CN109904572A - It is a kind of to realize the structure coupled between media ceramic resonator - Google Patents
It is a kind of to realize the structure coupled between media ceramic resonator Download PDFInfo
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- CN109904572A CN109904572A CN201910089824.3A CN201910089824A CN109904572A CN 109904572 A CN109904572 A CN 109904572A CN 201910089824 A CN201910089824 A CN 201910089824A CN 109904572 A CN109904572 A CN 109904572A
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- coupling slot
- ceramic resonator
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- resonant cavity
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Abstract
The present invention relates to a kind of structures realized and coupled between media ceramic resonator, on ceramic resonator, and coupling slot are also offered between adjacent resonant cavity, and coupling slot is coupled with the realization of adjacent two resonant cavity and transmission zero.The present invention, by the size and the depth of coupling slot, can change coupling amount by opening up coupling slot between adjacent resonant cavity, to realize the coupling and transmission zero between filter cavity.
Description
Technical field
The invention belongs to the technical fields of ceramic filter more particularly to a kind of realize to couple between media ceramic resonator
Structure.
Background technique
With the continuous development of modern communication technology, the requirement to filter is higher and higher, small size, high-performance, Gao Gong
Rate, inexpensive wave filter technology are particularly important the filter in wireless communications application, the Array Antenna of 5G
Under application conditions, the size of existing metal cavity filter has been unable to satisfy the requirement of wireless communication system completely；As usual
20 watts of filters of single channel of rule, current size is at 200X100X30 millimeters or more, but the size of 5G filter requires
50X30X30 millimeters of size is hereinafter, otherwise array antenna scheme cannot achieve.
According to resonant cavity principle, the intracorporal resonance frequency of chamber, depending on the size of cavity and Jie of filling materials for wall body
Electric constant；Same packing material, the more big then resonance frequency of size are lower；Under the conditions of same size, resonance frequency and dielectric are normal
Several square roots are inversely proportional, i.e., under same cavity size, the resonance frequency of the more big then cavity of filler dielectric constant is lower, empty
Chamber resonant cavity, using air as medium, dielectric constant 1, and the available dielectric constant range of ceramic material is between 4-120, with
For 36 dielectric constants, the cavity size under same frequency condition can be reduced to 1/6th of metal cavitg, it is seen that application is situated between
Significant ability of the electric material for reduction cavity size.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide one kind.
To achieve the above object, the present invention adopts the following technical scheme:
It is a kind of to realize the structure coupled between media ceramic resonator, it is characterised in that: on ceramic resonator, and also in phase
Coupling slot is offered between adjacent resonant cavity, coupling slot is coupled with the realization of adjacent two resonant cavity and transmission zero；
Wherein, the formula between the size and resonant cavity of coupling slot is as follows:
Wherein, P is magnetic polarization coefficient；
M is the coefficient of coup；
L and D is the length and diameter of coupling slot respectively；
Z is the half for coupling slot length, i.e. z=L/2；
λ is constant.
Preferably, the structure of the coupling slot is in cuboid, or is square, or is cylindrical body.
Preferably, the coupling slot is located at the center setting of two resonant cavities.
According to the above aspect of the present invention, the present invention has at least the following advantages:
The present invention, by the size and the depth of coupling slot, can be changed by opening up coupling slot between adjacent resonant cavity
Coupling amount, to realize the coupling and transmission zero between filter cavity.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, with presently preferred embodiments of the present invention, detailed description is as follows below.
Specific embodiment
With reference to embodiment, the embodiment of the present invention is furthur described in detail.Following embodiment is used for
Illustrate the present invention, but is not intended to limit the scope of the invention.
In order to enable those skilled in the art to better understand the solution of the present invention, right below in conjunction with the embodiment of the present invention
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiment of the present invention, those skilled in the art are not making creation
Property labour under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment
It is a kind of to realize the structure coupled between media ceramic resonator, it is characterised in that: on ceramic resonator, and also in phase
Coupling slot is offered between adjacent resonant cavity, coupling slot is coupled with the realization of adjacent two resonant cavity and transmission zero；
Wherein, the formula between the size and resonant cavity of coupling slot is as follows:
Wherein, P is magnetic polarization coefficient；
M is the coefficient of coup；
L and D is the length and diameter of coupling slot respectively；
Z is the half for coupling slot length, i.e. z=L/2；
λ is constant.
The structure of heretofore described coupling slot does not do any restriction, and uses above-mentioned cuboid, or is square,
Or it is easy for operating it for cylindrical body, while also can control coupling amount.
The center setting that coupling slot is located at two resonant cavities is stated in this hair.
A kind of preparation process based on Ceramic Dielectric Filter, comprising the following steps:
Step 1: ceramic powder is granulated；
Step 2: the ceramics of granulating and forming being placed in a mold through pressure compression moulding, ceramic dry-pressing blank is formed；
Step 3: according to the frequency of required resonator, the size of ceramic block is defined, formula is as follows:
Wherein, fTEFor frequency；
C is the light velocity；
A is length；
D is width；
ε is dielectric constant；
Step 4: the temperature by the heating rate that green sheet after molding is per minute with 3-5 degree, within the scope of 1100-1700 degree
Under degree, by 8-40 hours heat preservation sinterings, waiting was cooled to ceramic block；
Step 5: the ceramic block after sinter molding is handled by grinding and polishing；
Step 6: preparing corresponding silk-screen template according to the ceramic block size in step 5；
Step 7:, will be on the surface of silver layer silk-screen to ceramic block by the screen printing method of silk-screen template；
Step 8: being burnt by the silver layer that the high temperature of 700-900 degree carries out 10 to 200min to the ceramic block after silk-screen silver layer
Knot obtains the ceramic resonator with metallization.
Claims (3)
1. a kind of realize the structure coupled between media ceramic resonator, it is characterised in that: on ceramic resonator, and also adjacent
Resonant cavity between offer coupling slot, coupling slot is coupled with the realization of adjacent two resonant cavity and transmission zero；
Wherein, the formula between the size and resonant cavity of coupling slot is as follows:
Wherein, P is magnetic polarization coefficient；
M is the coefficient of coup；
L and D is the length and diameter of coupling slot respectively；
Z is the half for coupling slot length, i.e. z=L/2；
λ is constant.
2. a kind of the structure coupled between media ceramic resonator is realized according to claim 1, it is characterised in that: the coupling
The structure for closing slot is in cuboid, or is square, or is cylindrical body.
3. a kind of the structure coupled between media ceramic resonator is realized according to claim 1, it is characterised in that: the coupling
Slot position is closed to be arranged in the center of two resonant cavities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910089824.3A CN109904572A (en) | 2019-01-30 | 2019-01-30 | It is a kind of to realize the structure coupled between media ceramic resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910089824.3A CN109904572A (en) | 2019-01-30 | 2019-01-30 | It is a kind of to realize the structure coupled between media ceramic resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109904572A true CN109904572A (en) | 2019-06-18 |
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ID=66944469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910089824.3A Pending CN109904572A (en) | 2019-01-30 | 2019-01-30 | It is a kind of to realize the structure coupled between media ceramic resonator |
Country Status (1)
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202395127U (en) * | 2011-12-15 | 2012-08-22 | 摩比天线技术（深圳）有限公司 | Coupled structure between adjacent dielectric resonators of TE01 mold and filter |
| JP2012199623A (en) * | 2011-03-18 | 2012-10-18 | Ube Ind Ltd | Dielectric resonator component |
| CN108281741A (en) * | 2017-12-18 | 2018-07-13 | 西安空间无线电技术研究所 | A kind of TE01 mould dielectric filters being easily worked debugging |
| CN108987863A (en) * | 2018-09-18 | 2018-12-11 | 苏州市协诚五金制品有限公司 | A kind of double zero crossings coupling ceramic filters |
-
2019
- 2019-01-30 CN CN201910089824.3A patent/CN109904572A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012199623A (en) * | 2011-03-18 | 2012-10-18 | Ube Ind Ltd | Dielectric resonator component |
| CN202395127U (en) * | 2011-12-15 | 2012-08-22 | 摩比天线技术（深圳）有限公司 | Coupled structure between adjacent dielectric resonators of TE01 mold and filter |
| CN108281741A (en) * | 2017-12-18 | 2018-07-13 | 西安空间无线电技术研究所 | A kind of TE01 mould dielectric filters being easily worked debugging |
| CN108987863A (en) * | 2018-09-18 | 2018-12-11 | 苏州市协诚五金制品有限公司 | A kind of double zero crossings coupling ceramic filters |
Non-Patent Citations (1)
| Title |
|---|
| 苟行磊 等: "波导带通滤波器", 《实验科学与技术》 * |
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Application publication date: 20190618 |