CN201011666Y - Band stop filter - Google Patents
Band stop filter Download PDFInfo
- Publication number
- CN201011666Y CN201011666Y CNU200620172676XU CN200620172676U CN201011666Y CN 201011666 Y CN201011666 Y CN 201011666Y CN U200620172676X U CNU200620172676X U CN U200620172676XU CN 200620172676 U CN200620172676 U CN 200620172676U CN 201011666 Y CN201011666 Y CN 201011666Y
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- CN
- China
- Prior art keywords
- cavity
- housing
- stop filter
- coupling
- band stop
- Prior art date
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Abstract
The utility model discloses a band-stop filter, comprising a housing internally provided with more than three cavities, and each cavity is internally provided with a resonance rod; the housing is connected with a cover board, and at least one coupling cavity passes through the housing, while a transporting wire passes through the coupling cavity; moreover, a coupling window is opened between the neighboring cavities in the housing, and the resonance rod is provided with two drawer lines, two taps and a transporting wire. The band-stop filter of the utility model has the general characteristics of simple structure, short developing period and easy assembling and producing, which can change the performance indexes of the band-stop filter by changing the intensity of the coupling and taps of the filter.
Description
Technical field
The utility model belongs to electronic devices and components, is specifically related to a kind of band stop filter.
Background technology
Now in many microwave systems, require signal to propagate therein with as far as possible little loss, and require to have very high inhibition for unwanted interference signal, this just can be competent at a common band pass filter, and it is strong especially for a certain interference signal, we will take special measure to come it has been suppressed, at this moment just can be with band stop filter its feature be that the logical loss of band is low, the near-end of band resistance suppresses.
Usually design of band-stop filter is that the tap wavelength X with n chamber is 1/4,1/8 50 Ω or the transmission line of other form impedance couple together controls the size that stopband suppresses by the coupling power of tap, passband and stopband size and passband at interval inserts the size of loss, also has the stopband that how much can change of chamber number to suppress and bandwidth of rejection.Existing 50 Ω or other form impedance transmission lines be placed on above the filtering or below, tap and transmission line by each chamber couple together, the distance lambda of two tap lines and transmission line solder joint is 1/4 or 1/8 wavelength, there is not coupling window between chamber and the chamber, come transmission signals by transmission line, concrete structure See Figure 1, the filter construction more complicated of this mode, Assembling Production be lost time very also.
Summary of the invention
The purpose of this utility model is to provide a kind of Assembling Production easier band stop filter, to address the above problem.
The technical solution of the utility model is: band stop filter, and it comprises housing, and the cavity more than three that is provided with in the housing is established resonant rod in each cavity, connects cover plate on the housing, and at least one coupling cavity passes housing, and transmission line passes the coupling cavity; Offer coupling window between the adjacent cavity in the housing; Have in the resonant rod to be equipped with on two and be connected with tap line, two taps and transmission line.
The total characteristics of the band stop filter of this form are simple in structure, and the R﹠D cycle is shorter, and Assembling Production is easier.The coupling window that can be by changing filter and the power of tap change the property index of band stop filter.
Description of drawings
Fig. 1 has the band stop filter schematic diagram now
Fig. 2 the utility model band stop filter schematic diagram
Fig. 3 the utility model band stop filter structure schematic diagram
Fig. 4 the utility model band stop filter loam cake schematic diagram
Embodiment
As shown in Figure 2, band stop filter of the present utility model is with one 50 Ω or the transmission line of other form couples together first chamber of filter and the tap and the transmission line in last chamber, the distance lambda that two taps and transmission line connect solder joint is 1/4 or 1/8 wavelength, concrete structure as shown in Figure 3:
It is resonant cavity that four cavitys 3 are set in the housing 9, establishes resonant rod 8 in each cavity 3, and resonant rod 3 can be with square, circular, as long as and the cavity resonance frequency that matches and can meet the demands, arbitrary shape can use; Wherein the resonant rod in first cavity and last cavity is a tap resonant rod 6, promptly connects tap line 2 on common resonant rod.Offer coupling window 7 between adjacent two cavitys 3 (resonant cavity).
Coupling cavity 4 passes housing 9, it can be located at be placed on above the filtering or below; Transmission line 5 passes coupling cavity 4; The shape of coupling cavity 4 is straight or circular arc or bending.Transmission line 5 can be circular, square, straight, and curved needing only cooperates to such an extent that can reach our needed impedance with coupling cavity, and arbitrary form is all right.Transmission line 5 is fixed on the plug connector 1.Tap line 2 on the two tap resonant rods 6 is connected with transmission line 5.The distance lambda that two tap lines and transmission line connect between the solder joint is 1/4 or 1/8 wavelength.
Cover plate 10 as shown in Figure 4.Its shape is to change along with the variation of cavity.
Be connected with coupling window between this band stop filter filtering chamber and the chamber, come transmission signals by coupling window and transmission transmission line.
Claims (3)
1. band stop filter, it comprises housing, the cavity more than three that is provided with in the housing is established resonant rod in each cavity, connects cover plate on the housing, it is characterized in that: at least one coupling cavity passes housing, and transmission line passes the coupling cavity; Offer coupling window between the adjacent cavity in the housing; Have in the resonant rod to be equipped with on two and be connected with tap line, two taps and transmission line.
2. band stop filter according to claim 1 is characterized in that: the distance of the tie point of two tap lines and transmission line is 1/4 or 1/8 wavelength.
3. band stop filter according to claim 1, it is characterized in that: the shape of coupling cavity is straight or circular arc or bending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620172676XU CN201011666Y (en) | 2006-12-28 | 2006-12-28 | Band stop filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620172676XU CN201011666Y (en) | 2006-12-28 | 2006-12-28 | Band stop filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201011666Y true CN201011666Y (en) | 2008-01-23 |
Family
ID=39046610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200620172676XU Expired - Lifetime CN201011666Y (en) | 2006-12-28 | 2006-12-28 | Band stop filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201011666Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728614A (en) * | 2010-01-07 | 2010-06-09 | 东莞市苏普尔电子科技有限公司 | Method for controlling signal attenuation and cross coupling structure |
| CN101894994A (en) * | 2010-07-13 | 2010-11-24 | 江苏贝孚德通讯科技股份有限公司 | Band elimination filter |
| CN101938022A (en) * | 2010-07-22 | 2011-01-05 | 成都九洲迪飞科技有限责任公司 | Adjustable band elimination filter |
| WO2018107633A1 (en) * | 2016-12-14 | 2018-06-21 | 京信通信技术(广州)有限公司 | High-performance band-stop filter and communications cavity device thereof |
| CN114008852A (en) * | 2019-06-28 | 2022-02-01 | 瑞典爱立信有限公司 | Waveguide band-stop filter device |
-
2006
- 2006-12-28 CN CNU200620172676XU patent/CN201011666Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728614A (en) * | 2010-01-07 | 2010-06-09 | 东莞市苏普尔电子科技有限公司 | Method for controlling signal attenuation and cross coupling structure |
| CN101728614B (en) * | 2010-01-07 | 2013-09-18 | 东莞市高鑫机电科技服务有限公司 | Method for controlling signal attenuation and cross coupling structure |
| CN101894994A (en) * | 2010-07-13 | 2010-11-24 | 江苏贝孚德通讯科技股份有限公司 | Band elimination filter |
| CN101938022A (en) * | 2010-07-22 | 2011-01-05 | 成都九洲迪飞科技有限责任公司 | Adjustable band elimination filter |
| WO2018107633A1 (en) * | 2016-12-14 | 2018-06-21 | 京信通信技术(广州)有限公司 | High-performance band-stop filter and communications cavity device thereof |
| CN114008852A (en) * | 2019-06-28 | 2022-02-01 | 瑞典爱立信有限公司 | Waveguide band-stop filter device |
| CN114008852B (en) * | 2019-06-28 | 2023-10-24 | 瑞典爱立信有限公司 | Waveguide band stop filter device |
| US11962055B2 (en) | 2019-06-28 | 2024-04-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Waveguide band-stop filter arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080123 |
|
| EXPY | Termination of patent right or utility model |