resonant cavity.Realize the 702MHz of Fig. 2 ~
The band connection frequency of 788MHz, and meet the inhibition requirement of 30dB in 791MHz.Since filter uses 3 transmission zeros, only
It can be processed by the way of machining and die casting, have certain limitation in cost selection.
Summary of the invention
The present invention is exactly in view of the deficienciess of the prior art, propose a kind of high inhibition cavity body filter.
To solve the above problems, the technical solution used in the present invention is as follows:
A kind of high inhibition cavity body filter, characterized in that the filter is the series connection five chamber bands resistance of five chamber band logical cavity body filters
Filter, bandpass filter and the bandstop filter series connection of no transmission zero.
As an improvement of the above technical solution, the filter includes first assembly and the second component, first assembly it is humorous
Cavity VI ~ the X that shakes realizes the function of bandstop filter, and resonant cavity I ~ V of the second component realizes the bandpass filtering of inferred-zero structure
Device model.
As an improvement of the above technical solution, the filter punch process molding.
Compared with prior art, implementation result of the invention is as follows by the present invention:
Filter of the present invention realizes that filter proximal end height inhibits in such a way that bandpass filter and bandstop filter are concatenated
It is required that the filter is without transmission zero, but it can be realized in proximal end and high inhibit to require.The filter uses the processing side of punching press
Formula molding, so that product weight and cost be greatly reduced.
Detailed description of the invention
Fig. 1 is the filter construction schematic diagram that typical six resonant cavities add three transmission zeros in background technique；
Fig. 2 is the test curve of filter described in Fig. 1；
Fig. 3 is the conceptual design topological circuit figure of filter of the present invention；
Fig. 4 is the mechanical structure schematic diagram that filter circuit described in Fig. 3 is realized；
Fig. 5 is filter circuit model emulation result of the present invention.
Specific embodiment
Illustrate the contents of the present invention below in conjunction with specific embodiments.
As shown in figure 3, being the conceptual design topological circuit figure of filter of the present invention.Filter of the present invention is one
A five chambers band logical cavity body filter is connected five chamber bandstop filters, and the place A is the bandpass filter without transmission zero in Fig. 3, in Fig. 3
It is bandstop filter at B, bandpass filter and the bandstop filter series connection of no transmission zero are to realize that proximal end height inhibits index.
As shown in figure 4, the mechanical structure schematic diagram realized for filter circuit described in Fig. 3.Filter of the present invention, including
First assembly 10 and the second component 20, resonant cavity VI ~ X of first assembly 10 realize the function of bandstop filter, the second component
20 resonant cavity I ~ V realizes the bandpass filter model of inferred-zero structure.
Filter of the present invention, no transmission zero, but can realize that high inhibition requires in proximal end.The filter uses
The processing method of punching press forms, so that product weight and cost be greatly reduced.
As shown in figure 5, being filter circuit model emulation of the present invention as a result, as can see from Figure 53 points of position
It sets and very precipitous Out-of-band rejection mode may be implemented.
The foregoing is a detailed description of the present invention in conjunction with specific embodiments, and it cannot be said that the present invention is specifically real
It applies and is only limitted to these explanations.For those skilled in the art to which the present invention belongs, before not departing from present inventive concept
It puts, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the scope of protection of the invention.
Claims (3)
1. a kind of high inhibition cavity body filter, characterized in that the filter is five chamber band logical cavity body filters, five chamber bands of series connection
Hinder filter, bandpass filter and the bandstop filter series connection of no transmission zero.
2. a kind of high inhibition cavity body filter as described in claim 1, characterized in that the filter includes first assembly (10)
With the second component (20), resonant cavity VI ~ X of first assembly (10) realizes the function of bandstop filter, the second component (20)
The bandpass filter model of resonant cavity I ~ V realization inferred-zero structure.
3. a kind of high inhibition cavity body filter as claimed in claim 1 or 2, characterized in that the filter punch process molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811422633.6A CN109326858A (en) | 2018-11-27 | 2018-11-27 | A kind of high inhibition cavity body filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811422633.6A CN109326858A (en) | 2018-11-27 | 2018-11-27 | A kind of high inhibition cavity body filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109326858A true CN109326858A (en) | 2019-02-12 |
Family
ID=65257413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811422633.6A Pending CN109326858A (en) | 2018-11-27 | 2018-11-27 | A kind of high inhibition cavity body filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109326858A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747030A (en) * | 1971-06-07 | 1973-07-17 | Oak Electro Netics Corp | Band pass filter with transmission line section |
| DE4232054A1 (en) * | 1992-09-24 | 1994-03-31 | Siemens Matsushita Components | Microwave ceramic filter - incorporates throughput frequency band-defining filter and series-connected coaxial resonator as band stop |
| CN1371534A (en) * | 1999-08-31 | 2002-09-25 | 克洛依莱克特拉有限公司 | High-frequency band pass filter assembly comprising attenuation poles |
| CN102683769A (en) * | 2011-06-15 | 2012-09-19 | 吴芬 | Cavity filter, duplexer, combiner and transmission zero frequency debugging method for cavity filter |
| CN108023155A (en) * | 2017-12-19 | 2018-05-11 | 江苏伊莱尔电力科技有限公司 | A kind of cavity body filter manufacture method |
-
2018
- 2018-11-27 CN CN201811422633.6A patent/CN109326858A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747030A (en) * | 1971-06-07 | 1973-07-17 | Oak Electro Netics Corp | Band pass filter with transmission line section |
| DE4232054A1 (en) * | 1992-09-24 | 1994-03-31 | Siemens Matsushita Components | Microwave ceramic filter - incorporates throughput frequency band-defining filter and series-connected coaxial resonator as band stop |
| CN1371534A (en) * | 1999-08-31 | 2002-09-25 | 克洛依莱克特拉有限公司 | High-frequency band pass filter assembly comprising attenuation poles |
| CN102683769A (en) * | 2011-06-15 | 2012-09-19 | 吴芬 | Cavity filter, duplexer, combiner and transmission zero frequency debugging method for cavity filter |
| CN108023155A (en) * | 2017-12-19 | 2018-05-11 | 江苏伊莱尔电力科技有限公司 | A kind of cavity body filter manufacture method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190212 |