CN102354778B - 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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- CN102354778B CN102354778B CN201110247335.XA CN201110247335A CN102354778B CN 102354778 B CN102354778 B CN 102354778B CN 201110247335 A CN201110247335 A CN 201110247335A CN 102354778 B CN102354778 B CN 102354778B
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- elliptic function
- pass filtering
- low pass
- resonant column
- function type
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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
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 ofly for signal of communication being carried out to the communication cavity device of low-pass filtering, be specifically related to a kind of Elliptic Function Type low pass filtering access.
[background technology]
Along with the development of the integration of three networks and enabling 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 implementation is generally Chebyshev's type, common sugarcoated haws shape low pass filter for example, its advantage be simple in structure, be easy to realize but the shortcoming precision that to be band outer declines slowly, Out-of-band rejection degree consistency low, filtering characteristic depends on processing and assembling.Such low pass filter is usually used in suppressing outside far-end band, and generally, it cannot meet 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 decline faster, Out-of-band rejection degree Elliptic Function Type low pass filtering access higher, that be convenient to processing and produce.
Another object of the present invention is to provide a kind of communication cavity devices such as mixer/duplexer/filter that comprise described Elliptic Function Type low pass filtering access.
For realizing object of the present invention, the present invention adopts following technical scheme:
Elliptic Function Type low pass filtering access of the present invention, be arranged in metallic cavity, described metallic cavity is provided with a plurality of sub-chambeies that are connected in turn, between adjacent two sub-chambeies, be provided with resonant column, resonant column top is provided with stub, corresponding each the resonant column place of stub is provided with through hole, and each resonant column all has a tuning screw through corresponding through hole and gos deep into this resonant column so that tuning screw and this resonant column capacitive coupling, and stub two ends form respectively two connectivity ports.
Mixer/duplexer/filters of the present invention etc., it comprises aforesaid Elliptic Function Type low pass filtering access.
Compared with prior art, tool of the present invention has the following advantages: Elliptic Function Type low pass filtering access of the present invention, on the basis of traditional sugarcoated haws shape low pass filter, the harmonic oscillator that its Low ESR is partly replaced to an equivalent inductance capacitances in series is incorporated to primary path, the equivalent inductance of this harmonic oscillator is realized by the high impedance forming between resonant column and chamber wall, and equivalent capacity is realized by the slot-coupled between tuning screw and resonant column inwall.The communication cavity device forming like this, band is outer to decline comparatively fast, and can in band limits very wide outside band, produce stronger inhibition, thereby meets the requirement of the high-isolation between communication system; Meanwhile, there is the advantages such as insertion loss is little, standing-wave ratio is little, passive intermodulation is low, power capacity is large; In addition, novel structure uniqueness is uncomplicated, is easy to processing, low to the required precision of processing and assembling, has extraordinary consistency, is convenient to produce.
[accompanying drawing explanation]
Fig. 1 is schematic diagram after the assembling of Elliptic Function Type low pass filtering access of the present invention;
Fig. 2, on the basis of Fig. 1, more at large discloses the assembled relation between each parts;
Fig. 3, on the basis of aforementioned each figure, further discloses the assembled relation between resonant column, stub, medium sleeve, tuning screw.
[embodiment]
Below in conjunction with drawings and Examples, the present invention is further illustrated:
Refer to Fig. 1, Elliptic Function Type low pass filtering access of the present invention, design forming in a metallic cavity 1, mainly comprise a plurality of sub-chamber 11-15 being formed in metallic cavity 1, be arranged on the spine 10 of the middle part between adjacent two sub-chamber 11-15 and be erected at the resonant column 32 on spine 10, in metallic cavity 1, traverse metallic cavity 1 longitudinally and be placed in the stub 4 of resonant column 32 tops, a plurality of tuning screws 31 that are connected with each resonant column 32 capacitive couplings through stub 4, and be connected in formed two connectivity ports 21, stub 4 two ends, 22 etc.Certainly, metallic cavity 1 top should be provided with lid, because belonging to common practise, not shown therefore omitted.
