CN202633482U - Compact band elimination filter - Google Patents
Compact band elimination filter Download PDFInfo
- Publication number
- CN202633482U CN202633482U CN 201220337654 CN201220337654U CN202633482U CN 202633482 U CN202633482 U CN 202633482U CN 201220337654 CN201220337654 CN 201220337654 CN 201220337654 U CN201220337654 U CN 201220337654U CN 202633482 U CN202633482 U CN 202633482U
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- China
- Prior art keywords
- transmission line
- resonant cavity
- coupling
- inner wire
- outer conductor
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Abstract
The utility model discloses a compact band elimination filter which comprises a transmission line and a plurality of resonant cavities (3), wherein coupling components (4) are arranged on the side walls of the resonant cavities (3); the resonant cavities (3) are communicated with the transmission line by the coupling components (4); coupling fine-adjustment screws (10) are arranged on the coupling components (4); the resonant cavities (3) are located on the same side of the transmission line; metal bodies (5) are arranged in the resonant cavities (3); and the side walls of the resonant cavities (3) are connected with frequency tuning screws (6) which extend into the resonant cavities (3). By adopting the structure, the compact band elimination filter is simple in integral structure and convenient to implement; and through adjusting the frequency tuning screws (6) in work, the compact band elimination filter is capable of completing the fine adjustment on the resonant frequencies of the resonant cavities (3), and the operation is convenient.
Description
Technical field
The utility model relates to a kind of filter, specifically is the compact band stop filter.
Background technology
Filter is one of high frequency assembly indispensable in the mobile communication product, and its major function is to be used for crossover frequency, promptly blocks the signal of other frequencies through the signal of some frequencies.Desirable filter should be the passband frequency range undamped and in the decay frequency range decay infinitely great, passband should be precipitous as much as possible to the transition of decay frequency range.Band stop filter is a kind of as filter, and it allows through most of frequency components, but the frequency component of some scope decays to extremely low-level filter.On the sidewall of the microwave transmission line of a sealing, increase a coupled resonator, can on the transmission curve of transmission line, some frequency produce transmission zero, thereby the signal that stops these frequencies promptly constitutes a band stop filter through this transmission line.
At present the most common to band stop filter comprise the transmission line of a coaxial configuration and some resonant cavitys of arranging along this transmission line axis.Be provided with metal column in the resonant cavity, the length in resonant cavity of metal column can change outside filter, can regulate the resonance frequency resonant cavity of resonant cavity and the coupling between the transmission line simultaneously through regulating the length of metal column in resonant cavity.Yet the degree of depth that changes in the metal column insertion resonant cavity can change the resonance frequency resonant cavity of resonant cavity and the coupling between the transmission line simultaneously, and this just makes the filter fine setting become difficult.
The utility model content
The purpose of the utility model is to overcome the deficiency of prior art, provides a kind of simple in structure, be convenient to realize, and easy to operate compact band stop filter when filter finely tuned.
The purpose of the utility model mainly realizes through following technical scheme: the compact band stop filter; Comprise transmission line and a plurality of resonant cavity; The sidewall of said a plurality of resonant cavitys is provided with coupling component; Said resonant cavity is connected through coupling component and transmission line, and said coupling component is provided with the coupling micrometer adjusting screw, and said a plurality of resonant cavitys are positioned at the same side of transmission line; Be provided with metallic object in each resonant cavity, and each resonant cavity sidewall all is connected with the frequency tuning screw that extends in the resonant cavity.
Said transmission line comprises transmission line inner wire, insulating medium layer and transmission line outer conductor, and said transmission line outer conductor is set on the transmission line inner wire, and said insulating medium layer is between transmission line outer conductor and transmission line inner wire.Wherein, when specifically being provided with, should guarantee insulating medium layer separation transmission line inner wire and transmission line outer conductor.
The two ends of said transmission line are equipped with coaxial fitting, and the inner wire of said coaxial fitting is connected with the transmission line inner wire after passing transmission line outer conductor, insulating medium layer successively.Should guarantee when wherein, the inner wire of coaxial fitting passes the transmission line outer conductor that it contacts with the transmission line outer conductor.
The two ends of said transmission line all are connected with the metal location-plate, and the inner wire of said coaxial fitting passes the metal location-plate.
In order to realize the coupling of the utility model in band connection frequency, the opposite side that said transmission line is provided with the resonant cavity side relatively is connected with the coupling tuning screw, and said coupling tuning screw one end embeds in the transmission line outer conductor.When specifically being provided with, the position that each coupling component center line is corresponding should be provided with a coupling tuning screw corresponding with it.
Compared with prior art, the utlity model has following beneficial effect: the utility model comprises transmission line and a plurality of resonant cavity, wherein; The sidewall of resonant cavity is provided with coupling component, and resonant cavity is connected through coupling component and transmission line, and a plurality of resonant cavitys are positioned at the same side of transmission line; Be provided with metallic object in each resonant cavity, each resonant cavity sidewall all is connected with the frequency tuning screw that extends in the resonant cavity, and the utility model adopts said structure; Overall structure is simple; Be convenient to realize that easily manufactured, the utility model can be accomplished the adjusting to resonant cavity interior resonance frequency through the regulating frequency tuning screw when work; And less during the regulating frequency tuning screw, and then be convenient to the fine setting of the utility model to the coupling influence between resonant cavity and the transmission line; The coupling component of the utility model is provided with the coupling micrometer adjusting screw, is convenient to independent control is carried out in the coupling between each resonant cavity and the transmission line through the coupling micrometer adjusting screw, and then makes the utility model when work, be more convenient for regulating.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The pairing name of Reference numeral is called in the accompanying drawing: 1, transmission line inner wire, 2, the transmission line outer conductor, 3, resonant cavity, 4, coupling component; 5, metallic object, 6, the frequency tuning screw, 7, the coupling tuning screw; 8, coaxial fitting, 9, the metal location-plate, 10, the coupling micrometer adjusting screw.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is done further to specify, but the execution mode of the utility model is not limited thereto.
Embodiment:
As shown in Figure 1, the compact band stop filter comprises transmission line resonant cavity 3, and wherein, the quantity of resonant cavity 3 is a plurality of, and as preferably, the quantity that resonant cavity 3 is set in the present embodiment is three.The sidewall of a plurality of resonant cavitys 3 is provided with coupling component 4, and resonant cavity 3 is connected through coupling component 4 and transmission line, and coupling component 4 is provided with coupling micrometer adjusting screw 10.Be provided with metallic object 5 in a plurality of resonant cavitys 3, and each resonant cavity 3 sidewall all is connected with the frequency tuning screw 6 that extends in the resonant cavity 3.A plurality of resonant cavitys 3 are positioned at the same side of transmission line, and the opposite side that transmission line is provided with resonant cavity 3 sides relatively is connected with coupling tuning screw 7.
Transmission line comprises transmission line inner wire 1, insulating medium layer and transmission line outer conductor 2; Transmission line outer conductor 2 is set on the transmission line inner wire 1; Insulating medium layer is between transmission line outer conductor 2 and transmission line inner wire 1 and separate transmission line outer conductor 2 and transmission line inner wire 1, and coupling tuning screw 7 embeds in the transmission line outer conductor 2 with the link of transmission line.
The two ends of transmission line are equipped with coaxial fitting 8 and metal location-plate 9; Wherein, Metal location-plate 9 is fixed on the transmission line outer conductor 2 through dog screw, and the inner wire of coaxial fitting 8 is connected with transmission line inner wire 1 after passing metal location-plate 9, transmission line outer conductor 2, insulating medium layer successively.
As stated, then can well realize the utility model.
Claims (5)
1. compact band stop filter; Comprise transmission line and a plurality of resonant cavity (3); The sidewall of said a plurality of resonant cavity (3) is provided with coupling component (4); Said resonant cavity (3) is connected through coupling component (4) and transmission line, it is characterized in that: said coupling component (4) is provided with coupling micrometer adjusting screw (10), and said a plurality of resonant cavitys (3) are positioned at the same side of transmission line; Be provided with metallic object (5) in each resonant cavity (3), and each resonant cavity (3) sidewall all is connected with the frequency tuning screw (6) that extends in the resonant cavity (3).
2. compact band stop filter according to claim 1; It is characterized in that: said transmission line comprises transmission line inner wire (1), insulating medium layer and transmission line outer conductor (2); Said transmission line outer conductor (2) is set on the transmission line inner wire (1), and said insulating medium layer is positioned between transmission line outer conductor (2) and the transmission line inner wire (1).
3. compact band stop filter according to claim 2; It is characterized in that: the two ends of said transmission line are equipped with coaxial fitting (8), and the inner wire of said coaxial fitting (8) is connected with transmission line inner wire (1) after passing transmission line outer conductor (2), insulating medium layer successively.
4. compact band stop filter according to claim 3 is characterized in that: the two ends of said transmission line all are connected with metal location-plate (9), and the inner wire of said coaxial fitting (8) passes metal location-plate (9).
5. according to described any compact band stop filter of claim 2～4; It is characterized in that: the opposite side that said transmission line is provided with resonant cavity (3) side relatively is connected with coupling tuning screw (7), and said coupling tuning screw (7) one ends embed in the transmission line outer conductor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220337654 CN202633482U (en) | 2012-07-13 | 2012-07-13 | Compact band elimination filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220337654 CN202633482U (en) | 2012-07-13 | 2012-07-13 | Compact band elimination filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202633482U true CN202633482U (en) | 2012-12-26 |
Family
ID=47386635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220337654 Expired - Fee Related CN202633482U (en) | 2012-07-13 | 2012-07-13 | Compact band elimination filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202633482U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545585A (en) * | 2012-07-13 | 2014-01-29 | 成都市宏山科技有限公司 | Compact band-stop filter |
-
2012
- 2012-07-13 CN CN 201220337654 patent/CN202633482U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545585A (en) * | 2012-07-13 | 2014-01-29 | 成都市宏山科技有限公司 | Compact 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20130713 |