CN214959464U - Anti-interference air-cooled very low frequency tuned filter - Google Patents
Anti-interference air-cooled very low frequency tuned filter Download PDFInfo
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- CN214959464U CN214959464U CN202121420941.2U CN202121420941U CN214959464U CN 214959464 U CN214959464 U CN 214959464U CN 202121420941 U CN202121420941 U CN 202121420941U CN 214959464 U CN214959464 U CN 214959464U
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Abstract
The utility model provides an anti-interference air-cooled very low frequency tuning filter, including the wave filter main part, the wave filter main part is equipped with input interface, output interface, the power supply interface, heat dissipation wind channel and fan, input interface and power supply interface establish the one end in the wave filter main part, output interface establishes the other end in the wave filter main part, heat dissipation wind channel establishes the one side in the wave filter main part, the external opposite side in the wave filter main part of fan, be equipped with filter capacitance and magnetic ring in the wave filter main part, be equipped with the apron in the wave filter main part, the wave filter main part is connected with filter circuit, input interface is connected with filter circuit's input, output interface is connected with filter circuit's output. The utility model discloses simple structure has improved the heat dispersion of wave filter main part through apron, fan and radiating duct, and has characteristics such as small, insertion loss and return loss are little, stop band suppression degree is high, interference immunity height.
Description
Technical Field
The utility model relates to a power amplifier system wave detector technical field, concretely relates to anti-interference air-cooled very low frequency tuning filter.
Background
The working principle of the tuned filter, especially the complexity of the resonant frequency debugging in China, and the control of harmonic suppression still remain blank in China. With the rapid development of wireless communication systems, including ship communication, satellite communication, relay communication, microwave communication, radar systems, remote telemetry and other technologies, the market demand of low-frequency tuned filters is becoming strong and the production requirements are also increasing.
In the prior art, the frequency bands of wireless communication are more and more, the power is more and more, the use environment is more and more severe, and the anti-interference performance and the heat dissipation performance of the existing filter structure cannot meet the actual requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects of the prior art and providing an anti-interference air-cooled very low frequency tuned filter.
The utility model provides a following technical scheme:
the utility model provides an anti-interference air-cooled very low frequency tuning filter, includes the wave filter main part, the wave filter main part is equipped with input interface, output interface, power supply interface, heat dissipation wind channel and fan, the input interface with the power supply interface is established the one end of wave filter main part, the output interface is established the other end of wave filter main part, heat dissipation wind channel is established one side of wave filter main part, the fan is external in the opposite side of wave filter main part, be equipped with filter capacitor and magnetic ring in the wave filter main part, be equipped with the apron in the wave filter main part, the wave filter main part is connected with filter circuit, the input interface with filter circuit's input is connected, the output interface with filter circuit's output is connected.
Preferably, one end of the filter main body, which is provided with the input interface, is further provided with an alternative power supply interface, and the alternative power supply interface is arranged beside the power supply interface.
Preferably, the input interface, the output interface and the filter circuit are connected by an N-type high-isolation connector, and the N-type high-isolation connector is used for avoiding interference of external signals.
Preferably, the filter body is made of a shielding material for preventing an electronic component inside the filter body from receiving external signal interference.
Preferably, the inductance of the magnetic ring and the capacitance of the filter capacitor are both self-adjusted according to requirements, and the filter capacitor is a mica capacitor.
Preferably, the filter main body is internally provided with a partition plate, the heat dissipation air duct is arranged between the filter main body and the partition plate, the section of the heat dissipation air duct is of an L-shaped structure, and the partition plate is provided with a ventilation hole.
Preferably, the cover plate is provided with uniformly distributed heat dissipation holes, and the heat dissipation holes are located above a space enclosed by the partition plate and the side wall of the edge of the filter main body.
Preferably, the two ends of the filter main body are symmetrically provided with notches, and the bottom plate of the filter main body is provided with fixing holes at the notches.
The utility model has the advantages that:
the radiating performance of the filter main body is improved through the cover plate, the fan and the L-shaped radiating air channel, radiating holes formed in the cover plate are uniformly distributed and dense, so that the size of the filter main body is not increased while the air cooling radiating of the filter main body is realized, and the filter has the advantage of small size;
the filter also has the characteristics of small insertion loss and return loss, high stop band rejection degree and high anti-interference performance, and meanwhile, the filter is simple in structure, greatly reduces required components, reduces system cost, prolongs the service life of the product, and expands the application occasions of the product.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the present invention;
labeled as: 1-input interface, 2-output interface, 3-power supply interface, 4-radiating air duct, 5-filter main body, 6-alternative power supply interface, 7-fan and 8-cover plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1 and 2, an anti-interference air-cooled very low frequency tuned filter includes a filter main body 5, the filter main body 5 is provided with an input interface 1, an output interface 2, a power supply interface 3, a heat dissipation air duct 4 and a fan 7, the input interface 1 and the power supply interface 3 are disposed at one end of the filter main body 5, an alternative power supply interface 6 is disposed beside the power supply interface 3, the output interface 2 is disposed at the other end of the filter main body 5, the heat dissipation air duct 4 is disposed at one side of the filter main body 5, the fan 7 is externally connected to the other side of the filter main body 5, a filter capacitor and a magnetic ring are disposed in the filter main body 5, a cover plate 8 is disposed on the filter main body 5, the filter main body 5 is connected to a filter circuit, the input interface 1 is connected to an input terminal of the filter circuit, and the output interface 2 is connected to an output terminal of the filter circuit.
