CN108616262A - A kind of filter frequencies tuning structure - Google Patents
A kind of filter frequencies tuning structure Download PDFInfo
- Publication number
- CN108616262A CN108616262A CN201810592484.1A CN201810592484A CN108616262A CN 108616262 A CN108616262 A CN 108616262A CN 201810592484 A CN201810592484 A CN 201810592484A CN 108616262 A CN108616262 A CN 108616262A
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- China
- Prior art keywords
- cavity
- tuning
- piece
- filter
- cover board
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0021—Constructional details
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Abstract
The present invention is suitable for wave filter technology field.A kind of filter frequencies tuning structure is provided, including：Cavity；Lid is located at the top of cavity and seals the cover board to form resonant cavity with cavity；Resonant column in cavity；The resonance piece for being supported in resonant column and being arranged with cover board relative spacing, resonance piece includes the tuning piece for being supported in the main part of resonant column and being extended by main part one end, tuning piece can generate deformation and change tuning piece and cover board spacing, and cavity offers and its internal through-hole being connected to and deformation is generated for stirring tuning piece.Filter frequencies tuning structure provided by the invention realizes that frequency is adjusted by stirring the tuning piece on resonance piece, frequency debugging is simple and debug time is short, and resonance piece occupancy inside cavity space is small, increase effectively the power capacity and Q values of filter, high power capacity and high q-factor can be realized in the cavity of smaller size smaller, it realizes that cavity utilization rate maximizes, is conducive to the miniaturization of filter.
Description
Technical field
The invention belongs to wave filter technology field more particularly to a kind of filter frequencies tuning structures.
Background technology
Filter is widely used in the communications field as a kind of frequency selection device, and when in use, external signal is through filter
Connector on wave device is sent to filter internal, with filtering clutter or interference signal.
The prior art, filter generally include cavity, the tuning cover board to form resonant cavity is closed with cavity cover and are mounted on chamber
Internal resonant rod, wherein tuning cover board is provided with tuning screw and locking nut, being achieved in that for frequency passes through resonant rod
It is realized the capacitance between cover board is tuned, pass through the depth change resonant rod for adjusting tuning screw and tunes the electricity between cover board
Hold to adjust frequency, needs repeatedly to screw tuning screw by tool in adjustment process, frequency debugs cumbersome and debug time
It is long, and the top opposing cover plates protrusion of locking nut and tuning screw, locking nut and tuning screw can occupy larger space, make
The appearance and size of filter is larger, simultaneously because tuning screw stretches into cavity, tuning screw occupancy inside cavity space is big, meeting
Reduce the power capacity and Q values of filter.
Invention content
The present invention provides a kind of filter frequencies tuning structure, it is intended to which the frequency debugging for solving prior art filter is cumbersome
And debug time is long, and locking nut and tuning screw can occupy larger space, keep the appearance and size of filter big, simultaneously because
Tuning screw stretches into cavity, and tuning screw occupancy inside cavity space is big, can reduce the power capacity of filter and asking for Q values
Topic.
The invention is realized in this way a kind of filter frequencies tuning structure, including：
Cavity；
Lid is located at the top of the cavity and seals the cover board to form resonant cavity with the cavity；
Resonant column in the cavity；
The resonance piece for being supported in the resonant column and being arranged with the cover board relative spacing, the resonance piece include being supported in
The main part of the resonant column and the tuning piece extended by described main part one end, the tuning piece can generate deformation and change
Become the tuning piece and the cover board spacing, the cavity, which is offered, to be connected to its inside and generated for stirring the tuning piece
The through-hole of deformation.
Preferably, the tuning piece includes the deformations being connect with the main part and is extended by described deformations one end
Extension, the opposite sides of the deformations is recessed two grooves of the interval extension and the main part.
Preferably, the cross section of the cavity and the main part are square.
Preferably, the extension is square, and the length of the extension is less than the length of the main part.
Preferably, the main part is arranged in parallel with the cover board, and the resonant column is set perpendicular to the cavity bottom surface
It sets.
Preferably, the filter frequencies tuning structure further includes mounting screw, and the main part offers mounting hole, institute
Mounting screw is stated across the mounting hole and the resonance piece is fixed at the top of the resonant column.
Preferably, the filter frequencies tuning structure further includes fixing screws, and the resonance column bottom passes through described solid
Determine screw to be fixed in the cavity.
Preferably, the resonant column is integrally formed with the cavity.
Preferably, the cover board is fixed on by multiple trip bolts at the top of the cavity.
Filter frequencies tuning structure provided by the invention includes that cavity, lid are located at the top of cavity and seal to be formed with cavity
The cover board of resonant cavity, the resonant column in cavity and the resonance piece for being supported in resonant column and being arranged with cover board relative spacing,
By stirring the tuning piece on resonance piece, tuning piece can generate deformation to change tuning piece and cover board spacing, to realize frequency
It adjusts, compared with the prior art by screwing tuning screw into line frequency regulative mode, filter frequencies of the invention tuning knot
Structure can fast implement frequency adjusting, frequency debugging is simple and debug time is short without repeatedly screwing tuning screw.Simultaneously as
It is not necessary that tuning screw and locking nut is arranged, the appearance and size of filter can be reduced, be conducive to the miniaturization of filter, and resonance
Piece occupies that inside cavity space is small, it can be achieved that cavity utilization rate maximizes, and increases effectively the power capacity and Q values of filter,
So as to realize high power capacity and high q-factor in the cavity of smaller size smaller.
Description of the drawings
Fig. 1 is the three-dimensional structure diagram of filter frequencies tuning structure of the present invention；
Fig. 2 is the stereochemical structure exploded view of filter frequencies tuning structure of the present invention；
Fig. 3 is that filter frequencies tuning structure of the present invention removes the three-dimensional structure diagram after cover board；
Fig. 4 is the cross-sectional view of filter frequencies tuning structure of the present invention；
Fig. 5 is the three-dimensional structure diagram of resonance piece in filter frequencies tuning structure of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Filter frequencies tuning structure provided by the invention includes that cavity, lid are located at the top of cavity and seal to be formed with cavity
The cover board of resonant cavity, the resonant column in cavity and the resonance piece for being supported in resonant column and being arranged with cover board relative spacing,
By stirring the tuning piece on resonance piece, tuning piece can generate deformation to change tuning piece and cover board spacing, to realize frequency
It adjusts, compared with the prior art by screwing tuning screw into line frequency regulative mode, filter frequencies of the invention tuning knot
Structure can fast implement frequency adjusting, frequency debugging is simple and debug time is short without repeatedly screwing tuning screw.Simultaneously as
It is not necessary that tuning screw and locking nut is arranged, the appearance and size of filter can be reduced, be conducive to the miniaturization of filter, and resonance
Piece occupies that inside cavity space is small, it can be achieved that cavity utilization rate maximizes, and increases effectively the power capacity and Q values of filter,
So as to realize high power capacity and high q-factor in the cavity of smaller size smaller.
Please refer to Fig. 1-Fig. 4, wherein Fig. 1 is the three-dimensional structure diagram of filter frequencies tuning structure of the present invention；Fig. 2 is this
The stereochemical structure exploded view of invention filter frequencies tuning structure；Fig. 3 is that filter frequencies tuning structure of the present invention removes cover board
Three-dimensional structure diagram afterwards；Fig. 4 is the cross-sectional view of filter frequencies tuning structure of the present invention.The filter frequencies tune
Structure includes：Cavity 1；Lid is located at 1 top of cavity and seals the cover board 2 for forming resonant cavity with cavity 1；It is humorous in cavity 1
Shake column 3；The resonance piece 4 for being supported in resonant column 3 and being arranged with 2 relative spacing of cover board, resonance piece 4 include being supported in resonant column 3
Main part 41 and the tuning piece 42 extended by 41 one end of main part, tuning piece 42 can generate deformation and change tuning piece 42 with
2 spacing of cover board, cavity 1 offer and its internal through-hole 11 being connected to and deformation is generated for stirring the tuning piece 42.
In the embodiment of the present invention, resonance piece 4 is in lamellar, and main part 41 is supported on 3 top of resonant column, and main part 41 plays
The effect of support tuning piece 42, when stirring tuning piece 42, tuning piece 42 can be deformed upon with respect to main part 41.Adjusting frequency
When, finger is stretched into through-hole 11 and is stirred directly by tuning piece 4 to 2 direction of cover board or far from 2 direction of cover board, tuning piece is made
4 opposite main parts 41 are folded upward at or bend downward and maintain the state after bending, to change between resonance piece 4 and cover board 2
Capacitance, to realize frequency adjust.By stirring the tuning piece 42 on resonance piece 4, tuning piece 42 generates deformation to adjust
It is adjusted compared with the prior art into line frequency by screwing tuning screw with 2 spacing of cover board to realize that frequency is adjusted for humorous 4
Mode can fast implement frequency adjusting, the frequency of filter frequencies tuning structure of the invention without repeatedly screwing tuning screw
Regulative mode is simple and debug time is short.It is of course also possible to exert a force to tuning piece 4 by other tools, so as to tune piece 4 to lid
Plate 2 is debugged simple and quick far from 2 direction bending of cover board with realizing that frequency is adjusted.Meanwhile compared with the prior art, by
In it is not necessary that tuning screw and locking nut is arranged, the appearance and size of filter is reduced, and resonance piece 4 occupies inside cavity space
It is small, it can be achieved that cavity space maximize, increase effectively the power capacity and Q values of filter, and before realizing identical frequency
It puts, the appearance and size smaller of filter of the invention is conducive to the miniaturization of filter.
As an embodiment of the present invention, the cross section of the cavity 1 and the main part 41 are square, i.e., described
41 shape of main part and the cross-sectional shape of the cavity 1 match, and take full advantage of the inner space of cavity 1, are conducive to resonance
Piece 4 maximally utilizes the inner space of cavity 1, can increase the area of resonance piece 4, so as to be effectively increased resonance piece 4 and cover board 2
Facing area, under the premise of realizing identical frequency, the spacing of the cover board 2 and resonance piece 4 be more than prior art cover plate 2 with
The distance of resonant rod further increases the power capacity of filter, can be in smaller chamber under the premise of realizing identical frequency
Body realizes high power capacity.And by the way that squarely is arranged in the main part 41, it is convenient for the processing of resonance piece 4.
Fig. 5 is please referred to, Fig. 5 is the three-dimensional structure diagram of resonance piece in filter frequencies tuning structure of the present invention.As this hair
Bright one embodiment, tuning piece 42 include the deformations 421 being connect with main part 41 and are extended by 421 one end of deformations
Extension 422, the opposite sides of deformations 421 are recessed two grooves 43 of interval extension 422 and main part 421.Pass through
Groove 43 is set, material amounts can be reduced, and reduce 421 length of deformations, generates deformation convenient for deformations 421, makes extension
It is easy that portion 422 is stirred.When adjusting tuning piece 42,422 relative deformation portion 421 of extension is upwardly or downwardly exerted a force and is stirred,
Deformations 421 can occur bending and deformation, and make extension 422 with respect to main part 41 to close to 2 direction of cover board or to far from 2 side of cover board
To bending, to change the spacing between extension 422 and cover board 2, to achieve the purpose that adjust frequency.
As an embodiment of the present invention, the extension 422 is square, and the length of the extension 422 is less than
The length of the main part 41 is convenient for by the way that the length of the extension 422 to be set smaller than to the length of the main part 41
Stir extension 422.
As an embodiment of the present invention, main part 41 is arranged in parallel with cover board 2, and resonant column 3 is perpendicular to 1 bottom of cavity
Face is arranged.
As an embodiment of the present invention, filter frequencies tuning structure further includes mounting screw 5, and main part 41 opens up
There are mounting hole 411, mounting screw 5 to pass through mounting hole 411 and resonance piece 4 is fixed on 3 top of resonant column, resonance piece 4 installs letter
It is single.
As an embodiment of the present invention, filter frequencies tuning structure further includes fixing screws 6,3 bottom of resonant column
It is fixed in cavity 1 by fixing screws 6, is convenient for the installation of resonant column 3.
As an alternative embodiment of the invention, resonant column 3 is integrally formed with cavity 1, reduces the assembler of resonant column 3
Sequence, to improve the processing efficiency of filter.
As an embodiment of the present invention, cover board 2 is fixed on 1 top of cavity by multiple trip bolts 7.
As an embodiment of the present invention, resonance piece 4 is made of aluminium, using the good deformation nature of aluminium, and
Stable form can be kept after deformation, ensure that the coupling structure of filter adjusts the reliability of frequency.
Filter frequencies tuning structure provided by the invention includes that cavity, lid are located at the top of cavity and seal to be formed with cavity
The cover board of resonant cavity, the resonant column in cavity and the resonance piece for being supported in resonant column and being arranged with cover board relative spacing,
By stirring the tuning piece on resonance piece, tuning piece can generate deformation to change tuning piece and cover board spacing, to realize frequency
It adjusts, compared with the prior art by screwing tuning screw into line frequency regulative mode, filter frequencies of the invention tuning knot
Structure can fast implement frequency adjusting, frequency debugging is simple and debug time is short without repeatedly screwing tuning screw.Simultaneously as
It is not necessary that tuning screw and locking nut is arranged, the appearance and size of filter can be reduced, be conducive to the miniaturization of filter, and resonance
Piece occupies that inside cavity space is small, it can be achieved that cavity utilization rate maximizes, and increases effectively the power capacity and Q values of filter,
So as to realize high power capacity and high q-factor in the cavity of smaller size smaller.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made by within principle etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of filter frequencies tuning structure, which is characterized in that including：
Cavity；
Lid is located at the top of the cavity and seals the cover board to form resonant cavity with the cavity；
Resonant column in the cavity；
The resonance piece for being supported in the resonant column and being arranged with the cover board relative spacing, the resonance piece are described including being supported in
The main part of resonant column and the tuning piece extended by described main part one end, the tuning piece can generate deformation and change institute
Tuning piece and the cover board spacing are stated, the cavity, which is offered, to be connected to its inside and generate deformation for stirring the tuning piece
Through-hole.
