CN207353438U - Electromagnetism hybrid coupled cavity body filter - Google Patents
Electromagnetism hybrid coupled cavity body filter Download PDFInfo
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- CN207353438U CN207353438U CN201721358664.0U CN201721358664U CN207353438U CN 207353438 U CN207353438 U CN 207353438U CN 201721358664 U CN201721358664 U CN 201721358664U CN 207353438 U CN207353438 U CN 207353438U
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Abstract
The utility model discloses electromagnetism hybrid coupled cavity body filter, cavity including tuning screw and cuboid, further include at least one hybrid coupled unit, wherein, hybrid coupled unit includes two the first resonators, and the bottom of two first resonators is connected by connecting pole, first resonator includes resonant column and resonance plate, resonant column in all hybrid coupled units is vertically set on cavity inner wall side by side along cavity length direction, resonance plate is connected to the open end of the first resonator, the cross-sectional area of resonance plate is more than the cross-sectional area of resonant column, tuning screw is oppositely arranged with the first resonator.Trap can be introduced in passband edge, so that filter stop bend suppression is improved, and wave filter is reduced using exponent number, reduces wave filter Insertion Loss, can effectively reduce the length dimension of wave filter；It is electrically coupled by adjusting, magnetic-coupled size, trap can be moved to suitable position, maneuverability is high, and Structural assignments are simple, are more advantageous to reducing the size.
Description
Technical field
It the utility model is related to wave filter technology field, more particularly to electromagnetism hybrid coupled cavity body filter.
Background technology
Wave filter is electronic component indispensable in microwave telecommunication system, its performance determines the quality of communication system.
With the innovation of the communication technology, harsher requirement is proposed to performance of filter, such as：Small size, filter with low insertion loss, high selection
Property, far parasitized band-pass etc..Cavity body filter is made of tuning screw, resonator, housing etc., with other types wave filter phase
Than with sound construction, reliability is high, stability is good, and Insertion Loss is small, thermal diffusivity is good, bears the features such as power is high, is widely used in
In field of microwave communication.
Stopband suppression is an important parameter of cavity body filter, in the prior art, generally by increasing filter order
Number suppresses to improve the stopband of cavity body filter, however, as the Insertion Loss of the raising wave filter of exponent number can be raised accordingly, and meeting
The volume of cavity body filter is become larger, be unfavorable for the miniaturization of cavity body filter.
Therefore, the utility model discloses a kind of new cavity body filter structure, in the case where reducing filter order
The stopband for lifting cavity body filter suppresses, so as to reduce the Insertion Loss of cavity body filter, reduces the volume of cavity body filter, realizes chamber
The miniaturization of fluid filter.
Utility model content
For deficiencies of the prior art, the technical problems to be solved in the utility model is：How filter is being reduced
The stopband that cavity body filter is lifted in the case of ripple device exponent number suppresses, so as to reduce the Insertion Loss of cavity body filter, reduces cavity filter
The volume of ripple device, realizes the miniaturization of cavity body filter.
In order to solve the above technical problems, the utility model employs following technical solution：
Electromagnetism hybrid coupled cavity body filter, including the cavity of tuning screw and cuboid, further include at least one mixing
Coupling unit, wherein：
The hybrid coupled unit includes two the first resonators, and the bottom of two first resonators passes through connecting pole
Connection；
First resonator includes resonant column and resonance plate, and the resonant column in all hybrid coupled units is along the cavity
Length direction is vertically set on the cavity inner wall side by side, and the resonance plate is connected to the open end of first resonator,
The cross-sectional area of the resonance plate is more than the cross-sectional area of the resonant column；
The tuning screw is oppositely arranged with first resonator.
Preferably, the second resonator is further included, second resonator is grown with the hybrid coupled unit along the cavity
Degree direction is vertically set on the cavity inner wall side by side, and the tuning screw is oppositely arranged with second resonator.
Preferably, second resonator is cube.
Preferably, the resonant column and the resonance plate are cube.
Preferably, second resonator is connected with the adjacent hybrid coupled unit bottom by the connecting pole,
Adjacent second resonator bottom is connected by the connecting pole.
Preferably, installed on the cavity and mounting groove is provided with the outer surface of the tuning screw, the mounting groove
Depth is more than the height that the tuning screw stretches out the installation groove bottom, is provided with and the tuning screw in the mounting groove
The threaded hole of cooperation, is filled with conducting resinl between the gap between the tuning screw and the threaded hole, filling in the mounting groove
There is epoxy glue.
