CN103972615B - Novel low pass filtering access and adopt its communication cavity device - Google Patents
Novel low pass filtering access and adopt its communication cavity device Download PDFInfo
- Publication number
- CN103972615B CN103972615B CN201310058589.6A CN201310058589A CN103972615B CN 103972615 B CN103972615 B CN 103972615B CN 201310058589 A CN201310058589 A CN 201310058589A CN 103972615 B CN103972615 B CN 103972615B
- Authority
- CN
- China
- Prior art keywords
- low pass
- pass filtering
- stub
- hole
- filtering access
- 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.)
- Active
Links
Classifications
-
- 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
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
- H01P1/2053—Comb or interdigital filters; Cascaded coaxial cavities the coaxial cavity resonators being disposed parall to each other
Abstract
The invention discloses a kind of novel low pass filtering access and adopt its communication cavity device, novel low pass filtering access includes metallic cavity and covers the cover plate of metallic cavity, set in described metallic cavity and multiple be sequentially connected logical sub-chamber, it is provided with connection window between adjacent two sub-chambeies, set a stub in metallic cavity and sequentially run through the sub-chamber being connected, the stub that each connection window is corresponding is provided through stub and exposes the resonant rod of shaft towards cover plate, cover plate is provided with the screwed hole corresponding with above-mentioned resonant rod, the tuning screw setting installing hole in one group gos deep into cavity and corresponding resonant rod capacitive coupling through screwed hole, and in installing hole, it is cased with medium socket cylinder.The novel low pass filtering access of the present invention and adopt its communication cavity device, electrical specifications is excellent, can tune and be easy to processing and batch production in outside, adopt the communication cavity device of this path, stronger suppression can be produced in the outer wider frequency segment limit of band, meet the high-isolation requirement between communication system.
Description
Technical field
The present invention relates to a kind of communication cavity device for signal of communication being carried out low-pass filtering, be specifically related to can the novel low pass filtering access of outside tuning and adopt the communication cavity device of this access structure, such as wave filter, combiner and duplexer.
Background technology
Along with the development of the integration of three networks and enabling of LTE frequency range, relatively conventional frequency range, new frequency range just develops towards lower and higher both direction.Along with the introducing of new standard or system, market is more and more higher to the requirement of passive device.
Combiner, duplexer and wave filter are widely used in the communications field as passive communication devices, especially field of radio frequency communication.And along with television system, video on-demand system join communication system passage, it is necessary to a kind of high performance low pass filter, realizing on the basis of cable TV signal normal transmission, simultaneously need to mobile communication system there to be higher degree of suppression.
For low pass filter, traditional implementation is usually Chebyshev type, such as common sugarcoated haws on a stick shape low pass filter, its advantage is simple in construction, is easily achieved, but shortcoming to be band outer declines slowly, Out-of-band rejection degree concordance low, filtering characteristic depends on processing and the precision of assembling.Such low pass filter is usually used in suppressing outside distally, and generally, it cannot meet the requirement of the high-isolation between real system.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, it is provided that a kind of with outer decline faster, Out-of-band rejection degree is higher, the low pass filtering access of being easy to outside tuning correction.
Another object of the present invention is to provide a kind of wave filter comprising described novel low pass filtering access.
It is still another object of the present invention to provide a kind of combiner comprising described novel low pass filtering access.
It is still another object of the present invention to provide a kind of duplexer comprising described novel low pass filtering access.
For reaching the purpose of foregoing invention, the present invention is achieved through the following technical solutions:
The novel low pass filtering access of the present invention, fixes the cover plate of installation including metallic cavity with metallic cavity；It is provided with in described metallic cavity and multiple is sequentially connected logical sub-chamber, it is provided with connection window between adjacent two sub-chambeies, it is provided with a stub in described metallic cavity and sequentially runs through the described sub-chamber being respectively connected, and the two-port that this stub is provided with cavity two ends is connected, stub is provided with hole corresponding to described connection the window's position place, is equipped with the one end resonant rod towards cover plate in described hole；Described cover plate is provided with the screwed hole corresponding with above-mentioned resonant rod present position, each screwed hole arranges a tuning screw for going deep into metallic cavity and corresponding resonant rod capacitive coupling through this screwed hole, this tuning screw is provided with installing hole towards one end of metallic cavity, and is socketed with medium socket cylinder in this installing hole.
The wave filter of the present invention, it comprises aforesaid novel low pass filter access structure
The combiner of the present invention, it comprises aforesaid novel low pass filter access structure.
The duplexer of the present invention, it comprises aforesaid novel low pass filter access structure.
Compared with prior art, present invention have the advantage that
The novel low pass filtering access of the present invention and adopt its communication cavity device, it is on the basis of traditional sugarcoated haws on a stick shape low pass filter, the harmonic oscillator of its Low ESR part instead equivalent inductance capacitances in series is incorporated to primary path, the equivalent inductance of this harmonic oscillator is realized by the high impedance formed between resonant rod and cavity wall, and equivalent capacity is realized by the slot-coupled between tuning screw and resonant rod inwall.The communication cavity device so formed, band is outer to decline comparatively fast, and can produce stronger suppression in the outer very wide band limits of band, thus the requirement of the high-isolation met 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 big.On the other hand, tuning screw is fixed on the outer surface of cover plate so that the debugging of low pass filter is very convenient, saves the step in the past repeatedly tearing lid debugging open, ensure that its excellent intermodulation performance while improving low pass filter production efficiency.
Accompanying drawing explanation
Fig. 1 is the package assembly schematic diagram of the novel low pass filtering access of the present invention.
Fig. 2 is the stub mounting structure figure with resonant rod of the novel low pass filtering access of the present invention.
Fig. 3 is the equivalent circuit diagram of the novel low pass filtering access of the present invention.
Detailed description of the invention
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated:
Referring to Fig. 1, the embodiment of the novel low pass filtering access of the present invention, this novel low pass filtering access is the low pass filtering access of design forming in metallic cavity 1, includes metallic cavity 1 and fixes the cover plate 2 of installation with metallic cavity 1.Many sub-chambeies are formed in metallic cavity 1, and for connecting window 16 between adjacent two sub-chamber 11-15, thus each sub-chamber 11-15 of UNICOM successively, in metallic cavity, a stub 3 traverses each sub-chamber 11-15 of metallic cavity 1 longitudinally and connects window 16, and fixing with the port 17,18 that metallic cavity 1 two ends are arranged connect.Connect with each on relevant position of the corresponding stub 3 of window 16 and be provided through stub 3 the resonant rod 31-34 towards cover plate.Cover plate 2 is provided with the screwed hole 23 corresponding to above-mentioned resonant rod 31-34 present position and gos deep into metallic cavity 1 and the capacitively coupled tuning screw 21 of corresponding resonant rod 31-34 through this screwed hole 24.
Please further combined with Fig. 2 and Fig. 3, it is simple to become apparent from understanding the concrete structure of the present embodiment and electrical principle.
The plurality of sub-chamber 11-15 substantially in the same direction namely along a straight line path sequentially arrange, the spatial volume of sub-chamber 11-15 is sized depending on the design of electrical performance indexes and realizes, preferably, except in the direction head and the tail two sub-chambeies 11 and 15 spatial volume relatively small except, the sub-chamber 12-14 of all the other sections of mediating is substantially the same or akin spatial volume, can be considered etc. big.
Described stub 3 two ends respectively with two ports 17, the inner wire (not shown) of 18 is connected, two ports 17 and 18 are fixed in metallic cavity 1, thus stub 3 is fixed on the longitudinal axis of metallic cavity 1, thus the connection window 16 between each sub-chamber 11-15 of traverse and adjacent sub-chamber.In stub 3 position of each connection window 16 correspondence, there is hole 36, make resonant rod stretch to cover plate 2 through this hole 36 in one end to arrange, and its other end is set within stepped this hole 36 being retained in stub 3, stair-stepping design makes to leave the gap 35 welded with stub 3 between resonant rod with hole 36, with scolding tin, resonant rod is welded with stub 3 phase thus being beneficial to, and scolding tin not easily overflows this hole 36.The height height that each resonant rod stretches out stub 3 and presents differs, and different resonant rods adapt to different frequency ranges and have different length, are consequently formed multiple resonant rod 31-34 arranged along same straight line.
Screwed hole 23 and the tuning screw 21 of this screwed hole 23 of traverse on cover plate 2 adapt to the position of stub 3 and resonant rod 31-34 and linearly arrange, the external screw thread of tuning screw 21 is supporting with the female thread of screwed hole 23, thus scalable tuning screw 21 gos deep into the degree of depth in metallic cavity 1.Tuning screw 21 stretches into one end of cavity and has an installing hole, and this installing hole is the through hole that is gradually reduced of inside aperture or blind hole, the medium sleeve 22 that this installing hole is made up of politef or other insulant for inner sleeve one.One end end face that tuning screw 21 is exposed on cover plate 2 has flat recess or cross recess for ease of rotation tuning screw rod 21, and the shaft of this end of tuning screw 21 is hex bolts structure.
The installing hole of tuning screw 21 is stepped, namely big in the aperture at installing hole access port place, more more little toward internal orifice dimension.Described medium sleeve 22 and tuning screw 21 elastic conjunction, and medium sleeve 22 exposes the installing hole of tuning screw 21 and forms a boss, when after medium sleeve 22 with tuning screw 21 elastic conjunction, on medium sleeve 22, the raised head face of local exceeds the end face of tuning screw 21, so be conducive to assembling, and medium sleeve 22 difficult drop-off and effectively prevent tuning screw 21 and stub 3 short circuit.
nullWhen cover plate 2 is installed in metallic cavity 1，Along with going deep into of tuning screw 21，Medium sleeve 22 in tuning screw 21 can inner sleeve resonant rod 31-34，Thus the capacitive coupling realized between resonance screw rod 21 and corresponding resonant rod 31-34，Thus by tuning screw 21、Medium sleeve 22 coordinates installation with the resonant rod 31-34 on stub 3，As shown in Figure 3，These resonant rods 31-34、Connect window 16、Medium sleeve 22 and tuning screw 21 together form the equivalent capacity inductance in equivalent inductance capacitance series resonance，Capacitance Coupled and inductive effect can be produced，Form a series resonant circuit，Its equivalent capacity inductance is by tuning screw 21、Stub 3、The relative position of resonant rod 31-34 and resonant rod 31-34 and tuning screw 21 determines，This series resonant circuit forms transmission zero at the suppression passband of low pass filtering access.
So, equivalent serial consonant in series of corresponding equivalent inductance and equivalent capacity.Multiple equivalent serial consonant and then match and make low pass filtering access (relative bandwidth is up to 45%) higher degree of suppression (more than 70dB) can be produced in the outer very wide band limits of band.
In another embodiment that the present invention is not shown, the arrangement of the plurality of sub-chamber 11-15 can not in the same direction, namely be arranged along bending path, for instance, the orientation of many sub-chamber 11-15 forms right angle.As adaptive change, described stub 3 also needs to be designed to bending.Screwed hole 23 and tuning screw 21 on corresponding cover plate do adaptive arrangement.Visible, suitably change the structure of the individual part of the present invention, still do not affect the realization of the technique effect of the present invention.
The structure of the novel low pass filtering access of the present invention is applied to communication cavity device, in wave filter, combiner and duplexer, combiner therein is also referred to as shunt according to the difference of port service condition, can play the performance of its high bandwidth degree of suppression better.
Above-described embodiment is only in order to illustrate the present invention and and unrestricted technical scheme described in the invention；Therefore, although this specification with reference to each above-mentioned embodiment to present invention has been detailed description, but, it will be understood by those within the art that, still the present invention can be modified or equivalent replace；And all are without departing from the technical scheme of the spirit and scope of the present invention and improvement thereof, it all should be encompassed in the middle of scope of the presently claimed invention.
Claims (11)
1. low pass filtering access, fixes the cover plate of installation including metallic cavity with metallic cavity；It is provided with in described metallic cavity and multiple is sequentially connected logical sub-chamber, it is provided with connection window between adjacent two sub-chambeies, it is provided with a stub in described metallic cavity and sequentially runs through the described sub-chamber being respectively connected, and the two-port that this stub is provided with cavity two ends is connected, stub is provided with hole corresponding to described connection the window's position place, is equipped with the one end resonant rod towards cover plate in described hole；Described cover plate is provided with the screwed hole corresponding with above-mentioned resonant rod present position, each screwed hole arranges a tuning screw for going deep into metallic cavity and corresponding resonant rod capacitive coupling through this screwed hole, this tuning screw is provided with installing hole towards one end of metallic cavity, and is socketed with medium socket cylinder in this installing hole.
2. low pass filtering access according to claim 1, it is characterised in that: arranging in the same direction in the plurality of sub-chamber, described stub is linearly accordingly.
3. low pass filtering access according to claim 1, it is characterised in that: not arranging in the same direction in the plurality of sub-chamber, described stub is accordingly in bending.
4. low pass filtering access as claimed in any of claims 1 to 3, it is characterized in that: one end that described resonant rod is retained in the hole of stub is set to stepped, welding mutually at hole place with stub, each resonant rod on this stub exceeds the highly consistent or inconsistent of corresponding hole.
5. low pass filtering access as claimed in any of claims 1 to 3, it is characterised in that: the installing hole of described tuning screw is through hole or blind hole.
6. low pass filtering access according to claim 5, it is characterised in that: the installing hole of described tuning screw is stepped, its in the aperture at installing hole access port place more than the aperture within installing hole.
7. low pass filtering access according to claim 6, it is characterised in that: described medium sleeve and tuning screw elastic conjunction, and medium sleeve exposes the installing hole of tuning screw and forms a boss.
8. low pass filtering access as claimed in any of claims 1 to 3, it is characterised in that: in the plurality of sub-chamber, its minor chamber between two sub-chambeies of head and the tail is impartial big.
9. a wave filter, it is characterised in that comprise the overall structure of low pass filtering access as claimed in any of claims 1 to 8 in one of claims.
10. a combiner, it is characterised in that comprise the overall structure of low pass filtering access as claimed in any of claims 1 to 8 in one of claims.
11. a duplexer, it is characterised in that comprise the overall structure of low pass filtering access as claimed in any of claims 1 to 8 in one of claims.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310058589.6A CN103972615B (en) | 2013-01-29 | 2013-01-29 | Novel low pass filtering access and adopt its communication cavity device |
| PCT/CN2013/079284 WO2014117482A1 (en) | 2013-01-29 | 2013-07-12 | Novel low-pass filtering path and communication cavity device using same |
| BR112015011114A BR112015011114A8 (en) | 2013-01-29 | 2013-07-12 | LOW PASS FILTER PATH AND COMMUNICATION CAVITY COMPONENT USING THE SAME |
| TW102144762A TWI542070B (en) | 2013-01-29 | 2013-12-06 | Low-pass filter path and the use of its communication cavity device |
| HK15100839.8A HK1200597A1 (en) | 2013-01-29 | 2015-01-26 | New type low pass filter path and communication cavity component using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310058589.6A CN103972615B (en) | 2013-01-29 | 2013-01-29 | Novel low pass filtering access and adopt its communication cavity device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103972615A CN103972615A (en) | 2014-08-06 |
| CN103972615B true CN103972615B (en) | 2016-07-06 |
Family
ID=51241858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310058589.6A Active CN103972615B (en) | 2013-01-29 | 2013-01-29 | Novel low pass filtering access and adopt its communication cavity device |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN103972615B (en) |
| BR (1) | BR112015011114A8 (en) |
| HK (1) | HK1200597A1 (en) |
| TW (1) | TWI542070B (en) |
| WO (1) | WO2014117482A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977586A (en) * | 2016-06-23 | 2016-09-28 | 江苏华灿电讯股份有限公司 | Low-frequency ultra-wideband filter |
| CN108199124B (en) * | 2018-02-08 | 2020-06-02 | 京信通信技术(广州)有限公司 | Elliptic function type low-pass filter and radio frequency device |
| CN110416672B (en) * | 2019-08-01 | 2024-02-27 | 京信通信技术(广州)有限公司 | High-pass filter and communication cavity device with same |
| CN110416676B (en) * | 2019-08-01 | 2024-02-27 | 京信通信技术(广州)有限公司 | Combiner device |
| WO2023159482A1 (en) * | 2022-02-25 | 2023-08-31 | Telefonaktiebolaget Lm Ericsson (Publ) | A communication device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354778A (en) * | 2011-08-24 | 2012-02-15 | 京信通信系统（中国）有限公司 | Elliptic function low-path filtering path and communication cavity device adopting same |
| CN203300771U (en) * | 2013-01-29 | 2013-11-20 | 京信通信系统（中国）有限公司 | Novel low-pass filtering pathway, filter, combiner and duplexer |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6919782B2 (en) * | 2001-04-04 | 2005-07-19 | Adc Telecommunications, Inc. | Filter structure including circuit board |
| JP3966197B2 (en) * | 2003-03-19 | 2007-08-29 | 三菱電機株式会社 | Dual mode filter |
| US7388458B2 (en) * | 2004-10-19 | 2008-06-17 | Powerwave Technologies Sweden Ab | DC extracting arrangement and a filter |
| CN101409377A (en) * | 2008-11-24 | 2009-04-15 | 丹东华讯电子有限公司 | Cavity filter structure mathematical response model and cavity filter for mobile communication network thereof |
| CN101931113B (en) * | 2009-06-25 | 2013-01-23 | 泰科电子(上海)有限公司 | Low-pass filter |
| CN102386463B (en) * | 2011-08-24 | 2013-11-20 | 京信通信系统（中国）有限公司 | Communication cavity device and combining and distribution structure thereof |
-
2013
- 2013-01-29 CN CN201310058589.6A patent/CN103972615B/en active Active
- 2013-07-12 WO PCT/CN2013/079284 patent/WO2014117482A1/en active Application Filing
- 2013-07-12 BR BR112015011114A patent/BR112015011114A8/en active Search and Examination
- 2013-12-06 TW TW102144762A patent/TWI542070B/en active
-
2015
- 2015-01-26 HK HK15100839.8A patent/HK1200597A1/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354778A (en) * | 2011-08-24 | 2012-02-15 | 京信通信系统（中国）有限公司 | Elliptic function low-path filtering path and communication cavity device adopting same |
| CN203300771U (en) * | 2013-01-29 | 2013-11-20 | 京信通信系统（中国）有限公司 | Novel low-pass filtering pathway, filter, combiner and duplexer |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112015011114A2 (en) | 2017-10-24 |
| TWI542070B (en) | 2016-07-11 |
| CN103972615A (en) | 2014-08-06 |
| TW201431172A (en) | 2014-08-01 |
| WO2014117482A1 (en) | 2014-08-07 |
| BR112015011114A8 (en) | 2022-07-05 |
| HK1200597A1 (en) | 2015-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102354778B (en) | Elliptic function low-path filtering path and communication cavity device adopting same | |
| JP6676171B2 (en) | Filters and wireless network devices | |
| CN103972615B (en) | Novel low pass filtering access and adopt its communication cavity device | |
| CN203300776U (en) | Communication cavity device and low-pass filtering path | |
| CN103855448A (en) | TM mode dielectric filter | |
| CN107104256B (en) | A kind of screw-filter and its design method | |
| CN112953434A (en) | Wide-passband filter based on film bulk acoustic resonator | |
| CN103594767B (en) | A kind of integrated cavity body filter | |
| CN203895578U (en) | Filter loading electric field by using coaxial cavity gradually changing spiral tubes | |
| CN203300771U (en) | Novel low-pass filtering pathway, filter, combiner and duplexer | |
| CN104409813A (en) | Vertical interdigital filter based on source-load coupling | |
| CN206532856U (en) | Suspended stripline bandstop filter and its communication cavity device | |
| CN112087212B (en) | Miniaturized electric adjusting filter | |
| CN202167591U (en) | Coaxial cavity filter for realizing transmission zero | |
| CN103545580A (en) | Miniaturized adjustable band stop filter | |
| CN202196845U (en) | Elliptic function type low pass filtering access and communication cavity body device using same | |
| CN203617410U (en) | Integrated cavity filter | |
| CN207868360U (en) | Four frequency combiners | |
| CN102623776A (en) | Coaxial cavity-based rejection filter | |
| CN102881973B (en) | Coaxial cavity filter achieving transmission zero | |
| CN203503761U (en) | Elliptic function type low pass filter | |
| CN106785252A (en) | New resistance filter apparatus | |
| CN103474726B (en) | Elliptic Function Type low pass filter | |
| CN204361222U (en) | A kind of coaxial filter | |
| CN103151582A (en) | Micro wave and micro band band-pass filter for miniature large double-frequency ratio wide band |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1200597 Country of ref document: HK |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1200597 Country of ref document: HK |
|
| TR01 | Transfer of patent right |
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. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230912 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. |
|
| TR01 | Transfer of patent right |