CN102751554A - Mixed-mode filter - Google Patents
Mixed-mode filter Download PDFInfo
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- CN102751554A CN102751554A CN2012102224864A CN201210222486A CN102751554A CN 102751554 A CN102751554 A CN 102751554A CN 2012102224864 A CN2012102224864 A CN 2012102224864A CN 201210222486 A CN201210222486 A CN 201210222486A CN 102751554 A CN102751554 A CN 102751554A
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- 239000002184 metal Substances 0.000 claims abstract description 77
- 230000008878 coupling Effects 0.000 claims description 39
- 238000010168 coupling process Methods 0.000 claims description 39
- 238000005859 coupling reaction Methods 0.000 claims description 39
- 230000008859 change Effects 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 4
- 230000005764 inhibitory process Effects 0.000 description 3
- 230000001808 coupling effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion 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
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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Abstract
The invention relates to a radio-frequency and microwave filter in the communication field, which provides a mixed-mode filter. The mixed-mode filter comprises a cavity and a cover plate covering on the cavity, wherein a metal resonant cavity and a medium resonant cavity are arranged in the cavity; the inside of the metal resonant cavity and the medium resonant cavity is respectively provided with a metal resonant bar and a medium resonant block; a coupled assembly is arranged between the metal resonant cavity and the medium resonant cavity; and electromagnetic wave between the metal resonant cavity and the medium resonant cavity can be coupled by the arranged coupled assembly so as to realize the effect that two resonant modes of the metal resonant cavity and the medium resonant cavity are coupled.
Description
Technical field
The present invention relates to radio frequency and microwave filter in the communications field, relate in particular to a kind of mixed mode filter.
Background technology
Along with the growth at full speed of mobile communication business, wave frequency resource growing tension, the frequency range that each communication system is used is dwindled at interval day by day.Q value height in view of dielectric resonant chamber filter; Can carry out higher inhibition to the electromagnetic wave of adjacent band and keep less consumption in the passband simultaneously; Therefore be the electromagnetic phase mutual interference that effectively suppresses successive bands, increasing filter, duplexer working medium resonant cavity filter in the communication system.
Because higher mode (mould outside the TE01) frequency of dielectric resonant chamber filter is nearer apart from main mould (TE01 mould), so dielectric resonant chamber filter need be used with the metal resonant cavity filter of a frequency band broad to realize the inhibition to higher mode usually.
Because the coupling between dielectric resonant chamber and two kinds of different modes of resonance of metal resonant cavity can not be taked to realize coupling through the method for windowing between the chamber between the model identical, therefore realize that the coupling between dielectric resonant chamber and two kinds of different modes of resonance of metal resonant cavity becomes new technical problem.
Summary of the invention
The object of the present invention is to provide a kind of mixed mode filter, be intended to solve the coupling problems between dielectric resonant chamber and two kinds of different modes of resonance of metal resonant cavity.
The present invention adopts following technical scheme:
A kind of mixed mode filter; Comprise that cavity and lid are located at the cover plate on the said cavity; Be provided with metal resonant cavity and dielectric resonant chamber in the said cavity; Be respectively arranged with metal resonant rod and dielectric resonance piece in said metal resonant cavity and the said dielectric resonant chamber, be provided with the coupling assembly of said metal resonant cavity of coupling and said dielectric resonant chamber between said metal resonant cavity and the said dielectric resonant chamber.
Said coupling assembly comprises and is connected in metalwork said metal resonant cavity and said dielectric resonant chamber, coupling said metal resonant cavity and said dielectric resonant chamber.
First end in contact of said metalwork or do not contact or around in the said metal resonant cavity of being arranged at of said metal resonant rod, second end in contact or do not contact or being arranged in the dielectric resonant chamber around said dielectric resonance piece.
