CN202084618U - Filter device compact in structure - Google Patents
Filter device compact in structure Download PDFInfo
- Publication number
- CN202084618U CN202084618U CN2011200361478U CN201120036147U CN202084618U CN 202084618 U CN202084618 U CN 202084618U CN 2011200361478 U CN2011200361478 U CN 2011200361478U CN 201120036147 U CN201120036147 U CN 201120036147U CN 202084618 U CN202084618 U CN 202084618U
- Authority
- CN
- China
- Prior art keywords
- line
- coaxial line
- main transmission
- filter
- transmission line
- 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 - Lifetime
Links
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The utility model discloses a filter device compact in structure, which comprises a body. The body comprises a metal cavity and a main transmission line arranged therein. The main transmission line is a banded bent metal conductor, an open circuit stub line is branched to the main transmission line further and comprises a banded line and a coaxial line, the banded line is branched to the main transmission line and disposed in the metal cavity, and the coaxial line is connected to the tail end of the banded line and disposed outside the metal cavity. The filter device has the advantages that the structure is compact, the size of the filter is reduced greatly and the like.
Description
[technical field]
The utility model belongs to field of mobile communication, particularly a kind of ribbon conductor filter of compact conformation.
[background technology]
In radiotechnics equipment, for example in the mobile wireless electrical domain, filter is a two-port network, and its characteristic by providing signal to transmit and provide decay in the filter passband frequency in stopband is in order to somewhere frequency response in the control system.Especially the antenna of transmit-receive sharing is for separting transomission and received signal, and suitable filtration frequency is necessary, guarantee that the signal of launching can not transmit towards the direction of receiver, and the signal that receives only transmits to receiver.
In modern mobile base station antenna system, the improvement of antenna performance and the optimization of installation volume are particularly outstanding, and then the volume size of each parts of antenna inside is further compressed, and the layout of aerial network is had higher requirement.
Tradition adopts the ribbon conductor filter of the transmission line structure that periodically loads, and loaded segment is because the restriction of wavelength can take the bulk in the cavity usually in a large number, even adopt the design of bending also to be difficult to further reduce volume.For reaching the frequency response in the whole working range, often also need periodically repeatedly iteration loaded segment, the response of single impedance operator in operating frequency range of loaded segment also has many limitations.
The space in the shared cavity of stub has not only been saved in the introducing of coaxial line greatly, and the also effectively length of regulating stub that played reaches the effect of impedance matching, makes the adjustment of impedance matching more convenient.
[summary of the invention]
The purpose of this utility model provides a kind of combining by strip line and coaxial line and forms the filter of open stub, and the implementation structure compactness reduces the purpose of filter volume.
The purpose of this utility model is achieved in that
A kind of filter of compact conformation, its main body comprises a metallic cavity and is located at the interior main transmission line of this metallic cavity, this main transmission line is the metallic conductor of a banded bending, also be provided with the open stub of at least one branch in described main transmission line, described open stub further comprises branch in described main transmission line and place strip line in the described metallic cavity, and is connected in described stripline end and places the outer coaxial line of described metallic cavity.
One banded bending plain conductor is set in metallic cavity, and metallic conductor is as the main transmission line of filter.Open stub is divided into two parts, and branch's coaxial line of opening a way outside the end of the strip line of main transmission line and metallic cavity is connected, and forms the stub of filter.Main transmission line top set stripline end is guided into outside the metallic cavity, stripline end is connected with coaxial line, coaxial line places the cavity outside, each coaxial line length can not wait, and each coaxial line characteristic impedance can not wait yet, and can be applied to adjust the electric property parameter such as inhibition, standing wave of filter flexibly.
The conventional band line cycle is loaded on branch stubs loading place, and part replaces with coaxial line and loads, and has the beneficial effect of the spatial volume in the effective saving metallic cavity.
As the improvement of technique scheme, further technical scheme of the present utility model is as follows:
Further, above-mentioned open stub has three, by first strip line of branch in described main transmission line, second strip line, the 3rd strip line and first coaxial line that is connected to this first stripline end, be connected in second coaxial line of this second stripline end, the triax that is connected in the 3rd stripline end is formed.
Further, above-mentioned main transmission line comprises an input and an output, and this input and output are connected with the 4th coaxial line and the 5th coaxial line respectively, and the 4th coaxial line and the 5th coaxial line place the outside of described metallic cavity.
Further, the first above-mentioned coaxial line, second coaxial line, being uneven in length of triax.
Further, the first above-mentioned coaxial line, second coaxial line, the characteristic impedance of triax does not wait.
Further, above-mentioned strip line and coaxial line welding are fixing.
[description of drawings]
Fig. 1 is a conventional band line periodic structure schematic diagram;
Fig. 2 is the utility model schematic diagram, and a3, b3, c3 are coaxial line;
Fig. 3 is the structural representation of the utility model embodiment.
[embodiment]
The utility model is described in further detail with concrete case study on implementation below in conjunction with accompanying drawing, but not as the qualification to technical solutions of the utility model.
As shown in Figure 1, the open stub L1 of traditional filter, L2 and L3 adopt strip lines configuration fully, need occupy the big quantity space in the metallic cavity.
As shown in Figure 2, the scheme that open stub of the present utility model takes strip line and coaxial line to combine, wherein coaxial line places the outside of metallic cavity, so greatly the saving of degree the space utilization of metallic cavity.
As shown in Figure 3, the metallic cavity of present embodiment comprises base m and loam cake n, main transmission line is divided into the 5th strip line b1 near the 4th strip line a1 of input a and close output b, this main transmission line is the metallic conductor of a banded bending, input a and output b are connected with the 4th coaxial line 4a and the 5th coaxial line 4b respectively, and the 4th coaxial line 4a and the 5th coaxial line 4b place the outside of metallic cavity.
Also be provided with three branches in the open stub of main transmission line, these three open stub are labeled as L1, L2 and L3 respectively, by the first strip line a2 of branch in main transmission line, the second strip line b2, the 3rd strip line c2 and the first coaxial line a3 that is connected to the terminal c of this first strip line a2, be connected in the second coaxial line b3 of the terminal d of this second strip line b2, the triax c3 that is connected in the terminal e of the 3rd strip line c2 forms
One banded bending plain conductor is set in metallic cavity, and metallic conductor is as the main transmission line of filter.Open stub is divided into two parts, and branch's coaxial line of opening a way outside the end of the strip line of main transmission line and metallic cavity is connected, and forms the stub of filter.Main transmission line top set stripline end is guided into outside the metallic cavity, stripline end is connected with coaxial line, coaxial line places the cavity outside, each coaxial line length can not wait, and each coaxial line characteristic impedance can not wait yet, and can be applied to adjust the electric property parameter such as inhibition, standing wave of filter flexibly.
The conventional band line cycle is loaded on branch stubs loading place, and part replaces with coaxial line and loads, and has the beneficial effect of the spatial volume in the effective saving metallic cavity.
The strip line of present embodiment and coaxial line welding are fixing.
Of particular note: be a kind of execution mode that provides in conjunction with particular content as mentioned above, can not assert that concrete enforcement of the present utility model is confined to these explanations.All approximate, identical with the utility model structure, device etc., or, all should be considered as protection range of the present utility model for making some technology deduction or replace under the utility model design prerequisite.
Claims (6)
1. the filter of a compact conformation, its main body comprise a metallic cavity and are located at main transmission line in this metallic cavity that this main transmission line is the metallic conductor of a banded bending, it is characterized in that:
Also be provided with the open stub of at least one branch in described main transmission line, described open stub further comprises branch in described main transmission line and place strip line in the described metallic cavity, and is connected in described stripline end and places the outer coaxial line of described metallic cavity.
2. the filter of a kind of compact conformation according to claim 1, it is characterized in that: described open stub has three, by first strip line of branch in described main transmission line, second strip line, the 3rd strip line and first coaxial line that is connected to this first stripline end, be connected in second coaxial line of this second stripline end, the triax that is connected in the 3rd stripline end is formed.
3. the filter of a kind of compact conformation according to claim 1 and 2, it is characterized in that: described main transmission line comprises an input and an output, this input and output are connected with the 4th coaxial line and the 5th coaxial line respectively, and the 4th coaxial line and the 5th coaxial line place the outside of described metallic cavity.
4. the filter of a kind of compact conformation according to claim 2 is characterized in that: described first coaxial line, second coaxial line, being uneven in length of triax.
5. the filter of a kind of compact conformation according to claim 2 is characterized in that: described first coaxial line, and second coaxial line, the characteristic impedance of triax does not wait.
6. the filter of a kind of compact conformation according to claim 1 is characterized in that: described strip line and coaxial line welding are fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200361478U CN202084618U (en) | 2011-01-30 | 2011-01-30 | Filter device compact in structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200361478U CN202084618U (en) | 2011-01-30 | 2011-01-30 | Filter device compact in structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202084618U true CN202084618U (en) | 2011-12-21 |
Family
ID=45345238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200361478U Expired - Lifetime CN202084618U (en) | 2011-01-30 | 2011-01-30 | Filter device compact in structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202084618U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014121754A1 (en) * | 2013-02-08 | 2014-08-14 | 华为技术有限公司 | Phase shifter with filter element, filter element and antenna |
-
2011
- 2011-01-30 CN CN2011200361478U patent/CN202084618U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014121754A1 (en) * | 2013-02-08 | 2014-08-14 | 华为技术有限公司 | Phase shifter with filter element, filter element and antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102176525A (en) | Filtering device with compact structure | |
| CN101976754B (en) | Tri-band Wilkinson power distributor | |
| CN103633400B (en) | A kind of micro-strip duplexer based on electromagnetism hybrid coupled | |
| CN103367844B (en) | Multi-branch loading-based three passband high-temperature superconductive filter | |
| CN219457995U (en) | Bidirectional coupler and radio frequency chip | |
| CN103825075A (en) | T-shaped branch loading built-in antenna combiner | |
| CN202084618U (en) | Filter device compact in structure | |
| CN104953290A (en) | Wireless communication device and antenna assembly thereof | |
| CN101685899A (en) | High-temperature superconducting frequency shunt with preceding stage coupling unit | |
| CN102938640B (en) | A kind of double frequency impedance matching network | |
| CN207409639U (en) | A kind of three frequency four-port microstrip combiner of ultra wide band for mobile radio system | |
| CN204167453U (en) | The mobile 4G mixer that a kind of China Mobile is special | |
| CN104282970A (en) | DBR filter and DBR duplexer | |
| CN201060919Y (en) | Arbitrarily dual-frequency band 3dB branch directional coupler | |
| CN216773507U (en) | Multi-band antenna and terminal | |
| CN203760613U (en) | T type stub-loaded antenna built-in combiner | |
| CN104659453A (en) | Wideband line combiner | |
| CN203883094U (en) | Micro-strip diplexer based on electromagnetic mixed coupling | |
| CN102623776A (en) | Coaxial cavity-based rejection filter | |
| CN202550044U (en) | Band-stop filter based on coaxial cavities | |
| CN206564316U (en) | A kind of POI combiners module | |
| CN201682465U (en) | Miniaturized multiband combiner | |
| CN204333203U (en) | Waveguide-microbelt coupler | |
| CN2338882Y (en) | Combination type suppressor for anti-radio interference | |
| CN201319594Y (en) | Communication network power equalizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111221 |
|
| CX01 | Expiry of patent term |