Please further combined with Fig. 2 and Fig. 3, to more clearly understand the concrete structure of the present embodiment.
Described a plurality of sub-chamber 11-15 substantially in the same direction (straight line) arranges in turn, the spatial volume Size-dependent of sub-chamber 11-15 is realized in the design of electrical performance indexes, preferably, except the party upwards two sub-chambeies 11 of head and the tail and 15 spatial volume relatively little, the sub-chamber 12-14 of all the other sections of mediating has identical or akin spatial volume substantially, can be considered etc. large.
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 Gai spine 10, erects the resonant column 32 described in is set.Different spines 10 adapts to different frequency ranges and has different height.Formed thus a plurality of resonant columns of arranging along same straight line 32, these resonant columns 32 have formed the equivalent inductance in aforementioned equivalent inductance capacitances in series harmonic oscillator together with fenestration.
Described stub 4 two ends are connected with the inner wire (not shown) of two connectivity ports 21,22 respectively, because two connectivity ports 21,22 are fixed in metallic cavity 1, stub 4 therefore be also fixed on each resonant column 32 top.Stub 4 is linearly, and its main body presents a less diameter, and its position at corresponding described each resonant column 32 is provided with partial section 40, and the diameter of this partial section 40 is larger.The diameter of partial section 40 is greater than the diameter of main body, is to pass through for tuning screw 31 for through hole 41 is set.
For what make that each tuning screw 31 passes through stub 4, radially realize capacitive coupling with corresponding resonant column 32, at each diameter of described stub 4, larger partial section 40 places radially arrange the threaded through hole 41 of tool, and resonant column 32 is provided with the slotted eye 320 axially entering for tuning screw 31.Thus, tuning screw 31 through a through hole 41 on stub 4 after, deeply with the slotted eye 320 of these through hole 41 corresponding resonant columns 32 in position, can realize this tuning screw 31 and the capacitive coupling between resonant column 32 accordingly.In order to ensure the insulation between tuning screw 31 and resonant column 32, at the peripheral sheathed one medium sleeve 30 of being made by polytetrafluoroethylene or other insulating material of tuning screw 31.
By above explanation, can be found out, a plurality of tuning screws 31 are respectively through after corresponding a plurality of through holes 41 on stub 4, resonant column 32 capacitive couplings corresponding with position respectively, this capacitive coupling is the equivalent capacity in aforementioned equivalent inductance capacitances in series harmonic oscillator.
Like this, corresponding equivalent inductance and the series connection of equivalent capacity have just formed equivalent series harmonic oscillator.A plurality of equivalent series harmonic oscillators and then match make low pass filtering access can be in the outer very wide band limits of band the higher inhibition degree (more than 70dB) of (relative bandwidth can reach 45%) generation.
In another not shown embodiment of the present invention, the arrangement of described a plurality of sub-chamber 11-15 can be not upper in same direction (straight line), and for example, the orientation of a plurality of sub-chamber 11-15 forms right angle.As adaptive change, described stub 4 also needs to be designed to bending-like.Visible, suitably change the structure of indivedual parts of the present invention, still do not affect the realization of technique effect of the present invention.
Elliptic Function Type low pass filtering access of the present invention is applied in mixer, duplexer or filter, can brings into play better the performance of the high inhibition degree of its high bandwidth.
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 the claims in the present invention not, any type of being equal to, replaces or embodiment that simple modification all should be considered as being included by the present invention.
Claims (9)
1. an Elliptic Function Type low pass filtering access, be arranged in metallic cavity, it is characterized in that: described metallic cavity is provided with a plurality of sub-chambeies that are connected in turn, between adjacent two sub-chambeies, be provided with resonant column, resonant column top is provided with stub, corresponding each the resonant column place of stub is provided with through hole, and each resonant column all has a tuning screw through corresponding through hole and gos deep into this resonant column so that tuning screw and this resonant column capacitive coupling, and stub two ends form respectively two connectivity ports.
2. Elliptic Function Type low pass filtering access according to claim 1, is characterized in that, arranges in the same direction in described a plurality of sub-chambeies, and described stub is corresponding linearly.
3. Elliptic Function Type low pass filtering access according to claim 1, is characterized in that, does not arrange in described a plurality of sub-chambeies in same direction, the corresponding bending-like that is of described stub.
4. according to the Elliptic Function Type low pass filtering access described in any one in claims 1 to 3, it is characterized in that, between described tuning screw and resonant column, be provided with medium sleeve.
5. according to the Elliptic Function Type low pass filtering access described in any one in claims 1 to 3, it is characterized in that, the diameter of the through hole of described stub partial section is around greater than the diameter of stub main body.
6. according to the Elliptic Function Type low pass filtering access described in any one in claims 1 to 3, it is characterized in that, between described resonant column and the diapire of metallic cavity, be provided with spine.
7. Elliptic Function Type low pass filtering access according to claim 6, is characterized in that, the height of described each corresponding each spine of resonant column is different.
8. according to the Elliptic Function Type low pass filtering access described in any one in claims 1 to 3, it is characterized in that, in described a plurality of sub-chambeies, its minor chamber between two sub-chambeies of head and the tail is impartial large.
9. mixer/duplexer/filter, is characterized in that, it comprises Elliptic Function Type low pass filtering access as claimed in any of claims 1 to 8 in one of claims.
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 |
| BR112014004010A BR112014004010A2 (en) | 2011-08-24 | 2012-07-24 | low-pass filter path of elliptic function and communication cavity component using the same |
| PCT/CN2012/079075 WO2013026339A1 (en) | 2011-08-24 | 2012-07-24 | Elliptic function-type low-pass filter and communication cavity component employing 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 CN102354778A (en) | 2012-02-15 |
| CN102354778B true CN102354778B (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354778B (en) * | 2011-08-24 | 2014-03-26 | 京信通信系统（中国）有限公司 | Elliptic function low-path filtering path and communication cavity device adopting same |
| 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 |
| 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 |
| CN102683779B (en) * | 2012-05-18 | 2014-09-10 | 京信通信系统（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 |
| CN103972615B (en) * | 2013-01-29 | 2016-07-06 | 京信通信系统（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 |
| CN106602191A (en) * | 2016-12-14 | 2017-04-26 | 京信通信技术(广州)有限公司 | High-performance band-stop filter and the communication cavity component thereof |
| 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 |
| CN111108644B (en) * | 2018-05-10 | 2022-05-03 | 深圳市大富科技股份有限公司 | Cavity filter, filter cavity and preparation method thereof |
| 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 |
| 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 |
| 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 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3966197B2 (en) * | 2003-03-19 | 2007-08-29 | 三菱電機株式会社 | 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 |
| CN201181730Y (en) * | 2008-04-15 | 2009-01-14 | 华南理工大学 | Controllable electromagnetic mixed coupling coaxial cavity wave filter |
| CN101931113B (en) * | 2009-06-25 | 2013-01-23 | 泰科电子(上海)有限公司 | Low-pass filter |
| CN101630766B (en) * | 2009-07-23 | 2012-07-18 | 西安空间无线电技术研究所 | Antiphase coupling elliptic function spiral wave filter |
| CN102354778B (en) * | 2011-08-24 | 2014-03-26 | 京信通信系统（中国）有限公司 | Elliptic function low-path filtering path and communication cavity device adopting same |
| CN202196845U (en) * | 2011-08-24 | 2012-04-18 | 京信通信系统（中国）有限公司 | Elliptic function type low pass filtering access and communication cavity body device using same |
-
2011
- 2011-08-24 CN CN201110247335.XA patent/CN102354778B/en active Active
-
2012
- 2012-07-24 WO PCT/CN2012/079075 patent/WO2013026339A1/en active Application Filing
- 2012-07-24 BR BR112014004010A patent/BR112014004010A2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013026339A1 (en) | 2013-02-28 |
| BR112014004010A2 (en) | 2017-04-04 |
| CN102354778A (en) | 2012-02-15 |
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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. |