CN209544573U - Filter tuner structure and filter - Google Patents
Filter tuner structure and filter Download PDFInfo
- Publication number
- CN209544573U CN209544573U CN201920346729.2U CN201920346729U CN209544573U CN 209544573 U CN209544573 U CN 209544573U CN 201920346729 U CN201920346729 U CN 201920346729U CN 209544573 U CN209544573 U CN 209544573U
- Authority
- CN
- China
- Prior art keywords
- coupling
- resonant cavity
- filter
- cavity
- tuning screw
- Prior art date
- 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.)
- Active
Links
Abstract
The utility model is suitable for wave filter technology field, provide a kind of filter tuner structure and filter, the filter tuner structure includes separating the cavity for having multiple resonant cavities, lid is located at the cover board of cavity upper end, respectively correspond the multiple resonators being arranged in each resonant cavity, respectively correspond multiple first tuning screws of each resonator, and it is connected to the coupling reinforcement between two resonators of coupling to be reinforced, the position of each resonant cavity intersection is respectively formed coupling window, isolation bar is equipped between two resonant cavities for reducing coupling, the second tuning screw is respectively equipped on each coupling window in addition to being located at isolation bar, each first tuning screw and the second tuning screw are each passed through the fixation hole being correspondingly arranged on cover board and are fixed by nut.Filter tuner structure provided by the utility model solves the problems, such as that existing filter coupling window energy coupling degree is insufficient.
Description
Technical field
The utility model belongs to wave filter technology field more particularly to a kind of filter tuner structure and filter.
Background technique
With the progress of science and technology and the development of electronic technology, more and more electronic equipments need to use filter,
Filter is widely used in the communications field as a kind of frequency selection device, and when in use, external signal is through on filter
Connector is sent to filter internal, with filtering clutter or interference signal.
Currently, the Coupling Design of filtering window is usually to use between the chamber of filter and chamber in filter industry
By window direct-coupling, or coupled by coupling block or coupling piece etc., when debugging filter, by change the size of window come
Control the power of coupling.
Since to have width to have narrow for filter product passband demand, when filter product passband demand is wider, needed for coupling
It is also larger to close window width, however it is existing to meet the needs of miniaturization, and the size of filter cavity is smaller and smaller, so that coupling
Close window width size it is limited, simultaneously because design objective require, filter sometimes be reduce cavity in target reso nance chamber it
Between coupling, also between target reso nance chamber be equipped with isolation bar, due to isolation bar setting cause couple window between spacing
It reduces, leads to existing coupling window energy coupling degree wretched insufficiency, and be unable to satisfy to enhance between the resonator of coupling
Coupling, cannot achieve the indices of filter electric property, to influence the development of filter.
Utility model content
The utility model embodiment provides a kind of filter tuner structure, it is intended to solve existing filter coupling window energy
The problem of degree of coupling deficiency.
The utility model embodiment proposes a kind of filter tuner structure, including separating the cavity for having multiple resonant cavities, lid
It is located at the cover board of the cavity upper end, respectively corresponds the multiple resonators being arranged in each resonant cavity, respectively correspond each
Multiple first tuning screws of a resonator and the coupling being connected between two resonators of coupling to be reinforced
The position of reinforcement, each resonant cavity intersection is respectively formed coupling window, for reducing two resonant cavities of coupling
Between be equipped with isolation bar, except be located at the isolation bar in addition to each coupling window on be respectively equipped with the second tuning screw,
Each first tuning screw and second tuning screw are each passed through the fixation hole being correspondingly arranged on the cover board and lead to
Nut is crossed to be fixed.
Further, the coupling reinforcement is coupling enhancing muscle, the coupling enhancing muscle and its described second tuning
The thickness in the corresponding evacuation region of screw rod is greater than the thickness of other positions, the second tuning screw described in the evacuation region face
Position is equipped with escape groove.
Further, the coupling reinforcement is coupling enhancing connection sheet, two resonators of coupling to be reinforced
The corresponding one end of institute is respectively equipped with fixed column, and the fixed column and coupling enhancing connection sheet are fixed by fastener
Connection.
Further, the width of coupling enhancing connection sheet evacuation position corresponding with the second tuning screw described in its
Greater than the width of other positions, the position of the second tuning screw described in the evacuation position face is equipped with avoid holes.
Further, the cavity is made of three resonant cavities, respectively includes the first resonant cavity, the second resonance
Chamber and third resonant cavity are equipped with the isolation bar, second resonance between first resonant cavity and the third resonant cavity
It is respectively equipped with second tuning screw on the coupling window of chamber and other resonant cavity intersection locations, two of coupling to be reinforced
The resonator is respectively the resonator being set in first resonant cavity and second resonant cavity.
Further, the shape of each resonant cavity is rectangular or round.
Further, each second tuning screw is set to the middle position of corresponding coupling window.
Further, the periphery of the cavity is intervally distributed with multiple mounting posts.
The utility model embodiment also proposes that a kind of filter, the filter include filter tuner knot described above
Structure.
Filter tuner structure provided by the utility model, by the way that multiple resonant cavities are arranged in cavity, each humorous
Shake it is intracavitary be respectively set resonator, and the position of corresponding each resonator is equipped with the first tuning screw, so that passing through the first tuning
The length that screw rod stretches in resonator can be adjusted the tuned frequency of filter, wherein since design needs in filter
Isolation bar is equipped in resonant cavity, so that the coupling window between resonant cavity is smaller, and at this time by coupling to be reinforced
Coupling reinforcement is connected between resonator, so that the sensibility reciprocal between resonator can be enhanced, to enhance coupling between resonant cavity
The energy coupling degree for closing window solves the problems, such as that existing filter coupling window energy coupling degree is insufficient.Simultaneously by coupling
The second tuning screw being arranged on window is closed, allows to adjust the bandwidth of filter passband.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the filter tuner structure that the first embodiment of the utility model provides；
Fig. 2 is the configuration schematic diagram for the filter tuner structure that the first embodiment of the utility model provides；
Fig. 3 is the detonation configuration signal at another visual angle of filter tuner structure that the first embodiment of the utility model provides
Figure；
Fig. 4 is the configuration schematic diagram for the filter tuner structure that the second embodiment of the utility model provides；
Fig. 5 is the detonation configuration signal at another visual angle of filter tuner structure that the second embodiment of the utility model provides
Figure；
Fig. 6 is the enlarged drawing of V part of Fig. 4 centre circle.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Filter tuner structure provided by the utility model includes separating to have the cavity of multiple resonant cavities, cover board, right respectively
Multiple resonators in each resonant cavity should be set, multiple first tuning screws, the Yi Jilian of each resonator are respectively corresponded
The position of the coupling reinforcement being connected between two resonators of coupling to be reinforced, each resonant cavity intersection is respectively formed coupling window
Mouthful, it is equipped with isolation bar between two resonant cavities for reducing coupling, is divided equally on each coupling window in addition to being located at isolation bar
It She You not the second tuning screw.By being connected with coupling reinforcement between the resonator of coupling to be reinforced, so that can enhance humorous
Sensibility reciprocal between vibration device, to enhance the energy coupling degree for coupling window between resonant cavity.
Embodiment one
The structural schematic diagram of the filter tuner structure provided as shown in Figs. 1-3 for the utility model first embodiment.
Please referring to Fig. 1 to Fig. 3, filter tuner structure provided by the utility model, including separation has multiple resonant cavities 21
Cavity 20, lid be located at 20 upper end of cavity cover board 30, respectively correspond the multiple resonators 40 being arranged in each resonant cavity 21,
Respectively correspond multiple first tuning screws 50 of each resonator 40 and be connected to coupling to be reinforced two resonators 40 it
Between coupling reinforcement 60.
Wherein, the quantity of resonant cavity 21 can be configured according to actual use demand, it is preferred that in the present embodiment, such as Fig. 2
With shown in Fig. 3, which is made of three resonant cavities 21, it is possible to understand that, in the other embodiments of the utility model, chamber
Body 20 can also have the resonant cavity 21 of other quantity, be set according to practical specific design objective, it is not limited here, no
Constitute limitations of the present invention.Further, the shape of resonant cavity 21 can be set as according to actual needs it is rectangular, round or
Other shapes.Preferably, in the present embodiment, each resonant cavity 21 is using position difference shape round, that each resonant cavity 21 intersects
At coupling window 22, each resonator 40 is coupled by coupling window 22 respectively, and the cavity 20 is substantially in three flap shapes.It can
With understanding, the shape of resonant cavity 21 and cavity 20 may also be configured to other, be set according to specific design objective,
This does not constitute limitations of the present invention without limitation.
Further, as shown in figure 3, in the present embodiment, cavity 20 from the bottom to top, is successively arranged first from left to right
Resonant cavity 211, the second resonant cavity 212 and third resonant cavity 213, wherein between the first resonant cavity 211 and third resonant cavity 213
Equipped with isolation bar 23, it is respectively equipped with the second tuning screw 70 on each coupling window 22 in addition to being located at isolation bar 23, specifically
To be respectively equipped with the second tuning screw on its second resonant cavity 212 and the coupling window 22 of other 21 intersection locations of resonant cavity
70, and each second tuning screw 70 is set to the middle position of corresponding coupling window 22.It should be understood that the second tuning spiral shell
The position of bar 70 can have offset between coupling window 22, set according to specific design objective, do not limited herein
It is fixed, do not constitute limitations of the present invention.Wherein, it should be pointed out that its each first tuning screw 50 passes through adjusting
Deeply to the length in corresponding resonator 40, it is adjusted for the tuned frequency to filter.Its each second tune
Humorous screw rod 70 is adjusted by adjusting deeply to the length in cavity 20 for the bandwidth to filter passband.
Further, in the present embodiment, two resonators 40 of coupling to be reinforced are respectively to be set to the first resonant cavity
211 and the second resonator 40 in resonant cavity 212, therefore, such as Fig. 2, shown in Fig. 3, coupling reinforcement 60 is connected to the
Between resonator 40 in one resonant cavity 211 and the second resonant cavity 212.Wherein in the present embodiment, the coupling reinforcement 60 is specific
For a coupling enhancing muscle 61, the sensibility reciprocal between two resonators 40 is enhanced, so that it is humorous to enhance the first resonant cavity 211 and second
Coupling amount between vibration chamber 212.Wherein, the control to coupling amount can be achieved by the height control of coupling enhancing muscle 61, at this
In the other embodiments of utility model, according to actual electrical performance demands, the height of coupling enhancing muscle 61 can be according to tool
The design requirement of body is increased or is lowered, it is not limited here.
Further, the thickness in coupling enhancing muscle 61 evacuation region corresponding with its second tuning screw 70 is greater than other
The shape of the thickness of position, evacuation region can be set as rectangular, circle or other shapes according to actual needs.Preferably, originally
In embodiment, the shape in evacuation region is circle, and its position for avoiding the second tuning screw of region face 70 is equipped with and keeps away
Slot 611 is allowed, at this time when the excessive height of coupling enhancing muscle 61 causes the tuning on the second tuning screw 70 to influence, by coupling
The thickness for closing the evacuation region setting of enhancing muscle 61 is larger, and the setting of the escape groove 611 in evacuation region, so that both not
When influencing the height of coupling enhancing muscle 61, and the tuning range of the second tuning screw 70 is not influenced, to make to couple window 22
Coefficient of coup enhancing.
Further, distinguish on the position of corresponding each first tuning screw 50 of cover board 30 and the second tuning screw 70
Equipped with fixation hole 31, when installing, each first tuning screw 50 and the second tuning screw 70 are each passed through on cover board 30 and correspond to
Fixation hole 31 and be fixed by nut 80.
Further, the periphery of cavity 20 is intervally distributed with multiple mounting posts 24, when filter tuner structure needs to carry out
When installation is fixed, the corresponding through-hole opened up on installation part and mounting post 24 is sequentially passed through by fasteners such as screw, bolts, is made
Filter tuner structure can be carried out installation by, which obtaining, is fixed on installation part.
Wherein it should be pointed out that due to the needs and design objective of existing product design, in order to meet filtering
The electrical performance demands of device in the present embodiment, are used to reduce between the first resonant cavity 211 of coupling and third resonant cavity 213
Equipped with isolation bar 23, the coupling that isolation bar 23 is used to control between the first resonant cavity 211 and third resonant cavity 213 is strong and weak, because
This, wherein the control to its coupling amount can be achieved in the length control by isolation bar 23.It should be understood that in the utility model
In other embodiments, 23 length of isolation bar between resonant cavity 21 can be lengthened or shortened according to specific design requirement, herein
Without limitation.It, can be according to actual use demand simultaneously it should be understood that in the other embodiments of the utility model
Isolation bar 23 is equipped between other resonant cavities 21, or when the quantity of resonant cavity 21 is other, the quantity of isolation bar 23 is also
It can be other, be set according to specific design objective, do not constitute limitations of the present invention.
Therefore at this time due to the setting of isolation bar 23, so that the coupling window of the first resonant cavity 211 and the second resonant cavity 212
Spacing between 22 is smaller, so that the coupling of the first resonant cavity 211 and the resonator 40 in the second resonant cavity 212 reduces, simultaneously
In the present embodiment, due to the restriction in order to meet the electrical performance demands and design objective of filter, it is therefore desirable to enhance first
The coupling between resonator 40 in resonant cavity 211 and the second resonant cavity 212.Therefore, in the present embodiment, coupling to be reinforced
Two resonators 40 are respectively the resonator 40 being set in the first resonant cavity 211 and the second resonant cavity 212.It should be understood that
In the other embodiments of the utility model, two resonators 40 of coupling to be reinforced can also be other due to isolation bar 23
It is arranged so that couple the resonator 40 of 22 spacing reduction of window, is set according to specific design objective, is not constituted to this
The limitation of utility model.
Filter tuner structure provided by the embodiment of the utility model, by the way that multiple resonant cavities are arranged in cavity, each
Resonator is respectively set in a resonant cavity, and the position of corresponding each resonator is equipped with the first tuning screw, so that passing through first
The length that tuning screw stretches in resonator can be adjusted the tuned frequency of filter, wherein due to setting in filter
Meter needs to be equipped with isolation bar in resonant cavity, so that the coupling window between resonant cavity is smaller, and at this time by coupling to be reinforced
Coupling reinforcement is connected between the resonator of conjunction so that the sensibility reciprocal between resonator can be enhanced, thus enhance resonant cavity it
Between couple the energy coupling degree of window, solve the problems, such as that existing filter coupling window energy coupling degree is insufficient.Pass through simultaneously
The second tuning screw being arranged on coupling window, allows to adjust the bandwidth of filter passband.
Embodiment two
The structural schematic diagram of the filter tuner structure provided as shown in Figure 4-Figure 6 for the utility model second embodiment,
The technical effect and embodiment one of its realization principle and generation is identical, and to briefly describe, the utility model embodiment does not refer to it
Place, can refer to corresponding contents in embodiment one.
Its difference is, in one embodiment of the utility model, which is specially that a coupling enhancing connects
Contact pin 62, corresponding one end point of 40 institute of resonator in the resonator 40 and the second resonant cavity 212 in the first resonant cavity 211
Not She You fixed column 25, fixed column 25 and coupling enhancing connection sheet 62 be fixedly connected by fasteners such as screw, bolts,
Wherein, the control to coupling amount can be achieved by the height control of fixed column 25, when the fixed column 25 is excessively high, it is therefore desirable to right
The coupling enhances 62 awards of connection sheet evacuation.Wherein, the second tuning screw 70 is corresponding keeps away with it for coupling enhancing connection sheet 62
The width of position is allowed to be greater than the width of other positions, and its position for avoiding the second tuning screw of position face 70 is equipped with evacuation
Hole 621 may pass through the avoid holes 621, so that not influencing the second tune when second tuning screw 70 carries out the bandwidth adjustment of passband
The tuning range of humorous screw rod 70.It should be pointed out that the height of its fixed column 25 can be set according to specific design objective,
This is without limitation.
It should be pointed out that coupling shown in embodiment one can be used when the spacing between its coupling window 22 is larger
It closes enhancing muscle 61 and fabrication design is carried out to filter tuner structure.When spacing between its coupling window 22 is smaller, due to not
Just processing coupling enhancing muscle 61, therefore coupling enhancing connection sheet 62 shown in embodiment two can be used and processed, and lead to
It crosses the fasteners such as screw, bolt and installation is fixed to fixed column 25, to realize that carrying out production to filter tuner structure adds
Work.
The utility model embodiment also provides a kind of filter, which includes the filter tuner of above-described embodiment
Structure.
It should be noted that filter includes but is not limited to three resonant cavities, the first resonant cavity, the second resonant cavity and third
Resonant cavity can be a part of resonant cavity being provided only in filter, i.e., also have after third resonant cavity the 4th resonant cavity,
5th resonant cavity ... N resonant cavity.For purposes of illustration only, above embodiments are only illustrated by taking three resonant cavities as an example.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (9)
1. a kind of filter tuner structure, which is characterized in that including separating the cavity for having multiple resonant cavities, lid is located at the cavity
The cover board of upper end respectively corresponds the multiple resonators being arranged in each resonant cavity, respectively corresponds each resonator
Multiple first tuning screws and the coupling reinforcement that is connected between two resonators of coupling to be reinforced, it is each
The position of the resonant cavity intersection is respectively formed coupling window, is equipped with isolation between two resonant cavities for reducing coupling
Muscle is respectively equipped with the second tuning screw on each coupling window in addition to being located at the isolation bar, and each described first
Tuning screw and second tuning screw are each passed through the fixation hole being correspondingly arranged on the cover board and are consolidated by nut
It is fixed.
2. filter tuner structure as described in claim 1, which is characterized in that the coupling reinforcement is coupling enhancing muscle,
The thickness that the coupling enhances muscle evacuation region corresponding with the second tuning screw described in its is greater than the thickness of other positions, described
The position for avoiding the second tuning screw described in the face of region is equipped with escape groove.
3. filter tuner structure as described in claim 1, which is characterized in that the coupling reinforcement is coupling enhancing connection
Piece, the corresponding one end of the resonator institute of two of coupling to be reinforced are respectively equipped with fixed column, the fixed column and the coupling
Enhancing connection sheet is closed to be fixedly connected by fastener.
4. filter tuner structure as claimed in claim 3, which is characterized in that coupling enhancing connection sheet and its described the
The width of the corresponding evacuation position of two tuning screws is greater than the width of other positions, the second tuning described in the face of the evacuation position
The position of screw rod is equipped with avoid holes.
5. filter tuner structure as described in claim 1, which is characterized in that the cavity is by three resonant cavity groups
At respectively including the first resonant cavity, the second resonant cavity and third resonant cavity, first resonant cavity and the third resonant cavity
Between be equipped with the isolation bar, be respectively equipped with institute on the coupling window of second resonant cavity and other resonant cavity intersection locations
State the second tuning screw, two resonators of coupling to be reinforced are respectively to be set to first resonant cavity and described second humorous
Shake intracavitary resonator.
6. filter tuner structure as claimed in claim 5, which is characterized in that the shape of each resonant cavity be it is rectangular or
It is round.
7. filter tuner structure as claimed in claim 5, which is characterized in that each second tuning screw is set to institute
The middle position of corresponding coupling window.
8. filter tuner structure as described in claim 1, which is characterized in that the periphery of the cavity is intervally distributed with multiple
Mounting post.
9. a kind of filter, which is characterized in that the filter includes the described in any item filter tuner knots of claim 1-8
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920346729.2U CN209544573U (en) | 2019-03-19 | 2019-03-19 | Filter tuner structure and filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920346729.2U CN209544573U (en) | 2019-03-19 | 2019-03-19 | Filter tuner structure and filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209544573U true CN209544573U (en) | 2019-10-25 |
Family
ID=68275277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920346729.2U Active CN209544573U (en) | 2019-03-19 | 2019-03-19 | Filter tuner structure and filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209544573U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036369A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
| CN113036361A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
| CN113036367A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
| CN113036347A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
| CN113036340A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
| CN113036341A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
| CN113471652A (en) * | 2021-06-30 | 2021-10-01 | 大富科技(安徽)股份有限公司 | Filter and processing method thereof and antenna filter integrated structure |
| WO2022007467A1 (en) * | 2020-07-05 | 2022-01-13 | 华沣通信科技有限公司 | Inverted mount-type filter structure |
| CN113964464A (en) * | 2021-09-23 | 2022-01-21 | 武汉凡谷电子技术股份有限公司 | Cavity filter structure |
-
2019
- 2019-03-19 CN CN201920346729.2U patent/CN209544573U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036369A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
| CN113036361A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
| CN113036367A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
| CN113036347A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
| CN113036340A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
| CN113036341A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
| WO2022007467A1 (en) * | 2020-07-05 | 2022-01-13 | 华沣通信科技有限公司 | Inverted mount-type filter structure |
| CN113471652A (en) * | 2021-06-30 | 2021-10-01 | 大富科技(安徽)股份有限公司 | Filter and processing method thereof and antenna filter integrated structure |
| CN113471652B (en) * | 2021-06-30 | 2024-04-12 | 大富科技(安徽)股份有限公司 | Filter, processing method thereof and antenna filter integrated structure |
| CN113964464A (en) * | 2021-09-23 | 2022-01-21 | 武汉凡谷电子技术股份有限公司 | Cavity filter structure |
| CN113964464B (en) * | 2021-09-23 | 2022-07-22 | 武汉凡谷电子技术股份有限公司 | Cavity filter structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209544573U (en) | Filter tuner structure and filter | |
| CN209691920U (en) | Cavity body filter and cross coupling structure for cavity body filter | |
| CN201966309U (en) | Compact-type band-resistance filter | |
| CN102544650B (en) | Coaxial resonant cavity mixed coupling method | |
| CN106252797A (en) | A kind of bimodulus medium belt bandpass filter | |
| CN106654476A (en) | Novel four-mode dielectric band-pass filter | |
| CN105406158A (en) | Dual-mode dielectric filter enabling frequency and coupling control based metal patches | |
| CN102074775A (en) | Band elimination filter | |
| CN105826666B (en) | A kind of mobile terminal | |
| CN203260696U (en) | TM mode dielectric filter | |
| CN205921059U (en) | Cavity filter who contains adjustable capacitance coupling structure | |
| CN208078146U (en) | Cavity body filter | |
| CN105337011B (en) | A kind of coupled structure | |
| CN103296359B (en) | Filter | |
| CN201936972U (en) | Band elimination filter | |
| KR100783860B1 (en) | A dual-mode dielectric resonator | |
| CN208028197U (en) | A kind of adjustable cross coupling structure and filter | |
| CN208820037U (en) | A kind of filter and communication equipment | |
| KR200404258Y1 (en) | Coupling Boss Coaxial Filter | |
| CN203134947U (en) | Filter and coupling structure of metal resonator and medium resonator | |
| CN104600402B (en) | A kind of filter and the duplexer with the filter | |
| CN207994023U (en) | Cavity body filter | |
| CN110416671A (en) | Resonator, cavity body filter and its adjustment method | |
| CN207303308U (en) | Bandstop filter and radio-frequency devices | |
| CN108461879A (en) | Cavity body filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 315000 floor 1-2, building 8, 818 Jinyuan Road, Yinzhou District, Ningbo City, Zhejiang Province Patentee after: Ningbo Huaci Communication Technology Co.,Ltd. Address before: 2 / F, building 3, 818 Jinyuan Road, Yinzhou investment and entrepreneurship center, Ningbo, Zhejiang 315000 Patentee before: NINGBO HUACI COMMUNICATION TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address |