CN107834145A - A kind of dielectric resonator - Google Patents
A kind of dielectric resonator Download PDFInfo
- Publication number
- CN107834145A CN107834145A CN201711307370.XA CN201711307370A CN107834145A CN 107834145 A CN107834145 A CN 107834145A CN 201711307370 A CN201711307370 A CN 201711307370A CN 107834145 A CN107834145 A CN 107834145A
- Authority
- CN
- China
- Prior art keywords
- support member
- hole
- dielectric resonator
- ceramic body
- pedestal
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/10—Dielectric resonators
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Abstract
The invention discloses a kind of dielectric resonator.It includes pedestal and the case being located on pedestal,Pedestal is provided with dielectric resonator body,Microstrip line,Circuit board,First support member and the second support member,First support member and the second support member are spaced and be vertically fixed on pedestal,Circuit board is vertically connected on the upper end of the first support member and the second support member,And the cavity of at least one side opening is formed with the first support member and the second support member,Microstrip line is on circuit board,Dielectric resonator body is set adjacent to cavity,Dielectric resonator body includes ceramic body and the alumina holder being supported in below ceramic body,Ceramic body offers at least two first through hole and at least two second through holes vertically,At least two first through hole and at least two second through holes circumferentially alternate distribution,The both ends of ceramic body have been covered each by short circuit metal plate,Alumina holder offers third through-hole vertically.The present invention can improve quality factor.
Description
Technical field
The present invention relates to technical field of communication equipment, more particularly to a kind of dielectric resonator.
Background technology
In a communications device, the performance that the performance of local vibration source receives to signal has important influence.Local vibration source generally by
The local oscillator source chip or dielectric resonator of specific frequency produces.The structure of local oscillator source chip is simple, but expensive, and
External reference clock frequency is needed, therefore application field is smaller.And dielectric resonator is by its small volume, quality factor are high, tie
Structure is simple, low cost and other advantages, and reality is relatively broad in using.
However, dielectric resonator needs to meet low-loss and the requirement of low phase noise in actual applications, due to medium
The quality factor of resonator are inversely proportional with loss, and low quality factor can increase the phase noise of system, therefore to reduce damage
Consumption and phase noise, can only improve quality factor.But the quality of dielectric resonator is improved there is presently no good method
Factor.
The content of the invention
The present invention solves the technical problem of provide a kind of dielectric resonator, it is possible to increase quality factor.
In order to solve the above technical problems, one aspect of the present invention is：A kind of dielectric resonator is provided, including
Pedestal and the case being located on the pedestal, the pedestal be provided with dielectric resonator body, microstrip line, circuit board, first
Support member and the second support member, first support member and the second support member are spaced and are vertically fixed on the pedestal, institute
State the upper end that circuit board is vertically connected on first support member and the second support member, and with first support member and second
Support member forms the cavity of at least one side opening, and for the microstrip line on the circuit board, the dielectric resonator body is neighbouring described
Cavity is set, and the dielectric resonator body includes ceramic body and the alumina holder being supported in below the ceramic body, institute
State ceramic body and offer at least two first through hole and at least two second through holes, at least two first through hole vertically
Distribution is circumferentially alternateed with least two second through holes, the diameter of the first through hole is more than the straight of second through hole
Footpath, the both ends of the ceramic body have been covered each by short circuit metal plate, and the alumina holder offers and described vertically
The third through-hole that one through hole and the second through hole at least partly communicate.
Preferably, a diameter of 8 ± 0.1mm of the first through hole, a diameter of 6 ± 0.1mm of second through hole.
Preferably, four corner edges of the ceramic body are formed with chamfering.
Preferably, the tapping of the first through hole and the second through hole is formed with chamfering.
Preferably, first support member and the second support member are located at the lower section of the circuit board opposite end respectively.
Preferably, the width of the microstrip line is less than the spacing of first support member and the second support member.
The beneficial effects of the invention are as follows：The situation of prior art is different from, the present invention is by setting two support members to prop up
Circuit board is supportted, two support members form the cavity of at least one side opening with circuit board, microstrip line is set on circuit board, neighbouring cavity
Dielectric resonator body is set, and the ceramic body of dielectric resonator body offers the through hole of two kinds of different-diameters, so, below microstrip line
Electromagnetic wave can be coupled by cavity with dielectric resonator body, so as to which the electromagnetic wave absorbed by pedestal reduces, electromagnetic wave
Loss also just reduces, and then can improve quality factor.
Brief description of the drawings
Fig. 1 is the cross section structure diagram of dielectric resonator provided in an embodiment of the present invention.
Fig. 2 is the schematic top plan view of the ceramic body in Fig. 1.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Refering to Fig. 1 and Fig. 2, the dielectric resonator of the embodiment of the present invention includes pedestal 10 and the cover being located on pedestal 10
Shell 20, pedestal 10 are provided with dielectric resonator body 30, microstrip line 40, circuit board 50, the first support member 60 and the second support member 70.
First support member 60 and the second support member 70 are spaced and be vertically fixed on pedestal 10, and circuit board 50 vertically connects
The upper end of the first support member 60 and the second support member 70 is connected on, and at least one is formed with the first support member 60 and the second support member 70
The cavity 51 of face opening, microstrip line 40 is on circuit board 50, and dielectric resonator body 30 is set adjacent to cavity 51, dielectric resonator body 30
Including ceramic body 31 and be supported in the alumina holder 32 of the lower section of ceramic body 31, ceramic body 31 offer vertically to
Few two through holes 302 of first through hole 301 and at least two second, at least two first through hole 301 and at least two second through holes
302 circumferentially alternate distribution, and the diameter of first through hole 301 is more than the diameter of the second through hole 302, the both ends of ceramic body 31
Short circuit metal plate 33 is covered each by, alumina holder 32 offers with the through hole 302 of first through hole 301 and second at least vertically
The third through-hole 303 that part communicates.In the present embodiment, a diameter of 8 ± 0.1mm of first through hole 301, the second through hole 302
A diameter of 6 ± 0.1mm.
In order to increase manufacturability, four corner edges of ceramic body 31 are formed with chamfering, the through hole of first through hole 301 and second
302 tapping is also formed with chamfering.
Because dielectric resonator body 30 is containing ceramics, and ceramics are used as solid dielectric material, and there is relatively low electromagnetic medium to damage
Consumption.Meanwhile dielectric resonator body 30 is worked with microstrip line 40 by magnetic coupling, oscillating circuit can be applied to as frequency-selective network
In.Dielectric resonator body 30 with the through hole 302 of first through hole 301 and second, the through hole 302 of first through hole 301 and second due to replacing
Setting can realize two kinds of different frequencies.
Microstrip line 40 can be formed on circuit board 50 using process for copper is covered.After microstrip line 40 is set, circuit board 50,
First support member 60, the second support member 70 and pedestal 10 enclose the cavity 51 to form at least one side opening.Due to cavity 51 not only
For hollow structure, and at least one side opening, therefore cavity 51 can be caused to be communicated with outside, the damage that electromagnetic wave passes through cavity 51
Consumption is substantially reduced, thus the electromagnetic wave of the lower section of microstrip line 40 can be coupled by cavity 51 with dielectric resonator body 30, also
It is to say, is reduced by the electromagnetic wave that pedestal 10 absorbs, the loss of electromagnetic wave also just reduces, and then can improve quality factor,
Reduce phase noise., the final performance for lifting dielectric oscillator.
It should be noted that due to the both-end short circuit of ceramic body 31, thus can further improve quality factor, reduce
Loss, while there is wide tuning range, good temp characteristic, small volume, high reliability.