The middle part of said metalwork is provided with circular slot;
Said coupling assembly also comprises the tuning screw rod of coupling; The tuning screw rod of said coupling runs through said cover plate and inserts in the said circular slot; The tuning screw rod of said coupling and said cover plate be through being threaded, can screw in back-out with change insert said circular slot the degree of depth to regulate the coupling amount of said metalwork.
Be provided with in the middle of said metal resonant cavity and the said dielectric resonant chamber and window.
Said coupling assembly also comprises plastic parts, and said plastic parts is arranged at said windowing, and the middle part of said metalwork is arranged in the said plastic parts and through said plastic parts is fixed in said windowing.
Also be provided with tuning screw rod in the said metal resonant cavity; Said tuning screw rod runs through cover plate and inserts in the metal resonant rod; Said tuning screw rod and said cover plate can screw in back-out to change the degree of depth of inserting the metal resonant rod and then the resonance frequency of regulating the metal resonant rod through being threaded.
Also be provided with tuning block in the said dielectric resonant chamber; Said tuning block runs through cover plate and is arranged at dielectric resonance piece top; Said tuning block and said cover plate can screw in back-out to change and the distance of dielectric resonance piece and then the resonance frequency of regulating the dielectric resonance piece through being threaded.
Said metalwork is sheet metal or metal wire or wire.
Said metalwork and said plastic parts are through integrated through injection molding formation.
A kind of mixed mode filter provided by the invention; Comprise that cavity and lid are located at the cover plate on the said cavity; Be provided with metal resonant cavity and dielectric resonant chamber in the said cavity; Be respectively arranged with metal resonant rod and dielectric resonance piece in said metal resonant cavity and the dielectric resonant chamber; Be provided with coupling assembly between said metal resonant cavity and the dielectric resonant chamber,, thereby solved the coupling problems between metal resonant cavity and two kinds of different modes of resonance of dielectric resonant chamber through the coupling assembly that the is provided with electromagnetic wave between said metal resonant cavity and the said dielectric resonant chamber that to be coupled.
Description of drawings
The vertical view of the mixed mode filter that Fig. 1 provides for the embodiment of the invention (plate not with cover);
The vertical view of the metalwork of the mixed mode filter that Fig. 2 provides for the embodiment of the invention;
The cutaway view of A-A direction among Fig. 1 that Fig. 3 provides for the embodiment of the invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and specific embodiment the present invention is done to describe in further detail.Should be appreciated that specific embodiment described herein only is used to explain the present invention, is not limited to the present invention.
A kind of mixed mode filter provided by the invention; In cavity, be provided with metal resonant cavity and dielectric resonant chamber; Be respectively arranged with metal resonant rod and dielectric resonance piece in metal resonant cavity and the dielectric resonant chamber, through the coupling assembly that the is provided with electromagnetic wave between metal resonant cavity and the dielectric resonant chamber that to be coupled.
With reference to Fig. 1, Fig. 2 and Fig. 3; The mixed mode filter that the embodiment of the invention provides; Comprise that cavity 1 and lid are located at the cover plate 2 on the cavity 1, it is characterized in that, be provided with metal resonant cavity 11 and dielectric resonant chamber 12 in the cavity 1; Be respectively arranged with metal resonant rod 111 and dielectric resonance piece 121 in metal resonant cavity 11 and the dielectric resonant chamber 12, be provided with the coupling assembly 13 of coupling metal resonant cavity 11 and dielectric resonant chamber 12 between metal resonant cavity 11 and the dielectric resonant chamber 12.
First end in contact of metalwork 131 or do not contact or around being arranged in the metal resonant cavity 11 of metal resonant rod 111, second end in contact or do not contact or being arranged in the dielectric resonant chamber 12 around dielectric resonance piece 112.
In the present embodiment, first end of metalwork 131 contacts with metal resonant rod 111, and fixes through modes such as screw, rivet or welding, and its welding is fixing can adopt the fixed form shown in solder joint 134; Second end of metalwork 131 is discontiguous to be surrounded on around the dielectric resonance piece 121, the effect that can be coupled according to actual needs be provided with sheet metal 131 around the girth of dielectric resonance piece 121 or sheet metal 131 and dielectric resonance piece 121 over against area.
As the further improvement of present embodiment, the middle part of metalwork 131 is provided with circular slot 1311; Coupling assembly 13 also comprises the tuning screw rod 132 of coupling; The tuning screw rod 132 that is coupled runs through cover plate 2 and inserts in the circular slot 1311; Be coupled tuning screw rod 132 and cover plate 2 through being threaded, can screw in back-out with change insert circular slot 1311 the degree of depth to regulate the coupling amount of metalwork 131.
Metal resonant cavity 11 windows 3 with dielectric resonant chamber 12 middle being provided with.
Further improvement as present embodiment; Also be provided with tuning screw rod 112 in the metal resonant cavity 11; Tuning screw rod 112 runs through cover plate 2 and inserts in the metal resonant rod 111; Tuning screw rod 112 and cover plate 2 can screw in back-out to change the degree of depth of inserting metal resonant rod 111 and then the resonance frequency of regulating metal resonant rod 111 through being threaded.
Further improvement as present embodiment; Also be provided with tuning block 122 in the dielectric resonant chamber 12; Tuning block 122 runs through cover plate 2 and is arranged at medium resonant rod 121 tops; Tuning block 122 and cover plate 2 can screw in back-out to change and the distance of medium resonant rod 121 and then the resonance frequency of regulating medium resonant rod 121 through being threaded.
From the consideration of aspects such as coupling effect and manufacturing cost, related metalwork 131 is sheet metal or metal wire or wire in the embodiment of the invention.
From the consideration of aspects such as coupling effect and manufacturing cost and practical application, metalwork 131 passes through integrated through injection molding formation with plastic parts 133.
The mixed mode filter that the embodiment of the invention provides; Comprise that cavity 1 and lid are located at the cover plate 2 on the cavity 1; Be provided with metal resonant cavity 11 and dielectric resonant chamber 12 in the cavity 1; Be respectively arranged with metal resonant rod 111 and medium resonant rod 121 in metal resonant cavity 11 and the dielectric resonant chamber 12, be provided with coupling assembly 13 between metal resonant cavity 11 and the dielectric resonant chamber 12; Through the coupling assembly 13 that the is provided with electromagnetic wave between metal resonant cavity 11 and the dielectric resonant chamber 12 that to be coupled, thereby solved the coupling problems between dielectric resonant chamber 12 and 11 two kinds of different modes of resonance of metal resonant cavity.Simultaneously, this mixed mode filter can guarantee the Insertion Loss of passband and the rejection of adjacent band, again the medium higher mode is had certain inhibition.
In addition; The mixed mode filter that the embodiment of the invention provides; Thereby in research and development, processing, produce when the dimensional parameters equal error occurring and causing the performance of mixing mode filter, can make the various performance parameters when mixing mode filter and satisfying its design through regulating tuning screw rod 112, tuning block 122 or the tuning screw rod 133 that is coupled.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within principle of the present invention, being done, is equal to replacement and improvement etc., all should be included within the scope of the present invention's protection.
Claims (10)
1. mixed mode filter; Comprise that cavity (1) and lid are located at the cover plate (2) on the said cavity (1); It is characterized in that; Be provided with metal resonant cavity (11) and dielectric resonant chamber (12) in the said cavity (1); Be respectively arranged with metal resonant rod (111) and dielectric resonance piece (121) in said metal resonant cavity (11) and the said dielectric resonant chamber (12), be provided with the coupling assembly (13) of coupling said metal resonant cavity (11) and said dielectric resonant chamber (12) between said metal resonant cavity (11) and the said dielectric resonant chamber (12).
2. mixed mode filter as claimed in claim 1; It is characterized in that said coupling assembly (13) comprises and is connected in metalwork (131) said metal resonant cavity (11) and said dielectric resonant chamber (12), coupling said metal resonant cavity (11) and said dielectric resonant chamber (12).
