CN104037478B - Dielectric filter - Google Patents
Dielectric filter Download PDFInfo
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- CN104037478B CN104037478B CN201410228166.9A CN201410228166A CN104037478B CN 104037478 B CN104037478 B CN 104037478B CN 201410228166 A CN201410228166 A CN 201410228166A CN 104037478 B CN104037478 B CN 104037478B
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- resonator
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- dielectric
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Abstract
The cover plate above cavity is located at the invention discloses a kind of dielectric filter, including cavity and lid, two resonators mutually shielded by metallic walls are provided with cavity, each resonator includes resonator and the resonant column being placed in resonator.Dielectric filter also include through metallic walls and with the winged bar of metallic walls phase insulation set；Flying bar has two side arms, respectively in two the two of resonator resonators, for being coupled with the resonant column in corresponding resonator respectively；At the side back to resonant column for flying the side arm of bar at least one, the tuning plug of corresponding resonator is provided with through cover plate and gos deep into, tuning plug changes the stiffness of coupling of the winged bar side arm and resonant column in resonator where it by its axial movement.Through the above way, present media wave filter can adjust the stiffness of coupling flown between bar and resonant column in the case where dielectric filter cover plate is not dismantled.
Description
Technical field
The present invention relates to filter field, more particularly to a kind of dielectric filter.
Background technology
In present mobile communication technology, microwave radio device is important part.Wave filter is used as a kind of basic
Radio frequency unit, a series of indexs such as its insertion loss, Out-of-band rejection, passive intermodulation and power capacity have for the performance of whole machine
Important influence.Traditional metal coaxial cavity filter is limiting the situation of cavity size due to own loss
Under, it is impossible to quality factor (Q values) very high are obtained, causes the indexs such as Out-of-band rejection and insertion loss to be subject to certain restrictions, and
The links such as metal surface silver-plated process also can produce certain influence to passive intermodulation index.
At present, dielectric filter is gradually applied in various types of communication base station, its advantage because its loss is small, selectivity high
Have：The small and stable full temperature characteristics of high q-factor, temperature drift and high power etc..The coupling implementation and metal of TE mould dielectric filters
Coaxial cavity filter is distinguished compared in the presence of obvious, and its cross coupling design form and design difficulty are far longer than wire chamber
Form wave filter and medium T M-mode wave filter.
But because TE mould dielectric resonators magnetic distribution is concentrated and the weak characteristic of the medium couples of generation so that TE moulds are situated between
Matter resonator is generally used on the passive device that passage is narrow, selectivity is high.This resonator in use, to reach expectation
The degree of coupling, it is necessary to constantly adjustment coupling device position and physical dimension.Each adjustment of coupling device is all needed wave filter
Cover plate take apart, after the completion of adjustment, then by cover plate reduce fix, then re-start debugging.When there is combiner, wave filter
Middle multiple signals share a cover plate, debug particularly inconvenient, influence production efficiency.
The content of the invention
The present invention solves the technical problem of a kind of dielectric filter is provided, dielectric filter lid can not dismantled
In the case of plate, regulation flies the stiffness of coupling between bar and resonant column.
In order to solve the above technical problems, one aspect of the present invention is：A kind of dielectric filter is provided, including
Cavity and lid are located at the cover plate above cavity, and two resonators mutually shielded by metallic walls, each resonator bag are provided with cavity
Include resonator and the resonant column being placed in resonator.Dielectric filter also include through metallic walls and with metallic walls phase insulation set
Winged bar；Fly bar have two side arms, respectively in two the two of resonator resonators, for respectively with corresponding resonator
Interior resonant column is coupled；At the side back to resonant column for flying the side arm of bar at least one, it is provided with through cover plate and gos deep into phase
The tuning plug of resonator, tuning plug is answered to change the coupling of the winged bar side arm and resonant column in resonator where it by its axial movement
Close intensity.
Wherein, metallic walls include SI semi-insulation dielectric wall, and dielectric wall is for flying bar through setting to realize flying bar with gold
Belong to the insulation of wall.
Wherein, fly bar and tuning plug is metal material, and fly bar and tuning plug interval setting.
Wherein, two side arms for flying bar are equipped with one through cover plate and go deep into corresponding resonator back to the side of resonant column
Tuning plug.
Wherein, fly bar two side arms and be arched arm.
Wherein, arched arm with and its resonant column being coupled axial line it is vertical, and intersect with the magnetic line of force of the resonant column.
Wherein, arched arm is arranged concentrically in single line shape, and the resonant column being coupled with it.
Wherein, resonant column is TE mould dielectric resonance posts.
Wherein, dielectric filter also includes a resonator, for being coupled with two resonators respectively, to form cross-couplings
Dielectric filter.
The beneficial effects of the invention are as follows：The situation of prior art is different from, present media wave filter includes cavity, lid
Plate, two resonators, winged bar and the tuning plug that are mutually shielded by metallic walls.Wherein, each resonator includes resonator and is placed in humorous
The resonant column shaken in chamber；Fly bar through metallic walls and with metallic walls phase insulation set；Two side arms for flying bar are located at two respectively
In two resonators of resonator, it is coupled with the resonant column in corresponding resonator respectively.For regulation flies bar side arm and resonant column
Stiffness of coupling, at the side back to resonant column for flying bar at least one side arm, be provided with through cover plate and go deep into corresponding resonance
The tuning plug in chamber, tuning plug is axially movable to change the stiffness of coupling of the winged bar side arm in resonator where it and resonant column.
Through the above way, dielectric filter of the invention can in the case where dielectric filter cover plate is not dismantled, adjust fly bar with
Stiffness of coupling between resonant column.
Brief description of the drawings
Fig. 1 is the fragmentary, perspective view of the embodiment of TE moulds dielectric filter port one of the present invention.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Fig. 1 is referred to, Fig. 1 is the fragmentary, perspective view of the embodiment of TE moulds dielectric filter port one of the present invention, such as Fig. 1 institutes
Show, including cover plate 11, cavity 12, the first resonator 13, the second resonator 14, the 3rd resonator 15, winged bar 16 and tuning plug 17.
Wherein, cover plate 11 covers the top for being located at cavity 12.
First resonator 13, the second resonator 14 and the 3rd resonator 15 are respectively placed in cavity 12, and the first resonator
13 are mutually shielded with the second resonator 14 by metallic walls, the 3rd resonator 15 respectively with the first resonator 13 and the phase of the second resonator 14
Coupling, forms cross-linked state.
First resonator 13 includes resonator 131 and the resonant column 132 being placed in resonator 131, and the second resonator 14 is wrapped
Resonator 141 and the resonant column 142 being placed in resonator 141 are included, the 3rd resonator 15 includes resonator 151 and is placed in resonator
Resonant column 152 in 151.In the present embodiment, resonant column 132,142,152 is TE mould dielectric resonance posts.
Metallic walls between first resonator 13 and the second resonator 14 include SI semi-insulation dielectric wall, fly bar 16 through exhausted
Edge dielectric wall is realizing flying the insulation set of bar 16 and metallic walls.
Fly bar 16 to be supported by dielectric wall, two side arm is located in the resonant cavity 141 of resonator 131 respectively, is used for
It is coupled with resonant column 132, resonant column 142 respectively.In the present embodiment, fly bar two side arms and be arched arm, two arched arms
, the magnetic line of force vertical with the resonant column 132 and the axial line of resonant column 142 being coupled with it intersects respectively.Wherein, arched arm can be with
In single line shape, and the resonant column being coupled with it is arranged concentrically.
In the winged side arm of bar 16 1 back at the side of resonant column 132, it is provided with through cover plate 11 and gos deep into corresponding resonator 131
Tuning plug 17, tuning plug 17 can change the winged bar side arm and resonant column 132 where it in resonator 131 by its axial movement
Stiffness of coupling.Wherein, bar 16 and the interval setting of tuning plug 17 are flown.
Metal material is due to flying bar 16 and tuning plug 17, therefore the axial movement of tuning plug 17 can change humorous where it
The stiffness of coupling of the winged bar side arm and resonant column 132 that shake in chamber 131, specially changes and flies bar side arm and resonance in resonator 131
The size of the electric capacity that post 132 is formed, and then change the stiffness of coupling for flying bar side arm and resonant column 132.
In other embodiments, two side arms for flying bar 16 are equipped with a tuning back to the side of resonant column 132,142
Bar 17 is strong to correspond to the coupling between two side arms of regulation and the resonant column 132,142 of resonator 131,141 where it respectively
Degree.
In the present embodiment, the first resonator 13 and the 3rd resonator 15, the second resonator 14 and the 3rd resonator 15 it
Between be equipped with coupling window with realize coupling.
It is pointed out that the adjustable design of winged bar coupling of the present embodiment can be applied to the TE mould media with combining mode
Wave filter.Such as TE01 mould dielectric filters, including the dielectric filter described in multiple the present embodiment.
In sum, TE moulds dielectric filter of the present invention can be adjusted and fly bar in the case where filter cover board is not dismantled
Stiffness of coupling between resonant column, realizes flying the adjustable design of bar, wave filter is had more preferable electrical specifications, such as：Insertion
The small, Out-of-band rejection of loss is high and passive intermodulation is low.The adjustable winged bar design of TE moulds dielectric filter of the present invention, design is simple,
Adjustable range is big, and debugging is convenient, greatly improves the debugging efficiency of TE mould dielectric filters, and uniformity is good, is easy to batch production, and
Can be adjusted with convenient device frequency displacement and passbands specification etc..
Embodiments of the invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (9)
1. a kind of dielectric filter, including cavity and lid are located at the cover plate above the cavity, are provided with by metal in the cavity
Two resonators that wall is mutually shielded, each resonator includes resonator and the resonant column being placed in resonator, it is characterised in that also
Including through the metallic walls and with the winged bar of the metallic walls phase insulation set；
The winged bar have two side arms, respectively in two the two of resonator resonators, for respectively with corresponding resonance
Resonant column in chamber is coupled；
At the side back to resonant column of the side arm of winged bar at least one, it is provided with through cover plate and gos deep into corresponding resonator
Tuning plug, the tuning plug is strong with the coupling of resonant column by the winged bar side arm that its axial movement changes in resonator where it
Degree.
2. dielectric filter according to claim 1, it is characterised in that the metallic walls include SI semi-insulation dielectric wall,
The dielectric wall is for the winged bar through setting.
3. dielectric filter according to claim 2, it is characterised in that the winged bar and tuning plug are metal material,
And the winged bar and tuning plug interval setting.
4. dielectric filter according to claim 1, it is characterised in that two side arms of the winged bar are back to resonant column
Side is equipped with one through cover plate and gos deep into the tuning plug of corresponding resonator.
5. dielectric filter as claimed in any of claims 1 to 4, it is characterised in that the winged bar two side arms are equal
It is arched arm.
6. dielectric filter according to claim 5, it is characterised in that the arched arm with and its resonant column for being coupled
Axial line it is vertical, and intersect with the magnetic line of force of the resonant column.
7. dielectric filter according to claim 5, it is characterised in that the arched arm is in single line shape, and with its phase coupling
The resonant column of conjunction is arranged concentrically.
8. dielectric filter as claimed in any of claims 1 to 4, it is characterised in that the resonant column is TE moulds
Dielectric resonance post.
9. dielectric filter according to claim 8, it is characterised in that the dielectric filter also includes a resonator,
For being coupled with two resonator respectively, to form cross coupling dielectric filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228166.9A CN104037478B (en) | 2014-05-27 | 2014-05-27 | Dielectric filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228166.9A CN104037478B (en) | 2014-05-27 | 2014-05-27 | Dielectric filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104037478A CN104037478A (en) | 2014-09-10 |
| CN104037478B true CN104037478B (en) | 2017-06-27 |
Family
ID=51468157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410228166.9A Active CN104037478B (en) | 2014-05-27 | 2014-05-27 | Dielectric filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104037478B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600402B (en) * | 2014-12-31 | 2019-11-26 | 深圳市大富科技股份有限公司 | A kind of filter and the duplexer with the filter |
| CN107112616B (en) * | 2015-04-29 | 2020-01-03 | 华为技术有限公司 | Dielectric filter |
| CN111384499B (en) * | 2018-12-29 | 2022-04-22 | 深圳市大富科技股份有限公司 | Filter, duplexer and communication equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1901272A (en) * | 2006-07-27 | 2007-01-24 | 奥雷通光通讯设备（上海）有限公司 | Capacitive coupling device between medium loading chambers |
| CN202839929U (en) * | 2012-08-09 | 2013-03-27 | 摩比天线技术（深圳）有限公司 | Coupling structure of mixed mode resonator |
| CN203910947U (en) * | 2014-05-27 | 2014-10-29 | 京信通信系统（中国）有限公司 | Dielectric filter |
-
2014
- 2014-05-27 CN CN201410228166.9A patent/CN104037478B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1901272A (en) * | 2006-07-27 | 2007-01-24 | 奥雷通光通讯设备（上海）有限公司 | Capacitive coupling device between medium loading chambers |
| CN202839929U (en) * | 2012-08-09 | 2013-03-27 | 摩比天线技术（深圳）有限公司 | Coupling structure of mixed mode resonator |
| CN203910947U (en) * | 2014-05-27 | 2014-10-29 | 京信通信系统（中国）有限公司 | Dielectric filter |
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| Publication number | Publication date |
|---|---|
| CN104037478A (en) | 2014-09-10 |
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Effective date of registration: 20200114 Address after: 510730 No. 6, layered Road, Guangzhou economic and Technological Development Zone, Guangdong Patentee after: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Address before: 510663 Guangzhou Science City, Guangdong Shenzhou Road, No. 10 Patentee before: COMBA TELECOM SYSTEMS (CHINA) Ltd. |
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Effective date of registration: 20230825 Address after: 510730, No. 6, Jin Lu, Guangzhou economic and Technological Development Zone, Guangdong, Guangzhou Patentee after: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Patentee after: COMBA TELECOM SYSTEMS (GUANGZHOU) Ltd. Address before: 510730 No. 6, layered Road, Guangzhou economic and Technological Development Zone, Guangdong Patentee before: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. |