CN110011012A - A kind of dielectric filter - Google Patents
A kind of dielectric filter Download PDFInfo
- Publication number
- CN110011012A CN110011012A CN201910427222.4A CN201910427222A CN110011012A CN 110011012 A CN110011012 A CN 110011012A CN 201910427222 A CN201910427222 A CN 201910427222A CN 110011012 A CN110011012 A CN 110011012A
- Authority
- CN
- China
- Prior art keywords
- cavity
- dielectric filter
- resonant cavity
- filter
- present
- 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.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- 229910052594 sapphire Inorganic materials 0.000 claims description 3
- 239000010980 sapphire Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
Abstract
A kind of dielectric filter, including, cavity, the first resonant cavity and the second resonant cavity, wherein the cavity is cuboid；First resonant cavity, second resonant cavity setting are on the cavity described in cavity；Between first resonant cavity, second resonant cavity, it is additionally provided with strip groove.Dielectric filter of the invention can respectively generate a zero point in passband or so.
Description
Technical field
The present invention relates to wave filter technology field, a kind of method realized more particularly to dielectric filter zero point.
Background technique
The communication 5G epoch arrive, and just propose to device size and heating property to the promotion of filter dosage and strictly want
It asks, and another technological trend of 5G is femto cell, while volume to filtering and power consumption propose requirements at the higher level, ceramics are situated between
Matter filter obtains large-scale application in Massive mimo antenna by its size advantage, since communication frequency band increases to band
Outer inhibition proposes requirements at the higher level, and due to structure and magnetic distribution, positive and negative zero point realization is relatively difficult, this is to filter
Design proposes higher standard.
Summary of the invention
In order to solve the shortcomings of the prior art, the purpose of the present invention is to provide a kind of dielectric filter, Ke Yi
Passband or so respectively generates a zero point.
To achieve the above object, dielectric filter provided by the invention, including, cavity, the first resonant cavity and second are humorous
Shake chamber, wherein
The cavity is cuboid；
First resonant cavity, second resonant cavity setting are on the cavity described in cavity；
Between first resonant cavity, second resonant cavity, it is additionally provided with strip groove.
Further, the long one third for being greater than the housing width of the groove width of the strip groove, depth are greater than described
The half of cavity depth.
Further, the dielectric filter is nonmetal medium material filter.
Further, the dielectric filter is Ceramic Dielectric Filter, sapphire dielectric filter or quartz medium
Filter.
Dielectric filter of the invention can be easy to change planar structure topological realization direction of an electric field, generate zero point, mention
High filter Out-of-band rejection.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, and with it is of the invention
Embodiment together, is used to explain the present invention, and is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is dielectric filter cross-sectional view according to the present invention；
Fig. 2 is dielectric filter top view according to the present invention；
Fig. 3 is dielectric filter waveform diagram according to the present invention.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Fig. 1 is dielectric filter cross-sectional view according to the present invention, and Fig. 2 is dielectric filter top view according to the present invention,
As illustrated in fig. 1 and 2, dielectric filter of the invention, including, cavity 1, the first resonant cavity 2, the second resonant cavity 3 and strip groove
2, wherein
Cavity 1 is rectangular shape, is provided with the first resonant cavity 2 and the second resonant cavity 3；
Strip groove 4 between the first resonant cavity 2 and the second resonant cavity 3, the groove width of strip groove 4 is long be greater than housing width three/
One, the depth of the strip groove 4 is greater than the half of the cavity depth.
The present invention is existed by the way that strip groove 4, the dielectric filter for being are arranged between the first resonant cavity 2 and the second resonant cavity 4
One zero point of each generation in the left and right of passband.
Fig. 3 is dielectric filter waveform diagram according to the present invention, as shown in figure 3,3.5GHz-3.6GHz bandpass filtering
Device S parameter makes the outer 3300-3480MHz > 15dB and 3620-3780MHz > 15dB suppression of passband with each zero point in outer both sides
System.
Dielectric filter of the invention is that nonmetal medium material filter, such as ceramics, sapphire, quartz etc. are nonmetallic
Material filter product.
Those of ordinary skill in the art will appreciate that: the foregoing is only a preferred embodiment of the present invention, and does not have to
In the limitation present invention, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art
For, still can to foregoing embodiments record technical solution modify, or to part of technical characteristic into
Row equivalent replacement.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should all include
Within protection scope of the present invention.
Claims (4)
1. a kind of dielectric filter, including, cavity, the first resonant cavity and the second resonant cavity, which is characterized in that
The cavity is cuboid；
First resonant cavity, second resonant cavity setting are on the cavity described in cavity；
Between first resonant cavity, second resonant cavity, it is additionally provided with strip groove.
2. dielectric filter according to claim 1, which is characterized in that the groove width of the strip groove is long to be greater than the cavity
The one third of width, depth are greater than the half of the cavity depth.
3. dielectric filter according to claim 1, which is characterized in that the dielectric filter is nonmetal medium material
Filter.
4. dielectric filter according to claim 1, which is characterized in that the dielectric filter is ceramic dielectric filtering
Device, sapphire dielectric filter or quartz medium filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910427222.4A CN110011012A (en) | 2019-05-22 | 2019-05-22 | A kind of dielectric filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910427222.4A CN110011012A (en) | 2019-05-22 | 2019-05-22 | A kind of dielectric filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110011012A true CN110011012A (en) | 2019-07-12 |
Family
ID=67177658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910427222.4A Pending CN110011012A (en) | 2019-05-22 | 2019-05-22 | A kind of dielectric filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110011012A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1768445A (en) * | 2003-04-07 | 2006-05-03 | Cts公司 | Ultra-thin type ceramic RF filter |
| CN206864583U (en) * | 2017-04-25 | 2018-01-09 | 四川省韬光通信有限公司 | A kind of dielectric filter be easy to regulating frequency and couple bandwidth |
| CN108598635A (en) * | 2013-05-31 | 2018-09-28 | 华为技术有限公司 | Dielectric filter, transceiver and base station |
| 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 |
| CN109755700A (en) * | 2019-03-07 | 2019-05-14 | 苏州波发特电子科技有限公司 | A kind of capacitive coupling structure of dielectric filter |
| CN209730118U (en) * | 2019-05-22 | 2019-12-03 | 江苏贝孚德通讯科技股份有限公司 | A kind of dielectric filter |
-
2019
- 2019-05-22 CN CN201910427222.4A patent/CN110011012A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1768445A (en) * | 2003-04-07 | 2006-05-03 | Cts公司 | Ultra-thin type ceramic RF filter |
| CN108598635A (en) * | 2013-05-31 | 2018-09-28 | 华为技术有限公司 | Dielectric filter, transceiver and base station |
| CN206864583U (en) * | 2017-04-25 | 2018-01-09 | 四川省韬光通信有限公司 | A kind of dielectric filter be easy to regulating frequency and couple bandwidth |
| 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 |
| CN109755700A (en) * | 2019-03-07 | 2019-05-14 | 苏州波发特电子科技有限公司 | A kind of capacitive coupling structure of dielectric filter |
| CN209730118U (en) * | 2019-05-22 | 2019-12-03 | 江苏贝孚德通讯科技股份有限公司 | A kind of dielectric filter |
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