CN112072234A - High-power radio frequency filter - Google Patents
High-power radio frequency filter Download PDFInfo
- Publication number
- CN112072234A CN112072234A CN202010854255.XA CN202010854255A CN112072234A CN 112072234 A CN112072234 A CN 112072234A CN 202010854255 A CN202010854255 A CN 202010854255A CN 112072234 A CN112072234 A CN 112072234A
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- China
- Prior art keywords
- cavity
- heat dissipation
- film layer
- radio frequency
- heat
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/30—Auxiliary devices for compensation of, or protection against, temperature or moisture effects ; for improving power handling capability
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a high-power radio frequency filter, which comprises a cavity, a cover plate, a resonant column connected with the cover plate and arranged in the cavity, and a tuning screw rod arranged in the resonant column and penetrating out of the cover plate, wherein the tuning screw rod penetrates through the cover plate to be connected with an external circuit board, a heat dissipation device is arranged on the cavity, the heat dissipation device comprises a heat dissipation shell forming the cavity, the inner surface and the outer surface of the heat dissipation shell are respectively coated with a heat conduction film layer, and the heat conduction coefficient of the heat conduction film layer is not less than 230W/mK; the high-power radio frequency filter solves the problem of unstable work caused by poor heat dissipation effect of the radio frequency filter in the prior art.
Description
Technical Field
The invention belongs to the field of filters, and particularly relates to a high-power radio frequency filter.
Background
When the filter, especially the radio frequency filter, is applied to high-power electrical equipment, the radio frequency filter easily loses a stable working state due to a high-temperature environment, so that in the use process of the high-power electrical equipment, the radio frequency filter cannot effectively filter a frequency point of a specific frequency in a power line or frequencies except the frequency point, and a power signal of the specific frequency is obtained or eliminated.
Disclosure of Invention
The invention aims to provide a high-power radio frequency filter, which solves the problem of unstable work caused by poor heat dissipation effect of the radio frequency filter in the prior art.
The invention relates to a high-power radio frequency filter, which comprises a cavity, a cover plate, a resonance column connected with the cover plate and arranged in the cavity, and a tuning screw rod arranged in the resonance column and penetrating out of the cover plate, wherein the tuning screw rod penetrates through the cover plate to be connected with an external circuit board, a heat dissipation device is arranged on the cavity, the heat dissipation device comprises a heat dissipation shell forming the cavity, the inner surface and the outer surface of the heat dissipation shell are respectively coated with a heat conduction film layer, and the heat conduction coefficient of the heat conduction film layer is not less than 230W/mK.
Preferably, the heat conducting film layer is an oxide film layer, and the thickness of the oxide film layer is 2-10 μm.
Preferably, the oxide film layer is an aluminum oxide film layer or a titanium oxide film layer.
Preferably, the heat conducting film layer is formed by uniformly spraying on the inner surface and the outer surface of the heat dissipation shell by using a plasma spraying technology.
Preferably, the heat dissipation shell is a wave-shaped plate, and the side surface and the bottom surface of the cavity are both heat dissipation shells of the wave-shaped plate.
Preferably, the outer surface of the heat dissipation shell is uniformly provided with heat dissipation ribs.
Preferably, a sealing cavity is arranged outside the cavity, and the sealing cavity wraps the heat dissipation shell and forms an interlayer with the outer surface part of the heat dissipation shell.
Preferably, the interlayer is connected with an interlayer air inlet and an interlayer air outlet, and the interlayer air inlet and the interlayer air outlet are respectively provided with an interlayer air pump.
Preferably, heat abstractor is still including connecting the intracavity mechanism of taking a breath on the cavity, the intracavity mechanism of taking a breath includes cavity air inlet and the cavity gas outlet with cavity inner space intercommunication respectively, cavity air inlet and cavity gas outlet are provided with the cavity air pump respectively, be provided with on the cavity air inlet and admit air and purify the subassembly, it lets in the cavity to admit air after purifying the subassembly and evolving the air.
Preferably, the air intake purification assembly comprises a dust removal assembly and a dehumidification assembly, and the air intake purification assembly is arranged at an inlet position of the cavity air pump at the air inlet of the cavity.
The high-power radio frequency filter has the beneficial effects that:
1. the radiating shell forming the cavity is used for radiating, so that the cavity has radiating capacity, the radiating efficiency is improved, and the stable working state of the radio frequency filter in a high-temperature environment is ensured.
