CN109786910A - A kind of ceramic waveguide filter for realizing cross-coupling zero point - Google Patents
A kind of ceramic waveguide filter for realizing cross-coupling zero point Download PDFInfo
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- CN109786910A CN109786910A CN201910198741.8A CN201910198741A CN109786910A CN 109786910 A CN109786910 A CN 109786910A CN 201910198741 A CN201910198741 A CN 201910198741A CN 109786910 A CN109786910 A CN 109786910A
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Abstract
The present invention relates to a kind of ceramic waveguide filters for realizing cross-coupling zero point, two coupling slots are offered between the two frequency hole of filter of monolithic, wherein, one coupling slot is located at the front of filter, another coupling slot is located at the back side of filter, be not connected to mutually, and be oppositely arranged between the two between the two, by up and down with respect to and constitute a capacitive coupling between the coupling slot and two frequency holes of not intercommunication.The present invention is able to achieve the cross-coupling zero point of filter.
Description
Technical field
The invention belongs to the technical field of ceramic filter more particularly to a kind of ceramic waveguides for realizing cross-coupling zero point
Filter.
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 200*100*30 millimeters or more, but the size of 5G filter is required in 50*
30*30 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.
With the development of modern communication technology, the miniaturization of communication equipment is a kind of inevitable trend, especially in 5G
In generation, aobvious particularly important of the miniaturization of communication equipment, in 5G communication, filter is also always towards miniaturization, still
Filter size with communication bandwidth required for reality is contradictory, after size reduction, between frequency and frequency coupling after reducing
Crossed belt is wide not enough, causes product passband that can not broaden.
Summary of the invention
In order to solve the above technical problems, realizing cross-linked ceramic waveguide filtering the object of the present invention is to provide a kind of
Device.
To achieve the above object, the present invention adopts the following technical scheme:
It is a kind of to realize cross-linked ceramic waveguide filter, it is characterised in that: the two frequency hole of filter of monolithic it
Between offer two coupling slots, wherein a coupling slot is located at the front of filter, and another coupling slot is located at the back side of filter, two
Be not connected to mutually between person, and be oppositely arranged between the two, by up and down with respect to and between the coupling slot and two frequency holes of not intercommunication
Constitute a capacitive coupling.
Preferably, the coupling slot is square groove.
Preferably, the coupling slot is laterally provided between two frequency holes, wherein lateral both ends are provided with filter
On.
Preferably, the coupling slot is laterally provided between two frequency holes, wherein the coupling slot in outside and filter it is outer
Side connects setting.
Preferably, the coupling slot is laterally provided between two frequency holes, wherein on the coupling slot and filter of inside
T-type coupling slot connects.
Preferably, the structure snd size setting all the same of the coupling slot opened up of the filter on the front and back.
According to the above aspect of the present invention, the present invention has at least the following advantages:
The present invention makes filter while forming cross-coupling by opening up opposite coupling slot between two frequency holes
The coupling slot opened up is allowed to constitute a capacitive coupling, to realize the cross-coupling zero point of filter entirety.In conjunction with simple, facilitate behaviour
Make.
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, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the positive structure schematic that coupling slot of the present invention and filter are not penetrated；
Fig. 2 is the structural schematic diagram penetrated through on the outside of coupling slot of the present invention and filter；
Fig. 3 is the structural schematic diagram of coupling slot of the present invention and the perforation of filter inside groove.
Fig. 4 is the structure schematic diagram that coupling slot of the present invention and filter are not penetrated；
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction with attached in the embodiment of the present invention
Figure, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only this
Invention a part of the embodiment, instead of all the embodiments.Embodiments of the present invention, which are generally described and illustrated herein in the accompanying drawings
Component can arrange and design with a variety of different configurations.Therefore, the implementation of the invention to providing in the accompanying drawings below
The detailed description of example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiment of the present invention, those skilled in the art are obtained all without making creative work
Other embodiments shall fall within the protection scope of the present invention.
Embodiment
As shown in Figure 1 and Figure 4, a kind of to realize cross-linked ceramic waveguide filter, it is characterised in that: in the filter of monolithic
Wave device offers two coupling slots between two frequency holes, wherein a coupling slot is located at the front of filter, and another coupling slot is located at filter
The back side of wave device is not connected to mutually between the two, and is oppositely arranged between the two, by up and down with respect to and not intercommunication coupling slot with
A capacitive coupling is constituted between two frequency holes, the structure snd size of the coupling slot opened up of the filter on the front and back are equal
Identical setting.
Heretofore described coupling slot is square groove.
Embodiment one
As shown in Figure 1, the coupling slot is laterally provided between two frequency holes, wherein lateral both ends are provided with filter
On wave device, between the 4 frequency holes offered on script filter and T-type coupling slot, it is able to achieve cross-coupling, opposite
After opening up coupling slot that is opposite and not penetrating through between frequency hole again, make it to constitute a capacitive coupling, cross-coupling and capacitive coupling
The intersection of conjunction constitutes cross-coupling zero point.
Embodiment two
As shown in Fig. 2, the coupling slot is laterally provided between two frequency holes, wherein the coupling slot and filter in outside
Outside connect setting.Between the 4 frequency holes offered on script filter and T-type coupling slot, it is able to achieve intersection coupling
It closes, after opening up coupling slot that is opposite and not penetrating through again between opposite frequency hole, makes it to constitute a capacitive coupling, intersect coupling
It closes and capacitively coupled intersection constitutes cross-coupling zero point.
