CN102354778A - Elliptic function low-path filtering path and communication cavity device adopting same - Google Patents
Elliptic function low-path filtering path and communication cavity device adopting same Download PDFInfo
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- CN102354778A CN102354778A CN201110247335XA CN201110247335A CN102354778A CN 102354778 A CN102354778 A CN 102354778A CN 201110247335X A CN201110247335X A CN 201110247335XA CN 201110247335 A CN201110247335 A CN 201110247335A CN 102354778 A CN102354778 A CN 102354778A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
- H01P1/2084—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with dielectric resonators
- H01P1/2086—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with dielectric resonators multimode
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Abstract
The invention mainly discloses an elliptic function low-path filtering path, which is arranged in a metal cavity. The metal cavity is provided with a plurality of sub-cavities which are communicated in turn. Resonant columns are arranged between every two adjacent sub-cavities. A conductor rod is arranged above the resonance columns. Through holes are formed corresponding to each resonance column on the conductor rod. Each resonance column is provided with a tuning threaded rod which runs through a corresponding through hole and penetrates into the resonance column to form capacitive coupling with the resonance column. The two ends of the conductor rod are provided with a connecting port respectively. The elliptic function low-pass filtering path provided by the invention has high electrical indexes and a novel and unique structure, and is convenient to machine and produce in batches. A communication cavity device formed by the elliptic function low-pass filtering path can generate relatively stronger restraints within relatively wider out-of-band band limits, thereby meeting the requirement of high isolation among communication systems.
Description
[technical field]
The present invention relates to a kind of communication cavity devices that is used for signal of communication is carried out low-pass filtering, be specifically related to a kind of elliptic function type low-pass filtering path.
[background technology]
Along with the development of the integration of three networks and launching of LTE frequency range, compare traditional frequency range, new frequency range is just towards lower and higher both direction development.Along with the introducing of new standard or system, market is more and more higher to the requirement of passive device.
For low pass filter; Traditional realization method generally is Chebyshev's type; For example common sugarcoated haws shape low pass filter; Its advantage be simple in structure, be easy to realize but the shortcoming precision that to be band outer descends slowly, outer the inhibitions degree consistency low, filtering characteristic of band depends on processing and assembles.Such low pass filter is usually used in suppressing outside the far-end band, and generally speaking, it can't satisfy the requirement of the high-isolation between real system.
[summary of the invention]
Therefore, primary and foremost purpose of the present invention is to overcome above-mentioned deficiency, provide a kind of with outer descend faster, the outer inhibition degree of band is higher, be convenient to the elliptic function type low-pass filtering path processing and produce.
Another object of the present invention is to provide communication cavity devices such as a kind of mixer/duplexer/filter that comprises said elliptic function type low-pass filtering path.
For realizing the object of the invention, the present invention adopts following technical scheme:
Elliptic function type low-pass filtering path of the present invention; Be arranged in the metallic cavity; Said metallic cavity is provided with a plurality of sub-chambeies that are connected in turn; Be provided with the resonance post between adjacent two subcavities; Resonance post top is provided with stub; Corresponding each the resonance post place of stub is provided with through hole, and each resonance post all has a tuning screw rod to pass corresponding through hole and gos deep into this resonance post so that tuning screw rod and this resonance post capacitive are coupled, and the stub two ends form two connectivity ports respectively.
Mixer/duplexer of the present invention/filters etc., it comprises aforesaid elliptic function type low-pass filtering path.
Compared with prior art; The present invention has following advantage: elliptic function type low-pass filtering path of the present invention; Be on the basis of traditional sugarcoated haws shape low pass filter; The harmonic oscillator that its Low ESR is partly replaced an equivalent inductance capacitances in series is incorporated primary path into; The equivalent inductance of this harmonic oscillator is realized that by the high impedance that forms between resonance post and the chamber wall equivalent capacity is realized by the coupling of the slit between tuning screw rod and the resonance column wall.The communication cavity devices of Xing Chenging like this, band is outer descend very fast, and can the stronger inhibition of generation in the outer very wide band limits of band, thus satisfy the requirement of the high-isolation between communication system; Simultaneously, have advantages such as the loss of insertion is little, standing-wave ratio is little, passive intermodulation is low, power capacity is big; In addition, the novel structure uniqueness is uncomplicated, is easy to processing, and is low to the required precision of processing and assembling, has extraordinary consistency, is convenient to produce.
[description of drawings]
Fig. 1 is a sketch map after the assembling of elliptic function type low-pass filtering path of the present invention;
Fig. 2 more at large discloses the assembled relation between each parts on the basis of Fig. 1;
Fig. 3 further discloses the assembled relation between resonance post, stub, medium sleeve, the tuning screw rod on the basis of aforementioned each figure.
[embodiment]
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment:
See also Fig. 1; Elliptic function type low-pass filtering path of the present invention; Design forms in a metallic cavity 1; Mainly comprise the many subcavities 11-15 that is formed in the metallic cavity 1; Be arranged on the spine 10 of the middle part between the adjacent two subcavities 11-15 and be erected at the resonance post 32 on the spine 10; In metallic cavity 1, traverse metallic cavity 1 longitudinally and place the stub 4 of resonance post 32 tops; Pass a plurality of tuning screw rod 31 that stub 4 and each resonance post 32 capacitive are of coupled connections; And be connected in formed two connectivity ports 21,22, stub 4 two ends etc.Certainly, metallic cavity 1 top should be provided with lid, and is because of belonging to common practise, not shown so omit.
Please further combine Fig. 2 and Fig. 3, so that more be expressly understood the concrete structure of present embodiment.
Said many subcavities 11-15 arranges along same direction (straight line) basically in turn; The design that the spatial volume size of sub-chamber 11-15 depends on electrical performance indexes realizes; Preferable; On this direction head and the tail two subcavities 11 relative with 15 spatial volume less; The sub-chamber 12-14 of all the other sections of mediating has identical or akin spatial volume basically, can be considered etc. big.
The junction of adjacent two sub-chamber 11-15 that are connected is fenestration, and at the position of windowing, metallic cavity 1 diapire is provided with the spine 10 that exceeds this diapire, in this spine 10, erects a described resonance post 32 is set.Different spines 10 adapts to different frequency ranges and has different height.Formed a plurality of resonance posts 32 of arranging along same straight line thus, these resonance posts 32 have formed the equivalent inductance in the aforementioned equivalent inductance capacitances in series harmonic oscillator with fenestration.
Described stub 4 two ends are connected with the inner wire (not shown) of two connectivity ports 21,22 respectively, because of two connectivity ports 21,22 are fixed on the metallic cavity 1, stub 4 also therefore be fixed on each resonance post 32 the top.Stub 4 is shape linearly, and its main body presents a less diameter, and its position at said each the resonance post 32 of correspondence is provided with partial section 40, and the diameter of this partial section 40 is then bigger.The diameter of partial section 40 is to pass through for tuning screw rod 31 for through hole 41 is set greater than the diameter of main body.
In order to make each tuning screw rod 31 pass through radially being coupled of stub 4 with corresponding resonance post 32 realization capacitives; Partial section 40 places bigger at each diameter of said stub 4 radially are provided with the through hole 41 with screw thread; And resonance post 32 is provided with the slotted eye 320 that supplies tuning screw rod 31 axially to get into.Thus, after a tuning screw rod 31 passes a through hole 41 on the stub 4,, can realize that this tuning screw rod 31 and the capacitive between the resonance post 32 accordingly are coupled deeply with the slotted eye 320 of this corresponding resonance post 32 in through hole 41 positions.In order to ensure the insulation between tuning screw rod 31 and the resonance post 32, the medium sleeve of processing by polytetrafluoroethylene or other insulating material in tuning screw rod 31 peripheries sheathed one 30.
Can find out by above explanation; A plurality of tuning screw rods 31 pass respectively on the stub 4 behind corresponding a plurality of through holes 41; With the corresponding resonance post 32 capacitives coupling in position, this capacitive coupling is the equivalent capacity in the aforementioned equivalent inductance capacitances in series harmonic oscillator respectively.
Like this, the series connection of corresponding equivalent inductance and equivalent capacity has just constituted the equivalent series harmonic oscillator.A plurality of equivalent series harmonic oscillators and then match make the low-pass filtering path can be in the outer very wide band limits of band the higher inhibition degree (more than the 70dB) of (relative bandwidth can reach 45%) generation.
In another not shown embodiment of the present invention, the arrangement of said many subcavities 11-15 can be on same direction (straight line), and for example, the orientation of many subcavities 11-15 forms the right angle.As adaptive change, said stub 4 also need be designed to bending-like.It is thus clear that, suitably change the structure of individual component of the present invention, still do not influence the realization of technique effect of the present invention.
Elliptic function type low-pass filtering path of the present invention is applied in mixer, duplexer or the filter, can brings into play the performance of the high inhibition degree of its high bandwidth better.
Although the present invention only provides above embodiment; But; Those skilled in the art are after reading over this specification; In conjunction with common practise; Should be able to associate more embodiment; But such embodiment is the spirit of unconventional claim of the present invention not, any type ofly is equal to replacement or simple modification all should be considered as the included embodiment by the present invention.
Claims (9)
1. elliptic function type low-pass filtering path; Be arranged in the metallic cavity; It is characterized in that: said metallic cavity is provided with a plurality of sub-chambeies that are connected in turn; Be provided with the resonance post between adjacent two subcavities; Resonance post top is provided with stub; Corresponding each the resonance post place of stub is provided with through hole, and each resonance post all has a tuning screw rod to pass corresponding through hole and gos deep into this resonance post so that tuning screw rod and this resonance post capacitive are coupled, and the stub two ends form two connectivity ports respectively.
2. elliptic function type low-pass filtering path according to claim 1 is characterized in that, said many subcavities are along arranging the corresponding linearly shape of said stub on the same direction.
3. elliptic function type low-pass filtering path according to claim 1 is characterized in that said many subcavities are not arranged on same direction, the corresponding bending-like that is of said stub.
4. according to any described elliptic function type low-pass filtering path in the claim 1 to 3, it is characterized in that, be provided with the medium sleeve between said tuning screw rod and the resonance post.
5. according to any described elliptic function type low-pass filtering path in the claim 1 to 3, it is characterized in that the diameter of the partial section around the through hole 41 of said stub is greater than the diameter of stub main body.
6. according to any described elliptic function type low-pass filtering path in the claim 1 to 3, it is characterized in that, be provided with spine between the diapire of said resonance post and metallic cavity.
7. elliptic function type low-pass filtering path according to claim 6 is characterized in that, the height of said each pairing each spine of resonance post is different.
8. according to any described elliptic function type low-pass filtering path in the claim 1 to 3, it is characterized in that in said many subcavities, all the other the sub-chambeies between head and the tail two subcavities are impartial big.
9. mixer/duplexer/filter is characterized in that, it comprises like any described elliptic function type low-pass filtering path in the claim 1 to 8.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110247335.XA CN102354778B (en) | 2011-08-24 | 2011-08-24 | Elliptic function low-path filtering path and communication cavity device adopting same |
| PCT/CN2012/079075 WO2013026339A1 (en) | 2011-08-24 | 2012-07-24 | Elliptic function-type low-pass filter and communication cavity component employing same |
| BR112014004010A BR112014004010A2 (en) | 2011-08-24 | 2012-07-24 | low-pass filter path of elliptic function and communication cavity component using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110247335.XA CN102354778B (en) | 2011-08-24 | 2011-08-24 | Elliptic function low-path filtering path and communication cavity device adopting same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102354778A true CN102354778A (en) | 2012-02-15 |
| CN102354778B CN102354778B (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110247335.XA Active CN102354778B (en) | 2011-08-24 | 2011-08-24 | Elliptic function low-path filtering path and communication cavity device adopting same |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102354778B (en) |
| BR (1) | BR112014004010A2 (en) |
| WO (1) | WO2013026339A1 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683779A (en) * | 2012-05-18 | 2012-09-19 | 京信通信***（中国）有限公司 | Communication cavity device and elliptic function type high-pass filtering channel thereof |
| CN102683782A (en) * | 2012-04-23 | 2012-09-19 | 安徽科瑞达通信科技有限公司 | High-broadband quadruple two-port combiner for telecommunication |
| CN102683776A (en) * | 2012-04-23 | 2012-09-19 | 安徽科瑞达通信科技有限公司 | EGSM duplex filtering module with connection band |
| WO2013026339A1 (en) * | 2011-08-24 | 2013-02-28 | 京信通信***（中国）有限公司 | Elliptic function-type low-pass filter and communication cavity component employing same |
| CN103531873A (en) * | 2012-07-03 | 2014-01-22 | 成都市宏山科技有限公司 | Waveguide band-pass filter |
| CN103972615A (en) * | 2013-01-29 | 2014-08-06 | 京信通信***（中国）有限公司 | Novel low pass filtering pathway and communication cavity device with same |
| CN105514551A (en) * | 2014-10-20 | 2016-04-20 | 中兴通讯股份有限公司 | Resonator and cavity filter |
| WO2016106707A1 (en) * | 2014-12-31 | 2016-07-07 | 深圳市大富科技股份有限公司 | Tuning screw and manufacturing method therefor, cavity filter, and communication device |
| CN107508020A (en) * | 2017-09-25 | 2017-12-22 | 江苏贝孚德通讯科技股份有限公司 | Resonator and elliptic function type low-pass filter |
| WO2018107633A1 (en) * | 2016-12-14 | 2018-06-21 | 京信通信技术(广州)有限公司 | High-performance band-stop filter and communications cavity device thereof |
| CN110416676A (en) * | 2019-08-01 | 2019-11-05 | 京信通信技术(广州)有限公司 | Combiner |
| CN111384488A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric resonator, dielectric filter and communication equipment |
| CN112599943A (en) * | 2020-11-16 | 2021-04-02 | 武汉凡谷电子技术股份有限公司 | Novel stamping and rolling low pass and processing technology thereof |
| CN113131148A (en) * | 2019-12-31 | 2021-07-16 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019213913A1 (en) * | 2018-05-10 | 2019-11-14 | 深圳市大富科技股份有限公司 | Cavity filter, filter cavity, and manufacturing method therefor |
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| CN201181730Y (en) * | 2008-04-15 | 2009-01-14 | 华南理工大学 | Controllable electromagnetic mixed coupling coaxial cavity wave filter |
| CN102354778B (en) * | 2011-08-24 | 2014-03-26 | 京信通信***（中国）有限公司 | Elliptic function low-path filtering path and communication cavity device adopting same |
-
2011
- 2011-08-24 CN CN201110247335.XA patent/CN102354778B/en active Active
-
2012
- 2012-07-24 BR BR112014004010A patent/BR112014004010A2/en not_active IP Right Cessation
- 2012-07-24 WO PCT/CN2012/079075 patent/WO2013026339A1/en active Application Filing
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| JP2004289205A (en) * | 2003-03-19 | 2004-10-14 | Mitsubishi Electric Corp | Dual-mode filter |
| CN2754227Y (en) * | 2004-12-10 | 2006-01-25 | 深圳市微通科技有限公司 | Coaxial cavity semi-integrated total-parameter microwave band-stop filter |
| CN101931113A (en) * | 2009-06-25 | 2010-12-29 | 泰科电子(上海)有限公司 | Low-pass filter |
| CN101630766A (en) * | 2009-07-23 | 2010-01-20 | 西安空间无线电技术研究所 | Antiphase coupling elliptic function spiral wave filter |
| CN202196845U (en) * | 2011-08-24 | 2012-04-18 | 京信通信***（中国）有限公司 | Elliptic function type low pass filtering access and communication cavity body device using same |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013026339A1 (en) * | 2011-08-24 | 2013-02-28 | 京信通信***（中国）有限公司 | Elliptic function-type low-pass filter and communication cavity component employing same |
| CN102683782A (en) * | 2012-04-23 | 2012-09-19 | 安徽科瑞达通信科技有限公司 | High-broadband quadruple two-port combiner for telecommunication |
| CN102683776A (en) * | 2012-04-23 | 2012-09-19 | 安徽科瑞达通信科技有限公司 | EGSM duplex filtering module with connection band |
| CN102683779A (en) * | 2012-05-18 | 2012-09-19 | 京信通信***（中国）有限公司 | Communication cavity device and elliptic function type high-pass filtering channel thereof |
| CN102683779B (en) * | 2012-05-18 | 2014-09-10 | 京信通信***（中国）有限公司 | Communication cavity device and elliptic function type high-pass filtering channel thereof |
| CN103531873A (en) * | 2012-07-03 | 2014-01-22 | 成都市宏山科技有限公司 | Waveguide band-pass filter |
| CN103972615A (en) * | 2013-01-29 | 2014-08-06 | 京信通信***（中国）有限公司 | Novel low pass filtering pathway and communication cavity device with same |
| WO2014117482A1 (en) * | 2013-01-29 | 2014-08-07 | 京信通信***（中国）有限公司 | Novel low-pass filtering path and communication cavity device using same |
| CN103972615B (en) * | 2013-01-29 | 2016-07-06 | 京信通信***（中国）有限公司 | Novel low pass filtering access and adopt its communication cavity device |
| CN105514551A (en) * | 2014-10-20 | 2016-04-20 | 中兴通讯股份有限公司 | Resonator and cavity filter |
| WO2016106707A1 (en) * | 2014-12-31 | 2016-07-07 | 深圳市大富科技股份有限公司 | Tuning screw and manufacturing method therefor, cavity filter, and communication device |
| CN107112614A (en) * | 2014-12-31 | 2017-08-29 | 深圳市大富科技股份有限公司 | Tuning screw and its manufacture method, cavity body filter, communication equipment |
| WO2018107633A1 (en) * | 2016-12-14 | 2018-06-21 | 京信通信技术(广州)有限公司 | High-performance band-stop filter and communications cavity device thereof |
| CN107508020A (en) * | 2017-09-25 | 2017-12-22 | 江苏贝孚德通讯科技股份有限公司 | Resonator and elliptic function type low-pass filter |
| CN107508020B (en) * | 2017-09-25 | 2019-11-29 | 江苏贝孚德通讯科技股份有限公司 | Resonator and Elliptic Function Type low-pass filter |
| CN111384488A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric resonator, dielectric filter and communication equipment |
| CN110416676A (en) * | 2019-08-01 | 2019-11-05 | 京信通信技术(广州)有限公司 | Combiner |
| CN110416676B (en) * | 2019-08-01 | 2024-02-27 | 京信通信技术(广州)有限公司 | Combiner device |
| CN113131148A (en) * | 2019-12-31 | 2021-07-16 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
| CN112599943A (en) * | 2020-11-16 | 2021-04-02 | 武汉凡谷电子技术股份有限公司 | Novel stamping and rolling low pass and processing technology thereof |
| CN112599943B (en) * | 2020-11-16 | 2022-02-11 | 武汉凡谷电子技术股份有限公司 | Novel stamping and rolling low pass and processing technology thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013026339A1 (en) | 2013-02-28 |
| BR112014004010A2 (en) | 2017-04-04 |
| CN102354778B (en) | 2014-03-26 |
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Effective date of registration: 20200115 Address after: 510730 No. 6, layered Road, Guangzhou economic and Technological Development Zone, Guangdong Patentee after: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Address before: 510663 Guangzhou Science City, Guangdong Shenzhou Road, No. 10 Patentee before: COMBA TELECOM SYSTEMS (CHINA) Ltd. |
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Effective date of registration: 20230804 Address after: 510730, No. 6, Jin Lu, Guangzhou economic and Technological Development Zone, Guangdong, Guangzhou Patentee after: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Patentee after: COMBA TELECOM SYSTEMS (GUANGZHOU) Ltd. Address before: 510730 No. 6, layered Road, Guangzhou economic and Technological Development Zone, Guangdong Patentee before: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. |