Be equipped with the baffle in the wave filter main part 5, heat dissipation wind channel 4 is established between wave filter main part 5 and baffle, and heat dissipation wind channel 4 section is L type structure, and the baffle is equipped with the ventilation hole. The cover plate 8 is provided with uniformly distributed heat dissipation holes, and the heat dissipation holes are located above a space defined by the partition plate and the side wall of the 5 tomb end of the filter main body.
The working principle is as follows:
the operator places the filter main body 5 at the installation place, and fixes the filter main body 5 from the fixing hole of the filter main body 5 using the fixing bolt. The input interface 1 and the output interface 2 are connected to the input terminal and the output terminal of the filter circuit, respectively, using electric wires using an N-type high-isolation connector as a port.
The fan 7 adopting 12V and 0.14A is powered, the fan 7 is started and sends air outside the filter main body 5 into the filter main body 5 through the L-shaped radiating air duct 4, the sent air takes away heat generated by the magnetic ring and the filter capacitor, and the heat is discharged from the radiating holes of the cover plate 8. Because the radiating holes of the cover plate 8 are densely and uniformly distributed, the radiating capacity is improved by 30 percent compared with the prior art, and the temperature reduction amplitude of the magnetic ring can reach 36 degrees.
The N-type high-isolation connector and the filter body made of the shielding material mainly reduce insertion loss and return loss and improve stop band rejection degree and anti-interference performance.
When the filter operates, the magnetic ring and the filter capacitor can respectively adjust the inductance and capacitance according to actual requirements.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides an anti-interference air-cooled very low frequency tuning filter, its characterized in that includes the wave filter main part, the wave filter main part is equipped with input interface, output interface, power supply interface, heat dissipation wind channel and fan, the input interface with the power supply interface is established the one end of wave filter main part, the output interface is established the other end of wave filter main part, heat dissipation wind channel establishes one side of wave filter main part, the fan is external the opposite side of wave filter main part, be equipped with filter capacitor and magnetic ring in the wave filter main part, be equipped with the apron in the wave filter main part, the wave filter main part is connected with filter circuit, the input interface with filter circuit's input is connected, the output interface with filter circuit's output is connected.
2. An antijam air-cooled very low frequency tuned filter according to claim 1, characterized in that the end of said filter body where said input interface is located is further provided with an alternative power supply interface, said alternative power supply interface being located next to said power supply interface.
3. The antijam air-cooled very low frequency tuned filter of claim 1, wherein said input interface and said output interface are connected to said filter circuit by N-type high isolation connectors for avoiding interference of external signals.
4. An antijam air-cooled very low frequency tuned filter according to claim 1, wherein said filter body is made of a shielding material for preventing the electronic components inside said filter body from receiving external signals.
5. An antijam air-cooled very low frequency tuned filter as claimed in claim 1, wherein the inductance of said magnetic loop and the capacitance of said filter capacitor are self-adjusting as required, and said filter capacitor is mica capacitor.
6. An antijam air-cooled very low frequency tuned filter according to claim 1, wherein said filter body has a partition plate, said heat dissipation air duct is disposed between said filter body and said partition plate, said heat dissipation air duct has an L-shaped cross-section, and said partition plate has ventilation holes.
7. An anti-interference air-cooled very low frequency tunable filter according to claim 1, wherein said cover plate has uniformly distributed heat dissipation holes, said heat dissipation holes are located above a space defined by said partition plate and a sidewall of said main body edge of said filter.
8. An antijam air-cooled very low frequency tuned filter according to claim 1, wherein said filter body is symmetrically provided with notches at both ends thereof, and a bottom plate of said filter body is provided with fixing holes at said notches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121420941.2U CN214959464U (en) | 2021-06-24 | 2021-06-24 | Anti-interference air-cooled very low frequency tuned filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121420941.2U CN214959464U (en) | 2021-06-24 | 2021-06-24 | Anti-interference air-cooled very low frequency tuned filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214959464U true CN214959464U (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121420941.2U Active CN214959464U (en) | 2021-06-24 | 2021-06-24 | Anti-interference air-cooled very low frequency tuned filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214959464U (en) |
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2021
- 2021-06-24 CN CN202121420941.2U patent/CN214959464U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An anti-interference air-cooled VLF tuned filter Effective date of registration: 20220725 Granted publication date: 20211130 Pledgee: Nanjing Bank Co.,Ltd. Nanjing Financial City Branch Pledgor: NANJING HANRUI MICROWAVE COMMUNICATION Co.,Ltd. Registration number: Y2022980011133 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |