CN103545585A - Compact band-stop filter - Google Patents
Compact band-stop filter Download PDFInfo
- Publication number
- CN103545585A CN103545585A CN201210241173.3A CN201210241173A CN103545585A CN 103545585 A CN103545585 A CN 103545585A CN 201210241173 A CN201210241173 A CN 201210241173A CN 103545585 A CN103545585 A CN 103545585A
- Authority
- CN
- China
- Prior art keywords
- transmission line
- resonant cavity
- coupling
- inner wire
- outer conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a compact band-stop filter which comprises a transmission line and a plurality of resonant cavities (3). The side wall of each resonant cavity (3) is provided with a coupling component (4), and the resonant cavities (3) are connected with the transmission line through the corresponding coupling components (4). Each coupling component (4) is provided with a coupling tuning screw (10), the resonant cavities (3) are located on the same side of the transmission line, each resonant cavity (3) is provided with a metal body (5), and the side wall of each resonant cavity (3) is connected with a frequency tuning screw (6) extending to each resonant cavity (3). By the above structure, the compact band-stop filter is simple in integral structure, easy to implement and convenient to operate; resonance frequency tuning of the resonant cavities (3) can be completed by tuning of the frequency tuning screws (6).
Description
Technical field
The present invention relates to a kind of filter, specifically compact-type band-resistance filter.
Background technology
Filter is one of high frequency assembly indispensable in mobile communication product, and its major function is for crossover frequency, by the signal of some frequencies, blocks the signal of other frequencies.Desirable filter should be passband frequency range undamped and in 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 by 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 stop the signal of these frequencies by this transmission line, form a band stop filter.
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.In resonant cavity, be provided with metal column, the length in resonant cavity of metal column can change from filter, by regulate the length of metal column in resonant cavity can regulate the resonance frequency resonant cavity of resonant cavity and the coupling between transmission line simultaneously.Yet the degree of depth changing in metal column insertion resonant cavity can change the resonance frequency resonant cavity of resonant cavity and the coupling between transmission line simultaneously, this just makes filter fine setting become difficult.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of simple in structure, be convenient to realize, and easy to operate compact-type band-resistance filter when filter is finely tuned.
Object of the present invention is achieved through the following technical solutions: compact-type band-resistance filter, comprise transmission line and a plurality of resonant cavity, the sidewall of described a plurality of resonant cavitys is provided with coupling component, described resonant cavity is connected by coupling component and transmission line, on described coupling component, be provided with coupling micrometer adjusting screw, described a plurality of resonant cavity is positioned at the same side of transmission line, in each resonant cavity, is provided with metallic object, and each resonant cavity sidewall is all connected with the frequency tuning screw extending in resonant cavity.
Described transmission line comprises transmission line inner wire, insulating medium layer and transmission line outer conductor, and described transmission line outer conductor is set on transmission line inner wire, and described insulating medium layer is between transmission line outer conductor and transmission line inner wire.Wherein, when specifically arranging, should guarantee insulating medium layer separation transmission line inner wire and transmission line outer conductor.
The two ends of described transmission line are equipped with coaxial fitting, and the inner wire of described coaxial fitting is successively through being connected with transmission line inner wire after transmission line outer conductor, insulating medium layer.When wherein, the inner wire of coaxial fitting is through transmission line outer conductor, should guarantee that it contacts with transmission line outer conductor.
The two ends of described transmission line are all connected with metal location-plate, and the inner wire of described coaxial fitting is through metal location-plate.
In order to realize the coupling of the present invention in band connection frequency, the opposite side that described transmission line is provided with resonant cavity side is relatively connected with coupling tuning screw, and described coupling tuning screw one end embeds in transmission line outer conductor.When specifically arranging, the position that each coupling component center line is corresponding should arrange a coupling tuning screw corresponding with it.
Compared with prior art, the present invention has following beneficial effect: the present invention includes transmission line and a plurality of resonant cavity, wherein, the sidewall of resonant cavity is provided with coupling component, resonant cavity is connected by coupling component and transmission line, a plurality of resonant cavitys are positioned at the same side of transmission line, in each resonant cavity, be provided with metallic object, each resonant cavity sidewall is all connected with the frequency tuning screw extending in resonant cavity, the present invention adopts said structure, overall structure is simple, be convenient to realize, easily manufactured, the present invention can complete the adjusting to resonant cavity interior resonance frequency by regulating frequency tuning screw when work, and less to the coupling influence between resonant cavity and transmission line during regulating frequency tuning screw, and then be convenient to fine setting of the present invention, on coupling component of the present invention, be provided with coupling micrometer adjusting screw, by coupling micrometer adjusting screw, be convenient to the coupling between each resonant cavity and transmission line to carry out independent control, and then make the present invention be more convenient for regulating when work.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
In accompanying drawing, the corresponding name of Reference numeral is called: 1, transmission line inner wire, 2, transmission line outer conductor, 3, resonant cavity, 4, coupling component, 5, metallic object, 6, frequency tuning screw, 7, coupling tuning screw, 8, coaxial fitting, 9, metal location-plate, 10, coupling micrometer adjusting screw.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment:
As shown in Figure 1, compact-type band-resistance 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 by coupling component 4 and transmission line, is provided with coupling micrometer adjusting screw 10 on coupling component 4.In a plurality of resonant cavitys 3, be provided with metallic object 5, and each resonant cavity 3 sidewall is all connected with the frequency tuning screw 6 extending in 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 is relatively 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 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 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 transmission line outer conductor 2 by dog screw, and the inner wire of coaxial fitting 8 is successively through being connected with transmission line inner wire 1 after metal location-plate 9, transmission line outer conductor 2, insulating medium layer.
As mentioned above, can well realize the present invention.
Claims (5)
1. compact-type band-resistance filter, comprise transmission line and a plurality of resonant cavity (3), the sidewall of described a plurality of resonant cavity (3) is provided with coupling component (4), described resonant cavity (3) is connected by coupling component (4) and transmission line, it is characterized in that: on described coupling component (4), be provided with coupling micrometer adjusting screw (10), described a plurality of resonant cavity (3) is positioned at the same side of transmission line, in each resonant cavity (3), be provided with metallic object (5), and each resonant cavity (3) sidewall is all connected with the frequency tuning screw (6) extending in resonant cavity (3).
2. compact-type band-resistance filter according to claim 1, it is characterized in that: described transmission line comprises transmission line inner wire (1), insulating medium layer and transmission line outer conductor (2), it is upper that described transmission line outer conductor (2) is set in transmission line inner wire (1), and described insulating medium layer is positioned between transmission line outer conductor (2) and transmission line inner wire (1).
3. compact-type band-resistance filter according to claim 2, it is characterized in that: the two ends of described transmission line are equipped with coaxial fitting (8), the inner wire of described coaxial fitting (8) is successively through being connected with transmission line inner wire (1) after transmission line outer conductor (2), insulating medium layer.
4. compact-type band-resistance filter according to claim 3, is characterized in that: the two ends of described transmission line are all connected with metal location-plate (9), and the inner wire of described coaxial fitting (8) is through metal location-plate (9).
5. according to any compact-type band-resistance filter described in claim 2～4, it is characterized in that: the opposite side that described transmission line is provided with resonant cavity (3) side is relatively connected with coupling tuning screw (7), and described coupling tuning screw (7) one end embeds in transmission line outer conductor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210241173.3A CN103545585A (en) | 2012-07-13 | 2012-07-13 | Compact band-stop filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210241173.3A CN103545585A (en) | 2012-07-13 | 2012-07-13 | Compact band-stop filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103545585A true CN103545585A (en) | 2014-01-29 |
Family
ID=49968808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210241173.3A Pending CN103545585A (en) | 2012-07-13 | 2012-07-13 | Compact band-stop filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103545585A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1756907A1 (en) * | 2004-05-12 | 2007-02-28 | Filtronic Comtek Oy | Band stop filter |
| CN102074775A (en) * | 2011-01-24 | 2011-05-25 | 成都赛纳赛德科技有限公司 | Band elimination filter |
| CN102324598A (en) * | 2011-08-01 | 2012-01-18 | 成都赛纳赛德科技有限公司 | Adjustable band elimination filter |
| CN202333096U (en) * | 2011-11-17 | 2012-07-11 | 成都赛纳赛德科技有限公司 | Miniaturized band elimination filter |
| CN202633482U (en) * | 2012-07-13 | 2012-12-26 | 成都市宏山科技有限公司 | Compact band elimination filter |
-
2012
- 2012-07-13 CN CN201210241173.3A patent/CN103545585A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1756907A1 (en) * | 2004-05-12 | 2007-02-28 | Filtronic Comtek Oy | Band stop filter |
| CN102074775A (en) * | 2011-01-24 | 2011-05-25 | 成都赛纳赛德科技有限公司 | Band elimination filter |
| CN102324598A (en) * | 2011-08-01 | 2012-01-18 | 成都赛纳赛德科技有限公司 | Adjustable band elimination filter |
| CN202333096U (en) * | 2011-11-17 | 2012-07-11 | 成都赛纳赛德科技有限公司 | Miniaturized band elimination filter |
| CN202633482U (en) * | 2012-07-13 | 2012-12-26 | 成都市宏山科技有限公司 | Compact band elimination filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102544650B (en) | Coaxial resonant cavity mixed coupling method | |
| CN201181730Y (en) | Controllable electromagnetic mixed coupling coaxial cavity wave filter | |
| CN103855448A (en) | TM mode dielectric filter | |
| CN103682535A (en) | Coaxial cavity dual-band filter based on stepped impedance structure | |
| CN102832429B (en) | Coaxial cavity filter | |
| CN107994310A (en) | A kind of dielectric waveguide filter negative zero point coupled structure | |
| CN103972615B (en) | Novel low pass filtering access and adopt its communication cavity device | |
| CN105226354A (en) | The strong high frequency side stopband of three mode couplings suppresses microstrip bandpass filter and coupling process | |
| CN203260696U (en) | TM mode dielectric filter | |
| CN103545580A (en) | Miniaturized adjustable band stop filter | |
| CN203166048U (en) | Mixed-mode radio frequency/microwave band elimination filter | |
| CN109390644B (en) | Double-cavity four-mode dielectric waveguide filter | |
| CN203895578U (en) | Filter loading electric field by using coaxial cavity gradually changing spiral tubes | |
| CN203644914U (en) | Coaxial cavity dual-band filter based on step impedance structure | |
| CN202633482U (en) | Compact band elimination filter | |
| CN202633483U (en) | Adjustable band-rejection filter | |
| CN203300771U (en) | Novel low-pass filtering pathway, filter, combiner and duplexer | |
| CN100553033C (en) | The capacitive coupling device of coaxial cavity filter | |
| CN202662748U (en) | Miniaturized adjustable band elimination filter | |
| CN201936972U (en) | Band elimination filter | |
| CN205911408U (en) | Coupled structure of medium multicavity wave filter | |
| CN103545585A (en) | Compact band-stop filter | |
| CN106025467A (en) | Coupling structure of dielectric multi-cavity filter | |
| CN207719379U (en) | A kind of dielectric waveguide filter negative zero point coupled structure | |
| CN202550044U (en) | Band-stop filter based on coaxial cavities |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140129 |