Embodiment three
As shown in figure 3, the coupling slot is laterally provided between two frequency holes, wherein the coupling slot and filter of inside
On T-type coupling slot connect.Between the 4 frequency holes offered on script filter and T-type coupling slot, it is able to achieve intersection
Coupling makes it to constitute a capacitive coupling, intersect after opening up coupling slot that is opposite and not penetrating through again between opposite frequency hole
Coupling and capacitively coupled intersection constitute cross-coupling zero point.
Coupling slot is the direction opened up changed in above-described embodiment one, embodiment two and embodiment three, and it is former to work
It manages identical.
And opening up the length of coupling slot and depth can obtain according to formula
P is magnetic polarization coefficient；
M is the coefficient of coup；
L and D is the length and diameter of coupling aperture respectively；
Z is the half for coupling hole length, i.e. z=L/2；
λ is constant.
The present invention makes filter while forming cross-coupling by opening up opposite coupling slot between two frequency holes
The coupling slot opened up is allowed to constitute a capacitive coupling, to realize the cross-coupling zero point of filter entirety.In conjunction with simple, facilitate behaviour
Make.
The above is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is several improvement and
Modification, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of ceramic waveguide filter for realizing cross-coupling zero point, it is characterised in that: in the two frequency hole of filter of monolithic
Between offer two coupling slots, wherein a coupling slot is located at the front of filter, and another coupling slot is located at the back side of filter,
Be not connected to mutually, and be oppositely arranged between the two between the two, by up and down with respect to and not intercommunication coupling slot and two frequency holes it
Between constitute a capacitive coupling.
2. a kind of ceramic waveguide filter for realizing cross-coupling zero point according to claim 1, it is characterised in that: described
Coupling slot is square groove.
3. a kind of ceramic waveguide filter for realizing cross-coupling zero point according to claim 1 or 2, it is characterised in that:
The coupling slot is laterally provided between two frequency holes, wherein lateral both ends are provided on filter.
4. a kind of ceramic waveguide filter for realizing cross-coupling zero point according to claim 1 or 2, it is characterised in that:
The coupling slot is laterally provided between two frequency holes, wherein connect setting on the outside of the coupling slot and filter in outside.
5. a kind of ceramic waveguide filter for realizing cross-coupling zero point according to claim 1 or 2, it is characterised in that:
The coupling slot is laterally provided between two frequency holes, wherein the coupling slot of inside is mutually passed through with the T-type coupling slot on filter
It is logical.
6. a kind of ceramic waveguide filter for realizing cross-coupling zero point according to claim 1 or 2, it is characterised in that:
The structure snd size setting all the same of the coupling slot opened up of the filter on the front and back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910198741.8A CN109786910A (en) | 2019-03-15 | 2019-03-15 | A kind of ceramic waveguide filter for realizing cross-coupling zero point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910198741.8A CN109786910A (en) | 2019-03-15 | 2019-03-15 | A kind of ceramic waveguide filter for realizing cross-coupling zero point |
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| Publication Number | Publication Date |
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| CN109786910A true CN109786910A (en) | 2019-05-21 |
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| CN201910198741.8A Pending CN109786910A (en) | 2019-03-15 | 2019-03-15 | A kind of ceramic waveguide filter for realizing cross-coupling zero point |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265754A (en) * | 2019-07-16 | 2019-09-20 | 深圳市国人射频通信有限公司 | A Dielectric Waveguide Filter |
| WO2021043099A1 (en) * | 2019-09-02 | 2021-03-11 | 深圳顺络电子股份有限公司 | Capacitance coupling structure, dielectric filter, communication antenna, and base station |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130049898A1 (en) * | 2011-08-23 | 2013-02-28 | Mesaplexx Pty Ltd | Filter |
| 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 |
| CN109309272A (en) * | 2018-11-14 | 2019-02-05 | 苏州波发特电子科技有限公司 | A kind of capacitive coupling structure for dielectric filter |
| CN109461995A (en) * | 2018-12-27 | 2019-03-12 | 苏州艾福电子通讯有限公司 | A kind of waveguide filter using ceramic dielectric |
-
2019
- 2019-03-15 CN CN201910198741.8A patent/CN109786910A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130049898A1 (en) * | 2011-08-23 | 2013-02-28 | Mesaplexx Pty Ltd | Filter |
| 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 |
| CN109309272A (en) * | 2018-11-14 | 2019-02-05 | 苏州波发特电子科技有限公司 | A kind of capacitive coupling structure for dielectric filter |
| CN109461995A (en) * | 2018-12-27 | 2019-03-12 | 苏州艾福电子通讯有限公司 | A kind of waveguide filter using ceramic dielectric |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265754A (en) * | 2019-07-16 | 2019-09-20 | 深圳市国人射频通信有限公司 | A Dielectric Waveguide Filter |
| WO2021043099A1 (en) * | 2019-09-02 | 2021-03-11 | 深圳顺络电子股份有限公司 | Capacitance coupling structure, dielectric filter, communication antenna, and base station |
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