CN206878148U - Adjustable waveguide filter - Google Patents
Adjustable waveguide filter Download PDFInfo
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- CN206878148U CN206878148U CN201720726179.8U CN201720726179U CN206878148U CN 206878148 U CN206878148 U CN 206878148U CN 201720726179 U CN201720726179 U CN 201720726179U CN 206878148 U CN206878148 U CN 206878148U
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- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 abstract description 4
- 230000033228 biological regulation Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000005611 electricity Effects 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
- 238000002955 isolation Methods 0.000 description 1
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Abstract
The utility model discloses a kind of adjustable waveguide filter, including cavity, the input being arranged on cavity, output end, and at least two resonator, tuning screw is provided with resonator, the dielectric rod of shift frequency effect has been additionally provided with each resonator, dielectric rod stretches into the adjustable length of resonator, at least two dielectric rods are driven by same drive device, the utility model is adjusted by the frequency of the multiple resonators of transmission mechanism Synchronization Control, reduce the quantity of motor, not only greatly reduce the cost of wave filter, and simplify the structure of wave filter, improve degree of regulation, reduce the volume and weight of wave filter.
Description
Technical field
It the utility model is related to a kind of passive device wave filter, more particularly to a kind of adjustable waveguide filter.
Background technology
In the communications field, wave filter is widely used as a kind of frequency selection device, wherein, waveguide filter is in the modern times
There is the important work of frequency-selecting, frequency dividing and isolation signals etc. in the systems such as microwave communication, satellite communication, radar and remote sensing and telemetry
With its performance quality directly influences the running quality of system.Waveguide filter typically uses cavity body structure, and a cavity can
It is equivalent into inductance in parallel electric capacity, form a resonance level, reach filter function.The frequency band of conventional waveguide wave filter is all to fix not
Adjustable, designed frequency band range is when dispatching from the factory it has been determined that can not meet needed for special circumstances.With existing microwave environment
Complicate, frequency spectrum resource is increasingly nervous, and some areas are badly in need of wanting one kind can be in not same district for the frequency spectrum resource in utilization space
The screening requirement of different frequency range is realized in domain, and tunable filter arises at the historic moment.
With the fast development of passive device technology, a kind of motor-driven adjustable waveguide filter is widely used, and is led to
The rotating of control stepper motor is crossed to control the depth for adjusting spiral shell to enter resonator, and then the purpose of tuned frequency, control
Convenient and precision is higher.
CN204130671 discloses a kind of electrically tunable filter structure, and each resonance chamber is correspondingly arranged an automatic lifting
Mechanism, one micro machine is installed in the tune Luo tops of each waveguide resonant cavity, Luo depth is each adjusted with this motor control,
It is adjustable so as to reach waveguide filter curve, make each resonator be tuned to needed for frequency, precision improve.It will be apparent that with
The increase of filter order, needs same amount of motor to be controlled, is increased sharply the cost of tunable filter, volume
Greatly, weight is big, simultaneously as the influence of the modulated spiral shell of frequency of each resonator is very big, in order to accurately control the position of each tune spiral shell
Put and depth, the required precision to motor is very high, causes the cost of such wave filter very high.
Utility model content
The purpose of the utility model is for overcome the deficiencies in the prior art, there is provided a kind of control accuracy is high, and cost is relatively low
Adjustable waveguide filter.
To reach above-mentioned purpose, the utility model proposes following technical scheme：A kind of adjustable waveguide filter, including chamber
Body, the input, output end being arranged on the cavity, and at least two connected with the input, the output end
Resonator, tuning screw is provided with the resonator, the dielectric rod of shift frequency effect has been additionally provided with each resonator, it is described
The adjustable length that dielectric rod is stretched into the resonator, at least two dielectric rods are driven by same drive device.
Preferably, the drive device includes motor and transmission mechanism, and transmission mechanism described in the motor driven moves, extremely
Few two dielectric rods are connected with the transmission mechanism.
Preferably, the transmission mechanism includes drive screw and slide bar, and the drive screw is under the driving of the motor
Rotate, the slide bar is threadedly coupled with the drive screw, and the slide bar moves along the drive screw, at least two media
Rod is connected with the slide bar.
Preferably, the transmission mechanism also includes guide rod, and the guide rod be arranged in parallel with the drive screw, described
Jack rod sleeve slides on the guide rod, and along the guide rod.
Preferably, the cavity close to the transmission mechanism side cavity wall on formed with the dielectric rod quantity
Consistent via, the dielectric rod are extended in corresponding resonator by the via.
Preferably, the dielectric rod is vertically arranged with the tuning screw.
Preferably, All Media rod drives by the drive device.
Preferably, the resonator is waveguide cavity.
Preferably, dielectric rod direction stretching motion axially along.
The utility model is adjusted by the frequency of the multiple resonators of transmission mechanism Synchronization Control, makes each resonator same
When be tuned to needed for frequency, reduce the quantity of motor, not only greatly reduce the cost of wave filter, and simplify
The structure of wave filter, degree of regulation is improved, reduce the volume and weight of wave filter.
Brief description of the drawings
Fig. 1 is the utility model internal structure Local map.
Reference：1st, cavity, 10, input, 2, resonator, 20, output end, 3, tuning screw, 4, dielectric rod, 5, electricity
Machine, 6, transmission mechanism, 61, drive screw, 62, guide rod, 63, slide bar.
Embodiment
Design, concrete structure and caused technique effect of the present utility model are carried out below with reference to embodiment and accompanying drawing
Clearly and completely describe, to be completely understood by the purpose of this utility model, feature and effect.
As shown in figure 1, the tunable filter of the present embodiment includes cavity 1, resonator 2, tuning screw 3, dielectric rod 4, drive
Dynamic device and signal input part 10 and signal output part 20, the top surface of the cavity 1 have opening, and remaining side is envelope
Close, the top surface of cavity 1 is covered on a cover plate (not shown), form the cavity of closing.It is humorous that at least two are formed in cavity
Shaken chamber 2, specially waveguide cavity configuration, and three cavity resonator structures are shown in figure, and in practice, resonator can be circular cavity, also may be used
To be rectangular cavity.Tuning screw 3 and dielectric rod 4 are provided with each resonator, the dielectric rod 4 is used for by stretching into resonator
The fine setting or perturbation of resonant frequency are realized in the change of length.The drive device drives multiple media by a motor
Rod, compared with traditional each resonator must match somebody with somebody a motor, the utility model motor usage quantity is obvious
Reduce, cost significantly reduces.
During waveguide filter work that this is adjustable, signal is entered by waveguide input 10, after passing sequentially through three resonators 2,
After having filtered out useless frequency component of the band outside in addition to the resonant frequency of resonator 2, left with interior useful signal by waveguide output end 20.
When needing to adjust the frequency values for changing useful passband, by the rotation traction traction of motor 5, drive dielectric rod 4 change its enter it is humorous
Shake the length of chamber 2, so as to which perturbation changes the resonant frequency of three resonators 2, the useful signal passband of output end 20 changes therewith
Become, it is achieved thereby that waveguide filter passband start-stop frequency is adjustable.
Specifically, the drive device includes motor 5 and transmission mechanism 6, and the transmission mechanism 6 includes drive screw
61st, guide rod 62 and slide bar 63, the drive screw outer surface are helicitic texture, and the drive screw is defeated with the motor 5
Shaft is axially connected, and the drive screw 61 is rotated by the motor 5, the guide rod 62 and the drive screw
61 be arranged in parallel, and the slide bar 63 is rod-like structure, and it is provided with screwed hole close to one end of the drive screw 61, make its with
The drive screw 61 is threadedly coupled, and its other end is set in the outside of the guide rod, and slides and connect with the guide rod 63
Connect.When so motor works, the drive screw 61 is driven to rotate, the slide bar 63 is along the drive screw 61 and guide rod 62
Move up and down.
Described one end of dielectric rod 4 connects the slide bar 63, and its other end extends into phase through the via on cavity wall
In the resonator 2 answered, a kind of Medium perturbation structure is formed, it is necessary to which explanation, the via are formed at the cavity close to institute
The side of transmission mechanism is stated, the diameter of via may insure that the dielectric rod can move freely in direction axially along, its quantity
It is consistent with the quantity of the dielectric rod.Consider the change of resonator q and the size of frequency-tunable scope, and structure
Feasibility, this programme are disposed vertically using dielectric rod 4 with the tuning screw 3, certainly, optionally, dielectric rod and tuning
Screw can also form subvertical angle and place.And the selection of dielectric material similarly have followed the principle of compositionality of the above,
When larger frequency range tunes, the limited decline of the Q value of cavity, not have a strong impact on filter insertion loss.
In the present embodiment, All Media rod is all connected with the drive device (slide bar), realizes that filter passband is integrally put down
Move；Optionally or each motor drive part dielectric rod, other dielectric rods are driven by additional motor.
The utility model drives drive screw to rotate to an angle by drive motor, and the dielectric rod being enclosed on screw rod will be same
When deeply certain length in corresponding resonator, the resonant frequency of adjustable waveguide filter decrease certain specific Frequency point,
The utility model leaves behind a micro machine, significantly reduces cost, suppressing due to eliminating most of high-precision micro machine
It is resonator increased amount of today, higher using more advantage, reliability it is required that increasingly harsh；Additionally, due to dielectric rod can
Stroke is adjusted to be noticeably greater than the stroke that tradition adjusts Luo, the required precision to motor significantly reduces；Further, due to adjusting frequency with dielectric rod
Rate, will not because contact surface is not close and caused by intermodulation deteriorate.
Embodiment described above only expresses specific embodiment of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to the utility model patent scope.It should be pointed out that for the common of this area
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (9)
1. a kind of adjustable waveguide filter, including cavity, the input, output end that is arranged on the cavity, and with it is described
Input, at least two resonators of output end connection, it is characterised in that tuning screw is provided with the resonator,
It has been additionally provided with the dielectric rod that shift frequency acts in each resonator, the adjustable length that the dielectric rod is stretched into the resonator,
At least two dielectric rods are driven by same drive device.
2. adjustable waveguide filter according to claim 1, it is characterised in that the drive device includes motor and transmission
Mechanism, transmission mechanism described in the motor driven are moved, and at least two dielectric rods are connected with the transmission mechanism.
3. adjustable waveguide filter according to claim 2, it is characterised in that the transmission mechanism include drive screw and
Slide bar, the drive screw are rotated by the motor, and the slide bar is threadedly coupled with the drive screw, the cunning
Bar is moved along the drive screw, and at least two dielectric rods are connected with the slide bar.
4. adjustable waveguide filter according to claim 3, it is characterised in that the transmission mechanism also includes guide rod,
The guide rod is be arranged in parallel with the drive screw, and the jack rod sleeve is slided on the guide rod, and along the guide rod
It is dynamic.
5. adjustable waveguide filter according to claim 2, it is characterised in that the cavity is close to the transmission mechanism
Extended to correspondingly by the via formed with the via consistent with the dielectric rod quantity, the dielectric rod on the cavity wall of side
Resonator in.
6. adjustable waveguide filter according to claim 1 or 5, it is characterised in that the dielectric rod and the tuning spiral shell
Nail is vertically arranged.
7. adjustable waveguide filter according to claim 1, it is characterised in that All Media rod is by the drive device
Driving.
8. adjustable waveguide filter according to claim 1, it is characterised in that the resonator is waveguide cavity.
9. adjustable waveguide filter according to claim 1, it is characterised in that the dielectric rod axially along stretch by direction
Contracting motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720726179.8U CN206878148U (en) | 2017-06-21 | 2017-06-21 | Adjustable waveguide filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720726179.8U CN206878148U (en) | 2017-06-21 | 2017-06-21 | Adjustable waveguide filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206878148U true CN206878148U (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720726179.8U Active CN206878148U (en) | 2017-06-21 | 2017-06-21 | Adjustable waveguide filter |
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| Country | Link |
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| CN (1) | CN206878148U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103554A (en) * | 2017-06-21 | 2018-12-28 | 罗森伯格技术（昆山）有限公司 | adjustable waveguide filter |
| CN109244619A (en) * | 2018-11-02 | 2019-01-18 | 江苏贝孚德通讯科技股份有限公司 | Fold cavity coated by dielectric tunable filter, duplexer |
| WO2019109735A1 (en) * | 2017-12-05 | 2019-06-13 | 罗森伯格技术（昆山）有限公司 | Waveguide filter having adjustable bandwidth |
| CN112072225A (en) * | 2020-09-10 | 2020-12-11 | 衡阳市衡山科学城科技创新服务有限公司 | Ceramic dielectric waveguide filter for 5G base station and preparation method thereof |
-
2017
- 2017-06-21 CN CN201720726179.8U patent/CN206878148U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103554A (en) * | 2017-06-21 | 2018-12-28 | 罗森伯格技术（昆山）有限公司 | adjustable waveguide filter |
| WO2019109735A1 (en) * | 2017-12-05 | 2019-06-13 | 罗森伯格技术（昆山）有限公司 | Waveguide filter having adjustable bandwidth |
| CN109244619A (en) * | 2018-11-02 | 2019-01-18 | 江苏贝孚德通讯科技股份有限公司 | Fold cavity coated by dielectric tunable filter, duplexer |
| CN109244619B (en) * | 2018-11-02 | 2024-05-10 | 江苏贝孚德通讯科技股份有限公司 | Folding cavity medium loading adjustable filter and duplexer |
| CN112072225A (en) * | 2020-09-10 | 2020-12-11 | 衡阳市衡山科学城科技创新服务有限公司 | Ceramic dielectric waveguide filter for 5G base station and preparation method thereof |
| CN112072225B (en) * | 2020-09-10 | 2021-11-02 | 衡阳市衡山科学城科技创新服务有限公司 | Ceramic dielectric waveguide filter for 5G base station and preparation method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Kunshan Dianshan Lake Town City Suzhou city Jiangsu province 215345 Shen road, No. 6 Patentee after: Rosenberg Technology Co.,Ltd. Address before: Suzhou City, Jiangsu province 215300 city of Kunshan province Shen Jiangsu Dianshan Lake Town Road No. 6 Patentee before: ROSENBERGER TECHNOLOGY ( KUNSHAN) Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 215300 No.6 Shen'an Road, Dianshanhu Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: ProLogis Communication Technology (Suzhou) Co.,Ltd. Address before: 215345 No. 6 Shen'an Road, Dianshan Lake Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: Rosenberg Technology Co.,Ltd. |