CN102176525A - Filtering device with compact structure - Google Patents
Filtering device with compact structure Download PDFInfo
- Publication number
- CN102176525A CN102176525A CN2011100359171A CN201110035917A CN102176525A CN 102176525 A CN102176525 A CN 102176525A CN 2011100359171 A CN2011100359171 A CN 2011100359171A CN 201110035917 A CN201110035917 A CN 201110035917A CN 102176525 A CN102176525 A CN 102176525A
- 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.)
- Pending
Links
Images
Abstract
The invention discloses a filtering device with a compact structure, comprising a metal cavity and a main transmission line in the metal cavity, wherein the main transmission line is a bent strip metal conductor and provided with at least one open-circuit stub which is branched from the main transmission line; the open-circuit stub comprises a strip line and a coaxial line; the strip line is branched from the main transmission line and arranged in the metal cavity; and the coaxial line is connected with the tail end of the strip line and arranged outside the metal cavity. The filtering device has the advantages that the structure is compact, the volume of a filter is reduced maximally and the like.
Description
[technical field]
The invention belongs to field of mobile communication, particularly a kind of ribbon conductor filter of compact conformation.
[technical background]
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 invention is to provide a kind of combining by strip line and coaxial line and form the filter of open stub, the implementation structure compactness reduces the purpose of filter volume.
The object of the present invention is achieved like this:
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 invention 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 principle of the invention figure, and a3, b3, c3 are coaxial line;
Fig. 3 is the structural representation of the specific embodiment of the invention.
[embodiment]
The present invention is described in further detail with concrete case study on implementation below in conjunction with accompanying drawing, but not as the qualification to technical solution of the present invention.
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 invention 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 near the 4th strip line a 1 of input a and the 5th strip line b1 of 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 invention is confined to these explanations.All and structure of the present invention, device etc. are approximate, identical, or conceive for the present invention and to make some technology deduction or replace under the prerequisite, all should be considered as protection scope of the present invention.
Claims (6)
1. the filter of a 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, 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 |
|---|---|---|---|
| CN2011100359171A CN102176525A (en) | 2011-01-30 | 2011-01-30 | Filtering device with compact structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100359171A CN102176525A (en) | 2011-01-30 | 2011-01-30 | Filtering device with compact structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102176525A true CN102176525A (en) | 2011-09-07 |
Family
ID=44519650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100359171A Pending CN102176525A (en) | 2011-01-30 | 2011-01-30 | Filtering device with compact structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102176525A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012167585A1 (en) * | 2011-12-08 | 2012-12-13 | 华为技术有限公司 | Filter |
| CN103311621A (en) * | 2012-03-15 | 2013-09-18 | 成都赛纳赛德科技有限公司 | Strip line high-pass filter based on fine line stub |
| CN103311609A (en) * | 2012-03-15 | 2013-09-18 | 成都赛纳赛德科技有限公司 | Strip line high-pass filter based on spiral stub |
| CN103311617A (en) * | 2012-03-15 | 2013-09-18 | 成都赛纳赛德科技有限公司 | Low-pass filter based on bent metal lines |
| CN103311618A (en) * | 2012-03-15 | 2013-09-18 | 成都赛纳赛德科技有限公司 | Stripline high-pass filter based on folding shorting stubs |
| CN104603941A (en) * | 2012-07-16 | 2015-05-06 | 马维尔国际贸易有限公司 | Overcoming multiple reflections in packages and connectors at high speed broadband signal routing |
| WO2017092382A1 (en) * | 2015-11-30 | 2017-06-08 | 华为技术有限公司 | Interconnect structure |
| CN113113741A (en) * | 2019-12-24 | 2021-07-13 | 华为技术有限公司 | Filter, phase shifter and related device |
| CN113540713A (en) * | 2021-07-09 | 2021-10-22 | 赛莱克斯微系统科技（北京）有限公司 | Miniature filter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5703545A (en) * | 1995-03-17 | 1997-12-30 | Deutsche Thomson-Brandt Gmbh | High frequency filter circuit |
| CN101901950A (en) * | 2010-07-05 | 2010-12-01 | 南京赛格微电子科技有限公司 | Broadband triple-band filter |
-
2011
- 2011-01-30 CN CN2011100359171A patent/CN102176525A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5703545A (en) * | 1995-03-17 | 1997-12-30 | Deutsche Thomson-Brandt Gmbh | High frequency filter circuit |
| CN101901950A (en) * | 2010-07-05 | 2010-12-01 | 南京赛格微电子科技有限公司 | Broadband triple-band filter |
Non-Patent Citations (1)
| Title |
|---|
| 江肖力: "《微带滤波器在EHF频段的应用研究》", 《工程实践及应用技术》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012167585A1 (en) * | 2011-12-08 | 2012-12-13 | 华为技术有限公司 | Filter |
| US9634367B2 (en) | 2011-12-08 | 2017-04-25 | Huawei Technologies Co., Ltd. | Filter |
| CN103311617A (en) * | 2012-03-15 | 2013-09-18 | 成都赛纳赛德科技有限公司 | Low-pass filter based on bent metal lines |
| CN103311609A (en) * | 2012-03-15 | 2013-09-18 | 成都赛纳赛德科技有限公司 | Strip line high-pass filter based on spiral stub |
| CN103311618A (en) * | 2012-03-15 | 2013-09-18 | 成都赛纳赛德科技有限公司 | Stripline high-pass filter based on folding shorting stubs |
| CN103311621A (en) * | 2012-03-15 | 2013-09-18 | 成都赛纳赛德科技有限公司 | Strip line high-pass filter based on fine line stub |
| CN104603941A (en) * | 2012-07-16 | 2015-05-06 | 马维尔国际贸易有限公司 | Overcoming multiple reflections in packages and connectors at high speed broadband signal routing |
| CN104603941B (en) * | 2012-07-16 | 2018-04-24 | 马维尔国际贸易有限公司 | Overcome the multipath reflection in the encapsulation and connector of high-speed wideband signal route |
| WO2017092382A1 (en) * | 2015-11-30 | 2017-06-08 | 华为技术有限公司 | Interconnect structure |
| CN113113741A (en) * | 2019-12-24 | 2021-07-13 | 华为技术有限公司 | Filter, phase shifter and related device |
| CN113113741B (en) * | 2019-12-24 | 2022-06-10 | 华为技术有限公司 | Filter, phase shifter and related device |
| EP4071924A4 (en) * | 2019-12-24 | 2023-01-11 | Huawei Technologies Co., Ltd. | Filter, phase shifter, and related apparatus |
| CN113540713A (en) * | 2021-07-09 | 2021-10-22 | 赛莱克斯微系统科技（北京）有限公司 | Miniature filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102176525A (en) | Filtering device with compact structure | |
| CN103367844B (en) | Multi-branch loading-based three passband high-temperature superconductive filter | |
| CN101976754A (en) | Tri-band Wilkinson power distributor | |
| CN103825075A (en) | T-shaped branch loading built-in antenna combiner | |
| CN104953290A (en) | Wireless communication device and antenna assembly thereof | |
| CN101685899A (en) | High-temperature superconducting frequency shunt with preceding stage coupling unit | |
| CN202084618U (en) | Filter device compact in structure | |
| 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 | |
| CN105870552A (en) | Ultra-wideband microstrip bandpass filter | |
| CN102938640B (en) | A kind of double frequency impedance matching network | |
| CN104282970B (en) | A kind of DBR filters and DBR duplexers | |
| CN104659453B (en) | A kind of broadband line combiner | |
| CN205248407U (en) | Waveguide filter and wave band transmitter | |
| CN203760613U (en) | T type stub-loaded antenna built-in combiner | |
| CN210489790U (en) | Alternating short circuit branch high-pass filter | |
| CN205303635U (en) | Miniaturized ultrashort wave multiplexer | |
| CN202550044U (en) | Band-stop filter based on coaxial cavities | |
| CN206564316U (en) | A kind of POI combiners module | |
| CN201682465U (en) | Miniaturized multiband combiner | |
| CN202977667U (en) | High out-of-band rejection ultra-wideband filter | |
| CN204732505U (en) | For the capacitive coupling structure of metallic cavity filter product | |
| CN204333203U (en) | Waveguide-microbelt coupler | |
| CN212676440U (en) | Low-frequency transparent transmission type 5G combiner | |
| CN201319594Y (en) | Communication network power equalizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110907 |