CN210899085U - Stable broadband multi-channel down-conversion assembly - Google Patents
Stable broadband multi-channel down-conversion assembly Download PDFInfo
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- CN210899085U CN210899085U CN202020002665.7U CN202020002665U CN210899085U CN 210899085 U CN210899085 U CN 210899085U CN 202020002665 U CN202020002665 U CN 202020002665U CN 210899085 U CN210899085 U CN 210899085U
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- noise amplifier
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Abstract
The utility model relates to the technical field of communication network, in particular to a firm broadband multichannel down-conversion component, which comprises an upper cover plate and a shell, wherein the upper cover plate covers the shell, a plurality of connecting terminals are arranged at two sides of the shell, a low-noise amplifying part, a down-conversion channel part, a filter switch, an intermediate-frequency amplifying channel part, a frequency source and a power supply are arranged in the shell, the signal input end of the low-noise amplifying part is connected with the connecting terminals, the signal output end of the low-noise amplifying part is communicated with the signal input end of the filter switch, the signal output end of the intermediate-frequency amplifying channel part is connected with the connecting terminals, the power supply supplies power to the low-noise amplifying part, the down-conversion channel part, the filter switch, the intermediate-frequency amplifying channel part and the frequency source, the problem that the existing down-conversion component, time-sharing processing is needed, and down-conversion processing can not be carried out on a plurality of signals at the same time.
Description
Technical Field
The utility model relates to a communication network technical field, concretely relates to firm type broadband multichannel down conversion subassembly.
Background
The microwave receiving and transmitting system is a vital component in microwave communication, electronic countermeasure, radar, remote control and many measurement systems, and is used as an important core of the receiving and transmitting system, the microwave frequency conversion component plays a key role on the system performance, and the microwave frequency conversion component mainly has the functions of carrying out up-conversion or down-conversion on input signals and outputting signals with different frequencies.
Chinese patent publication No. CN209472604U discloses a 3000-plus 8400MHz microwave down-conversion module, which obtains higher in-band spectral purity through the collocation and combination of a built-in numerical control attenuator and a plurality of switch filters, but can only process signals of 1 channel in real time, and when a plurality of input signals exist in a middle frequency band, time-sharing processing is required, and down-conversion processing cannot be performed on a plurality of signals at the same time.
SUMMERY OF THE UTILITY MODEL
The utility model discloses can only real-time processing 1 passageway signal to current down conversion subassembly, when there are a plurality of input signal in the middle frequency band, need the timesharing to handle, can not carry out down the problem of frequency conversion processing to a plurality of signals simultaneously, provide a firm type broadband multichannel down conversion subassembly.
The technical scheme is that the stable broadband multichannel down-conversion assembly comprises an upper cover plate and a shell, wherein the upper cover plate covers the shell, a plurality of connecting terminals are arranged on two sides of the shell, a low-noise amplification component, a down-conversion channel component, a filter switch, an intermediate-frequency amplification channel component, a frequency source and a power supply are arranged in the shell, a signal input end of the low-noise amplification component is connected with the connecting terminals, a signal output end of the low-noise amplification component is communicated with a signal input end of the filter switch, a signal output end of the filter switch and a signal output end of the frequency source are communicated with a signal input end of the down-conversion channel component, a signal output end of the down-conversion channel component is communicated with a signal input end of the intermediate-frequency amplification channel component, a signal output end of the intermediate-frequency amplification channel, The filter switch, the intermediate frequency amplification channel part and the frequency source supply power.
Further, the low-noise amplifier part comprises a first low-noise amplifier cavity, a second low-noise amplifier cavity, a third low-noise amplifier cavity, a fourth low-noise amplifier cavity, a fifth low-noise amplifier cavity, a sixth low-noise amplifier cavity, a seventh low-noise amplifier cavity and an eighth low-noise amplifier cavity, the eight low-noise amplifier cavities are all provided with low-noise amplifiers, signal input ends of the eight low-noise amplifier cavities are located on the same side of the shell, the intermediate-frequency amplification channel part comprises a first intermediate-frequency amplification channel cavity and a second intermediate-frequency amplification channel cavity, intermediate-frequency amplification channels are arranged in the two intermediate-frequency amplification channel cavities, and signal input ends of the two intermediate-frequency amplification channel cavities are located on one side, far away from the low-noise amplifier cavity, of the shell.
Optionally, a metal cover plate is disposed in the housing, and the metal cover plate covers the filter switch and the down-conversion channel.
Optionally, the metal cover plate includes a first metal cover plate, a second metal cover plate, a third metal cover plate and a fourth metal cover plate, the first metal cover plate is located on one side of the first low noise amplifier cavity and the second low noise amplifier cavity away from the signal input end, the second metal cover plate is located on one side of the third low noise amplifier cavity and the fourth low noise amplifier cavity away from the signal input end, the third metal cover plate is located between the fifth low noise amplifier cavity and the sixth low noise amplifier cavity, and the fourth metal cover plate is located between the seventh low noise amplifier cavity and the eighth low noise amplifier cavity.
Furthermore, a metal base plate is arranged at the bottom of the shell, a DC interface is connected to the side wall of the shell, and the DC interface is connected with a frequency source.
Optionally, the surface of the upper cover plate is provided with heat dissipation fins, the heat dissipation fins are provided with grooves, and the heat dissipation fins are connected with the upper cover plate through connecting bolts penetrating through the grooves.
Furthermore, the connecting terminal is connected to a fixed seat, and the fixed seat is connected with the shell through a fixing bolt.
The utility model has the advantages that at least one of the following advantages is included;
1. the frequency mixing is carried out by internally arranging a plurality of low noise amplifiers, down-conversion channels and other components, so that simultaneous multi-channel down-conversion can be realized, and a fixed intermediate frequency can be output.
2. Set up metal covering plate above wave filter switch and down conversion passageway, can shield by external source signal or other interference, improve down conversion passageway and wave filter's precision.
2. The problem of current down conversion subassembly can only handle the signal of 1 passageway in real time, when having a plurality of input signals in the middle frequency band, need the timesharing to handle, can not carry out down conversion to a plurality of signals simultaneously and handle is solved.
Drawings
FIG. 1 is a schematic view of a housing structure;
FIG. 2 is a schematic diagram of a robust broadband multi-channel down-conversion module;
FIG. 3 is a schematic top view of a robust broadband multi-channel down-conversion module;
FIG. 4 is a block diagram of a robust broadband multi-channel down conversion module;
FIG. 5 is a schematic block diagram of a robust broadband multi-channel down conversion module;
labeled as: the amplifier comprises a shell 1, an upper cover plate 2, a metal base plate 3, a radiating fin 4, a fixing seat 5, a fixing bolt 6, a connecting terminal 7, a connecting bolt 8, a groove 9, a DC interface 10, a first metal cover plate 11, a second metal cover plate 12, a third metal cover plate 13, a fourth metal cover plate 14, a first low noise amplifier cavity 15, a second low noise amplifier cavity 16, a third low noise amplifier cavity 17, a fourth low noise amplifier cavity 18, a fifth low noise amplifier cavity 19, a sixth low noise amplifier cavity 20, a seventh low noise amplifier cavity 21, an eighth low noise amplifier cavity 22, a power supply 23, a frequency source 24, a first intermediate frequency amplification channel cavity 25 and a second intermediate frequency amplification channel cavity 27.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the scope of the invention.
As shown in fig. 1 and fig. 3, a robust broadband multichannel down conversion module includes an upper cover plate 2 and a housing 1, where the upper cover plate 2 covers the housing 1, and is characterized in that: the two sides of the shell 1 are provided with a plurality of connecting terminals 7, a low-noise amplification part, a down-conversion channel part, a filter switch, an intermediate-frequency amplification channel part, a frequency source 24 and a power supply 23 are arranged in the shell 1, a signal input end of the low-noise amplification part is connected with the connecting terminals 7, a signal output end of the low-noise amplification part is communicated with a signal input end of the filter switch, a signal output end of the filter switch and a signal output end of the frequency source 24 are both communicated with a signal input end of the down-conversion channel part, a signal output end of the down-conversion channel part is communicated with a signal input end of the intermediate-frequency amplification channel part, a signal output end of the intermediate-frequency amplification channel part is connected with the connecting terminals 7, and the power supply 23 supplies power. The low-noise amplification part comprises a first low-noise amplifier cavity 15, a second low-noise amplifier cavity 16, a third low-noise amplifier cavity 17, a fourth low-noise amplifier cavity 18, a fifth low-noise amplifier cavity 19, a sixth low-noise amplifier cavity 20, a seventh low-noise amplifier cavity 21 and an eighth low-noise amplifier cavity 22, the eight low-noise amplifier cavities are all provided with low-noise amplifiers, signal input ends of the eight low-noise amplifier cavities are positioned on the same side of the shell 1, the intermediate-frequency amplification channel part comprises a first intermediate-frequency amplification channel cavity 25 and a second intermediate-frequency amplification channel cavity 27, intermediate-frequency amplification channels are arranged in the two intermediate-frequency amplification channel cavities, and the signal input ends of the two intermediate-frequency amplification channel cavities are positioned on one side, far away from the low-noise amplifier cavity, of the shell 1.
The frequency mixing is carried out by internally arranging a plurality of low noise amplifiers, down-conversion channels and other components, so that simultaneous multi-channel down-conversion can be realized, and a fixed intermediate frequency can be output. The problem of current down conversion subassembly can only handle the signal of 1 passageway in real time, when having a plurality of input signals in the middle frequency band, need the timesharing to handle, can not carry out down conversion to a plurality of signals simultaneously and handle is solved.
Those skilled in the art will be able to refer to the present disclosure, or to the design based on fig. 4 and 5, in making a specific internal component configuration.
The input signal enters the low noise amplifiers in the cavities of the low noise amplifiers and is divided into 3 groups according to the input frequency bands of F1-F3, each group comprises 4 paths, and the total number of the paths is 12, and the function of the low noise amplifier is mainly to control the noise coefficient of the whole broadband multichannel down-conversion within an index. Except for F1 frequency band direct connection, frequency mixing is carried out on the F2-F3 frequency band through a down-conversion channel, down-conversion is completed, and fixed intermediate frequency is output.
The radio frequency switch composed of a plurality of filter switches completes the conversion of 12 paths of signals input by radio frequency and 4 paths of signals output by the radio frequency switch sharing the intermediate frequency channel, and the performance of a down-conversion channel is ensured.
The intermediate frequency amplification channel cavity containing the intermediate frequency amplifier performs gain compensation on the intermediate frequency signal after frequency mixing and radio frequency switching so as to meet the amplitude requirement of signal processing.
The phase-locked loop PLL composed of frequency sources and other components provides corresponding local oscillation signals for each frequency band mixer channel, and the accuracy of intermediate frequency is guaranteed.
In this embodiment, a metal cover plate is disposed in the housing 1, and the metal cover plate covers the filter switch and the down-conversion channel. The metal cover plate comprises a first metal cover plate 11, a second metal cover plate 12, a third metal cover plate 13 and a fourth metal cover plate 14, the first metal cover plate 11 is located on one side, far away from the signal input end, of a first low noise amplifier cavity 15 and a second low noise amplifier cavity 16, the second metal cover plate is located on one side, far away from the signal input end, of a third low noise amplifier cavity 17 and a fourth low noise amplifier cavity 18, the third metal cover plate 13 is located between a fifth low noise amplifier cavity 19 and a sixth low noise amplifier cavity 20, and the fourth metal cover plate 14 is located between a seventh low noise amplifier cavity 21 and an eighth low noise amplifier cavity 22.
The purpose that designs like this sets up metal covering plate above wave filter switch and down conversion passageway, can shield by external source signal or other interference, improves down conversion passageway and wave filter's precision.
In this embodiment, the bottom of the casing 1 is provided with a metal pad 3, the sidewall of the casing 1 is connected with a DC interface 10, and the DC interface 10 is connected with a frequency source 24.
The purpose of designing like this can improve the steadiness of whole equipment through setting up the metal backing plate, supplies power to the frequency source through the DC interface simultaneously.
In this embodiment, the surface of the upper cover plate 2 is provided with the heat dissipation fins 4, the heat dissipation fins 4 are provided with the grooves 9, and the heat dissipation fins 4 are connected with the upper cover plate 2 through the connection bolts 8 penetrating through the grooves 9.
In the use, through set up radiating fin at the upper cover plate can be with the comparatively rapid leading-in air of the heat that whole subassembly is inside to be produced, increase the area of contact with the air.
