CN207474634U - A kind of cavity body filter - Google Patents
A kind of cavity body filter Download PDFInfo
- Publication number
- CN207474634U CN207474634U CN201721573199.2U CN201721573199U CN207474634U CN 207474634 U CN207474634 U CN 207474634U CN 201721573199 U CN201721573199 U CN 201721573199U CN 207474634 U CN207474634 U CN 207474634U
- Authority
- CN
- China
- Prior art keywords
- rectangular shaft
- cavity
- circle
- rank
- rank rectangular
- 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.)
- Expired - Fee Related
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The utility model provides a kind of cavity body filter, including cavity, first to m rank rectangular shafts circle, the 4* for fixing the position of rectangular shaft circle（m+1）Block medium block, input adapter and out splice going splice；First to m rank rectangular shafts circle set in the cavity；Input adapter is arranged on cavity left side；Out splice going splice has been arranged on side；Input adapter connects the input terminal of the first rank rectangular shaft circle, and out splice going splice connects the output terminal of m rank rectangular shaft circles；4*（m+1）Block medium block be separately positioned at the top of the first four, rank rectangular shaft circle between apex angle and cavity bottom, four apex angles of m rank rectangular shafts circle and cavity between, between the apex angle of the i-th rank rectangular shaft circle and i+1 rank rectangular shaft circle.A kind of cavity body filter of the utility model has many advantages, such as that simple and compact for structure, small, element is few, stability is high, Q values are moderate, power capacity is high, at low cost.In front-end filtering and indoor distributed system for major mobile communication base station.
Description
Technical field
The utility model belongs to moving communicating field, more particularly to a kind of cavity body filter.
Background technology
With the fast development of the communication technology especially satellite technology, the performance requirement of communication system is also higher and higher.Institute
Very high requirement is proposed with the improvement of the demand to new microwave component and performance, and microwave filter is as in wireless communication
An indispensable part is especially widely used in the cavity body filter of mobile communication base station or indoor distributed system, it is also necessary to
Adapt to the requirement of this new period.It is contemplated that providing a kind of cavity body filter of utility model, meet corresponding index requirement
While, the volume that can reduce wave filter the power capacity for increasing wave filter, reduces the cost of wave filter, and is readily produced,
It is practical and convenient.
The cavity of the coaxial cavity configuration of metal, microstrip structure or dielectric resonator structure is largely used in existing cavity body filter
Wave filter.Its advantage of the cavity body filter of the coaxial cavity configuration of metal is that loss is small, Q values are moderate, power capacity is big, moderate,
Shortcoming is bulky；Its advantage of the cavity body filter of microstrip structure is small, at low cost, and shortcoming is that loss is big, Q values are low；
Its advantage of the cavity body filter of dielectric resonator structure is that loss is small, Q values are high, power capacity is big, and shortcoming is bulky, price
It is expensive.
Invention content
In order to overcome above-mentioned existing deficiency, the utility model provides a kind of cavity body filter of utility model, Neng Gou
While meeting corresponding index requirement, moreover it is possible to reduce the volume of wave filter, reduce the cost of wave filter.
The utility model uses following technical scheme：A kind of cavity body filter, including cavity, first to m rank rectangles
Bar circle, the 4* for fixing the position of rectangular shaft circle（m+1）Block medium block, input adapter and out splice going splice；Described first to m
Rank rectangular shaft circle is set in the cavity；The input adapter is arranged on cavity left side；Out splice going splice is arranged on right side；It is described
Input adapter connects the input terminal of the first rank rectangular shaft circle, the output terminal of the out splice going splice connection m rank rectangular shaft circles；
4*（m+1）Block medium block is separately positioned on the first four, rank rectangular shaft circle between apex angle and cavity bottom, m rank rectangular shafts circle four
Between at the top of a apex angle and cavity, between the apex angle of the i-th rank rectangular shaft circle and i+1 rank rectangular shaft circle；Wherein 1≤i<m；M is
Natural number not less than 1.
In one embodiment of the utility model, the m is 3.
In one embodiment of the utility model, first to the Zhou Changwei wave filters of m rank rectangular shaft circles centre frequency
The 1/2 of wavelength.
In one embodiment of the utility model, first to m rank rectangular shaft circles is air strip line structure.
Compared with prior art, the utility model provides a kind of cavity body filter.With simple and compact for structure, volume
Small, the advantages that element is few, stability is high, Q values are moderate, power capacity is high, at low cost.It is mainly used for major mobile communication base station
In front-end filtering and indoor distributed system.
Description of the drawings
Fig. 1 is the internal structure schematic diagram of the utility model；
Fig. 2 is the novel overlooking the structure diagram of this reality；
Fig. 3 is the novel side structure schematic view of this reality；
Fig. 4 is the novel simulation result figure of this reality.
Specific embodiment
Explanation is further explained to the utility model in the following with reference to the drawings and specific embodiments.
A kind of cavity body filter, including cavity, first to m rank rectangular shafts circle, the position for fixing rectangular shaft circle
4*（m+1）Block medium block, input adapter and out splice going splice；Described first to m rank rectangular shafts circle set in the cavity；It is described
Input adapter is arranged on cavity left side；Out splice going splice is arranged on right side；The input adapter connects the first rank rectangle
The input terminal of bar circle, the output terminal of the out splice going splice connection m rank rectangular shaft circles；4*（m+1）Block medium block is separately positioned on
First four, rank rectangular shaft circle is between apex angle and cavity bottom, at the top of four apex angles of m rank rectangular shafts circle and cavity between, i-th
Between the apex angle of rank rectangular shaft circle and i+1 rank rectangular shaft circle；Wherein 1≤i<m；M is the natural number not less than 1.
In one embodiment of the utility model, the m is 3.
In one embodiment of the utility model, first to the Zhou Changwei wave filters of m rank rectangular shaft circles centre frequency
The 1/2 of wavelength.
In one embodiment of the utility model, first to m rank rectangular shaft circles is air strip line structure.
The cavity body filter of the utility model, using air strip line structure, to form the exponent number of wave filter, each circle generation
One exponent number of table wave filter, the degree of suppression of wave filter can be improved by increasing the exponent number of wave filter, designed by the Zhou Changwei per single order
The 1/2 of the wavelength of the centre frequency of wave filter, the position of the gap per rank determine the position of the zero of designed wave filter
It puts, the resonant frequency of the fine-tuning wave filter of size of the gap per rank, the spacing of each rank rectangular shaft circle determines designed
The bandwidth of wave filter.
The utility model is by taking third-order filter as an example, i.e. m is 3, as shown in Figs. 1-3.Including cavity 12, inside cavity installation
The first rank rectangular shaft circle 1, second-order rectangular shaft circle 2,3,16 pieces of medium blocks of third rank rectangular shaft circle, input adapter 8, output connect
First 9.Medium block 4,4', 4'', 4''' are placed between 1 apex angle of 12 bottom of cavity and the first rank rectangular shaft circle, medium block 5,5',
5'', 5''' are placed between the first rank rectangular shaft circle 1 and second-order rectangular shaft circle 2, and medium block 6,6', 6'', 6''' are placed on second
Between 3 apex angle of rank rectangular shaft circle 2 and third rank rectangular shaft circle, medium block 7,7', 7'', 7''' are placed on third rank rectangular shaft circle 3 four
Between 12 top of a apex angle and cavity.Medium block is used to fixing the position of rectangular shaft circle, the external connection input adapter 8 of cavity,
Out splice going splice 9, input port 8 connect the input terminal 10 of the first rank rectangular shaft circle 1, and delivery outlet 9 connects the third rank rectangle
The output terminal 11 of bar circle 3.The cavity body filter possesses higher power capacity, smaller volume, lower cost, and easily
It is practical and convenient in production.Main emulation schematic diagram is referring to Fig. 4.
Signal through input adapter to the first rank rectangular shaft circle, then by the first rank rectangular shaft circle by being electromagnetically coupled to second-order
Rectangular shaft circle most exports until m rank rectangular shaft circles through out splice going splice afterwards；Due to rectangular shaft circle be air strip line structure, institute
Using its work main mould as TEM waves；Suitably adjust the spacing between each rank rectangular shaft circle（Adjust 4 Jie between each rank rectangular shaft circle
The height of mass）And the gap position in rectangular shaft circle, you can change the bandwidth of wave filter and the position with interior inhibition point
It puts；Since wave filter is passive reciprocal device, so input/output terminal is used interchangeably.
It is the preferred embodiment of the utility model above, all changes made according to technical solutions of the utility model are produced
Function without departing from technical solutions of the utility model range when, belong to the scope of protection of the utility model.
Claims (4)
1. a kind of cavity body filter, it is characterised in that：Including cavity, first to m rank rectangular shafts circle, for fixing rectangular shaft circle
Position 4*（m+1）Block medium block, input adapter and out splice going splice；Described first is arranged on cavity to m rank rectangular shaft circles
It is interior；The input adapter is arranged on cavity left side；Out splice going splice is arranged on right side；The input adapter connection described first
The input terminal of rank rectangular shaft circle, the output terminal of the out splice going splice connection m rank rectangular shaft circles；4*（m+1）Block medium block is distinguished
It is arranged on the first four, rank rectangular shaft circle between apex angle and cavity bottom, four apex angles of m rank rectangular shafts circle and cavity top
Between, between the apex angle of the i-th rank rectangular shaft circle and i+1 rank rectangular shaft circle；Wherein 1≤i<m；M is the natural number not less than 1.
2. cavity body filter according to claim 1, it is characterised in that：The m is 3.
3. cavity body filter according to claim 1, it is characterised in that：First to m rank rectangular shaft circles Zhou Changwei filter
The 1/2 of the wavelength of the centre frequency of wave device.
4. cavity body filter according to claim 1, it is characterised in that：First to m rank rectangular shaft circles be air band
Shape cable architecture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721573199.2U CN207474634U (en) | 2017-11-22 | 2017-11-22 | A kind of cavity body filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721573199.2U CN207474634U (en) | 2017-11-22 | 2017-11-22 | A kind of cavity body filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207474634U true CN207474634U (en) | 2018-06-08 |
Family
ID=62258220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721573199.2U Expired - Fee Related CN207474634U (en) | 2017-11-22 | 2017-11-22 | A kind of cavity body filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207474634U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959096A (en) * | 2017-11-22 | 2018-04-24 | 福州同创微波通讯技术有限公司 | A kind of cavity body filter and its method of work |
-
2017
- 2017-11-22 CN CN201721573199.2U patent/CN207474634U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959096A (en) * | 2017-11-22 | 2018-04-24 | 福州同创微波通讯技术有限公司 | A kind of cavity body filter and its method of work |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107464978B (en) | Balance turns non-equilibrium signal model filters power splitter | |
| CN109713411A (en) | A kind of micro-strip double-frequency broadband filter | |
| CN104269588B (en) | Small-scale hexagonal three-mode filter based on center branch knot loading | |
| CN105098297A (en) | Compact structure T-type orthogonal mode converter and waveguide duplexer composed of compact structure T-type orthogonal mode converter | |
| CN207474634U (en) | A kind of cavity body filter | |
| CN105552486A (en) | Millimeter wave narrow bandpass filter based on folded substrate integrated waveguide | |
| CN101465458B (en) | Miniaturisation high-performance microstrip bimodule band-pass filter | |
| CN202839922U (en) | High-power wide-band filter device | |
| CN201332134Y (en) | Multiple-circular arc resonant cavity double-mode band-pass filter | |
| CN2831456Y (en) | Duplexer | |
| CN209607892U (en) | A kind of broadband filter with trap characteristic of minor matters loading structure | |
| CN101471469B (en) | Filter containing rectangle resonance pole | |
| CN207719379U (en) | A kind of dielectric waveguide filter negative zero point coupled structure | |
| CN203800892U (en) | High-linearity power amplifier | |
| CN203056063U (en) | X wave-band dual-mode waveguide filter | |
| CN202058839U (en) | Small-sized double-band band pass filter | |
| CN202084620U (en) | Novel band stop structure combiner | |
| CN204103014U (en) | Three split ring double frequency band-pass filters | |
| CN201134486Y (en) | Comb-line cavity filter with resonance column of rectangular type | |
| CN107959096A (en) | A kind of cavity body filter and its method of work | |
| CN204927463U (en) | Broadband bimodulus band pass filter | |
| CN203300775U (en) | Weak coupling cavity filter | |
| CN203644911U (en) | Micro-strip super-wide stop-band low-pass filter | |
| CN201134484Y (en) | Filter device with comb-line cavity | |
| CN207282679U (en) | A kind of compact-sized bimodule band-pass filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180608 Termination date: 20211122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |