CN102593564A - Cavity filter cross-coupling structure and cavity filter - Google Patents
Cavity filter cross-coupling structure and cavity filter Download PDFInfo
- Publication number
- CN102593564A CN102593564A CN2012100877048A CN201210087704A CN102593564A CN 102593564 A CN102593564 A CN 102593564A CN 2012100877048 A CN2012100877048 A CN 2012100877048A CN 201210087704 A CN201210087704 A CN 201210087704A CN 102593564 A CN102593564 A CN 102593564A
- Authority
- CN
- China
- Prior art keywords
- coupling structure
- adjustable column
- cross coupling
- cavity
- cavity body
- 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.)
- Granted
Links
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a cavity filter cross-coupling structure and a cavity filter. The cavity filter cross-coupling structure comprises an adjusting column which is installed inside a resonance cavity of a filter cavity and a cross-coupling structural element, wherein two ends of the cross-coupling structural element are respectively connected onto the adjusting columns inside two resonance cavities, and a connecting point between the adjusting columns and the cross-coupling structural element is adjustable along the axial direction of the adjusting column. The cavity filter cross-coupling structure has adjustability on the cross-coupling strength, and a reached radio frequency index is good.
Description
Technical field
The present invention relates to the communication radio frequency field, be specifically related to a kind of cavity body filter cross coupling structure and a kind of cavity body filter.
Background technology
Cavity body filter is widely used in the wireless communication link circuit node as a kind of signal of communication Processing Structure part.Accomplish in the process of signal emission and acceptance in communication system, cavity body filter has through the special frequency band signal, the effect of rejection band external signal.
As the part that signal of communication is handled, filter often is placed in inside of base station or antenna end.Based on the requirement that the base station transportation is installed and antenna is installed, filter miniaturization and low-cost trend are more obvious in recent years.For cooperating the installation of other Signal Processing Elements, often there is certain requirement in operator to the overall dimension of filter.For realizing specific transmission and the reflecting properties of filter; Especially the outer rejection ratio of band is than under the strict situation; Some special cross coupling structures are used in unavoidable meeting in the Design of Filter, and like " near straight line path cross-couplings ", promptly a plurality of resonant cavitys are the arranged distribution that is bordering on straight line.
Nearly straight line path cross-couplings is because realization is comparatively difficult, and difficult debugging, and Design of Filter personnel often avoid employing as far as possible.But strict at some contour structures, on transmission and the special filter of reflecting properties index request, this structure can't be avoided.
Traditional " near straight line path cross-couplings " mode generally has two kinds: a kind of cross coupling structure is as shown in Figure 1; This kind cross coupling structure comprises two non-conterminous resonant cavitys 101 and 102; And between two resonant cavitys the connecting line 103 of coupled signal, connecting line 103 is fixed on the cover plate of filter; Another kind of cross coupling structure is as shown in Figure 2; This kind cross coupling structure comprises two non-conterminous resonant cavitys 201 and 202; And between two resonant cavitys the brace 203 of coupled signal, brace 203 is separately fixed on the immutable boss 211 of height and 212 of two resonant cavity cavity bottoms.
Because design of Simulation sum of errors fabrication error; Filter first sample cross-couplings intensity often can't reach expected results; Need in the production debugging process, regulate to confirm the position of final connecting line or brace; And two kinds of cross coupling structures of the prior art all do not have tunability, have only modification connecting line through repeatedly position or the height of boss in cavity to meet the requirements of RF index, and processing cost and time cost are higher.
Summary of the invention
The invention provides a kind of cavity body filter cross coupling structure and a kind of cavity body filter, can effectively solve the nonadjustable defective of cross coupling structure of the prior art.
The invention provides a kind of cavity body filter cross coupling structure; Comprise the adjustable column in the resonant cavity that is installed on filter cavity; And cross coupling structure spare; Said cross coupling structure spare two ends are connected on the adjustable column in two resonant cavitys, and the tie point of said adjustable column and cross coupling structure spare is along adjustable on the said adjustable column axial direction.
