CN101964439B - Filter coupling structure with adjustable capacity - Google Patents
Filter coupling structure with adjustable capacity Download PDFInfo
- Publication number
- CN101964439B CN101964439B CN 201010521628 CN201010521628A CN101964439B CN 101964439 B CN101964439 B CN 101964439B CN 201010521628 CN201010521628 CN 201010521628 CN 201010521628 A CN201010521628 A CN 201010521628A CN 101964439 B CN101964439 B CN 101964439B
- Authority
- CN
- China
- Prior art keywords
- rod
- coupling structure
- resonant
- cavity
- adjusting screw
- 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
- 230000008878 coupling Effects 0.000 title claims abstract description 36
- 238000010168 coupling process Methods 0.000 title claims abstract description 36
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- 208000002925 dental caries Diseases 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Images
Abstract
The embodiment of the invention discloses a filter coupling structure with adjustable capacity. The filter coupling structure is arranged in a cavity with at least two resonant cavities. The filter coupling structure contains a coupling structure which is arranged between the resonant cavities and contains a plastic part and a metal sheet, wherein a part of the metal sheet is embedded in the plastic part, two opposite projection parts extend from the two sides of the center of the metal sheet; the projection parts are embedded in the plastic part; a first adjusting screw rod penetrates a cover plate, and the cover plate are matched with the cavity; and the first adjusting screw rod is arranged between the two opposite projection parts. The invention provides a simple and realizable filter which is easy to form and the filter coupling structure with adjustable capacity which can be adjusted without being disassembled and have wide adjusting range, so as to satisfy the demand of the out-of-band rejection degree.
Description
Technical field
The invention belongs to radio frequency and microwave filter in the wireless communication field, relate in particular to a kind of filter coupling structure with adjustable capacity.
Background technology
Development along with mobile communications industry, the radio frequency resource is more and more nervous, the frequency range that each communication system is used is more and more approaching, can interfere with each other easily and cause the communication equipment cisco unity malfunction, this requires the resonant cavity filter passband that adjacent passband is had very high Out-of-band rejection requirement, such as duplexer, need at least the above inhibition requirement of 85dB between transmission channel and receive path.And realize that higher Out-of-band rejection is by introducing capacitive or inductive coupledly produce a plurality of transmission zeros and realize between a plurality of non-adjacent resonators.The implementation of conventional inductive coupled structure can be regulated the coupling amount, is conducive to the batch production of product, but and the implementation of conventional capacitive coupling structure does not possess regulatory function.
The conventional capacitive coupling structure mode that most of resonant cavity filter of the prior art is taked: realize capacitive coupling by a coupling dumbbell is installed between non-adjacent two resonators, the length by adjusting dumbbell and sectional area are regulated the coupling amount and are satisfied the requirement of Out-of-band rejection degree.When prototype debug, need to reserve dumbbell length and sectional area in order to batch production according to Out-of-band rejection.And when the product batch, can cause the coupled structure size to optimize and revise owing to manufacturing tolerance, thick when not having sample such as cavity silver coating thickness, cause the passband insertion loss bad, interim counter-measure is that change optimization capacitive coupling structure size is adjusted the debugging pass band width.So often cover plate must be pulled down the cavity that has assembled and adjust or change the dumbbell size, give to produce to assemble and cause great trouble, and might cause the waste of material.
Existing notification number is the China's Mainland patent of CN201117780, electromagnetic coupling structure between a kind of resonator is provided, comprising two resonant cavitys, in resonant cavity, be placed with a resonator, and adjacent at two resonant cavitys, has a dividing wall between the two, on dividing wall, offer mounting groove, in mounting groove, install coupled structure, wherein coupled structure comprises plastic parts and sheet metal, this supporter is installed in the mounting groove, and this sheet metal is applied on the plastic parts, and the two ends of sheet metal are located at respectively in two resonant cavitys.Though although in the above-mentioned coupled structure sheet metal simple, easily be shaped and adjustable range large, and brought convenience for the design of filter and cavity layout to a certain extent, but, in case with cover plate assemble intact after, increase again or when turning coupling down and measuring to satisfy the requirement of Out-of-band rejection degree such as needs, the very trouble that will seem is debugged, assembled to the dismounting cover plate again, and might cause the waste of material.
Therefore, still there is disappearance in technique scheme, shows the filter coupling structure with adjustable capacity after need design a kind of the improvement, to overcome above-mentioned deficiency.
