CN108987863A - A kind of double zero crossings coupling ceramic filters - Google Patents
A kind of double zero crossings coupling ceramic filters Download PDFInfo
- Publication number
- CN108987863A CN108987863A CN201811083424.3A CN201811083424A CN108987863A CN 108987863 A CN108987863 A CN 108987863A CN 201811083424 A CN201811083424 A CN 201811083424A CN 108987863 A CN108987863 A CN 108987863A
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- China
- Prior art keywords
- ceramic
- coupling
- pieces
- filter
- resonator
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- 239000000919 ceramic Substances 0.000 title claims abstract description 78
- 230000008878 coupling Effects 0.000 title claims abstract description 26
- 238000010168 coupling process Methods 0.000 title claims abstract description 26
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 26
- 238000006880 cross-coupling reaction Methods 0.000 claims abstract description 17
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 5
- 238000005192 partition Methods 0.000 claims abstract description 5
- 238000002955 isolation Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 238000001465 metallisation Methods 0.000 abstract description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method 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
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
- H01P11/007—Manufacturing frequency-selective devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/56—Monolithic crystal filters
- H03H9/562—Monolithic crystal filters comprising a ceramic piezoelectric layer
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of double zero crossings to couple ceramic filter, by 4 pieces of ceramic resonators based on the integrated ceramic block of totally-enclosed metallization, 4 pieces of ceramic resonators are isolated by partition grooves, and it is connected by connection ceramic body, form a ceramic block entirety, the connection ceramic body provides coupling between each ceramic resonator, the intensity coupled is needed to determine the size for contacting ceramic body according to each ceramic resonator, design has cross-coupling hole between 2 pieces of ceramic resonators, the coupling of adjacent ceramic resonator may be implemented in the cross-coupling hole, so as to adjust electromagnetic field phase, reach the function of double zero points.The present invention significantly improves the rejection ability outside the nearly passband band of filter, the performance of boostfiltering device.
Description
Technical field
The present invention relates to filter fields, couple ceramic filter more particularly, to a kind of double zero crossings.
Background technique
The development of radio communication base station, the development trend that the miniaturization of filter necessitates；The filter of full ceramic waveguide formula
Wave device can be realized the ideal solution of base station filters miniaturization；Since to need zero point high close to realize for bandpass filter
Out-of-band rejection ability, therefore the design of the zero point of filter and realization become extremely important, otherwise, the technical indicator of filter is difficult to reach
To the requirement of Out-of-band rejection；The present invention realizes by designing suitable coupling slot in 4 pieces of ceramic resonance chambers and intersects coupling
The function of conjunction, and the size by adjusting coupling slot, the parameters such as position adjust cross-coupling amount, to adjust cross-coupling
Zero frequency and intensity, realize the ideal functionality of filter.
Summary of the invention
Aiming at the problem that existing filter, the present invention proposes a kind of double zero crossings coupling ceramic filters, can be significant
Improve the rejection ability outside the nearly passband band of filter, the performance of boostfiltering device.
To achieve the above object, the present invention provides the following technical scheme that
A kind of double zero crossings coupling ceramic filters, by 4 pieces of ceramic resonators with the integrated ceramics of totally-enclosed metallization
Based on block, 4 pieces of ceramic resonators are isolated by partition grooves, and are connected by connection ceramic body, and a ceramic block is formed
Whole, 4 pieces of ceramic resonators of isolation form discrete resonant cavity, and the frequency of the resonant cavity is true according to Mai Kesiwei equation institute
Fixed, related to the ceramic dielectric constant of each ceramic resonator, the size of ceramic resonator, 4 pieces of ceramic resonators are formed
Resonant cavity frequency according to the index request careful design of filter determine, the connection ceramic body for each ceramic resonator it
Between provide coupling, need the intensity that couples to determine the size of the connection ceramic body, 2 pieces of potteries according to each ceramic resonator
Design has cross-coupling slot between porcelain resonator, and the coupling of adjacent ceramic resonator may be implemented in the cross-coupling slot,
So as to adjust electromagnetic field phase, reach the function of double zero points.
Preferably, the size of the cross-coupling slot, adjustable stiffness of coupling are adjusted, to adjust the band of filter
Outer suppression level.
By using above-mentioned technical proposal, the present invention can significantly improve the rejection ability outside the nearly passband band of filter,
The performance of boostfiltering device.
Detailed description of the invention
Fig. 1 is positive structure schematic of the invention；
Fig. 2 is reverse structure schematic of the invention.
Appended drawing reference in figure: 1, ceramic resonator；2, partition grooves；3, ceramic body is contacted；4, cross-coupling slot；5, it filters
Device input hole；6, filter delivery outlet.
Specific embodiment
In order to make those skilled in the art that the present invention may be better understood, with reference to the accompanying drawings and examples to this hair
Bright technical solution further illustrates.
- 2 pairs of embodiment of the present invention are described further referring to Fig.1.