3. mixed mode filter as claimed in claim 2; It is characterized in that; First end in contact of said metalwork (131) or do not contact or around in the said metal resonant cavity of being arranged at of said metal resonant rod (111) (11), second end in contact or do not contact or being arranged in the dielectric resonant chamber (12) around said dielectric resonance piece (112).
4. mixed mode filter as claimed in claim 2 is characterized in that, the middle part of said metalwork (131) is provided with circular slot (1311);
Said coupling assembly (13) also comprises coupling tuning screw rod (132); The tuning screw rod of said coupling (132) runs through said cover plate (2) and inserts in the said circular slot (1311); The tuning screw rod of said coupling (132) and said cover plate (2) be through being threaded, can screw in back-out with change insert said circular slot (1311) the degree of depth to regulate the coupling amount of said metalwork (131).
5. mixed mode filter as claimed in claim 1 is characterized in that, is provided with in the middle of said metal resonant cavity (11) and the said dielectric resonant chamber (12) window (3).
6. like claim 2 or 5 described mixed mode filters; It is characterized in that; Said coupling assembly (13) also comprises plastic parts (133); Said plastic parts (133) is arranged at said windowing (3), and the middle part of said metalwork (131) is arranged in the said plastic parts (133) and is fixed in said windowing (3) through said plastic parts (133).
7. mixed mode filter as claimed in claim 1; It is characterized in that; Also be provided with tuning screw rod (112) in the said metal resonant cavity (11); Said tuning screw rod (112) runs through cover plate (2) and inserts in the metal resonant rod (111), and said tuning screw rod (112) and said cover plate (2) can screw in back-out to change the degree of depth of inserting metal resonant rod (111) and then the resonance frequency of regulating metal resonant rod (111) through being threaded.
8. mixed mode filter as claimed in claim 1; It is characterized in that; Also be provided with tuning block (122) in the said dielectric resonant chamber (12); Said tuning block (122) runs through cover plate (2) and is arranged at dielectric resonance piece (121) top, and said tuning block (122) and said cover plate (2) can screw in back-out to change and the distance of dielectric resonance piece (121) and then the resonance frequency of adjusting dielectric resonance piece (121) through being threaded.
9. like claim 1-4 each or the described mixed mode filter of claim 6, it is characterized in that said metalwork (131) is sheet metal or metal wire or wire.
10. mixed mode filter as claimed in claim 6 is characterized in that, said metalwork (131) passes through integrated through injection molding formation with said plastic parts (133).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102224864A CN102751554A (en) | 2012-06-29 | 2012-06-29 | Mixed-mode filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102224864A CN102751554A (en) | 2012-06-29 | 2012-06-29 | Mixed-mode filter |
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| CN102751554A true CN102751554A (en) | 2012-10-24 |
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| CN2012102224864A Pending CN102751554A (en) | 2012-06-29 | 2012-06-29 | Mixed-mode filter |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201448A (en) * | 2014-09-10 | 2014-12-10 | 江苏贝孚德通讯科技股份有限公司 | Inductive coupling structure of dielectric filter |
| CN104600402A (en) * | 2014-12-31 | 2015-05-06 | 深圳市大富科技股份有限公司 | Filter and duplexer with same |
