CN213905567U - Spiral line cavity filter - Google Patents
Spiral line cavity filter Download PDFInfo
- Publication number
- CN213905567U CN213905567U CN202023286966.6U CN202023286966U CN213905567U CN 213905567 U CN213905567 U CN 213905567U CN 202023286966 U CN202023286966 U CN 202023286966U CN 213905567 U CN213905567 U CN 213905567U
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- China
- Prior art keywords
- ceramic dielectric
- metal
- dielectric resonator
- cavity
- metal cavity
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- 239000002184 metal Substances 0.000 claims abstract description 50
- 239000000919 ceramic Substances 0.000 claims abstract description 40
- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 238000005476 soldering Methods 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
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Abstract
The utility model provides a helix cavity filter, including metal cavity and ceramic dielectric resonator, be provided with a plurality of in the metal cavity ceramic dielectric resonator, metal cavity upper surface is provided with a plurality of tuning screws, metal cavity upper surface is provided with a plurality of coupling screws, and tuning screw and the crisscross setting of coupling screw, metal cavity left surface is provided with the input connector who is connected with ceramic dielectric resonator, metal cavity right surface is provided with the output connector who is connected with ceramic dielectric resonator; the utility model discloses simple structure, the simple operation, the assembly is simple.
Description
Technical Field
The utility model relates to a microwave communication technical field, especially a helix cavity filter.
Background
With the rapid development of communication technology, various cavity filters are widely applied in various communication systems. At the low band of UHF wave band, near 300~400MHz, because its frequency is low relatively, the wavelength is long, leads to the multi-purpose coil helix of this frequency channel cavity filter internal resonator, adds the polytetrafluoroethylene cylinder as the support again, leads to the structure complicated, and the assembly is loaded down with trivial details, and the helix structure is not particularly stable.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a spiral cavity filter, in which the internal resonator uses a high dielectric and low loss ceramic dielectric as a framework, and then a planar metal spiral line is plated on the cylindrical surface of the internal resonator, so as to achieve simple installation, low signal loss, and stable structure.
The utility model discloses a following method realizes: a spiral line cavity filter comprises a metal cavity and a ceramic dielectric resonator, and is characterized in that: the ceramic dielectric resonator is characterized in that a plurality of ceramic dielectric resonators are arranged in the metal cavity, a plurality of tuning screws are arranged on the upper surface of the metal cavity, a plurality of coupling screws are arranged on the upper surface of the metal cavity, the tuning screws and the coupling screws are arranged in a staggered mode, an input connector connected with the ceramic dielectric resonators is arranged on the left side face of the metal cavity, and an output connector connected with the ceramic dielectric resonators is arranged on the right side face of the metal cavity.
Furthermore, a planar metal spiral line is electroplated on the surface of the outer periphery of the ceramic dielectric resonator, a metal surface is plated on the bottom surface of the ceramic dielectric resonator, and the planar metal spiral line is in full contact with the metal surface.
Furthermore, the ceramic dielectric resonator at the leftmost end is connected with the inner conductor of the input connector through a first metal wire by soldering tin, and the ceramic dielectric resonator at the rightmost end is connected with the inner conductor of the output connector through a second metal wire by soldering tin.
The beneficial effects of the utility model reside in that: the ceramic dielectric resonator is added into the device, so that the ceramic dielectric with high dielectric and low loss is used as a framework, and the planar metal spiral line is plated on the cylindrical surface of the ceramic dielectric, thereby realizing the effect of simple and convenient installation; the utility model discloses simple structure, the simple operation, signal loss is little, stable in structure, but wide application in all kinds of UHF frequency channel mobile communication systems.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a front sectional view of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 to 3, the present invention provides an embodiment: the utility model provides a helix cavity filter, includes metal cavity 1 and ceramic dielectric resonator 2, be provided with a plurality ofly in the metal cavity 1 ceramic dielectric resonator 2, 1 upper surface of metal cavity is provided with a plurality of tuning screws 11, 1 upper surface of metal cavity is provided with a plurality of coupling screws 12, just tuning screws 11 with coupling screws 12 crisscross the setting for tuning screws 11 can carry out the fine setting effect to the central frequency of wave filter, and coupling screws 12 can carry out the fine setting effect to the degree of coupling of wave filter, 1 left surface of metal cavity be provided with the input connector 3 that ceramic dielectric resonator 2 is connected, 1 right side of metal cavity be provided with the output connector 4 that ceramic dielectric resonator 2 is connected. The ceramic dielectric resonator 2 is added to serve as a framework, so that the effects of convenience in installation and low signal loss can be achieved.
Referring to fig. 1 and fig. 2, in an embodiment of the present invention, a planar metal spiral line 21 is electroplated on the surface of the outer periphery of the ceramic dielectric resonator 2, a metal surface (not shown) is plated on the bottom surface of the ceramic dielectric resonator 2, and the planar metal spiral line 21 is in full contact with the metal surface. The function of the electroplated planar metal spiral line 21 can be used for communication, the number of turns, the line width, the diameter and the height of the ceramic medium of the electroplated planar metal spiral line 21 are determined by the central frequency of the filter, and the space between the resonators is determined by the relative bandwidth of the filter.
Referring to fig. 1 to 3, in an embodiment of the present invention, the leftmost ceramic dielectric resonator 2 is connected to the inner conductor of the input connector 3 through a first metal wire 31 by soldering, and the rightmost ceramic dielectric resonator 2 is connected to the inner conductor of the output connector 4 through a second metal wire 41 by soldering. One end of the first metal wire 31 and one end of the second metal wire 41 are connected with the inner conductor of the connector through soldering tin, the other end of the first metal wire is connected with the electroplated plane metal spiral line on the ceramic dielectric resonator 2 through soldering tin, and the positions are determined by the relative bandwidth of the filter.
The input connector and the output connector of the present invention are prior art, and those skilled in the art can clearly understand that they are not described in detail herein, and the input connector and the output connector can be N-type connectors, but are not limited thereto.
In a word, the utility model discloses a key feature utilizes the plane silvered wire of electroplating on cylindrical ceramic dielectric to replace hollow coil, plays the stable in structure effect, utilizes middle cylindrical ceramic dielectric (high Q, high dielectric constant) to reduce the volume of every syntonizer again to the volume of wave filter has been reduced, reduce cost.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (3)
1. A spiral line cavity filter comprises a metal cavity and a ceramic dielectric resonator, and is characterized in that: the ceramic dielectric resonator is characterized in that a plurality of ceramic dielectric resonators are arranged in the metal cavity, a plurality of tuning screws are arranged on the upper surface of the metal cavity, a plurality of coupling screws are arranged on the upper surface of the metal cavity, the tuning screws and the coupling screws are arranged in a staggered mode, an input connector connected with the ceramic dielectric resonators is arranged on the left side face of the metal cavity, and an output connector connected with the ceramic dielectric resonators is arranged on the right side face of the metal cavity.
2. A spiral cavity filter as claimed in claim 1, wherein: the ceramic dielectric resonator is characterized in that a plane metal spiral line is electroplated on the peripheral side surface of the ceramic dielectric resonator, a metal surface is plated on the bottom surface of the ceramic dielectric resonator, and the plane metal spiral line is in full contact with the metal surface.
3. A spiral cavity filter as claimed in claim 1, wherein: the ceramic dielectric resonator at the leftmost end is connected with the inner conductor of the input connector through a first metal wire by soldering tin, and the ceramic dielectric resonator at the rightmost end is connected with the inner conductor of the output connector through a second metal wire by soldering tin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023286966.6U CN213905567U (en) | 2020-12-30 | 2020-12-30 | Spiral line cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023286966.6U CN213905567U (en) | 2020-12-30 | 2020-12-30 | Spiral line cavity filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213905567U true CN213905567U (en) | 2021-08-06 |
Family
ID=77106731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023286966.6U Expired - Fee Related CN213905567U (en) | 2020-12-30 | 2020-12-30 | Spiral line cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213905567U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116799459A (en) * | 2023-08-29 | 2023-09-22 | 成都世源频控技术股份有限公司 | Variable pitch reducing type spiral filter |
-
2020
- 2020-12-30 CN CN202023286966.6U patent/CN213905567U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116799459A (en) * | 2023-08-29 | 2023-09-22 | 成都世源频控技术股份有限公司 | Variable pitch reducing type spiral filter |
| CN116799459B (en) * | 2023-08-29 | 2023-11-07 | 成都世源频控技术股份有限公司 | Variable pitch reducing type spiral filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210806 |