A kind of double zero crossings coupling ceramic filters, which is characterized in that by 4 pieces of ceramic resonators 1 with totally-enclosed metal
Based on the integrated ceramic block changed, 4 pieces of ceramic resonators 1 are isolated by partition grooves 2, and are connected by connection ceramic body 3,
Form a ceramic block entirety, 4 pieces of ceramic resonators 1 of isolation form discrete resonant cavity, the frequency of the resonant cavity according to
Mai Kesiwei equation is determined, related to the ceramic dielectric constant of each ceramic resonator 1, the size of ceramic resonator 1,4
The frequency of resonant cavity composed by block ceramic resonator 1 determines that the connection is made pottery according to the index request careful design of filter
Porcelain body 3 provides coupling between each ceramic resonator 1, needs the intensity coupled to determine according to each ceramic resonator 1 described
It is the size of ceramic body 3, design has cross-coupling slot 4 between 2 pieces of ceramic resonators 1, and the cross-coupling slot 4 can
To realize the coupling of adjacent ceramic resonator 1, so as to adjust electromagnetic field phase, reach the function of double zero points.
Further, the size of the cross-coupling slot 4, adjustable stiffness of coupling, to adjust filter are adjusted
Out-of-band rejection it is horizontal.
By using above-mentioned technical proposal, the realization of double zero points is realized, cross-coupling by a cross-coupling slot
The coupling of adjacent ceramic resonator may be implemented in slot, so as to adjust electromagnetic field phase, reaches the function of double zero points；It adjusts and intersects
The size of slot, adjustable stiffness of coupling are coupled, so that the Out-of-band rejection for adjusting filter is horizontal.By contacting ceramic body,
It is integral to form a ceramics collection, makes filter that there is enough intensity and manufacturability, it is humorous that connection ceramic body also becomes ceramics
Microwave signal coupling path between vibration device, Careful design contact the structure size of ceramic body, and are guaranteed in production, can
The correct coupling between ceramic resonator is realized, to realize filter function.By cross-coupling slot, cross-coupling is realized, hand over
The size and number and distribution of fork coupling slot, it will influence cross-linked coefficient, pass through Careful design cross-coupling slot
Quantity, positions and dimensions, and be controlled during the preparation process, double zero crossings coupling ceramics filtering required for being formed
Device function.
The preferred embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, several deformations can also be made, improves and substitutes, these belong to this hair
Bright protection scope.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (2)
1. a kind of double zero crossings couple ceramic filter, which is characterized in that by 4 pieces of ceramic resonators (1) with totally-enclosed metal
Based on the integrated ceramic block changed, 4 pieces of ceramic resonators (1) are isolated by partition grooves (2), and pass through connection ceramic body
(3) it is connected, forms a ceramic block entirety, 4 pieces of ceramic resonators (1) of isolation forms discrete resonant cavity, the resonant cavity
Frequency determined according to Mai Kesiwei equation, ceramic dielectric constant, the ceramic resonator with each ceramic resonator (1)
(1) size is related, and the frequency of resonant cavity composed by 4 pieces of ceramic resonators (1) is accurately set according to the index request of filter
Meter determines that the connection ceramic body (3) provides coupling between each ceramic resonator (1), is needed according to each ceramic resonator (1)
The intensity to be coupled determines the size of connection ceramic body (3), and design has intersection coupling between 2 pieces of ceramic resonators (1)
It closes slot (4), the coupling of adjacent ceramic resonator (1) may be implemented in the cross-coupling slot (4), so as to adjust electromagnetic field phase
Position reaches the function of double zero points.
2. a kind of double zero crossings according to claim 1 couple ceramic filter, which is characterized in that adjust the intersection
The size of slot (4), adjustable stiffness of coupling are coupled, so that the Out-of-band rejection for adjusting filter is horizontal.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811083424.3A CN108987863A (en) | 2018-09-18 | 2018-09-18 | A kind of double zero crossings coupling ceramic filters |
| PCT/CN2018/111786 WO2020056844A1 (en) | 2018-09-18 | 2018-10-25 | Double-zero cross-coupling ceramic filter |
| KR1020197034047A KR20200034950A (en) | 2018-09-18 | 2018-10-25 | Double zero cross-linked ceramic filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811083424.3A CN108987863A (en) | 2018-09-18 | 2018-09-18 | A kind of double zero crossings coupling ceramic filters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108987863A true CN108987863A (en) | 2018-12-11 |
Family
ID=64546291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811083424.3A Pending CN108987863A (en) | 2018-09-18 | 2018-09-18 | A kind of double zero crossings coupling ceramic filters |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20200034950A (en) |
| CN (1) | CN108987863A (en) |
| WO (1) | WO2020056844A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109546270A (en) * | 2019-01-11 | 2019-03-29 | 苏州艾福电子通讯有限公司 | A kind of filter |
| CN109786910A (en) * | 2019-03-15 | 2019-05-21 | 苏州市协诚五金制品有限公司 | A kind of ceramic waveguide filter for realizing cross-coupling zero point |
| CN109841935A (en) * | 2019-03-15 | 2019-06-04 | 苏州市协诚五金制品有限公司 | A kind of multi-layered ceramic waveguide filter |
| CN109904572A (en) * | 2019-01-30 | 2019-06-18 | 苏州市协诚五金制品有限公司 | It is a kind of to realize the structure coupled between media ceramic resonator |
| CN110797613A (en) * | 2019-11-15 | 2020-02-14 | 中国电子科技集团公司第二十六研究所 | Dielectric waveguide filter with ten-order and six-notch |
| CN110828947A (en) * | 2019-11-15 | 2020-02-21 | 中国电子科技集团公司第二十六研究所 | Cross-coupling dielectric waveguide filter |
| CN113036363A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication equipment and filter |
| CN113614999A (en) * | 2019-01-08 | 2021-11-05 | 株式会社Kmw | Waveguide filter |
| CN115066806A (en) * | 2019-11-13 | 2022-09-16 | 株式会社Kmw | Dielectric ceramic filter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220127971A (en) * | 2021-03-12 | 2022-09-20 | 주식회사 케이엠더블유 | Ceramic Waveguide Filter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017088174A1 (en) * | 2015-11-27 | 2017-06-01 | 华为技术有限公司 | Dielectric filter, transceiver and base station |
| WO2018148905A1 (en) * | 2017-02-16 | 2018-08-23 | 华为技术有限公司 | Dielectric filter, transceiver device, and base station |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015070450A1 (en) * | 2013-11-18 | 2015-05-21 | 华为技术有限公司 | Resonator, filter, duplexer and multiplexer |
| KR101677950B1 (en) * | 2015-04-13 | 2016-11-21 | 주식회사 에이스테크놀로지 | Cavity filter using cross-coupling |
| KR101685099B1 (en) * | 2016-01-19 | 2016-12-12 | 주식회사 에이스테크놀로지 | Cavity Filter Including Ceramic Resonator |
-
2018
- 2018-09-18 CN CN201811083424.3A patent/CN108987863A/en active Pending
- 2018-10-25 WO PCT/CN2018/111786 patent/WO2020056844A1/en active Application Filing
- 2018-10-25 KR KR1020197034047A patent/KR20200034950A/en not_active Application Discontinuation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017088174A1 (en) * | 2015-11-27 | 2017-06-01 | 华为技术有限公司 | Dielectric filter, transceiver and base station |
| WO2018148905A1 (en) * | 2017-02-16 | 2018-08-23 | 华为技术有限公司 | Dielectric filter, transceiver device, and base station |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109461995B (en) * | 2018-12-27 | 2024-08-09 | 华为技术有限公司 | Waveguide filter adopting ceramic dielectric |
| 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 |
| WO2020135646A1 (en) * | 2018-12-27 | 2020-07-02 | 华为技术有限公司 | Waveguide filter using ceramic medium |
| CN113614999A (en) * | 2019-01-08 | 2021-11-05 | 株式会社Kmw | Waveguide filter |
| US11955680B2 (en) | 2019-01-08 | 2024-04-09 | Kmw Inc. | Waveguide filter |
| CN113614999B (en) * | 2019-01-08 | 2023-04-11 | 株式会社Kmw | Waveguide filter |
| CN109546270A (en) * | 2019-01-11 | 2019-03-29 | 苏州艾福电子通讯有限公司 | A kind of filter |
| CN109904572A (en) * | 2019-01-30 | 2019-06-18 | 苏州市协诚五金制品有限公司 | It is a kind of to realize the structure coupled between media ceramic resonator |
| CN109841935A (en) * | 2019-03-15 | 2019-06-04 | 苏州市协诚五金制品有限公司 | A kind of multi-layered ceramic waveguide filter |
| CN109786910A (en) * | 2019-03-15 | 2019-05-21 | 苏州市协诚五金制品有限公司 | A kind of ceramic waveguide filter for realizing cross-coupling zero point |
| CN115066806A (en) * | 2019-11-13 | 2022-09-16 | 株式会社Kmw | Dielectric ceramic filter |
| CN110797613B (en) * | 2019-11-15 | 2022-03-11 | 中国电子科技集团公司第二十六研究所 | Dielectric waveguide filter with ten-order and six-notch |
| CN110828947A (en) * | 2019-11-15 | 2020-02-21 | 中国电子科技集团公司第二十六研究所 | Cross-coupling dielectric waveguide filter |
| CN110797613A (en) * | 2019-11-15 | 2020-02-14 | 中国电子科技集团公司第二十六研究所 | Dielectric waveguide filter with ten-order and six-notch |
| CN113036363A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication equipment and filter |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20200034950A (en) | 2020-04-01 |
| WO2020056844A1 (en) | 2020-03-26 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20181211 |