CN110247142A - Filter - Google Patents
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- CN110247142A CN110247142A CN201910566931.0A CN201910566931A CN110247142A CN 110247142 A CN110247142 A CN 110247142A CN 201910566931 A CN201910566931 A CN 201910566931A CN 110247142 A CN110247142 A CN 110247142A
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- Prior art keywords
- tube
- filter
- bottom plate
- resonator
- connection sheet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
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Abstract
The present invention relates to a kind of filter, which includes shell, the first tube, resonator and the second tube, and shell includes bottom plate, side plate and cover board, offers through-hole on cover board.By changing the liquid volume in the first tube, so that the dielectric constant in the first tube changes, therefore, so that the effective wavelength in filter changes, so as to adjust the resonance frequency in filter；By changing the liquid volume in the second tube, so that the dielectric constant in the second tube changes, therefore, so that the stiffness of coupling in filter changes, to the resonance frequency in separation filter, so that filter keeps fractional bandwidth constant in the case where resonance frequency changes.By adjusting the resonance frequency in filter, filter is applied under different scenes, this improves the applicabilities of filter.
Description
Technical field
The present invention relates to electronic component field more particularly to a kind of filters.
Background technique
Microwave filter is a kind of device for separating different microwave frequencies, it is able to suppress unwanted frequency letter
Number and frequency signal required for only allowing passes through, play very important effect in the transmitting terminal of communication system and receiving end.And
Traditional microwave filter once completes the process, and the passband of microwave filter (filter can by frequency range) is also just solid
It is fixed, cause existing microwave filter applicability poor.
Summary of the invention
The main purpose of the present invention is to provide a kind of filters, it is intended to it is poor to solve filter applicability in the prior art
The technical issues of.
In order to solve the above technical problem, the present invention provides technical solution are as follows:
A kind of filter, comprising: shell, the shell are hollow structure, and the shell includes bottom plate, side plate and cover board,
The side plate is fixed on bottom plate, and the cover board is fixed on side plate, wherein offers through-hole on the cover board；First tubulose
Object, first tube are fixed on bottom plate；Resonator, the resonator are located on the first tube；Second tube, institute
One end sealing of the second tube is stated, second tube passes through through-hole and is located at one end of sealing on bottom plate.
Wherein, the filter further includes probe, and first through hole is offered on the bottom plate, and the probe is logical across first
The connection of hole resonator.
Wherein, the probe is differential probe.
Wherein, the filter further includes the first connection sheet, and the first connection sheet resonator is fixedly connected, the spy
Head is fixedly connected with the first connection sheet.
Wherein, the filter further includes the second connection sheet and supporting element, and the second connection sheet resonator is fixed to be connected
It connects, second connection sheet is fixed on bottom plate by supporting element.
Wherein, first tube is of an L-shaped structure, and lacking for adaptation first tube is offered on the side plate
Mouthful, by the both ends of the first tube of notch clamping on side plate, so that the first tube is fixed on bottom plate.
Wherein, the quantity of first tube and the resonator is two, wherein first tube
It is located at the side of bottom plate with the resonator, another first tube and the resonator are located at the other side of bottom plate.
Wherein, the shell is made of metal material.
Wherein, first tube and second tube are made of plastic material.
Wherein, one end of second tube is sealed by hot melt adhesive.
The invention has the benefit that by changing the liquid volume in the first tube, so that in the first tube
Dielectric constant changes, therefore, so that the effective wavelength in filter changes, so as to adjust the resonance frequency in filter
Rate；Therefore, made by changing the liquid volume in the second tube so that the dielectric constant in the second tube changes
The stiffness of coupling obtained in filter changes, thus the resonance frequency in separation filter, so that filter is in resonance frequency
Keep fractional bandwidth constant in the case where changing.By adjusting the resonance frequency in filter, filter is answered
Under different scenes, this improves the applicabilities of filter.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those skilled in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the schematic perspective view of filter according to an embodiment of the invention.
Fig. 2 is the cross-sectional view of filter according to an embodiment of the invention.
Fig. 3 is the effect picture of filter according to an embodiment of the invention.
1, bottom plate；2, side plate；3, cover board；4, the second tube；5, the first tube；61, the second connection sheet；62, first
Connection sheet；63, resonator；7, supporting element；8, it pops one's head in.
Specific embodiment
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described reality
Applying example is only a part of the embodiment of the present invention, and not all embodiments.Based on the embodiments of the present invention, those skilled in the art
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 is the schematic perspective view of filter according to an embodiment of the invention.Fig. 2 is according to the present invention one
The cross-sectional view of the filter of a embodiment.
It can be seen from the figure that the filter can have shell, the first tube 5, resonator 63 and the second tubulose
Object 4, the shell are hollow structure, and the shell includes bottom plate 1, side plate 2 and cover board 3, and the side plate 2 is fixed on bottom plate 1,
The cover board 3 is fixed on side plate 2, wherein offers first through hole on the cover board 3；First tube 5 is fixed on bottom
On plate 1；The resonator 63 is located on the first tube 5；One end of second tube 4 seals, second tube 4
Across first through hole and it is located at one end of sealing on bottom plate 1.
In the present embodiment, by changing the liquid volume in the first tube 5, so that the dielectric in the first tube 5
Constant changes, therefore, so that the effective wavelength in filter changes, so as to adjust the resonance frequency in filter；
By changing the liquid volume in the second tube 4, so that the dielectric constant in the second tube 4 changes, therefore, so that
Stiffness of coupling in filter changes, thus the resonance frequency in separation filter, so that filter is sent out in resonance frequency
Keep fractional bandwidth constant in the case where raw change.By adjusting the resonance frequency in filter, filter is applied
Under different scenes, this improves the applicabilities of filter.
In the present embodiment, shell is metal material, for example, copper, iron, aluminium or alloy etc..
In the present embodiment, first through hole and the second through-hole are offered on bottom plate 1, and first through hole and the second through-hole
Quantity is two.Wherein, a first through hole and the second through-hole are located at the side of bottom plate 1, another first through hole and second
Through-hole is located at the other side of bottom plate 1.
In one embodiment, filter can have the first connection sheet 62 and the second connection sheet 61, the first connection sheet 62
The two sides of resonator 63 are separately fixed at the second connection sheet 61.In the present embodiment, the first connection sheet 62 and the second connection sheet
61 modes that welding is respectively adopted are fixed on the two sides of resonator 63.It will be seen that in an alternate embodiment of the invention, the first connection sheet
62 and second connection sheet 61 can also be fixed on the two sides of resonator 63 using other modes, for example, being spirally connected, being clamped, being bonded
Deng.
In the present embodiment, the first connection sheet 62 and the second connection sheet 61 are metal material, for example, copper, iron, aluminium or conjunction
Gold etc..
In one embodiment, filter can have supporting element 7, and supporting element 7 is fixedly connected with the first connection sheet 62.?
In the present embodiment, the first connection sheet 62 is fixed on supporting element 7 by the way of welding.It will be seen that in optional embodiment
In, the first connection sheet 62 can also be fixed on supporting element 7 using other modes, for example, being spirally connected, being clamped, being bonded.
In the present embodiment, supporting element 7 offers threaded hole, and supporting element 7 is passed through first through hole from the inside of bottom plate 1,
And in the outside of bottom plate 1 by inserting screws into threaded hole, so that supporting element 7 is fixed on bottom plate 1.
In one embodiment, filter can have probe 8, probe 8 from the outside of bottom plate 1 pass through the second through-hole and
One end is fixedly connected with the second connection sheet 61.In the present embodiment, pop one's head in 8 side and the second connection sheet 61 using welding side
Formula is fixedly connected.It will be seen that in an alternate embodiment of the invention, 8 one end of popping one's head in can also be connected using other modes and second
Contact pin 61 is fixedly connected, for example, being spirally connected, being clamped, being bonded.The other end of probe 8 is connected with oscillograph, passes through 8 acquisition of probe
Resonant frequency signal in filter, and shown by oscillograph, to achieve the purpose that accurately to adjust.
In an alternate embodiment of the invention, probe 8 can also be connected by the way of external with the second connection sheet 61.
In the present embodiment, probe 8 is differential probe 8.Differential probe 8 is with measurement accuracy is high, easy to use, performance is high
The advantages that.
In the present embodiment, the first tube 5 is of an L-shaped structure, and the first tube 5 is arranged on bottom plate 1 and is located at humorous
The underface of vibration device 63, the both ends of the first tube 5 protrude from the edge of bottom plate 1 respectively, and side plate 2 is equipped with the first tubulose of adaptation
Side plate 2 is fixed on bottom plate 1 by two notches of object 5 by screw, meanwhile, the first tube of notch clamping 5 on side plate 2
Both ends, thus by the fixed bottom plate 1 of the first tube 5.
In one embodiment, the linear structure of the second tube 4, one end sealing of the second tube 4.In the present embodiment
In, the second tube 4 is sealed by hot melt adhesive.It will be seen that in an alternate embodiment of the invention, the second tube 4 can also pass through
Sealing-plug or sealing plate sealing.
In the present embodiment, through-hole is offered on the center of cover board 3, cover board 3 is fixed on by side plate 2 by screw
On, the second tube 4 passes through through-hole and is located at one end of sealing on bottom plate 1.
In the present embodiment, the first tube 5 and second tube 4 are made of plastic material.
In the present embodiment, the first tube 5, resonator 63, the 8, first connection sheet 62 of probe, the second connection sheet 61, branch
The quantity of support member 7 is two, wherein first tube 5, resonator 63, probe the 8, first connection sheet 62, second connection
Piece 61, supporting element 7 divide the side for being located at bottom plate 1 for first group, another first tube 5, resonator 63, probe 8, first connect
Contact pin 62, the second connection sheet 61, supporting element 7 divide the other side for being located at bottom plate 1 for second group, and two probes 8 and supporting element 7 are distinguished
Corresponding two first through hole and the second through-hole.
Assembling process:
First connection sheet 62 and the second connection sheet 61 are first respectively welded to the two sides of resonator 63, then by supporting element 7
Weld together with first connecting portion, then supporting element 7 is passed through into first through hole and is fixed by screw.Then by first
Tube 5 is placed on the lower section of resonator 63, and probe 8 is then passed through the second through-hole and is welded on one with the second connection sheet 61
It rises.Side plate 2 is fixed on bottom plate 1 by screw, while the first tube 5 is fixed on by bottom plate 1 by notch on side plate 2
On, cover board 3 is fixed on side plate 2 by screw.Finally, the second tube 4 is passed through through-hole and makes one end position of sealing
In on bottom plate 1.
Working principle:
8 other end of first popping one's head in is connected with oscillograph, and resonator 63 is made to generate resonance frequency, toward the first tube 5
Side water filling, makes the dielectric constant in the first tube 5 become larger, therefore, so that the effective wavelength in filter is elongated, to make
Resonance frequency in filter becomes smaller.By extracting the water in the second tube 4 out, increase the stiffness of coupling of the second tube 4
By force, to separate different resonance frequencies, so that filter keeps fractional bandwidth not in the case where resonance frequency changes
Become.By changing the water size in the first tube 5 and the second tube 4, to greatly improve the frequency shifts of filter
Range, effect are as shown in Figure 3.
The above are to a kind of description of filter provided by the present invention, for those skilled in the art, according to this hair
The thought of bright embodiment, there will be changes on specific embodiment and application range, and to sum up, the content of the present specification should not manage
Solution is limitation of the present invention.
Claims (10)
1. a kind of filter characterized by comprising
Shell, the shell are hollow structure, and the shell includes bottom plate, side plate and cover board, and the side plate is fixed on bottom plate,
The cover board is fixed on side plate, wherein offers through-hole on the cover board；
First tube, first tube are fixed on bottom plate；
Resonator, the resonator are located on the first tube；
Second tube, one end sealing of second tube, second tube pass through through-hole and make the one of sealing
End is located on bottom plate.
2. filter according to claim 1, which is characterized in that the filter further includes probe, is opened on the bottom plate
Equipped with first through hole, the probe is connected across first through hole resonator.
3. filter according to claim 2, which is characterized in that the probe is differential probe.
4. filter according to claim 2, which is characterized in that the filter further includes the first connection sheet, and described
A connecting piece resonator is fixedly connected, and the probe is fixedly connected with the first connection sheet.
5. filter according to claim 1, which is characterized in that the filter further includes the second connection sheet and support
Part, the second connection sheet resonator are fixedly connected, and second connection sheet is fixed on bottom plate by supporting element.
6. filter according to claim 1, which is characterized in that first tube is of an L-shaped structure, on the side plate
The notch for being adapted to first tube is offered, by the both ends of the first tube of notch clamping on side plate, thus by
One tube is fixed on bottom plate.
7. filter according to claim 1, which is characterized in that the quantity of first tube and the resonator is equal
It is two, wherein first tube and the resonator are located at the side of bottom plate, another described first tube
It is located at the other side of bottom plate with the resonator.
8. filter according to claim 1, which is characterized in that the shell is made of metal material.
9. filter according to claim 1, which is characterized in that first tube and second tube are by moulding
Material material is made.
10. filter according to claim 1, which is characterized in that one end of second tube is close by hot melt adhesive
Envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910566931.0A CN110247142B (en) | 2019-06-27 | 2019-06-27 | Filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910566931.0A CN110247142B (en) | 2019-06-27 | 2019-06-27 | Filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110247142A true CN110247142A (en) | 2019-09-17 |
| CN110247142B CN110247142B (en) | 2021-05-18 |
Family
ID=67889850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910566931.0A Active CN110247142B (en) | 2019-06-27 | 2019-06-27 | Filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110247142B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103367859A (en) * | 2012-03-31 | 2013-10-23 | 深圳光启创新技术有限公司 | Harmonic oscillator |
| WO2014024349A1 (en) * | 2012-08-09 | 2014-02-13 | 日本特殊陶業株式会社 | Tm010 mode dielectric resonator, resonator element, and dielectric filter |
| CN104170162A (en) * | 2013-11-18 | 2014-11-26 | 华为技术有限公司 | Resonator, filter, duplexer and multiplexer |
| EP2814109A1 (en) * | 2013-06-14 | 2014-12-17 | Alcatel Lucent | A radio frequency filter and a method of radio frequency filtering |
| US20150212228A1 (en) * | 2014-01-24 | 2015-07-30 | Schlumberger Technology Corporation | Method and Apparatus For Determining Permittivity of Rock Matrix |
| CN107706494A (en) * | 2017-09-29 | 2018-02-16 | 电子科技大学 | A kind of adjustable microwave resonator |
| CN107732401A (en) * | 2017-09-29 | 2018-02-23 | 电子科技大学 | A kind of Multi-beam klystron |
| CN208818655U (en) * | 2018-08-31 | 2019-05-03 | 天津大学 | A kind of broadband circle microwave resonant cavity sensor |
-
2019
- 2019-06-27 CN CN201910566931.0A patent/CN110247142B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103367859A (en) * | 2012-03-31 | 2013-10-23 | 深圳光启创新技术有限公司 | Harmonic oscillator |
| WO2014024349A1 (en) * | 2012-08-09 | 2014-02-13 | 日本特殊陶業株式会社 | Tm010 mode dielectric resonator, resonator element, and dielectric filter |
| EP2814109A1 (en) * | 2013-06-14 | 2014-12-17 | Alcatel Lucent | A radio frequency filter and a method of radio frequency filtering |
| CN104170162A (en) * | 2013-11-18 | 2014-11-26 | 华为技术有限公司 | Resonator, filter, duplexer and multiplexer |
| US20150212228A1 (en) * | 2014-01-24 | 2015-07-30 | Schlumberger Technology Corporation | Method and Apparatus For Determining Permittivity of Rock Matrix |
| CN107706494A (en) * | 2017-09-29 | 2018-02-16 | 电子科技大学 | A kind of adjustable microwave resonator |
| CN107732401A (en) * | 2017-09-29 | 2018-02-23 | 电子科技大学 | A kind of Multi-beam klystron |
| CN208818655U (en) * | 2018-08-31 | 2019-05-03 | 天津大学 | A kind of broadband circle microwave resonant cavity sensor |
Non-Patent Citations (1)
| Title |
|---|
| 夏洪伟: "基于超介质的微流体传感器", 《中国优秀硕士学位论文全文数据库》 * |
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| CN110247142B (en) | 2021-05-18 |
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