CN101964439A - Filter coupling structure with adjustable capacity - Google Patents
Filter coupling structure with adjustable capacity Download PDFInfo
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- CN101964439A CN101964439A CN2010105216288A CN201010521628A CN101964439A CN 101964439 A CN101964439 A CN 101964439A CN 2010105216288 A CN2010105216288 A CN 2010105216288A CN 201010521628 A CN201010521628 A CN 201010521628A CN 101964439 A CN101964439 A CN 101964439A
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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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 the adjustable capacitive coupled structure of a kind of filter.
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 to have very high band to suppress requirement outward to adjacent passband, as duplexer, need the above inhibition requirement of 85dB between transmission channel and receive path at least.And realize that outer inhibition of higher band 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, helps the batch process of product, and the implementation of conventional capacitive coupled structure does not possess the scalable function.
The conventional capacitive coupled structure mode that most of resonant cavity filter of the prior art is taked: realize the capacitive coupling by a coupling dumbbell is installed between non-adjacent two resonators, length by adjusting dumbbell and sectional area are regulated the coupling amount and are satisfied inhibition degree requirement outside the band.When prototype debug, need reserve dumbbell length and prepare against batch process with sectional area according to the outer inhibition of band.And when product lot quantity, can cause the coupled structure size to optimize and revise owing to manufacturing tolerance, thick when not having sample as cavity silver coating thickness, cause passband insertion loss bad, interim counter-measure is that change optimization capacitive coupled structure size is adjusted the debugging pass band width.So often cover plate must be pulled down and adjust or change the dumbbell size, give to produce to assemble and cause great trouble, and might cause the waste of material the cavity that has assembled.
Existing notification number is the China's Mainland patent of CN201117780, electromagnetic coupled between a kind of resonator structure is provided, comprising two resonant cavitys, in resonant cavity, be placed with a resonator, and it is 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 though in the above-mentioned coupled structure sheet metal simple, easily be shaped and adjustable range big, and brought convenience for Filter Design and cavity layout to a certain extent, but, in case with cover plate assemble intact after, increase again or turn the coupling amount down when satisfying the outer inhibition degree requirement of band 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 adjustable capacitive coupled structure of filter 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 adjustable capacitive coupled structure of filter that filter is regulated and adjustable range is big under the situation of not dismounting, satisfies inhibition degree requirement outside the band.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of filter adjustable capacitive coupled structure, 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; First adjusting screw(rod) runs through cover plate, and cover plate and cavity cooperatively interact, and 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 waist shape platform on the bottom surface of described resonant cavity enclosing region, waist shape platform is inserted for described coupled structure.
Preferably, 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. capacitive coupled structure that described filter is adjustable 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 first adjusting screw(rod) between the protuberance, the possibility of short circuit can not appear also.
2. the length by changing adjusting screw(rod) above protuberance to be regulating the coupling amount, dismounting cover plate when having avoided needing to regulate the 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 an 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,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Consult Fig. 1, shown in Figure 2, it is preferred embodiment of the present invention, with a concrete coaxial cavity band pass filter is example, and it comprises a cavity 1, a coupled structure 2, a cover plate 3, most nut 4, first adjusting screw(rod) 5 and 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 screw in other embodiments 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 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 adjustable capacitive coupled structure comprises a cavity 1 in the embodiment of the invention, 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 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, first adjusting screw(rod) 5 runs through cover plate 3, insert in the plastic parts 21 by its turn, insertion along with first adjusting screw(rod) 5, promptly from the peak of this first adjusting screw(rod) 5 by protuberance 222 to minimum point, promptly the coupling amount of sheet metal 22 is carried out needed adjustment.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 first adjusting screw(rod) 5 in protuberance 222, can realize that thus this filter capacitive coupling regulating range under the situation of not dismounting is big, satisfy the outer inhibition degree requirement of band with this.
When the adjustable capacitive coupled structure of this filter is installed, at first, rhombus platform 12 by cavity 1 bottom surface is located plastic parts 21 with interference fit, cover cover plate 3 then and use screw lock, first adjusting screw(rod) 5, second adjusting screw(rod) 6 are packed on the cover plate 3 in the respective threads hole (shown in Fig. 6,7) and debug, use nut check after debugging is finished.
The present invention has following beneficial effect:
1. capacitive coupled structure that described filter is adjustable 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 first adjusting screw(rod) between the protuberance, the possibility of short circuit can not appear also.