Preferably, said cross coupling structure spare is a connecting line, and said adjustable column in axial direction is provided with the installing hole of a plurality of fixing said connecting lines.
Preferably, said connecting line is welded in the said installing hole.
Preferably, the axial direction of said adjustable column is provided with screw hole, and said screw hole communicates with said installing hole, and the screw of said connecting line through passing said screw hole is on said adjustable column.
Preferably, also be provided with boss in the filter cavity, said adjustable column is installed on the said boss, interference fit between said adjustable column and the said boss.
Preferably, said cross coupling structure spare is a brace, and said adjustable column is threaded with said filter cavity, regulates the tie point of adjustable column and cross coupling structure spare through the degree of depth of regulating adjustable column screw-in cavity.
Preferably, brace passes through screw lock at the adjustable column top.
Perhaps, brace is welded on the adjustable column top.
Preferably, also be provided with boss in the filter cavity, said adjustable column is installed on the said boss, said adjustable column and said boss threaded engagement.
Preferably, the fastening spring that both connect is installed between the screwed hole of said adjustable column and cavity.
Preferably; Said adjustable column in axial direction is provided with the installing hole of a plurality of fixing said cross coupling structure spares; Said adjustable column is threaded with said filter cavity, regulates the tie point of adjustable column and cross coupling structure spare through the degree of depth of regulating adjustable column screw-in cavity.
The present invention also provides a kind of cavity body filter, comprises a plurality of resonant cavitys, has at least between two resonant cavitys to comprise above-described cross coupling structure.
Cavity body filter cross coupling structure provided by the invention and cavity body filter; Through adjustable column cross coupling structure spare is regulated; Make the stiffness of coupling of cross coupling structure spare have adjustability; Avoid in the first sample debug process repeatedly that cutter mills and electroplates cost and the time waste that brings, solved the problem of the non-adjustable or adjustability difference of cross coupling structure spare in the prior art, RF index is better.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of cavity body filter cross coupling structure of the prior art;
Fig. 2 is an another kind of cavity body filter cross coupling structure of the prior art;
Fig. 3 is the profile of a kind of cavity body filter cross coupling structure in the embodiment of the invention one;
Fig. 4 is the partial cutaway schematic of a kind of cavity body filter cross coupling structure in the embodiment of the invention one;
Fig. 5 is the sketch map of a kind of adjustable column of cavity body filter cross coupling structure in the embodiment of the invention one;
Fig. 6 is the profile of a kind of cavity body filter cross coupling structure in the embodiment of the invention two;
Fig. 7 is the structural representation of a kind of adjustable column of cavity body filter cross coupling structure in the embodiment of the invention two;
Fig. 8 is the generalized section of a kind of adjustable column of cavity body filter cross coupling structure in the embodiment of the invention two.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment one,
A kind of cavity body filter cross coupling structure; As shown in Figure 3; Comprise the adjustable column 302 and 303 in the resonant cavity that is installed on filter cavity 301; And cross coupling structure spare 304, said cross coupling structure spare two ends are connected on the adjustable column 302 and 303 in two resonant cavitys, and the tie point of said adjustable column and cross coupling structure spare 304 is along adjustable on the said adjustable column axial direction.
Concrete, in the lump with reference to figure 4 and Fig. 5, the cross coupling structure spare in this enforcement 304 is a connecting line; Adjustable column 302 in axial direction is provided with the installing hole 311 of a plurality of fixed connection lines; Connecting line 304 is fixed in the installing hole 311, can require to select connecting line is fixed in the installing hole of differing heights according to RF index, receives the electromagnetic field effects of resonant cavity interior resonance bar; Tie point is the closer to the adjustable column top; The cross-couplings amount is big more, otherwise more little, has therefore realized the adjustability of cross-couplings intensity.And with respect to connecting line welding of the prior art technology on the cover board, it is easier to adopt erection column to be fixedly connected line.
Connecting line can be welded in the installing hole; Also can be screwed in installing hole; Shown in Fig. 3 and Fig. 4 is the screw ways of connecting, and concrete, the axial direction of adjustable column is provided with screw hole 312; Screw hole 312 communicates with installing hole 311, and screw 313 passes screw hole 312 and connecting line 304 is fixed on the adjustable column 302.
Because the restriction of cavity thickness is provided with boss 305 in the filter cavity in the present embodiment, as shown in Figure 3; Adjustable column 302 is installed on the boss 305, and interference fit between adjustable column 302 and the boss 305 is concrete; Like Fig. 4 and shown in Figure 5; Adjustable column comprises the interference fit portion 314 that dwindles, and boss is provided with the hole of interference fit, interference fit portion on the adjustable column and the hole interference fit on the boss.
Embodiment two,
A kind of cavity body filter cross coupling structure; As shown in Figure 6; Comprise the adjustable column 402 and 403 in the resonant cavity that is installed on filter cavity 401; And cross coupling structure spare 404, said cross coupling structure spare 404 two ends are connected on the adjustable column 402 and 403 in two resonant cavitys, said adjustable column 402 and 403 and the said adjustable column axial direction in tie point edge of cross coupling structure spare 404 on adjustable.
Concrete, in the lump with reference to figure 7 and Fig. 8, the cross coupling structure spare in the present embodiment 404 is a brace, adjustable column is threaded with filter cavity, regulates the tie point of adjustable column and brace through the degree of depth of regulating adjustable column screw-in cavity.Receive the electromagnetic field effects of resonant cavity interior resonance bar, tie point is the closer to the adjustable column top, and the cross-couplings amount is big more, otherwise more little, directly brace is fixed on the highly immutable boss with respect to of the prior art, has realized the adjustability of cross-couplings intensity.
Brace can be locked at the top of adjustable column 402 through screw 407, and shown in Fig. 6 is the screw ways of connecting, can certainly be welded on the top of adjustable column.
Because the restriction of cavity thickness also is provided with boss 405 in the filter cavity, said adjustable column 402 is installed on the boss 405, adjustable column 402 and boss 405 threaded engagement.
Better for what adjustable column was connected with boss, the fastening spring 406 that both connect is installed between the screwed hole of adjustable column and boss.
Embodiment three,
A kind of cavity body filter cross coupling structure; Comprise the adjustable column in the resonant cavity that is installed on filter cavity; And cross coupling structure spare; Said cross coupling structure spare two ends are connected on the adjustable column in two resonant cavitys, and the tie point of said adjustable column and cross coupling structure spare is along adjustable on the said adjustable column axial direction.
Adjustable column in this enforcement in axial direction is provided with the installing hole of a plurality of fixedly cross coupling structure spares; And adjustable column is threaded with filter cavity; Can perhaps regulate the degree of depth of adjustable column screw-in cavity or the tie point that adjustable column and cross coupling structure spare are regulated in the common cooperation of dual mode in the position of installing hole through regulating cross coupling structure spare; Cross coupling structure spare can be any one of brace or connecting line in the present embodiment, selects with brace or connecting line according to the requirement of RF index.Directly connecting line is fixed on the cover board or brace is fixed on the highly immutable boss with respect to of the prior art, realized the adjustability of cross-couplings intensity.
Cross coupling structure spare can be welded in the installing hole of erection column; Also can be screwed in installing hole, concrete, the axial direction of adjustable column is provided with screw hole, and screw hole communicates with installing hole, and screw passes screw hole and cross coupling structure spare is fixed on the adjustable column.
Cross coupling structure spare also can certainly be welded on the top of adjustable column through screw lock at the top of adjustable column.
Adjustable column is threaded with filter cavity, can screw in the degree of depth change tie point of filter cavity through adjustable column, also can be only as a kind of the be connected fixed form of adjustable column with filter cavity.
Because the restriction of cavity thickness is provided with boss in the filter cavity in the present embodiment, adjustable column is threaded with boss.
Better for what adjustable column was connected with boss, the fastening spring that both connect is installed between the screwed hole of adjustable column and boss.
Embodiment four,
A kind of cavity body filter comprises a plurality of resonant cavitys, has at least to comprise the described cross coupling structure of above embodiment between two resonant cavitys.
More than cross coupling structure and cavity body filter that the embodiment of the invention provided have been carried out detailed introduction, wherein:
Cavity body filter cross coupling structure provided by the invention and cavity body filter; Through adjustable column cross coupling structure spare is regulated; Make the stiffness of coupling of cross coupling structure spare have adjustability; Avoid in the first sample debug process repeatedly that cutter mills and electroplates cost and the time waste that brings, solved the problem of the non-adjustable or adjustability difference of cross coupling structure spare in the prior art, RF index is better.
Used concrete example among this paper principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1. a cavity body filter cross coupling structure is characterized in that, comprising:
Be installed on the interior adjustable column of resonant cavity of filter cavity; And cross coupling structure spare; Said cross coupling structure spare two ends are connected on the adjustable column in two resonant cavitys, and the tie point of said adjustable column and cross coupling structure spare is along adjustable on the said adjustable column axial direction.
2. cavity body filter cross coupling structure according to claim 1 is characterized in that said cross coupling structure spare is a connecting line, and said adjustable column in axial direction is provided with the installing hole of a plurality of fixing said connecting lines.
3. cavity body filter cross coupling structure according to claim 2 is characterized in that said connecting line is welded in the said installing hole.
4. cavity body filter cross coupling structure according to claim 2; It is characterized in that; The axial direction of said adjustable column is provided with screw hole, and said screw hole communicates with said installing hole, and the screw of said connecting line through passing said screw hole is on said adjustable column.
5. according to any described cavity body filter cross coupling structure of claim 1-4, it is characterized in that also be provided with boss in the filter cavity, said adjustable column is installed on the said boss, interference fit between said adjustable column and the said boss.
6. cavity body filter cross coupling structure according to claim 1; It is characterized in that; Said cross coupling structure spare is a brace; Said adjustable column is threaded with said filter cavity, regulates the tie point of adjustable column and cross coupling structure spare through the degree of depth of regulating adjustable column screw-in cavity.
7. cavity body filter cross coupling structure according to claim 6 is characterized in that, said brace passes through screw lock at the adjustable column top.
8. cavity body filter cross coupling structure according to claim 6 is characterized in that said brace is welded on the adjustable column top.
9. according to any described cavity body filter cross coupling structure of claim 6-9, it is characterized in that also be provided with boss in the filter cavity, said adjustable column is installed on the said boss, said adjustable column and said boss threaded engagement.
10. cavity body filter cross coupling structure according to claim 9 is characterized in that, the fastening spring that both connect is installed between the screwed hole of said adjustable column and boss.
11. cavity body filter cross coupling structure according to claim 1; It is characterized in that; Said adjustable column in axial direction is provided with the installing hole of a plurality of fixing said cross coupling structure spares; Said adjustable column is threaded with said filter cavity, regulates the tie point of adjustable column and cross coupling structure spare through the degree of depth of regulating adjustable column screw-in cavity.
12. a cavity body filter comprises a plurality of resonant cavitys, it is characterized in that, has at least to comprise any described cross coupling structure of claim 1-12 between two resonant cavitys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210087704.8A CN102593564B (en) | 2012-03-29 | 2012-03-29 | Cavity filter cross-coupling structure and cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210087704.8A CN102593564B (en) | 2012-03-29 | 2012-03-29 | Cavity filter cross-coupling structure and cavity filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102593564A true CN102593564A (en) | 2012-07-18 |
| CN102593564B CN102593564B (en) | 2015-06-03 |
Family
ID=46481911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210087704.8A Active CN102593564B (en) | 2012-03-29 | 2012-03-29 | Cavity filter cross-coupling structure and cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102593564B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207339A (en) * | 2016-08-31 | 2016-12-07 | 安徽赛福电子有限公司 | A kind of coupling filter |
| WO2017088348A1 (en) * | 2015-11-25 | 2017-06-01 | 江苏贝孚德通讯科技股份有限公司 | Duplexer with quasi-stripline structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080272861A1 (en) * | 2007-05-02 | 2008-11-06 | M/A-Com, Inc. | Cross coupling tuning apparatus for dielectric resonator circuit |
| CN101527380A (en) * | 2009-04-22 | 2009-09-09 | 京信通信系统（中国）有限公司 | Cavity radio frequency apparatus with capacitive cross coupling device |
| CN101800347A (en) * | 2010-03-29 | 2010-08-11 | 京信通信系统（中国）有限公司 | Cavity radio frequency device and fly bar thereof for capacitive cross coupling |
| CN202013204U (en) * | 2011-03-08 | 2011-10-19 | 宁波信泰机械有限公司 | Test bracket for supporting sample piece |
-
2012
- 2012-03-29 CN CN201210087704.8A patent/CN102593564B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080272861A1 (en) * | 2007-05-02 | 2008-11-06 | M/A-Com, Inc. | Cross coupling tuning apparatus for dielectric resonator circuit |
| CN101527380A (en) * | 2009-04-22 | 2009-09-09 | 京信通信系统（中国）有限公司 | Cavity radio frequency apparatus with capacitive cross coupling device |
| CN101800347A (en) * | 2010-03-29 | 2010-08-11 | 京信通信系统（中国）有限公司 | Cavity radio frequency device and fly bar thereof for capacitive cross coupling |
| CN202013204U (en) * | 2011-03-08 | 2011-10-19 | 宁波信泰机械有限公司 | Test bracket for supporting sample piece |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017088348A1 (en) * | 2015-11-25 | 2017-06-01 | 江苏贝孚德通讯科技股份有限公司 | Duplexer with quasi-stripline structure |
| CN106207339A (en) * | 2016-08-31 | 2016-12-07 | 安徽赛福电子有限公司 | A kind of coupling filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102593564B (en) | 2015-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103201897B (en) | Cavity filter | |
| AU760267B2 (en) | Multiband antenna | |
| CN101605448A (en) | Screening arrangement and printed circuit board (PCB) with shielding protection | |
| CN102683769B (en) | Cavity filter, duplexer and combiner | |
| CN103856275B (en) | Antenna and calibrating installation thereof | |
| CN204279981U (en) | A kind of outer shroud frame for rocket cabin body | |
| CN102593564A (en) | Cavity filter cross-coupling structure and cavity filter | |
| CN102299424A (en) | Dual-frequency dual-polarized feed assembly in C frequency band | |
| CN202633487U (en) | Cavity filter cross coupling structure and cavity filter | |
| CN102544658A (en) | Cavity filter and cross-coupling structure of cavity filter | |
| CN111129734B (en) | Antenna and radiating element | |
| CN101807736B (en) | Cavity filter, cavity filter cover plate and tuning screw self-locking device | |
| CN105006634A (en) | Two-layer plane phase modulation apparatus | |
| CN202474159U (en) | Cavity filter and cross coupling structure thereof | |
| CN202275899U (en) | Coupling adjusting structure of medium filter | |
| CN102324598A (en) | Adjustable band elimination filter | |
| CN103268971A (en) | Miniaturization device for converting end feeding type coaxial line to circular waveguide | |
| CN101997173A (en) | Wideband microwave antenna feed | |
| CN109103555B (en) | Three-band filter based on SIW structure | |
| CN201749918U (en) | Cavity filter and filter cavity | |
| CN203386876U (en) | A cavity filter | |
| CN203850579U (en) | Antenna connecting assembly | |
| CN111193559B (en) | Design and debugging method of special-shaped reference ring | |
| CN203250841U (en) | Miniaturized converter from end fed type coaxial line to circular waveguide | |
| CN202134639U (en) | Adjustable band-stop filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180727 Address after: 233400 Huaiyuan County Economic Development Zone, Bengbu, Anhui Patentee after: Anhui Dafu Electromechanical Technology Co., Ltd. Address before: 518104 Floors 101, 2 and A4 of A1, A2, A3 of Shajing Street, Shajing Street, Shajing Road, Shajing Industry Co., Ltd. No. 3 Industrial Zone, Shenzhen City, Guangdong Province Patentee before: Shenzhen Tat Fook Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |