CN104600402B - A kind of filter and the duplexer with the filter - Google Patents
A kind of filter and the duplexer with the filter Download PDFInfo
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- CN104600402B CN104600402B CN201410855949.XA CN201410855949A CN104600402B CN 104600402 B CN104600402 B CN 104600402B CN 201410855949 A CN201410855949 A CN 201410855949A CN 104600402 B CN104600402 B CN 104600402B
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Abstract
The invention discloses a kind of filter and with the duplexer of the filter.Filter includes cavity, cover board, metal resonators and the dielectric resonator for covering cavity, metal resonators and dielectric resonator are set in cavity and central axis is parallel to each other, filter further includes setting in cavity bottom and the first coupling muscle interconnected and the second coupling muscle, first coupling muscle connects metal resonators, for cutting the magnetic field of metal resonators, second coupling muscle is used to cut the magnetic field of dielectric resonator, and then realizes the magnetic field coupling between metal resonators and dielectric resonator.The structure design difficulty of filter of the present invention is smaller, simple for assembly process, and product has preferable reliability and mutual tonality.
Description
Technical field
The present invention relates to the filter more particularly to a kind of filter in the communications field and with the duplex of the filter
Device.
Background technique
Filter is widely used in the communications field, especially field of radio frequency communication as a kind of frequency selection device.In
In base station, cavity body filter filters out clutter or interference signal outside communication signal frequency for selecting signal of communication.
In filter design, in order to greatly improve the electrical performance indexes of filter, often using the humorous of different materials
The filter for device Mixed Design of shaking, wherein metal resonators and the Mixed Design of ceramic dielectric resonator are the most universal.Existing skill
In art, in order to solve the problems, such as the energy transmission between metal resonators and ceramic dielectric resonator, in structure design would generally
Keep the installation direction of metal resonators vertical with the installation direction of ceramic dielectric resonator, i.e. metal resonators and ceramic dielectric are humorous
The central axis spatial vertical of vibration device, and a window is opened between metal resonators and ceramic dielectric resonator, it will be golden
The resonant cavity for belonging to resonator and each self-forming of ceramic dielectric resonator is connected to an entirety, to realize between two resonators
Energy transmission.
To in the research and practice of the prior art the inventors found that: in the prior art, in order to enable metal
Resonator and ceramic dielectric resonator are mutually perpendicular to installation in the cavity, wherein must have a resonator from cavity wall edge and cavity
The vertical direction of wall extends and sets, and increases the difficulty of filter construction design, and metal resonators and ceramic dielectric resonator
It is mutually perpendicular to install, the assembly process is complicated, and the reliability of product and mutual tonality are poor.
Summary of the invention
A kind of the invention mainly solves the technical problem of providing structure design difficulties smaller, simple for assembly process, product
Reliability and the preferable filter of mutual tonality and the duplexer with the filter.
The embodiment of the invention discloses a kind of filters comprising cavity, cover board, metal resonators and Jie for covering cavity
Matter resonator, metal resonators and dielectric resonator are set in cavity, wherein humorous equipped with the first resonant cavity and second in cavity
Shake chamber, and coupling window is equipped between the first resonant cavity and the second resonant cavity, and metal resonators are set in the first resonant cavity, and medium is humorous
Vibration device is set in the second coupler, and the central axis of metal resonators and dielectric resonator is parallel to each other, and filter further includes
Setting passes through coupling window in cavity bottom and the first coupling muscle interconnected and the second coupling muscle, the first coupling muscle connect metal
Resonator, for cutting the magnetic field of metal resonators, the second coupling muscle is used to cut the magnetic field of dielectric resonator, and then realizes gold
Belong to the magnetic field coupling between resonator and dielectric resonator；Wherein, the first coupling muscle, the second coupling muscle and cavity bottom wall it is integrated at
Type.
The invention also discloses a kind of duplexers, including receiving filter and emission filter, receiving filter to be connected to
Between receiving terminal and antenna terminal, emission filter, which is connected to, to be sent between terminal and antenna terminal, which is characterized in that is received
Filter and emission filter are cavity body filter as described above.
The beneficial effects of the present invention are: be in contrast to the prior art, in cavity body filter of the present invention, metal resonators
It is parallel to each other with the central axis of dielectric resonator, the first coupling muscle and the second coupling muscle pass through the bottom that coupling window is set to cavity
Portion and interconnection, the first coupling muscle connect metal resonators, and for cutting the magnetic field of metal resonators, the second coupling muscle is located at
For cutting the magnetic field of dielectric resonator between metal resonators and dielectric resonator, and then realize that metal resonators and medium are humorous
Magnetic field coupling between vibration device；So that the structure design difficulty of filter is smaller, simple for assembly process, product have compared with
Good reliability and mutual tonality.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the partial structurtes birds-eye perspective of the first embodiment of filter of the present invention；
Fig. 2 be filter shown in Fig. 1 along A-A to cross-sectional view；
Fig. 3 is the partial structurtes birds-eye perspective of the second embodiment of filter of the present invention；
Fig. 4 is cross-sectional view of the filter shown in Fig. 3 along B-B direction；
Fig. 5 is the structure chart of duplexer of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of filters comprising cavity, cover board, metal resonators and Jie for covering cavity
Matter resonator, metal resonators and dielectric resonator are set in cavity, wherein humorous equipped with the first resonant cavity and second in cavity
Shake chamber, and coupling window is equipped between the first resonant cavity and the second resonant cavity, and metal resonators are set in the first resonant cavity, and medium is humorous
Vibration device is set in the second coupler, and the central axis of metal resonators and dielectric resonator is parallel to each other, and filter further includes
Setting passes through coupling window in cavity bottom and the first coupling muscle interconnected and the second coupling muscle, the first coupling muscle connect metal
Resonator, for cutting the magnetic field of metal resonators, the second coupling muscle is used to cut the magnetic field of dielectric resonator, and then realizes gold
Belong to the magnetic field coupling between resonator and dielectric resonator.Compared with prior art, in cavity body filter of the present invention, metal is humorous
The central axis of vibration device and dielectric resonator is parallel to each other, and the first coupling muscle and the second coupling muscle pass through coupling window and be set to cavity
Bottom and interconnection, the first coupling muscle connects metal resonators, for cutting the magnetic field of metal resonators, the second coupling muscle
For cutting the magnetic field of dielectric resonator between metal resonators and dielectric resonator, and then realize metal resonators and Jie
Magnetic field coupling between matter resonator；So that the structure design difficulty of filter is smaller, simple for assembly process, product tool
There are preferable reliability and mutual tonality.
Fig. 1 and Fig. 2 is the first embodiment of filter of the present invention.In the present embodiment, filter includes cavity 10, metal
Resonator 11, dielectric resonator 12, male part 13, coupling screw rod 14 and cover board 15.
Cavity 10 has bottom wall 101 and side wall 102, and bottom wall 101 and side wall 102 surround resonant cavity 100.Resonant cavity 100 wraps
The first resonant cavity (not indicating) and the second resonant cavity (not indicating) are included, resonant window is equipped between the first resonant cavity and the second resonant cavity
(not indicating).Metal resonators 11 and dielectric resonator 12 are set to the bottom wall of cavity 10, and specifically, metal resonators 11 are arranged
In in the first resonant cavity, dielectric resonator 12 is set in the second resonant cavity；In metal resonators 11 and dielectric resonator 12
Mandrel line is parallel to each other.Male part 13 includes the first coupling muscle 131 and the second coupling muscle 132, and first couples muscle 131 and the second coupling
Close the bottom wall 101 that muscle 132 is connected with each other and is all set in cavity 10.Cover board 15 covers cavity 10.Coupling screw rod 14 is set to lid
On plate 15 or on the bottom wall of cavity 10.
Specifically, one or more cascade resonant cavity can be set in cavity 10, and each at least resonant cavity includes
First resonant cavity and the second resonant cavity；Therefore, the side wall 102 of cavity 10 includes the wall portion positioned at 10 outside of cavity, while also being wrapped
Include the wall portion between resonant cavity.
Metal resonators 11 and dielectric resonator 12 are arranged in parallel on the bottom wall 101 of cavity 10, i.e. metal resonators 11
Be parallel to each other with the central axis of dielectric resonator 12, that is, the opening direction of metal resonators 11 and dielectric resonator 12 with
The opening direction of cavity 10 is consistent.
First coupling muscle 131 connects metal resonators 11, for cutting the magnetic field of metal resonators 11, and then adjusts metal
The coupling amount of resonator 11；Second coupling muscle 132 is between metal resonators 11 and dielectric resonator 12, for cutting medium
The magnetic field of resonator 12, and then the coupling amount of dielectric resonator 12 is adjusted, to realize metal resonators 11 and dielectric resonator
Coupling between 12.
The principle that male part 13 couples metal resonators 11 and dielectric resonator 12 are as follows: the magnetic field that metal resonators generate
Direction and dielectric resonator generate magnetic field direction be mutually perpendicular to (magnetic direction of metal resonators be weft direction, and
The magnetic direction of dielectric resonator is warp direction).In specific coupling process, the magnetic field that dielectric resonator 12 generates is along right
The cavity bottom answered resonance and dissipates around up and down with the plane where the line of top, and couples 132 institute of muscle with described second
Plane be mutually perpendicular to so that dielectric resonator 12 generate magnetic field by it is corresponding second coupling muscle 132 coupled.Together
Reason, the Distribution of Magnetic Field of metal resonators 11 is on the outer surface of metal resonators and edge is parallel to where the first resonant cavity bottom
Plane Rotation resonance, and the plane for coupling 131 place of muscle with first is mutually perpendicular to, so that the magnetic field quilt that metal resonators 11 generate
Corresponding first coupling muscle 11 is coupled.
In the present embodiment, one end of the second coupling muscle 132 connects side wall 102, other end connection the first coupling muscle 131.It is excellent
Selection of land, male part 13 are L-type structure, and the first coupling muscle 131 and the second coupling muscle 132 are respectively two sides of L-shaped structure, change sentence
It talks about, the first coupling muscle 131 and the second coupling muscle 132 are mutually perpendicular to；First coupling muscle 131 and the second coupling muscle 132 and cavity
10 bottom wall 101 using machining or die casting by the way of be integrally formed it is obtained, and first coupling muscle 131 and second coupling muscle
132 are each perpendicular to the bottom wall of cavity 10.
First coupling muscle 131 and the second coupling muscle 132 are all set in the bottom wall of cavity, whether using the bottom with cavity 10
The integrally formed structure of wall 101 is also affixed to the bottom wall 101 of cavity 10, and processing technology and packaging technology are all fairly simple, easily
In realization, the coupled structure bring processing and installation error of prior art complexity is avoided, so that filter signal coupling is consistent
Property is good；Further, the first coupling muscle 131 and the second coupling 132 position of muscle are fixed, and are unlikely to deform, and then improve filter
Reliability and mutual tonality；And first coupling muscle 131 and second coupling muscle 132 be respectively used to adjustment metal resonators 11 and be situated between
The coupling amount of matter resonator 12 can ensure respectively metal resonance by improving respective width, length, height and/or shape
Best Coupling amount needed for the coupling amount of device 11 and dielectric resonator 12 reaches coupling.In preferred embodiment, the first coupling muscle 131
It is integrally formed with the bottom wall 101 of the second coupling muscle 132 and cavity 10, then further decreases the difficulty of processing of filter, improved and produce
The reliability of product and mutual tonality.
Length, width or height by increasing by the first coupling muscle 131 can increase the coupling amount of metal resonators 11, increase
Add length, width or the height of the second coupling muscle 131 that can increase the coupling amount of dielectric resonator 12.Preferably, by the first coupling
It closes muscle 131 and is arranged to structure of the top surface with rough surfaces such as waveform, zigzag or square waveforms, be equivalent to and in a disguised form prolong
The length of long first coupling muscle 131, and then promote the coupling amount of metal resonators 11.Second coupling muscle 132 is arranged to top surface
Structure with the rough surface such as waveform, zigzag or square waveform is equivalent to covert the second coupling of extension muscle 132
Length, and then promote the coupling amount of dielectric resonator 12.
Coupling screw rod 14 is set on cover board 15 or on the bottom wall of cavity 10.Preferably, coupling screw rod 14 is set to cover board
On 15, facilitate the NBC protective performance for promoting product.In the present embodiment, coupling screw rod 14 is protruded into the first resonant cavity for adjusting gold
Belong to the magnetic field of resonator 11 to adjust the coupling amount of metal resonators 11.Preferably, coupling screw rod 14 protrudes into position after resonant cavity 100
It is coupled in the area of space that muscle 132 and side wall 102 surround in the first coupling muscle 131, second.Couple the coupling of 14 distance first of screw rod
The link position of muscle 131 and the second coupling muscle 132 is closer, then couples regulating effect and be more obvious.The filtering of coupling screw rod 14 is set
Device achievees the purpose that adjust coupling effect by adjusting the length that coupling screw rod 14 protrudes into resonant cavity 100.
In other examples, coupling screw rod can also pass through cover board and protrude into coupling window, to adjust metal resonance
Coupled magnetic field between device 11 and dielectric resonator 12.
According to a kind of filter of the present embodiment, it is preferable that dielectric resonator 12 is ceramic dielectric resonator.Due to ceramics
Dielectric resonator has high dielectric constant compared to metal resonators, is conducive to the miniaturization of dielectric filter；With high stability,
Therefore the advantages that low-loss, using ceramic dielectric resonator and metal resonators Mixed Design, can greatly improve filter
Electrical performance indexes.
A kind of filter according to the present utility model, it is preferable that metal resonators 11 and dielectric resonator 12 are cylinder
Shape structure, certainly, in other examples, metal resonators 11 and dielectric resonator 12 are also possible to rectangular or other shapes
Cylinder.
Fig. 3 and Fig. 4 is the second embodiment of filter of the present invention.In the present embodiment, filter includes cavity 20, metal
Resonant rod 21, dielectric resonator 22, male part 23, coupling screw rod 24 and cover board 25.
Cavity 20 has bottom wall 201 and side wall 202, and bottom wall 201 and side wall 202 surround resonant cavity 200.Resonant cavity 200 wraps
The first resonant cavity (not indicating) and the second resonant cavity (not indicating) are included, resonant window is equipped between the first resonant cavity and the second resonant cavity
(not indicating).Metal resonators 21 and dielectric resonator 22 are set to the bottom wall of cavity 20, and specifically, metal resonators 21 are arranged
In in the first resonant cavity, dielectric resonator 22 is set in the second resonant cavity；In metal resonators 21 and dielectric resonator 22
Mandrel line is parallel to each other.Male part 23 includes the first coupling muscle 131 and the second coupling muscle 132, the first coupling muscle 131 and second
Coupling muscle 132 is connected with each other and is all set in the bottom wall 101 of cavity 10.Cover board 25 covers cavity 20.Coupling screw rod 24 is set to
On cover board 25 or on the bottom wall of cavity 20.
Metal resonators 21 and dielectric resonator 22 are arranged in parallel on the bottom wall 201 of cavity 20, i.e. metal resonators 21
Be parallel to each other with the central axis of dielectric resonator 22, that is, the opening direction of metal resonators 21 and dielectric resonator 22 with
The opening direction of cavity 20 is consistent.
First coupling muscle 231 connects metal resonators 21, for cutting the magnetic field of metal resonators 21, and then adjusts metal
The coupling amount of resonator 21；Second coupling muscle 232 is between metal resonators 21 and dielectric resonator 22, for cutting medium
The magnetic field of resonator 22, and then the coupling amount of dielectric resonator 22 is adjusted, to realize metal resonators 21 and dielectric resonator
Coupling between 22.In the present embodiment, the second coupling muscle 232 is in towards the curved arc of dielectric resonator 22, the first coupling muscle
231 extend from the central position of the second coupling muscle 232 along perpendicular to the tangential direction at link position.Preferably, the second coupling
Close 202 gap setting of side wall that the both ends of muscle 232 are adjacent.First coupling muscle 231 and the second coupling muscle 232 and cavity 20
Bottom wall 201 using machining or die casting by the way of be integrally formed it is obtained, and first coupling muscle 231 and second coupling muscle 232
It is each perpendicular to the bottom wall of cavity 20.
First coupling muscle 231 and the second coupling muscle 232 are all set in the bottom wall of cavity, whether using the bottom with cavity 20
The integrally formed structure of wall 201 is also affixed to the bottom wall 201 of cavity 20, and processing technology and packaging technology are all fairly simple, easily
In realization, the coupled structure bring processing and installation error of prior art complexity is avoided, so that filter signal coupling is consistent
Property is good；Further, the first coupling muscle 231 and the second coupling 232 position of muscle are fixed, and are unlikely to deform, be can be improved filter
Reliability and mutual tonality；And first coupling muscle 231 and second coupling muscle 232 be respectively used to adjustment metal resonators 21 and be situated between
The coupling amount of matter resonator 22 can ensure respectively metal resonance by improving respective width, length, height and/or shape
Best Coupling amount needed for the coupling amount of device 21 and dielectric resonator 22 reaches coupling.In preferred embodiment, the first coupling muscle 231
It is integrally formed with the bottom wall 201 of the second coupling muscle 232 and cavity 20, then further decreases the difficulty of processing of filter, improved and produce
The reliability of product and mutual tonality.
Length, width or height by increasing by the first coupling muscle 231 can increase the coupling amount of metal resonators 21, increase
Add length, width or the height of the second coupling muscle 231 that can increase the coupling amount of dielectric resonator 22.Preferably, by the first coupling
It closes muscle 231 and is arranged to structure of the top surface with rough surfaces such as waveform, zigzag or square waveforms, be equivalent to and in a disguised form prolong
The length of long first coupling muscle 231, and then promote the coupling amount of metal resonators 21.Second coupling muscle 232 is arranged to top surface
Structure with the rough surface such as waveform, zigzag or square waveform is equivalent to covert the second coupling of extension muscle 232
Length, and then promote the coupling amount of dielectric resonator 22.
Coupling screw rod 24 is set on cover board 25 or on the bottom wall of cavity 20.Preferably, coupling screw rod 24 is set to cover board
On 25, facilitate the NBC protective performance for promoting product.In the present embodiment, coupling screw rod 24 is protruded into the first resonant cavity for adjusting gold
Belong to the magnetic field of resonator 21 to adjust the coupling amount of metal resonators 21.Preferably, coupling screw rod 24 protrudes into position after resonant cavity 200
It is coupled in the area of space that muscle 232 and side wall 202 surround in the first coupling muscle 231, second.Couple the coupling of 24 distance first of screw rod
The link position of muscle 231 and the second coupling muscle 232 is closer, then couples regulating effect and be more obvious.The filtering of coupling screw rod 24 is set
Device achievees the purpose that adjust coupling effect by adjusting the length that coupling screw rod 24 protrudes into resonant cavity 200.