Summary of the invention
Embodiment of the invention technical problem to be solved is to provide a kind of simple, easy shaping, can realizes the filter coupling structure with adjustable capacity that filter is regulated and adjustable range is large in the situation of not dismounting, satisfies the requirement of Out-of-band rejection degree.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of filter coupling structure with adjustable capacity, be installed in the cavity with at least two resonant cavitys, comprise a coupled structure, be opened between the resonant cavity that it has plastic parts and sheet metal, sheet metal partly is included in the plastic parts, and sheet metal centre both sides extend upward two opposed protuberances, and wherein, protuberance is included in the plastic parts; The first adjusting screw(rod) runs through cover plate, and cover plate and cavity cooperatively interact, and the first adjusting screw(rod) is located between the two opposed protuberances.
Preferably, the sheet metal two ends bend downward vertically, and from sheet metal centre both sides the parallel a junction that respectively extends, form two opposed protuberances by the connecting portion vertical bending that makes progress.
Preferably, cavity is provided with at least two resonant cavitys, and each resonant cavity one resonant rod, one second adjusting screw(rod) insert resonant rod in order to regulate resonant rod.
Preferably, also be provided with a rhombus platform on the bottom surface of described resonant cavity enclosing region, the rhombus platform is inserted for coupled structure.
Preferably, also be provided with a kidney-shaped platform on the bottom surface of described resonant cavity enclosing region, the kidney-shaped platform is inserted for described coupled structure.
Preferably, the first adjusting screw(rod) is in order to regulate plastic parts; Corresponding each resonant rod is provided with one second adjusting screw(rod) and runs through cover plate, in order to regulate resonant rod.
By above technical scheme, the present invention has following beneficial effect:
1. described filter coupling structure with adjustable capacity adopts and partly is included in sheet metal on the plastic parts, to realize that coupled structure is installed between the resonant cavity to reach the effect of mutually insulated, simultaneously, when debugging at the first adjusting screw(rod) between the protuberance, the possibility of short circuit can not appear also.
2. pass through the length of change adjusting screw(rod) above protuberance to regulate the coupling amount, dismounting cover plate when needing having avoided adjusting coupling amount, thus bring great convenience for follow-up production.
Description of drawings
Fig. 1 is that the filter that the embodiment of the invention provides is installed intact schematic diagram;
Fig. 2 is the present invention's filter decomposing schematic representation shown in Figure 1;
Fig. 3 is adjustability coupled structure schematic diagram in the present invention's filter shown in Figure 2;
Fig. 4 is the schematic diagram that filter of the present invention is not installed cover plate;
Fig. 5 is the vertical view of Fig. 4 of the present invention;
Fig. 6 is the cutaway view of C-C direction among Fig. 5 of the present invention;
Fig. 7 is the cutaway view of D-D direction among Fig. 5 of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Consult Fig. 1, shown in Figure 2, it is preferred embodiment of the present invention, take a concrete coaxial cavity band pass filter as example, it comprises a cavity 1, a coupled structure 2, a cover plate 3, most nut 4, the first adjusting screw(rod) 5 and the second adjusting screw(rod) 6 that connects cover plate 3 and cavity 1.
See also Fig. 3, described coupled structure 2, this coupled structure 2 has a plastic parts 21 and a sheet metal 22, plastic parts 21 is located (mode that also can play in other embodiments screw is fastening) by the rhombus platform 12 of cavity 1 bottom surface with interference fit, wherein, these plastic parts 21 materials can adopt PEI, PPO, PPS etc.Described sheet metal 22 adopts copper sheet, it is injected and molded in the described plastic parts 21, sheet metal 22 two ends bend (in other embodiments downward vertically, sheet metal 22 two ends can require to carry out the bending of all angles according to the characteristics of different resonators), and from the parallel a junction 221 that respectively extends in sheet metal 22 centre both sides, the connecting portion 221 vertical bending that makes progress forms two opposed protuberances 222, and such as Fig. 6, shown in Figure 7, this protuberance 222 all is included in the plastic parts 21.
Consult Fig. 4, Fig. 5, the used filter of coupling structure with adjustable capacity in the embodiment of the invention comprises a cavity 1, and described cavity 1 offers four resonant cavitys 11; A coupled structure 2, be opened between four resonant cavitys 11, coupled structure 2 has a plastic parts 21 and a sheet metal 22, and the part of sheet metal 22 is included in the described plastic parts 21, and described sheet metal 22 centre both sides extend upward two opposed protuberances 222; One first adjusting screw(rod) 5 runs through a cover plate 3, and described cover plate 3 cooperatively interacts with described cavity 1, and described the first adjusting screw(rod) 5 is located between the two opposed described protuberances 222.
See also Fig. 6, Fig. 7, cover plate 3 is assembled together by most screws and cavity 1, the first adjusting screw(rod) 5 runs through cover plate 3, insert in plastic parts 21 by its turn, insertion along with the first adjusting screw(rod) 5, namely from the peak of this first adjusting screw(rod) 5 by protuberance 222 to minimum point, namely the coupling amount of sheet metal 22 is carried out needed adjustment.The second adjusting screw(rod) 6 runs through cover plate 3, and inserts resonant rod 111 in order to regulate resonant rod 111.