In the present embodiment, the first support member 60 and the second support member 70 are located under the opposite end of circuit board 50 respectively
The width of square microstrip lines 40 is less than the spacing of the first support member 60 and the second support member 70.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The 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 (6)
1. a kind of dielectric resonator, it is characterised in that including pedestal and the case being located on the pedestal, on the pedestal
Provided with dielectric resonator body, microstrip line, circuit board, the first support member and the second support member, first support member and the second support
Part is spaced and is vertically fixed on the pedestal, and the circuit board is vertically connected on first support member and the second support
The upper end of part, and be located at first support member and the cavity of the second support member formation at least one side opening, the microstrip line
On the circuit board, the dielectric resonator body is set adjacent to the cavity, and the dielectric resonator body includes ceramic body and branch
Support the alumina holder below the ceramic body, the ceramic body offers at least two first through hole and extremely vertically
Few two the second through holes, at least two first through hole and at least two second through holes circumferentially alternate distribution, described
The diameter of first through hole is more than the diameter of second through hole, and the both ends of the ceramic body have been covered each by short circuit metal plate,
The alumina holder offers the third through-hole at least partly communicated with the first through hole and the second through hole vertically.
2. dielectric resonator according to claim 1, it is characterised in that a diameter of 8 ± 0.1mm of the first through hole,
A diameter of 6 ± 0.1mm of second through hole.
3. dielectric resonator according to claim 1, it is characterised in that four corner edges of the ceramic body are formed with
Angle.
4. dielectric resonator according to claim 3, it is characterised in that the tapping of the first through hole and the second through hole
Formed with chamfering.
5. dielectric resonator according to claim 1, it is characterised in that the first support member and the second support member difference
Positioned at the lower section of the circuit board opposite end.
6. dielectric resonator according to claim 1, it is characterised in that the width of the microstrip line is less than described first
The spacing of support member and the second support member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711307370.XA CN107834145A (en) | 2017-12-11 | 2017-12-11 | A kind of dielectric resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711307370.XA CN107834145A (en) | 2017-12-11 | 2017-12-11 | A kind of dielectric resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107834145A true CN107834145A (en) | 2018-03-23 |
Family
ID=61642923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711307370.XA Pending CN107834145A (en) | 2017-12-11 | 2017-12-11 | A kind of dielectric resonator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107834145A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013085357A1 (en) * | 2011-12-07 | 2013-06-13 | Chang Ik Soo | Ceramic panel resonator using a pseudo tm110 mode, and rf dual mode filter using the resonator |
| CN105514564A (en) * | 2016-01-04 | 2016-04-20 | 张家港保税区灿勤科技有限公司 | Dual mode medium resonator |
| CN106059499A (en) * | 2016-07-20 | 2016-10-26 | 深圳市华讯星通讯有限公司 | Dielectric resonator oscillator |
| CN106299558A (en) * | 2016-08-24 | 2017-01-04 | 张家港保税区灿勤科技有限公司 | high reliability dielectric waveguide filter |
| CN206148589U (en) * | 2016-08-24 | 2017-05-03 | 张家港保税区灿勤科技有限公司 | Little volume dielectric waveguide wave filter |
| CN207719381U (en) * | 2017-12-11 | 2018-08-10 | 四川九鼎智远知识产权运营有限公司 | A kind of dielectric resonator |
-
2017
- 2017-12-11 CN CN201711307370.XA patent/CN107834145A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013085357A1 (en) * | 2011-12-07 | 2013-06-13 | Chang Ik Soo | Ceramic panel resonator using a pseudo tm110 mode, and rf dual mode filter using the resonator |
| CN105514564A (en) * | 2016-01-04 | 2016-04-20 | 张家港保税区灿勤科技有限公司 | Dual mode medium resonator |
| CN106059499A (en) * | 2016-07-20 | 2016-10-26 | 深圳市华讯星通讯有限公司 | Dielectric resonator oscillator |
| CN106299558A (en) * | 2016-08-24 | 2017-01-04 | 张家港保税区灿勤科技有限公司 | high reliability dielectric waveguide filter |
| CN206148589U (en) * | 2016-08-24 | 2017-05-03 | 张家港保税区灿勤科技有限公司 | Little volume dielectric waveguide wave filter |
| CN207719381U (en) * | 2017-12-11 | 2018-08-10 | 四川九鼎智远知识产权运营有限公司 | A kind of dielectric resonator |
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Application publication date: 20180323 |
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| RJ01 | Rejection of invention patent application after publication |