In other examples, coupling screw rod can also pass through cover board and protrude into coupling window, to adjust metal resonance
Coupled magnetic field between device 11 and dielectric resonator 12.
According to a kind of filter of the present embodiment, it is preferable that dielectric resonator 22 is ceramic dielectric resonator.Due to ceramics
Dielectric resonator has high dielectric constant compared to metal resonators, is conducive to the miniaturization of dielectric filter；With high stability,
Therefore the advantages that low-loss, using ceramic dielectric resonator and metal resonators Mixed Design, can greatly improve filter
Electrical performance indexes.
A kind of filter according to the present utility model, it is preferable that metal resonators 21 and dielectric resonator 22 are cylinder
Shape structure, certainly, in other examples, metal resonators 21 and dielectric resonator 22 are also possible to rectangular or other shapes
Cylinder.
It is different from the prior art, the male part 13,23 of filter of the present invention includes the first coupling muscle 131,132 and the second coupling
Close muscle 231,232, first coupling muscle 131,132 and second couple muscle 231,232 be all set in cavity 10,20 bottom wall 101,
201, therefore the manufacturing process of filter is fairly simple, it is easy to accomplish；Further, the first coupling muscle 131,132 and the second coupling
Conjunction muscle 231,232 positions are fixed, and are unlikely to deform, be can be improved the reliability and mutual tonality of filter.
Referring to figure 5., the present invention further provides a kind of duplexers comprising receiving filter 51 and emission filter
52, receiving filter 51 is connected between receiving terminal 53 and antenna terminal 54, and emission filter 52, which is connected to, sends terminal 55
Between antenna terminal 54.Wherein, receiving filter 51 and emission filter 52 are all made of is discussed in detail in previous embodiment
Cavity body filter.
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (9)
1. a kind of filter, the filter includes cover board, metal resonators and the dielectric resonance of cavity, the capping cavity
Device, the metal resonators and the dielectric resonator are set in the cavity, which is characterized in that the is equipped in the cavity
One resonant cavity and the second resonant cavity, are equipped with coupling window between first resonant cavity and second resonant cavity, the metal is humorous
Vibration device is set in first resonant cavity, and the dielectric resonator is set in second resonant cavity, the metal resonance
The central axis of device and the dielectric resonator is parallel to each other, the filter further include be set to across the coupling window it is described
Cavity bottom wall and the first coupling muscle interconnected and the second coupling muscle, the first coupling muscle connection metal resonators,
For cutting the magnetic field of the metal resonators, the second coupling muscle is used to cut the magnetic field of the dielectric resonator, in turn
Realize the magnetic field coupling between the metal resonators and the dielectric resonator；
Wherein, the first coupling muscle, the second coupling muscle and the cavity bottom wall are integrally formed；
The top surface of the first coupling muscle and/or the second coupling muscle has rough surface；
The filter further comprises coupling screw rod, and the coupling screw rod protrudes into first resonant cavity, and is located at described
In the area of space that the side wall of first coupling muscle, the second coupling muscle and the cavity surrounds；
The first coupling muscle and the second coupling muscle are mutually perpendicular to, and are of an L-shaped structure.
2. filter according to claim 1, which is characterized in that the first coupling muscle and the second coupling muscle one
It takes shape in and perpendicular to the bottom wall of the cavity.
3. filter according to claim 2, which is characterized in that one end of the second coupling muscle connects the side wall,
Other end connection the first coupling muscle.
4. filter according to claim 2, which is characterized in that the second coupling muscle is in towards the dielectric resonator
Curved arc, the first coupling muscle one extend from the second coupling muscle one.
5. filter according to claim 4, which is characterized in that the institute that the both ends of the second coupling muscle are adjacent
State sidewall spacers setting.
6. filter according to claim 2, which is characterized in that the first coupling muscle and/or the second coupling muscle
Top surface is wavy.
7. filter according to claim 1, which is characterized in that the coupling screw rod passes through the cover board and protrudes into described the
To adjust the magnetic field in the metal resonators in one resonant cavity.
8. filter according to claim 1, which is characterized in that the filter further comprises coupling screw rod, described
Coupling screw rod protrudes into the coupling window across the cover board to adjust the metal resonators and the dielectric resonator
Coupled magnetic field.
9. a kind of duplexer, including receiving filter and emission filter, the receiving filter are connected to receiving terminal and day
Between line terminals, the emission filter, which is connected to, to be sent between terminal and the antenna terminal, which is characterized in that the reception
Filter and emission filter are cavity body filter described in claim 1~8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410855949.XA CN104600402B (en) | 2014-12-31 | 2014-12-31 | A kind of filter and the duplexer with the filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410855949.XA CN104600402B (en) | 2014-12-31 | 2014-12-31 | A kind of filter and the duplexer with the filter |
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| CN104600402A CN104600402A (en) | 2015-05-06 |
| CN104600402B true CN104600402B (en) | 2019-11-26 |
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| CN201410855949.XA Active CN104600402B (en) | 2014-12-31 | 2014-12-31 | A kind of filter and the duplexer with the filter |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106025467A (en) * | 2016-07-25 | 2016-10-12 | 深圳市麦捷微电子科技股份有限公司 | Coupling structure of dielectric multi-cavity filter |
| CN107611537A (en) * | 2017-10-19 | 2018-01-19 | 苏州灿勤通讯技术有限公司 | It can adjust the dielectric resonator of coupling and the dielectric filter that metal resonators are mashed up |
| CN108493538B (en) * | 2018-04-11 | 2024-04-16 | 广东通宇通讯股份有限公司 | Cavity filter capable of adjusting coupling strength |
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|---|---|---|---|---|
| CN202178349U (en) * | 2011-07-15 | 2012-03-28 | 凯镭思通讯设备（上海）有限公司 | Waveguide diplexer with antenna port coupling structure |
| CN102751554A (en) * | 2012-06-29 | 2012-10-24 | 摩比天线技术（深圳）有限公司 | Mixed-mode filter |
| CN202758996U (en) * | 2012-08-30 | 2013-02-27 | 罗森伯格（上海）通信技术有限公司 | Cavity filter |
| CN203166049U (en) * | 2013-01-21 | 2013-08-28 | 深圳市海纳电讯设备有限公司 | Wave filter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151586B (en) * | 2013-02-01 | 2016-03-02 | 华为技术有限公司 | The coupling device of a kind of metal coaxial cavity and dielectric resonant chamber and filter |
| CN104037478B (en) * | 2014-05-27 | 2017-06-27 | 京信通信系统（中国）有限公司 | Dielectric filter |
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2014
- 2014-12-31 CN CN201410855949.XA patent/CN104600402B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202178349U (en) * | 2011-07-15 | 2012-03-28 | 凯镭思通讯设备（上海）有限公司 | Waveguide diplexer with antenna port coupling structure |
| CN102751554A (en) * | 2012-06-29 | 2012-10-24 | 摩比天线技术（深圳）有限公司 | Mixed-mode filter |
| CN202758996U (en) * | 2012-08-30 | 2013-02-27 | 罗森伯格（上海）通信技术有限公司 | Cavity filter |
| CN203166049U (en) * | 2013-01-21 | 2013-08-28 | 深圳市海纳电讯设备有限公司 | Wave filter |
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Address after: 233000 building 4, national financial incubation Industrial Park, 17 Yannan Road, high tech Zone, Bengbu City, Anhui Province Patentee after: Dafu Technology (Anhui) Co., Ltd Address before: 518108, Guangdong, Shenzhen province Baoan District manhole Street oyster road manhole Industrial Company Third Industrial Zone A1, A2, A3 101 and 2 layers, A4 Patentee before: SHENZHEN TATFOOK TECHNOLOGY Co.,Ltd. |