The embodiment of the invention and prior art difference are: extend upward two opposed protuberances 222 in sheet metal 22 centre both sides, and announcement changes the length of the first adjusting screw(rod) 5 in protuberance 222, can realize that thus this filter capacitive coupling adjustable range in the situation of not dismounting is large, satisfy the requirement of Out-of-band rejection degree with this.
When this filter coupling structure with adjustable capacity is installed, at first, rhombus platform 12 by cavity 1 bottom surface is located plastic parts 21 with interference fit, then cover cover plate 3 and use screw lock, the first adjusting screw(rod) 5, the second adjusting screw(rod) 6 are packed on the cover plate 3 in the corresponding screwed hole (shown in Fig. 6,7) and debug, use nut check after debugging is finished.
The present invention has following beneficial effect:
1. described filter coupling structure with adjustable capacity adopts and partly is included in sheet metal on the plastic parts, to realize that coupled structure is installed between the resonant cavity to reach the effect of mutually insulated, simultaneously, when debugging at the first adjusting screw(rod) between the protuberance, the possibility of short circuit can not appear also.
2. pass through the length of change adjusting screw(rod) above protuberance to regulate the coupling amount, dismounting cover plate when needing having avoided adjusting coupling amount, thus bring great convenience for follow-up production.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a filter coupling structure with adjustable capacity is installed in the cavity with at least two resonant cavitys, it is characterized in that, comprising:
One coupled structure is opened between the described resonant cavity, and it has a plastic parts and a sheet metal, described sheet metal partly is included in the described plastic parts, and described sheet metal centre both sides extend upward two opposed protuberances, and wherein, described protuberance is included in the described plastic parts;
One first adjusting screw(rod) runs through a cover plate, and described cover plate and described cavity cooperatively interact, and an end of described the first adjusting screw(rod) is located between the two opposed described protuberances.
2. filter coupling structure with adjustable capacity as claimed in claim 1, it is characterized in that: described sheet metal two ends bend downward vertically, and from the parallel a junction that respectively extends in described sheet metal centre both sides, form two opposed described protuberances by the vertical bending that makes progress of this connecting portion.
3. filter coupling structure with adjustable capacity as claimed in claim 1, it is characterized in that: described cavity is provided with at least two resonant cavitys, and each described resonant cavity comprises a resonant rod, and one second adjusting screw(rod) inserts described resonant rod in order to regulate described resonant rod.
4. filter coupling structure with adjustable capacity as claimed in claim 3, it is characterized in that: also be provided with a rhombus platform on the bottom surface of described resonant cavity enclosing region, described rhombus platform is inserted for described coupled structure.
5. filter coupling structure with adjustable capacity as claimed in claim 3, it is characterized in that: also be provided with a kidney-shaped platform on the bottom surface of described resonant cavity enclosing region, described kidney-shaped platform is inserted for described coupled structure.
6. filter coupling structure with adjustable capacity as claimed in claim 3, it is characterized in that: described the first adjusting screw(rod) is in order to regulate described plastic parts; Corresponding each described resonant rod is provided with one second adjusting screw(rod) and runs through described cover plate, in order to regulate described resonant rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010521628 CN101964439B (en) | 2010-10-27 | 2010-10-27 | Filter coupling structure with adjustable capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010521628 CN101964439B (en) | 2010-10-27 | 2010-10-27 | Filter coupling structure with adjustable capacity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101964439A CN101964439A (en) | 2011-02-02 |
| CN101964439B true CN101964439B (en) | 2013-01-23 |
Family
ID=43517245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010521628 Active CN101964439B (en) | 2010-10-27 | 2010-10-27 | Filter coupling structure with adjustable capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101964439B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102569978A (en) * | 2011-12-20 | 2012-07-11 | 摩比天线技术（深圳）有限公司 | Dielectric resonator tuning structure and tuning method |
| CN102544658A (en) * | 2012-01-10 | 2012-07-04 | 深圳市大富科技股份有限公司 | Cavity filter and cross-coupling structure of cavity filter |
| CN102751554A (en) * | 2012-06-29 | 2012-10-24 | 摩比天线技术（深圳）有限公司 | Mixed-mode filter |
| WO2014047820A1 (en) * | 2012-09-26 | 2014-04-03 | 华为技术有限公司 | Cavity filter |
| CN103441317B (en) * | 2013-09-05 | 2015-07-15 | 宁波泰立电子科技有限公司 | Cavity filter with rotation adjustable loop |
| FI127061B (en) | 2014-05-23 | 2017-10-31 | Tongyu Tech Oy | Control element for radio frequency resonator |
| CN106169638B (en) * | 2016-08-30 | 2019-10-11 | 广东通宇通讯股份有限公司 | A kind of filter and its coupled structure |
| CN107104257A (en) * | 2017-06-15 | 2017-08-29 | 深圳市国人射频通信有限公司 | Integrated adjustable capacitive cross coupling assembly and cavity body filter |
| CN110534857B (en) * | 2019-07-26 | 2024-04-16 | 苏州诺泰信通讯有限公司 | Adjustable capacitive coupling structure |
| CN111066198B (en) * | 2019-09-27 | 2020-11-13 | 摩比天线技术（深圳）有限公司 | Ceramic dielectric filter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2812313Y (en) * | 2005-06-01 | 2006-08-30 | 摩比天线技术（深圳）有限公司 | A cross coupling trimming device |
| CN2847557Y (en) * | 2005-11-28 | 2006-12-13 | 浙江三维通信股份有限公司 | Chamber filter with adjustable capacitor coupling structure |
| CN200962447Y (en) * | 2006-09-29 | 2007-10-17 | 深圳国人通信有限公司 | Built-in coaxial cavity band resistance filter of the transmission line |
-
2010
- 2010-10-27 CN CN 201010521628 patent/CN101964439B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2812313Y (en) * | 2005-06-01 | 2006-08-30 | 摩比天线技术（深圳）有限公司 | A cross coupling trimming device |
| CN2847557Y (en) * | 2005-11-28 | 2006-12-13 | 浙江三维通信股份有限公司 | Chamber filter with adjustable capacitor coupling structure |
| CN200962447Y (en) * | 2006-09-29 | 2007-10-17 | 深圳国人通信有限公司 | Built-in coaxial cavity band resistance filter of the transmission line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101964439A (en) | 2011-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101964439B (en) | Filter coupling structure with adjustable capacity | |
| CN109088152B (en) | Antenna system and mobile terminal | |
| US10873119B2 (en) | Filter and wireless network device | |
| CN201163655Y (en) | Coupling band-pass filter with adjustable capacitance | |
| CN200997430Y (en) | Sensitive coupling structure between coaxial cavity resonater and filter therewith | |
| KR101437796B1 (en) | Coupling mechanism for a pcb mounted microwave re-entrant resonant cavity | |
| CN110265755A (en) | A kind of dielectric waveguide filter | |
| CN103201897A (en) | Cavity filter | |
| CN102544650A (en) | Coaxial resonant cavity mixed coupling method | |
| CN201117780Y (en) | Coaxial cavity resonator coupled structure | |
| CN202564511U (en) | K-wave band broadband band-pass filter | |
| CN104143675B (en) | Cross-linked bandpass filter and its design method | |
| CN211719756U (en) | Filter and communication equipment | |
| EP3371849A1 (en) | A ridge waveguide to a partial h-plane waveguide transition | |
| CN204230392U (en) | A kind of filter | |
| CN205921059U (en) | Cavity filter who contains adjustable capacitance coupling structure | |
| CN205211900U (en) | Multistage tunable filter of single chamber multifrequency | |
| CN114039186A (en) | Branch resonator and miniaturized filter | |
| CN115997320A (en) | Dielectric filter and AU, RU or BS having the same | |
| CN116529952A (en) | Dielectric filter | |
| CN112768855A (en) | High-performance miniaturized base station antenna built-in cavity duplexer | |
| CN107658533B (en) | Band elimination filter and radio frequency device | |
| CN202633479U (en) | Coupled structure of cavity filter | |
| CN113131148A (en) | Communication device and filter thereof | |
| CN201000917Y (en) | Coupled structure between coaxial cavity resonators |
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: 20211014 Address after: 518000 Mobi Building, No. 17, Science and Technology North Road, Xili Street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: MOBI ANTENNA TECHNOLOGIES (SHENZHEN) Co.,Ltd. Patentee after: MOBI TECHNOLOGY (SHENZHEN) Co.,Ltd. Patentee after: MOBI TELECOMMUNICATIONS TECHNOLOGIES (JI'AN) Co.,Ltd. Patentee after: MOBI TECHNOLOGIES (XI'AN) Co.,Ltd. Patentee after: Shenzhen Shengyu Wisdom Network Technology Co.,Ltd. Patentee after: Xi'an Mobi Antenna Technology Engineering Co.,Ltd. Address before: 518057 Guangdong city of Shenzhen province Nanshan District high tech Industrial Park North Long Hill Road Building mobi Patentee before: MOBI ANTENNA TECHNOLOGIES (SHENZHEN) Co.,Ltd. |
|
| TR01 | Transfer of patent right |