2. The heat conduction film layer is utilized to increase the heat conduction and dissipation effect and capacity of the cavity, the high heat dissipation efficiency is improved, and the stable working state of the radio frequency filter in a high-temperature environment is ensured.
3. Utilize the air pump to realize taking a breath and circulation of air, realize passive heat dissipation, improve the heat-sinking capability.
Drawings
Figure 1 is a schematic diagram of a high power rf filter according to the present invention,
fig. 2 is another schematic structural diagram of a high-power rf filter according to the technical solution of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
As shown in fig. 1, the high-power rf filter according to the technical solution of the present invention includes a cavity 1, a cover plate 4, a resonant column 2 connected to the cover plate 4 and disposed in the cavity 1, and a tuning screw 3 disposed in the resonant column 2 and penetrating through the cover plate 4, wherein the tuning screw 3 penetrates through the cover plate 4 and is connected to an external circuit board. The cavity 1 is provided with a heat dissipation device, the heat dissipation device comprises a heat dissipation shell 5 forming the cavity 1, the inner surface and the outer surface of the heat dissipation shell 5 are both coated with a heat conduction film layer, and the heat conduction coefficient of the heat conduction film layer is not less than 230W/mK.
In the technical scheme, the heat dissipation shell forming the cavity is used for dissipating heat, so that the cavity has the heat dissipation capacity, the heat dissipation efficiency is improved, and the stable working state of the radio frequency filter in a high-temperature environment is ensured. The heat conduction film layer is utilized to increase the heat conduction and dissipation effect and capacity of the cavity, the high heat dissipation efficiency is improved, and the stable working state of the radio frequency filter in a high-temperature environment is ensured.
In the technical scheme of the invention, the heat conducting film layer is an oxide film layer, and the thickness of the oxide film layer is 2-10 μm. The oxide film layer is an aluminum oxide film layer or a titanium oxide film layer. The heat conducting film layer is formed by uniformly spraying the inner surface and the outer surface of the heat radiating shell by utilizing a plasma spraying technology. The oxide film layer has stable performance, is anticorrosive and moistureproof, has heat conductivity coefficient proportional to the heat dissipation performance, and improves the heat dissipation performance of the cavity of the filter.
As shown in fig. 1, the heat dissipation housing 5 is a wave-shaped plate, and the side surface and the bottom surface of the cavity are both heat dissipation housings with wave-shaped plates. The outer surface of the heat dissipation shell 5 is uniformly provided with heat dissipation ribs 6. The arrangement of the heat dissipation ribs increases heat dissipation performance.
As shown in fig. 2, the arrangement of the heat dissipation ribs outside the heat dissipation housing 5 is removed, and a sealing cavity 11 is arranged outside the cavity 1, and the sealing cavity 11 wraps the heat dissipation housing 5 and forms an interlayer 12 with the outer surface member of the heat dissipation housing 5. The interlayer 12 is connected with an interlayer air inlet 9 and an interlayer air outlet 10, and the interlayer air inlet 9 and the interlayer air outlet 10 are respectively provided with an interlayer air pump. The air in the interlayer 12 is forcibly pumped by the interlayer air pump, the heat is actively radiated, and the heat dissipation efficiency is improved.
As shown in fig. 1 or fig. 2, the heat dissipation device further includes an inner cavity ventilation mechanism connected to the cavity 1, the inner cavity ventilation mechanism includes a cavity air inlet 7 and a cavity air outlet 8 respectively communicated with the inner space of the cavity 1, and the cavity air inlet 7 and the cavity air outlet 8 are respectively provided with a cavity air pump. Be provided with on the cavity air inlet 7 and admit air and purify the subassembly, admit air and purify the subassembly and let in cavity 1 after evolving the air. The air inlet purification component comprises a dust removal component and a dehumidification component, and the air inlet purification component is arranged at the inlet position of the cavity air pump at the air inlet of the cavity.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.
Claims (10)
1. The high-power radio frequency filter is characterized by comprising a cavity, a cover plate, a resonant column connected with the cover plate and arranged in the cavity, and a tuning screw rod arranged in the resonant column and penetrating out of the resonant column through the cover plate, wherein the tuning screw rod penetrates through the cover plate to be connected with an external circuit board, a heat dissipation device is arranged on the cavity and comprises a heat dissipation shell forming the cavity, the inner surface and the outer surface of the heat dissipation shell are respectively coated with a heat conduction film layer, and the heat conduction coefficient of the heat conduction film layer is not less than 230W/mK.
2. The high power rf filter according to claim 1, wherein the heat conducting film layer is an oxide film layer, and the thickness of the oxide film layer is 2 μm-10 μm.