Preferably, after the electromagnetism hybrid coupled cavity body filter debugging, by conductive glue in the tuning spiral shell
The threaded portion of nail, the threaded hole is screwed into by the tuning screw, after conductive adhesive curing, the ring type filling in the mounting groove
Oxygen glue.
In conclusion the utility model discloses electromagnetism hybrid coupled cavity body filter, including tuning screw and cuboid
Cavity, further include at least one hybrid coupled unit, wherein, hybrid coupled unit includes two the first resonators, and this two
The bottom of a first resonator is connected by connecting pole, and the first resonator includes resonant column and resonance plate, all hybrid coupled lists
Resonant column in member is vertically set on cavity inner wall side by side along cavity length direction, and resonance plate is connected to opening for the first resonator
Terminal, the cross-sectional area of resonance plate are more than the cross-sectional area of resonant column, and tuning screw is oppositely arranged with the first resonator.Can be
Passband edge introduces trap, so that filter stop bend suppression is improved, and wave filter is reduced using exponent number, is reduced wave filter and is inserted
Damage, can effectively reduce the length dimension of wave filter；It is electrically coupled, magnetic-coupled size, trap can be moved to by adjusting
Suitable position, maneuverability is high, and Structural assignments are simple, are more advantageous to reducing the size.
Brief description of the drawings
It is new to this practicality below in conjunction with attached drawing in order to make the purpose, technical scheme and advantage of utility model clearer
Type is described in further detail, wherein：
Fig. 1 is the profile of electromagnetism hybrid coupled cavity body filter disclosed in the utility model；
The structure diagram of hybrid coupled unit disclosed in the utility model of Fig. 2 positions；
Fig. 3 is that trap is located at electromagnetism hybrid coupled cavity body filter wave filter upper side band when magnetic coupling is more than electric coupling
Design sketch；
Fig. 4 be when be electrically coupled be more than magnetic coupling when, trap is located at electromagnetism hybrid coupled cavity body filter wave filter lower sideband
Design sketch.
Figure label and the correspondence of title are：1 cavity, 2 hybrid coupled units, 3 connecting poles, 4 second resonators, 5
Tuning screw, 6 epoxy glues, 21 resonant columns, 22 resonance plates.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figures 1 and 2, the utility model discloses a kind of 1 wave filter of electromagnetism hybrid coupled cavity, including tuning spiral shell
The cavity 1 of nail 5 and cuboid, further includes at least one hybrid coupled unit 2, wherein：
Hybrid coupled unit 2 includes two the first resonators, and the bottom of two first resonators is connected by connecting pole 3
Connect；
First resonator includes resonant column 21 and resonance plate 22, and the resonant column 21 in all hybrid coupled units 2 is along cavity 1
Length direction is vertically set on 1 inner wall of cavity side by side, and resonance plate 22 is connected to the open end of the first resonator, resonance plate 22
Cross-sectional area is more than the cross-sectional area of resonant column 21；
Tuning screw 5 is oppositely arranged with the first resonator.
1 wave filter of electromagnetism hybrid coupled cavity disclosed in the utility model, can include one or more hybrid coupled lists
Member 2, wherein, all 21 equal pectinations of resonant column are arranged on inside cavity 1, and the open end of the first resonator is resonance plate 22, are adjusted
Humorous screw 5 is provided on the opposite inner wall of connected 1 inner wall of cavity of resonant column 21, and the number of tuning screw 5 and position with
Resonance plate 22 is opposite.The height of each connecting pole 3 can be different.
In a hybrid coupled unit 2, the open end of two the first resonators is electrically coupled by two resonance plates 22, bottom
Portion can adjust the size being electrically coupled by adjusting the size of resonance plate 22, can also pass through tune by 3 magnetic coupling of connecting pole
The height for saving connecting pole 3 adjusts magnetic-coupled size, is electrically coupled and magnetic-coupled size controls trap by adjusting respectively
Position.When magnetic coupling be more than be electrically coupled when, trap be located at wave filter upper side band as shown in figure 3, when be electrically coupled be more than magnetic coupling when,
Trap is located at wave filter lower sideband as shown in figure 4, S1 curves is using the simulation curves of electromagnetism hybrid coupled structure.S2 curves
To introduce the simulation curve of electromagnetism hybrid coupled structure.S3 curves are the return loss of wave filter.Pass through contrast, the introducing of trap
The stopband for improving respective filter passband edge suppresses.In present specification, upper side band refers to one higher than centre frequency
Side stopband suppresses, and lower sideband refers to suppress less than one side stopband of centre frequency.
In conclusion the utility model discloses a kind of 1 wave filter of electromagnetism hybrid coupled cavity, including tuning screw 5 and
The cavity 1 of cuboid, further includes at least one hybrid coupled unit 2, wherein, hybrid coupled unit 2 includes two the first resonance
Device, and the bottom of two first resonators is connected by connecting pole 3, the first resonator includes resonant column 21 and resonance plate 22,
Resonant column 21 in all hybrid coupled units 2 is vertically set on 1 inner wall of cavity side by side along 1 length direction of cavity, resonance plate
22 are connected to the open end of the first resonator, and the cross-sectional area of resonance plate 22 is more than the cross-sectional area of resonant column 21, tuning screw 5
It is oppositely arranged with the first resonator.Trap can be introduced in passband edge, so that filter stop bend suppression is improved, and wave filter
Reduced using exponent number, reduce wave filter Insertion Loss, the length dimension of wave filter can be effectively reduced；It is electrically coupled by adjusting, magnetic
Trap, can be moved to suitable position, maneuverability is high, and Structural assignments are simple, are more advantageous to contracting by the size of coupling
Small size.
For further optimization above-mentioned technical proposal, 1 wave filter of electromagnetism hybrid coupled cavity, is also wrapped disclosed in the utility model
The second resonator 4 is included, the second resonator 4 is vertically set on 1 inner wall of cavity side by side with hybrid coupled unit along 1 length direction of cavity
On, tuning screw is oppositely arranged with the second resonator 4.
Second resonator 4 and the first resonator pectination are arranged on inside cavity 1, position and the resonance plate 22 of tuning screw 5
It is opposite with the position of the second resonator 4, and the number of tuning screw is equal to the total number of the first resonator and the second resonator 4,
I.e. each resonator has its opposite tuning screw 5.Because the structure of the second resonator 4 is more simple compared with the first resonator
Single, easier to process, debugging, therefore, in the case where meeting performance requirement, can use hybrid coupled unit and the second resonator
The mode that 4 mixing are set, so as to reduce the manufacture cost of 1 wave filter of electromagnetism hybrid coupled cavity.The introducing of hybrid coupled unit
Number is determined according to the actual index performance that wave filter needs to realize.
For further optimization above-mentioned technical proposal, the second resonator 4 is cube, and resonant column 21 and resonance plate 22 are cube
Body.
Using cubical resonator compared with using the resonator of cylinder, easy to mechanical linear cutter, and for
The utilization in space is more abundant in cavity 1, can further reduce resonant frequency, because cavity body filter frequency is lower, size is got over
Greatly, resonant frequency is reduced, it is possible to achieve the miniaturization of low frequency cavity.
For further optimization above-mentioned technical proposal, the second resonator 4 passes through with adjacent hybrid coupled unit bottom to be connected
Column 3 connects, and adjacent 4 bottom of the second resonator is connected by connecting pole 3.
Second resonator 4 and the second resonator 4, between the second resonator 4 and the first resonator also can use connecting pole 3 into
Row connection, so as to reach the magnetic-coupled effect of enhancing, by adjusting the height connected, can adjust magnetic-coupled size, often
The height of a connecting pole 3 can be different.
Further to optimize above-mentioned technical proposal, installed on cavity 1 and be provided with mounting groove on the outer surface of tuning screw 5,
The depth of mounting groove is more than the height that tuning screw 5 stretches out installation groove bottom, is provided with what is coordinated with tuning screw 5 in mounting groove
Threaded hole, conducting resinl is filled between the gap between tuning screw 5 and threaded hole, epoxy glue 6 is filled with mounting groove.
Tuning screw 5 is fixed using conducting resinl, improves the reliability of 1 wave filter of electromagnetism hybrid coupled cavity, air-tightness.
Tuning screw 5 is fixed in the form of epoxy glue 6 is filled in mounting groove again, compared with the mode that nut fixes tuning screw 5, greatly
Amplitude reduces 1 filter shape size of electromagnetism hybrid coupled cavity.
The method and step of specific fixed tuning screw 5 includes：, will after 1 wave filter of electromagnetism hybrid coupled cavity is debugged
Tuning screw 5 is threaded into hole, after conductive adhesive curing, in mounting groove by conductive glue in the threaded portion of tuning screw 5
Interior filling epoxy glue 6.
Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although logical
The preferred embodiment crossed with reference to the utility model has been described the utility model, but those of ordinary skill in the art
It should be appreciated that various changes can be made to it in the form and details, without departing from the appended claims institute
The spirit and scope of the utility model of restriction.
Claims (6)
1. electromagnetism hybrid coupled cavity body filter, including the cavity of tuning screw and cuboid, it is characterised in that further include at least
One hybrid coupled unit, wherein：
The hybrid coupled unit includes two the first resonators, and the bottom of two first resonators is connected by connecting pole
Connect；
First resonator includes resonant column and resonance plate, and the resonant column in all hybrid coupled units is along the cavity length
Direction is vertically set on the cavity inner wall side by side, and the resonance plate is connected to the open end of first resonator, described
The cross-sectional area of resonance plate is more than the cross-sectional area of the resonant column；
The tuning screw is oppositely arranged with first resonator.
2. electromagnetism hybrid coupled cavity body filter as claimed in claim 1, it is characterised in that further include the second resonator, institute
The second resonator is stated to be vertically set on side by side on the cavity inner wall along the cavity length direction with the hybrid coupled unit,
The tuning screw is oppositely arranged with second resonator.
3. electromagnetism hybrid coupled cavity body filter as claimed in claim 2, it is characterised in that second resonator is cube
Body.
4. such as claim 1-3 any one of them electromagnetism hybrid coupled cavity body filters, it is characterised in that the resonant column and
The resonance plate is cube.
5. electromagnetism hybrid coupled cavity body filter as claimed in claim 2, it is characterised in that second resonator with it is adjacent
The hybrid coupled unit bottom connected by the connecting pole, adjacent second resonator bottom passes through the connection
Column connects.
6. electromagnetism hybrid coupled cavity body filter as claimed in claim 1, it is characterised in that the tune is installed on the cavity
Mounting groove is provided with the outer surface of humorous screw, the depth of the mounting groove is more than the tuning screw and stretches out the mounting groove bottom
The height in face, the threaded hole coordinated with the tuning screw, the tuning screw and the screw thread are provided with the mounting groove
Conducting resinl is filled between gap between hole, epoxy glue is filled with the mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721358664.0U CN207353438U (en) | 2017-10-20 | 2017-10-20 | Electromagnetism hybrid coupled cavity body filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721358664.0U CN207353438U (en) | 2017-10-20 | 2017-10-20 | Electromagnetism hybrid coupled cavity body filter |
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| Publication Number | Publication Date |
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| CN207353438U true CN207353438U (en) | 2018-05-11 |
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| CN201721358664.0U Active CN207353438U (en) | 2017-10-20 | 2017-10-20 | Electromagnetism hybrid coupled cavity body filter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108933311A (en) * | 2018-07-02 | 2018-12-04 | 湖北楚航电子科技有限公司 | A kind of cavity body filter of multi-resmator combination |
| CN111709154A (en) * | 2020-07-21 | 2020-09-25 | 成都镭迪昇科技有限公司 | Design method for generating transmission zero point by hybrid electromagnetic coupling in cavity filter |
| CN113675554A (en) * | 2021-08-26 | 2021-11-19 | 深圳国人科技股份有限公司 | Coaxial cavity filter |
| CN115241618A (en) * | 2022-07-29 | 2022-10-25 | 西安空间无线电技术研究所 | Frequency-dependent cross-coupled coaxial filter and design method thereof |
| CN115714247A (en) * | 2022-11-23 | 2023-02-24 | 中国电子科技集团公司第二十六研究所 | Miniaturized high-rectangular cavity filter |
-
2017
- 2017-10-20 CN CN201721358664.0U patent/CN207353438U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108933311A (en) * | 2018-07-02 | 2018-12-04 | 湖北楚航电子科技有限公司 | A kind of cavity body filter of multi-resmator combination |
| CN108933311B (en) * | 2018-07-02 | 2020-08-11 | 湖北楚航电子科技有限公司 | Cavity filter combined by multiple resonators |
| CN111709154A (en) * | 2020-07-21 | 2020-09-25 | 成都镭迪昇科技有限公司 | Design method for generating transmission zero point by hybrid electromagnetic coupling in cavity filter |
| CN113675554A (en) * | 2021-08-26 | 2021-11-19 | 深圳国人科技股份有限公司 | Coaxial cavity filter |
| CN115241618A (en) * | 2022-07-29 | 2022-10-25 | 西安空间无线电技术研究所 | Frequency-dependent cross-coupled coaxial filter and design method thereof |
| CN115241618B (en) * | 2022-07-29 | 2024-05-03 | 西安空间无线电技术研究所 | Frequency-variable cross-coupling coaxial filter and design method thereof |
| CN115714247A (en) * | 2022-11-23 | 2023-02-24 | 中国电子科技集团公司第二十六研究所 | Miniaturized high-rectangular cavity filter |
| CN115714247B (en) * | 2022-11-23 | 2024-04-12 | 中国电子科技集团公司第二十六研究所 | Miniaturized high-rectangular cavity filter |
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