2. the length by changing adjusting screw(rod) above protuberance to be regulating the coupling amount, dismounting cover plate when having avoided needing to regulate the coupling amount, thus bring great convenience for follow-up production.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done 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. the adjustable capacitive coupled structure of filter 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 described first adjusting screw(rod) is located between the two opposed described protuberances.
2. the adjustable capacitive coupled structure of filter as claimed in claim 1, it is characterized in that: described sheet metal two ends bend downward vertically, and, form two opposed described protuberances by the vertical bending that makes progress of this connecting portion from the parallel a junction that respectively extends in described sheet metal centre both sides.
3. the adjustable capacitive coupled structure of filter 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. the adjustable capacitive coupled structure of filter as claimed in claim 3 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. the adjustable capacitive coupled structure of filter as claimed in claim 3 is characterized in that: also be provided with a waist shape platform on the bottom surface of described resonant cavity enclosing region, described waist shape platform is inserted for described coupled structure.
6. the adjustable capacitive coupled structure of filter as claimed in claim 3 is characterized in that: described 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010521628 CN101964439B (en) | 2010-10-27 | 2010-10-27 | Filter coupling structure with adjustable capacity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010521628 CN101964439B (en) | 2010-10-27 | 2010-10-27 | Filter coupling structure with adjustable capacity |
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| CN101964439A true CN101964439A (en) | 2011-02-02 |
| CN101964439B CN101964439B (en) | 2013-01-23 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN102751554A (en) * | 2012-06-29 | 2012-10-24 | 摩比天线技术（深圳）有限公司 | Mixed-mode filter |
| CN103201897A (en) * | 2012-09-26 | 2013-07-10 | 华为技术有限公司 | Cavity filter |
| CN103441317A (en) * | 2013-09-05 | 2013-12-11 | 宁波泰立电子科技有限公司 | Cavity filter with rotation adjustable loop |
| CN106169638A (en) * | 2016-08-30 | 2016-11-30 | 广东通宇通讯股份有限公司 | A kind of wave filter and coupled structure thereof |
| 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 |
| US10056666B2 (en) | 2014-05-23 | 2018-08-21 | Tongyu Technology Oy | Tuning element for radio frequency resonator |
| CN110534857A (en) * | 2019-07-26 | 2019-12-03 | 苏州诺泰信通讯有限公司 | A kind of adjustable capacitive coupling structure |
| CN111066198A (en) * | 2019-09-27 | 2020-04-24 | 摩比天线技术（深圳）有限公司 | Ceramic dielectric filter |
| CN113708035A (en) * | 2020-05-22 | 2021-11-26 | 大富科技(安徽)股份有限公司 | Filter and communication equipment |
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 |
Cited By (17)
| 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 |
| CN103201897A (en) * | 2012-09-26 | 2013-07-10 | 华为技术有限公司 | Cavity filter |
| CN103201897B (en) * | 2012-09-26 | 2015-05-06 | 华为技术有限公司 | Cavity filter |
| CN103441317A (en) * | 2013-09-05 | 2013-12-11 | 宁波泰立电子科技有限公司 | Cavity filter with rotation adjustable loop |
| 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 |
| US10056666B2 (en) | 2014-05-23 | 2018-08-21 | Tongyu Technology Oy | Tuning 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 |
| CN106169638A (en) * | 2016-08-30 | 2016-11-30 | 广东通宇通讯股份有限公司 | A kind of wave filter and coupled structure thereof |
| 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 |
| CN110534857A (en) * | 2019-07-26 | 2019-12-03 | 苏州诺泰信通讯有限公司 | A kind of adjustable capacitive coupling structure |
| CN110534857B (en) * | 2019-07-26 | 2024-04-16 | 苏州诺泰信通讯有限公司 | Adjustable capacitive coupling structure |
| CN111066198A (en) * | 2019-09-27 | 2020-04-24 | 摩比天线技术（深圳）有限公司 | Ceramic dielectric filter |
| CN111066198B (en) * | 2019-09-27 | 2020-11-13 | 摩比天线技术（深圳）有限公司 | Ceramic dielectric filter |
| WO2021056415A1 (en) * | 2019-09-27 | 2021-04-01 | 摩比天线技术（深圳）有限公司 | Ceramic dielectric filter |
| CN113708035A (en) * | 2020-05-22 | 2021-11-26 | 大富科技(安徽)股份有限公司 | Filter and communication equipment |
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| CN101964439B (en) | 2013-01-23 |
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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. |
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