CN2814693Y - Strip line band-stop filter - Google Patents
Strip line band-stop filter Download PDFInfo
- Publication number
- CN2814693Y CN2814693Y CN 200520096857 CN200520096857U CN2814693Y CN 2814693 Y CN2814693 Y CN 2814693Y CN 200520096857 CN200520096857 CN 200520096857 CN 200520096857 U CN200520096857 U CN 200520096857U CN 2814693 Y CN2814693 Y CN 2814693Y
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- strip line
- cover plate
- rod
- transmission line
- main transmission
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Abstract
The utility model relates to a stripline type band stop filter which is mainly composed of main components, such as a resonance cavity, a cover plate, a resonance bar, an adjusting screw rod and a main transmission line. The utility model is characterized in that the main transmission line is one stripline by integral forming, a closed cavity chamber is arranged in the cover plate and the stripline is arranged in the closed cavity chamber in the cover plate. The filter has simple structure and convenient assembly, artificial operation factors are eliminated, and the interference intermodulation indicator is enhanced and stabilized; the weight of products is reduced, material is saved and the cost and the volume of the products are greatly reduced.
Description
Technical field
The utility model relates to the microwave communication field, relates in particular to strip line formula band stop filter.
Background technology
Existing band stop filter (duplexer) is a passive device, it can with other filter can't filtering the interference signal decay, the frequency of fixed attenuation is suppressed, guarantee the operate as normal between operating frequency, and pass through with the loss of minimum.What this band stop filter adopted is the principle design of distributed constant, and whole performance index realize by mechanical structure.Traditional band stop filter, normally form by main components such as resonant cavity, cover plate, resonant rod, adjusting screw(rod) and main transmission lines, wherein, it is on resonant cavity that resonant rod is installed, adjusting rod and main transmission line are laid on the cover board, that processes on the cover plate face has a rectangular channel with main transmission line coupling, and the main transmission lines (coaxial line) of many series connection welding are laid in the inside, as shown in Figure 1 and Figure 2.The resonant cavity electroplate, cover plate is silver-plated, and resonant rod is silver-plated.The filter of this structure is had relatively high expectations to cavity and cover plate, because when radiofrequency signal is arranged, can generate an electromagnetic field around the main transmission line, electric current during product work is mainly transmitted by it, the impedance matching quality of whole circuit has directly determined service behaviour and filtering characteristic, the transmission line in every chamber all will connect with the mode of welding during assembling, so the size of the rectangular channel of processing on the cover plate face and the processing dimension of main transmission line, attaching size, link position and pad, meeting directly influence the matching properties and the loss value of filter; The position of Lian Jieing is too much on the other hand, disturbs the intermodulation index to descend, and this is an index very important also very rambunctious, and can't adjust, and all needs technology to guarantee; Because multistage syndeton has scale error just to need to adjust slightly, the cover plate processed complex, the welding of multistage main transmission line and assembling are bigger to the influence of index, structure fabrication cost height.
Summary of the invention
The purpose of this utility model is in order to solve the deficiency that the above-mentioned background technology exists, the strip line formula band stop filter that a kind of structure is more optimized is proposed, make it can improve and stablize interference intermodulation index, reduce the cover plate main transmission line owing to the index that processing, assembling produce is adjusted problem, alleviate product weight, economical with materials.
The utility model adopts following technical scheme for achieving the above object: a kind of strip line formula band stop filter, mainly form by resonant cavity, cover plate, resonant rod, adjusting screw(rod) and main transmission line main components, it is characterized in that described main transmission line is an integrally formed strip line, be provided with the chamber of sealing in the described cover plate, strip line is installed in the chamber of above-mentioned cover plate inner sealing.
The cross section of above-mentioned strip line can be square, rectangle, polygon, triangle, circle or oval.
Above-mentioned resonant rod can be installed on the cover board, and adjusting screw(rod) can be installed in the resonant cavity bottom.
Above-mentioned resonant rod also can be installed in the resonant cavity bottom, and adjusting screw(rod) is installed on the cover board.
The utility model is according to the Filter Design principle, with the strip line that to be designed to a cross section be Any shape of the main transmission line in the filter, the chamber that forms sealing will once be emptied at cover inner surface above whole, the principle of strip transmission line can be realized in the chamber the inside that strip line is installed in this sealing, thereby replaces coaxial transmission line.Because the utility model is an overall wire, thereby guarantee the consistency of the coupling of whole filter to stripline design, exempted the uncertainty of dress welding.This design is not because high to structural requirement, and operation principle is constant again, so it can all be brought the potentiality of strip line into play.
The utility model is realized the filter transmission structure that a kind of renewal is more excellent, and it is simple in structure, and is easy to assembly, has eliminated artificial operation factors, improves and the stable intermodulation index of disturbing, and alleviates product weight, and economical with materials greatly reduces the cost of product and volume.
Description of drawings
Fig. 1 is the schematic diagram of the described coaxial main transmission line of traditional band stop filter in cover plate.
Fig. 2 is the stereogram of the coaxial main transmission line of traditional band pass filter in cover plate.
Fig. 3 is the schematic diagram of coaxial main transmission line described in the utility model in cover plate.
Fig. 4 is the stereogram of coaxial main transmission line described in the utility model in cover plate.
Fig. 5 is embodiment 2 described covering plate structure front views.
Fig. 6 is the left view of Fig. 5.
Fig. 7 is embodiment 2 described cavity body structure front views.
Fig. 8 is the left view of Fig. 7.
Embodiment
Embodiment 1: referring to Fig. 3 and Fig. 4, present embodiment mainly is made up of resonant cavity, cover plate 1, resonant rod, adjusting screw(rod), main transmission line 2, input 3 and output 4 main components, wherein, described main transmission line 2 is an integrally formed strip line, can adopt cutting or process for stamping manufacturing with metallic plate, its shape can be according to the relevant parameter setting of filter.Be provided with the chamber 5 of sealing in the described cover plate 1, strip line is installed in the above-mentioned chamber 5.Described strip line shape of cross section is preferably square, rectangle or circle, so that processing obtains.The size of strip line cross section can be according to the relevant parameter setting of filter.
The structure of present embodiment resonant rod and adjusting screw(rod) is the same with installation site simultaneous interpretation regiment commander resistance filter, and it is on resonant cavity that resonant rod is installed, and adjusting rod and main transmission line are laid on the cover board.Not expression among the figure.
Embodiment 2: referring to Fig. 5 to Fig. 8, present embodiment mainly is made up of resonant cavity 6, cover plate 1, resonant rod 7, adjusting screw(rod) 8, main transmission line 2, input 3 and output 4 main components, wherein, the structure of main transmission line 2 and embodiment 1 identical (not shown), difference is, described resonant rod 7 is installed on the cover plate 1, and adjusting screw(rod) 8 is installed in resonant cavity 6 bottoms.
Claims (4)
1, strip line formula band stop filter, mainly form by resonant cavity, cover plate, resonant rod, adjusting screw(rod) and main transmission line main components, it is characterized in that described main transmission line is an integrally formed strip line, be provided with the chamber of sealing in the described cover plate, strip line is installed in the chamber of above-mentioned cover plate inner sealing.
2, according to the described strip line formula of claim 1 band stop filter, the cross section that it is characterized in that described strip line is square, rectangle, polygon, triangle, circle or oval.
3, according to claim 1 or 2 described strip line formula band stop filters, it is characterized in that described resonant rod installation on the cover board, adjusting screw(rod) is installed in the resonant cavity bottom.
4, according to claim 1 or 2 described strip line formula band stop filters, it is characterized in that described resonant rod is installed in the resonant cavity bottom, adjusting screw(rod) is installed on the cover board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520096857 CN2814693Y (en) | 2005-06-23 | 2005-06-23 | Strip line band-stop filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520096857 CN2814693Y (en) | 2005-06-23 | 2005-06-23 | Strip line band-stop filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2814693Y true CN2814693Y (en) | 2006-09-06 |
Family
ID=36949779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520096857 Expired - Lifetime CN2814693Y (en) | 2005-06-23 | 2005-06-23 | Strip line band-stop filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2814693Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103117431A (en) * | 2011-11-17 | 2013-05-22 | 成都赛纳赛德科技有限公司 | Cavity body high-pass filter |
| CN106329047A (en) * | 2016-08-30 | 2017-01-11 | 成都赛纳微波科技有限公司 | Non-insulated band-stop filter |
| CN106329045A (en) * | 2016-08-30 | 2017-01-11 | 成都赛纳微波科技有限公司 | Cylindrical cavity ridge coupling band-stop filter |
-
2005
- 2005-06-23 CN CN 200520096857 patent/CN2814693Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103117431A (en) * | 2011-11-17 | 2013-05-22 | 成都赛纳赛德科技有限公司 | Cavity body high-pass filter |
| CN106329047A (en) * | 2016-08-30 | 2017-01-11 | 成都赛纳微波科技有限公司 | Non-insulated band-stop filter |
| CN106329045A (en) * | 2016-08-30 | 2017-01-11 | 成都赛纳微波科技有限公司 | Cylindrical cavity ridge coupling band-stop filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150623 Granted publication date: 20060906 |