In this embodiment, the connection terminal 7 is connected to the fixing base 5, and the fixing base 5 is connected to the housing 1 through the fixing bolt 6.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a firm type broadband multichannel down conversion subassembly, includes upper cover plate (2) and casing (1), upper cover plate (2) lid is on casing (1), its characterized in that: the high-frequency-conversion-efficiency low-noise amplifier is characterized in that a plurality of connecting terminals (7) are arranged on two sides of the shell (1), a low-noise amplifying part, a down-conversion channel part, a filter switch, an intermediate-frequency amplifying channel part, a frequency source (24) and a power supply (23) are arranged in the shell (1), a signal input end of the low-noise amplifying part is connected with the connecting terminals (7), a signal output end of the low-noise amplifying part is communicated with a signal input end of the filter switch, a signal output end of the filter switch and a signal output end of the frequency source (24) are communicated with a signal input end of the down-conversion channel part, a signal output end of the down-conversion channel part is communicated with a signal input end of the intermediate-frequency amplifying channel part, a signal output end of the intermediate-frequency amplifying channel, The filter switch, the intermediate frequency amplification channel components and the frequency source (24) are powered.
2. A robust broadband multi-channel down conversion assembly according to claim 1, wherein: the low-noise amplifier part comprises a first low-noise amplifier cavity (15), a second low-noise amplifier cavity (16), a third low-noise amplifier cavity (17), a fourth low-noise amplifier cavity (18), a fifth low-noise amplifier cavity (19), a sixth low-noise amplifier cavity (20), a seventh low-noise amplifier cavity (21) and an eighth low-noise amplifier cavity (22), wherein the eight low-noise amplifier cavities are all provided with low-noise amplifiers, the signal input ends of the eight low-noise amplifier cavities are positioned on the same side of the shell (1), the intermediate frequency amplification channel component comprises a first intermediate frequency amplification channel cavity (25) and a second intermediate frequency amplification channel cavity (27), wherein intermediate frequency amplification channels are arranged in the two intermediate frequency amplification channel cavities, and the signal input ends of the two intermediate frequency amplification channel cavities are positioned on one side of the shell (1) far away from the low noise amplifier cavity.
3. A robust broadband multi-channel down conversion assembly according to claim 2, wherein: a metal cover plate is arranged in the shell (1) and covers the filter switch and the lower frequency conversion channel.
4. A robust broadband multi-channel down conversion assembly according to claim 3, wherein: the metal cover plate comprises a first metal cover plate (11), a second metal cover plate (12), a third metal cover plate (13) and a fourth metal cover plate (14), wherein the first metal cover plate (11) is located on one side, away from the signal input end, of a first low-noise amplifier cavity (15) and a second low-noise amplifier cavity (16), the second metal cover plate is located on one side, away from the signal input end, of a third low-noise amplifier cavity (17) and a fourth low-noise amplifier cavity (18), the third metal cover plate (13) is located between a fifth low-noise amplifier cavity (19) and a sixth low-noise amplifier cavity (20), and the fourth metal cover plate (14) is located between a seventh low-noise amplifier cavity (21) and an eighth low-noise amplifier cavity (22).
5. A robust broadband multi-channel down conversion assembly according to claim 1, wherein: the metal base plate (3) is arranged at the bottom of the shell (1), the DC interface (10) is connected to the side wall of the shell (1), and the DC interface (10) is connected with the frequency source (24).
6. A robust broadband multi-channel down conversion assembly according to claim 1, wherein: the surface of the upper cover plate (2) is provided with radiating fins (4), grooves (9) are formed in the radiating fins (4), and the radiating fins (4) are connected with the upper cover plate (2) through connecting bolts (8) penetrating through the grooves (9).
7. A robust broadband multi-channel down conversion assembly according to claim 1, wherein: the connecting terminal (7) is connected to the fixing seat (5), and the fixing seat (5) is connected with the shell (1) through the fixing bolt (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020002665.7U CN210899085U (en) | 2020-01-02 | 2020-01-02 | Stable broadband multi-channel down-conversion assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020002665.7U CN210899085U (en) | 2020-01-02 | 2020-01-02 | Stable broadband multi-channel down-conversion assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210899085U true CN210899085U (en) | 2020-06-30 |
Family
ID=71323458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020002665.7U Expired - Fee Related CN210899085U (en) | 2020-01-02 | 2020-01-02 | Stable broadband multi-channel down-conversion assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210899085U (en) |
-
2020
- 2020-01-02 CN CN202020002665.7U patent/CN210899085U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200630 Termination date: 20210102 |