3. The high power rf filter according to claim 2, wherein the oxide film layer is an aluminum oxide film layer or a titanium oxide film layer.
4. The high power rf filter according to claim 1, wherein the heat conducting film layer is formed by uniformly spraying on the inner and outer surfaces of the heat dissipating housing by using a plasma spraying technique.
5. The high power rf filter according to claim 1, wherein the heat dissipation housing is a corrugated plate, and the cavity side surface and the cavity bottom surface are corrugated plates.
6. The high power rf filter according to claim 5, wherein the heat dissipating ribs are uniformly distributed on the outer surface of the heat dissipating housing.
7. The high-power radio frequency filter according to claim 5, wherein a sealing cavity is arranged outside the cavity, and the sealing cavity wraps the heat dissipation shell and forms a sandwich with an outer surface part of the heat dissipation shell.
8. The high power radio frequency filter according to claim 7, wherein the interlayer is connected with an interlayer air inlet and an interlayer air outlet, and an interlayer air pump is respectively arranged on the interlayer air inlet and the interlayer air outlet.
9. The high-power radio frequency filter according to claim 1, wherein the heat sink further comprises an inner cavity ventilation mechanism connected to the cavity, the inner cavity ventilation mechanism comprises a cavity air inlet and a cavity air outlet respectively communicated with the inner space of the cavity, the cavity air inlet and the cavity air outlet are respectively provided with a cavity air pump, the cavity air inlet is provided with an air inlet purification assembly, and the air inlet purification assembly evolves air and then introduces the air into the cavity.
10. The high-power radio frequency filter according to claim 9, wherein the intake air purification assembly comprises a dust removal assembly and a dehumidification assembly, and the intake air purification assembly is arranged at an inlet position of the cavity air pump at the cavity air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010854255.XA CN112072234A (en) | 2020-08-24 | 2020-08-24 | High-power radio frequency filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010854255.XA CN112072234A (en) | 2020-08-24 | 2020-08-24 | High-power radio frequency filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112072234A true CN112072234A (en) | 2020-12-11 |
Family
ID=73659193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010854255.XA Pending CN112072234A (en) | 2020-08-24 | 2020-08-24 | High-power radio frequency filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN112072234A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120235770A1 (en) * | 2011-03-16 | 2012-09-20 | Radio Frequency Systems, Inc. | Cavity filter thermal dissipation |
| CN206806475U (en) * | 2017-04-21 | 2017-12-26 | 深圳市大富科技股份有限公司 | A kind of wave filter, communication equipment, Remote Radio Unit and communication base station |
| CN207283964U (en) * | 2017-06-15 | 2018-04-27 | 合肥东光电子技术有限公司 | A kind of wave filter with radiating dustproof performance |
| CN207969277U (en) * | 2018-04-03 | 2018-10-12 | 成都迈林特科技有限公司 | A kind of filter with heat sinking function |
| CN109149035A (en) * | 2017-06-15 | 2019-01-04 | Ace技术株式会社 | The cavity filter with mixing nut bolt is reduced using PIMD |
| CN209658371U (en) * | 2019-06-05 | 2019-11-19 | 深圳金泰格机电股份有限公司 | A kind of cavity body filter |
-
2020
- 2020-08-24 CN CN202010854255.XA patent/CN112072234A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120235770A1 (en) * | 2011-03-16 | 2012-09-20 | Radio Frequency Systems, Inc. | Cavity filter thermal dissipation |
| CN103620866A (en) * | 2011-03-16 | 2014-03-05 | 阿尔卡特朗讯 | Cavity filter thermal dissipation |
| CN206806475U (en) * | 2017-04-21 | 2017-12-26 | 深圳市大富科技股份有限公司 | A kind of wave filter, communication equipment, Remote Radio Unit and communication base station |
| CN207283964U (en) * | 2017-06-15 | 2018-04-27 | 合肥东光电子技术有限公司 | A kind of wave filter with radiating dustproof performance |
| CN109149035A (en) * | 2017-06-15 | 2019-01-04 | Ace技术株式会社 | The cavity filter with mixing nut bolt is reduced using PIMD |
| CN207969277U (en) * | 2018-04-03 | 2018-10-12 | 成都迈林特科技有限公司 | A kind of filter with heat sinking function |
| CN209658371U (en) * | 2019-06-05 | 2019-11-19 | 深圳金泰格机电股份有限公司 | A kind of cavity body filter |
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Application publication date: 20201211 |