2. filter frequencies tuning structure according to claim 1, which is characterized in that the tuning piece includes and the master
The deformations of body portion connection and the extension extended by described deformations one end, the opposite sides of the deformations are recessed
It is spaced two grooves of the extension and the main part.
3. filter frequencies tuning structure according to claim 2, which is characterized in that the cross section of the cavity and described
Main part is square.
4. filter frequencies tuning structure according to claim 3, which is characterized in that the extension is square, and institute
The length for stating extension is less than the length of the main part.
5. filter frequencies tuning structure according to claim 1, which is characterized in that the main part is flat with the cover board
Row setting, and the resonant column is arranged perpendicular to the cavity bottom surface.
6. filter frequencies tuning structure according to claim 1, which is characterized in that the filter frequencies tuning structure
Further include mounting screw, the main part offers mounting hole, and the mounting screw passes through the mounting hole and by the resonance
Piece is fixed at the top of the resonant column.
7. filter frequencies tuning structure according to claim 1, which is characterized in that the filter frequencies tuning structure
Further include fixing screws, the resonance column bottom is fixed on by the fixing screws in the cavity.
8. filter frequencies tuning structure according to claim 1, which is characterized in that the resonant column and the cavity one
It is body formed.
9. filter frequencies tuning structure according to claim 1, which is characterized in that the cover board passes through multiple fastening spiral shells
Nail is fixed at the top of the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810592484.1A CN108616262A (en) | 2018-06-11 | 2018-06-11 | A kind of filter frequencies tuning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810592484.1A CN108616262A (en) | 2018-06-11 | 2018-06-11 | A kind of filter frequencies tuning structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108616262A true CN108616262A (en) | 2018-10-02 |
Family
ID=63664890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810592484.1A Pending CN108616262A (en) | 2018-06-11 | 2018-06-11 | A kind of filter frequencies tuning structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108616262A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518317A (en) * | 2019-09-23 | 2019-11-29 | 石家庄滤通微波科技有限公司 | A kind of implementation method of no screw small cavity filter |
| CN111146540A (en) * | 2020-01-15 | 2020-05-12 | 成都川美新技术股份有限公司 | Filter cavity structure for frequency synthesis module |
| CN111326842A (en) * | 2018-12-14 | 2020-06-23 | 中兴通讯股份有限公司 | Resonator and filter |
| CN114927843A (en) * | 2022-05-16 | 2022-08-19 | 京信射频技术(广州)有限公司 | Filter and communication device |
| CN115663434A (en) * | 2022-12-29 | 2023-01-31 | 成都联帮微波通信工程有限公司 | Structure of filter |
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| US9123983B1 (en) * | 2012-07-20 | 2015-09-01 | Hittite Microwave Corporation | Tunable bandpass filter integrated circuit |
| CN208143189U (en) * | 2018-06-11 | 2018-11-23 | 宁波华瓷通信技术有限公司 | A kind of filter frequencies tuning structure |
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| CN101820091A (en) * | 2010-04-29 | 2010-09-01 | 网拓(上海)通信技术有限公司 | Adjustable cavity filter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111326842A (en) * | 2018-12-14 | 2020-06-23 | 中兴通讯股份有限公司 | Resonator and filter |
| CN110518317A (en) * | 2019-09-23 | 2019-11-29 | 石家庄滤通微波科技有限公司 | A kind of implementation method of no screw small cavity filter |
| CN111146540A (en) * | 2020-01-15 | 2020-05-12 | 成都川美新技术股份有限公司 | Filter cavity structure for frequency synthesis module |
| CN114927843A (en) * | 2022-05-16 | 2022-08-19 | 京信射频技术(广州)有限公司 | Filter and communication device |
| CN114927843B (en) * | 2022-05-16 | 2023-11-24 | 京信射频技术(广州)有限公司 | Filter and communication device |
| CN115663434A (en) * | 2022-12-29 | 2023-01-31 | 成都联帮微波通信工程有限公司 | Structure of filter |
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Address after: 315000 floor 1-2, building 8, 818 Jinyuan Road, Yinzhou District, Ningbo City, Zhejiang Province Applicant after: Ningbo Huaci Communication Technology Co.,Ltd. Address before: 2 / F, building 3, 818 Jinyuan Road, Yinzhou investment and entrepreneurship center, Ningbo, Zhejiang 315000 Applicant before: NINGBO HUACI COMMUNICATION TECHNOLOGY Co.,Ltd. |