CN206471469U - A kind of base station adjustable cavity bandstop filter - Google Patents
A kind of base station adjustable cavity bandstop filter Download PDFInfo
- Publication number
- CN206471469U CN206471469U CN201720170940.4U CN201720170940U CN206471469U CN 206471469 U CN206471469 U CN 206471469U CN 201720170940 U CN201720170940 U CN 201720170940U CN 206471469 U CN206471469 U CN 206471469U
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- China
- Prior art keywords
- transmission line
- bandstop filter
- base station
- outer chamber
- sir
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Abstract
A kind of base station adjustable cavity bandstop filter, belongs to bandstop filter technical field.It includes outer chamber, described outer chamber is T-shaped structure, transmission line and SIR resonators are provided with described outer chamber, described transmission line and SIR resonators is vertically arranged, described transmission line is strip lines configuration, described SIR resonators are coaxial cavity structure, and described SIR resonators lower end coordinates tuning screw.A kind of above-mentioned base station adjustable cavity bandstop filter, it is simple in construction, it is reasonable in design, by adding tuner to resonator, centre frequency is realized in a range of continuous tuning by the length of Mechanical course tuning screw, tuner can compensate the index deterioration that mismachining tolerance is brought simultaneously, effectively reduce requirement of the device to machining accuracy, improve realizability.
Description
Technical field
The utility model belongs to bandstop filter technical field, and in particular to a kind of base station adjustable cavity bandreject filtering
Device.
Background technology
Combiner is for multiple signals are synthesized into the microwave device exported all the way, are widely used in modern communicationses system
In system.The arrival communicated with 4G, the more and more narrow isolation strip of limited band resource and interchannel causes communication network many
System, the present situation of multi-standard are more complicated, and this just proposes higher requirement to combiners that many net unifications can be achieved, and cavity
Combiner with high q-factor, powerful feature because be widely used, therefore, and it is very to study high performance cavity combiner
It is necessary.
Bandstop filter can be realized to be filtered out to the spurious signal of a certain special frequency channel, and other frequency band signals to the greatest extent may be used
Undamped it can pass through.Precipitous attenuation outside a channel can be realized using the lower passband of bandstop filter, for can in the design of combiner
To improve the isolation of interchannel.Meanwhile, with the development of mobile communication, it is desirable to which microwave device has multiband, multi-functional characteristic,
And tunable band-stop filter meets different occasion needs and turns into a study hotspot because that can realize the flexible tuning of frequency.
Utility model content
The problem of existing for prior art, the purpose of this utility model, which is to design, provides a kind of base station adjustable cavity
The technical scheme of bandstop filter.
A kind of described base station adjustable cavity bandstop filter, including outer chamber, it is characterised in that described outer chamber
For T-shaped structure, described outer chamber is interior to be provided with transmission line and SIR resonators, and described transmission line and SIR resonators is vertically set
Put, described transmission line is strip lines configuration, described SIR resonators are coaxial cavity structure, described SIR resonators lower end
Coordinate tuning screw.
Described a kind of base station adjustable cavity bandstop filter, it is characterised in that described SIR resonators include low-resistance
Anti- transmission line and high-impedance transmission line, described low impedance transmission line and high-impedance transmission line are coaxially connected.
A kind of described base station adjustable cavity bandstop filter, it is characterised in that the high impedance of described SIR resonators
Transmission line is connected with transmission line.
A kind of above-mentioned base station adjustable cavity bandstop filter, it is simple in construction, it is reasonable in design, by being added to resonator
Tuner, realizes centre frequency in a range of continuous tuning by the length of Mechanical course tuning screw, adjusts simultaneously
Humorous device can compensate the index deterioration that mismachining tolerance is brought, and effectively reduce requirement of the device to machining accuracy, improve
Realizability.Resonator is improved using SIR structures, by controlling the impedance ratio of SIR structures accurately to elapse first
The position of individual parasitic stopband, adds effective top bandwidth, and the wave filter has easy tuning, easy processing, parasitic stopband suppression
The features such as property processed is good, realizability is strong, with very strong engineering application value.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of SIR resonators in the utility model.
In figure：1- outer chambers；2- transmission lines；3-SIR resonators；301- low impedance transmission lines；302- high-impedance transmission lines；
4- tuning screws.
Embodiment
The utility model is further illustrated below in conjunction with Figure of description.
As illustrated in fig. 1 and 2, a kind of base station adjustable cavity bandstop filter includes outer chamber 1, and outer chamber 1 is T-shaped knot
Transmission line 2 and SIR resonators 3 are provided with structure, outer chamber 1, transmission line 2 and SIR resonators 3 are vertically arranged.Wherein transmission line 2 is
Strip lines configuration, SIR resonators 3 are coaxial cavity structure.The lower end of SIR resonators 3 coordinates tuning screw 4.Pass through tuning screw 4
Length carry out free tuning resonance frequency, tuning screw 4 lengthened, and resonant frequency is moved down, and tuning screw 4 reduces, in resonant frequency
Move.
SIR resonators 3 specifically include low impedance transmission line 301 and high-impedance transmission line 302, the He of low impedance transmission line 301
High-impedance transmission line 302 is coaxially connected.The high-impedance transmission line 302 of SIR resonators 3 is connected with transmission line 2.
A kind of above-mentioned base station adjustable cavity bandstop filter, it is simple in construction, it is reasonable in design, with easy tuning, Yi Jia
Work, the features such as parasitic stopband inhibition is good, realizability is strong, with very strong engineering application value.
Claims (3)
1. a kind of base station adjustable cavity bandstop filter, including outer chamber（1）, it is characterised in that described outer chamber（1）For T
Character form structure, described outer chamber（1）It is interior to be provided with transmission line（2）With SIR resonators（3）, described transmission line（2）It is humorous with SIR
Shake device（3）It is vertically arranged, described transmission line（2）For strip lines configuration, described SIR resonators（3）For coaxial cavity structure,
Described SIR resonators（3）Lower end coordinates tuning screw（4）.
2. a kind of base station as claimed in claim 1 adjustable cavity bandstop filter, it is characterised in that described SIR resonators
（3）Including low impedance transmission line（301）And high-impedance transmission line（302）, described low impedance transmission line（301）Passed with high impedance
Defeated line（302）It is coaxially connected.
3. a kind of base station as claimed in claim 2 adjustable cavity bandstop filter, it is characterised in that described SIR resonators
（3）High-impedance transmission line（302）With transmission line（2）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720170940.4U CN206471469U (en) | 2017-02-24 | 2017-02-24 | A kind of base station adjustable cavity bandstop filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720170940.4U CN206471469U (en) | 2017-02-24 | 2017-02-24 | A kind of base station adjustable cavity bandstop filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206471469U true CN206471469U (en) | 2017-09-05 |
Family
ID=59707593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720170940.4U Expired - Fee Related CN206471469U (en) | 2017-02-24 | 2017-02-24 | A kind of base station adjustable cavity bandstop filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206471469U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736117A (en) * | 2018-05-28 | 2018-11-02 | 电子科技大学 | A kind of millimeter wave band bandpass filter with ultra-wide stopband |
-
2017
- 2017-02-24 CN CN201720170940.4U patent/CN206471469U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736117A (en) * | 2018-05-28 | 2018-11-02 | 电子科技大学 | A kind of millimeter wave band bandpass filter with ultra-wide stopband |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170905 Termination date: 20210224 |