| CN104767016A (en) * | 2015-03-31 | 2015-07-08 | 南通大学 | Differential band-pass filter based on TE01delta mode dielectric resonators |
| CN104900952A (en) * | 2015-06-23 | 2015-09-09 | 武汉凡谷陶瓷材料有限公司 | Coupling structure of dual-mode medium resonator and metal resonator |
| CN105846023A (en) * | 2016-04-11 | 2016-08-10 | 宁波华瓷通信技术有限公司 | TE mode medium filter |
| CN106356596A (en) * | 2016-09-26 | 2017-01-25 | 湖南基石通信技术有限公司 | Tuning-screw-based three-cavity filter |
| WO2020135514A1 (en) * | 2018-12-29 | 2020-07-02 | 华为技术有限公司 | Filter and base station |
| CN111384537A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Cavity filter and radio frequency communication equipment |
| CN112736386A (en) * | 2020-12-30 | 2021-04-30 | 东莞鸿爱斯通信科技有限公司 | Cavity filter |
| CN113904077A (en) * | 2020-06-22 | 2022-01-07 | 大富科技(安徽)股份有限公司 | Communication device and filter thereof |
| WO2023142706A1 (en) * | 2022-01-29 | 2023-08-03 | 普罗斯通信技术（苏州）有限公司 | Metal injection-molded filter and manufacturing method |
Citations (3)
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| KR20030078346A (en) * | 2002-03-29 | 2003-10-08 | 주식회사 에이스테크놀로지 | Resonator with multi-resonation mode and multi-mode band pass filter using it |
| CN101964439A (en) * | 2010-10-27 | 2011-02-02 | 摩比天线技术（深圳）有限公司 | Filter coupling structure with adjustable capacity |
| CN202103148U (en) * | 2011-05-20 | 2012-01-04 | 京信通信系统（中国）有限公司 | Coupling structure of dielectric resonator and coaxial cavity resonator |
-
2012
- 2012-06-29 CN CN2012102224864A patent/CN102751554A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030078346A (en) * | 2002-03-29 | 2003-10-08 | 주식회사 에이스테크놀로지 | Resonator with multi-resonation mode and multi-mode band pass filter using it |
| CN101964439A (en) * | 2010-10-27 | 2011-02-02 | 摩比天线技术（深圳）有限公司 | Filter coupling structure with adjustable capacity |
| CN202103148U (en) * | 2011-05-20 | 2012-01-04 | 京信通信系统（中国）有限公司 | Coupling structure of dielectric resonator and coaxial cavity resonator |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201448A (en) * | 2014-09-10 | 2014-12-10 | 江苏贝孚德通讯科技股份有限公司 | Inductive coupling structure of dielectric filter |
| CN104600402A (en) * | 2014-12-31 | 2015-05-06 | 深圳市大富科技股份有限公司 | Filter and duplexer with same |
| CN104600402B (en) * | 2014-12-31 | 2019-11-26 | 深圳市大富科技股份有限公司 | A kind of filter and the duplexer with the filter |
| CN104767016A (en) * | 2015-03-31 | 2015-07-08 | 南通大学 | Differential band-pass filter based on TE01delta mode dielectric resonators |
| CN104900952B (en) * | 2015-06-23 | 2018-06-15 | 武汉凡谷陶瓷材料有限公司 | The coupled structure of bimodulus dielectric resonator and metal resonators |
| CN104900952A (en) * | 2015-06-23 | 2015-09-09 | 武汉凡谷陶瓷材料有限公司 | Coupling structure of dual-mode medium resonator and metal resonator |
| CN105846023A (en) * | 2016-04-11 | 2016-08-10 | 宁波华瓷通信技术有限公司 | TE mode medium filter |
| CN106356596A (en) * | 2016-09-26 | 2017-01-25 | 湖南基石通信技术有限公司 | Tuning-screw-based three-cavity filter |
| WO2020135514A1 (en) * | 2018-12-29 | 2020-07-02 | 华为技术有限公司 | Filter and base station |
| CN111384537A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Cavity filter and radio frequency communication equipment |
| CN113904077A (en) * | 2020-06-22 | 2022-01-07 | 大富科技(安徽)股份有限公司 | Communication device and filter thereof |
| CN112736386A (en) * | 2020-12-30 | 2021-04-30 | 东莞鸿爱斯通信科技有限公司 | Cavity filter |
| WO2023142706A1 (en) * | 2022-01-29 | 2023-08-03 | 普罗斯通信技术（苏州）有限公司 | Metal injection-molded filter and manufacturing method |
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Application publication date: 20121024 |