CN214851136U - Miniaturized multichannel broadband frequency converter - Google Patents
Miniaturized multichannel broadband frequency converter Download PDFInfo
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- CN214851136U CN214851136U CN202121581636.1U CN202121581636U CN214851136U CN 214851136 U CN214851136 U CN 214851136U CN 202121581636 U CN202121581636 U CN 202121581636U CN 214851136 U CN214851136 U CN 214851136U
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Abstract
The utility model relates to a miniaturized multichannel broadband converter. The utility model comprises a plurality of frequency converter modules with the same structure, wherein each frequency converter module comprises a first numerical control attenuator, a first amplifier, a band-pass chip filter bank, a first frequency mixer, a micro-strip filter, a second amplifier, a second frequency mixer, a low-frequency filter, a third amplifier, a second numerical control attenuator and a fourth amplifier which are connected in sequence; wherein the other input signal of the first mixer is a first high-frequency local oscillator signal, and the other input signal of the second mixer is a second high-frequency local oscillator signal. The utility model discloses a miniaturized filter bank has realized the design purpose of miniaturized multichannel broadband converter, has satisfied the miniaturized demand of airborne equipment and missile-borne equipment.
Description
Technical Field
The utility model relates to a miniaturized multichannel broadband converter.
Background
Due to the rapid development of satellite communication, the integration level of a radio frequency front-end circuit is higher and higher, the functions are more and more, a frequency converter of a single module cannot meet the development requirement of the communication industry, sometimes, a system needs multiple frequency conversion channels to meet the requirement, and thus multiple frequency conversion channels need to be integrated in a case. However, the conventional enclosure device is not suitable for devices requiring further miniaturization and integration, such as an on-board system and a missile-borne system.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve, to above-mentioned problem, provide a miniaturized multichannel broadband converter.
The utility model adopts the technical proposal that: a miniaturized multichannel broadband frequency converter comprises a plurality of frequency converter modules with the same structure, as shown in figure 1, each frequency converter module comprises a first numerical control attenuator, a first amplifier, a band-pass chip filter bank, a first frequency mixer, a first high-frequency local oscillator, a microstrip filter, a second amplifier, a second frequency mixer, a second high-frequency local oscillator, a low-frequency filter, a third amplifier, a second numerical control attenuator and a fourth amplifier; an externally input broadband radio frequency signal is connected with an input end of a first numerical control attenuator, an output end of the first numerical control attenuator is connected with an input end of a first amplifier, an output of the first amplifier is connected with one input end of a first frequency mixer after passing through a band-pass chip filter bank, the other input end of the first frequency mixer is connected with a first high-frequency local oscillation signal, an output of the first frequency mixer is connected with one input end of a second frequency mixer after passing through a second amplifier, and the other input end of the second frequency mixer is connected with a second high-frequency local oscillation signal; the output end of the second mixer is connected with the input end of a third amplifier after passing through a low-frequency filter, the output end of the third amplifier is connected with the input end of a second numerical control attenuator, the output end of the second numerical control attenuator is connected with the input end of a fourth amplifier, and the output end of the fourth amplifier is used as the output end of the frequency converter to output a middle-level signal.
The utility model has the advantages that: the utility model discloses a miniaturized filter bank has realized the design purpose of miniaturized multichannel broadband converter, has satisfied the miniaturized demand of airborne equipment and missile-borne equipment.
Drawings
Fig. 1 is a schematic diagram of the circuit logic structure of the present invention.
FIG. 2 is the schematic diagram of the band-pass chip filter bank structure of the present invention
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the single down converter in the solution of the present invention is composed of a band-pass chip filter bank, a microstrip filter, a low-frequency filter, an amplifier, a mixer, and a digital controlled attenuator. A single frequency converter is made into a module with a standard small volume, and a plurality of modules are overlapped and fixed into a whole to achieve the aim of realizing a multi-channel frequency converter.
As shown in fig. 2, the utility model discloses band-pass chip filter group in the scheme comprises switch 1, band-pass chip filter group, switch 2, uses different band-pass chip filters through the switching, suppresses outband interference signal and image signal.
The utility model discloses a working process is: the input broadband radio frequency signal passes through the numerical control attenuator 1, and the numerical control attenuator 1 can adjust the power of the input high-power signal so that the frequency converter works in an optimal linear region; the amplifier 1 can meet the gain requirement of the frequency converter and can also ensure the low noise requirement of the frequency converter; the band-pass chip filter bank adopts a miniaturized and high-integration bare chip device, so that the space occupied by the traditional cavity filter bank is greatly saved, and the band-pass chip filter bank has the functions of preventing out-of-band interference signals and inhibiting image frequency signals; the mixer 1 outputs a first intermediate frequency signal after mixing the radio frequency signal with a high frequency local oscillator 1, wherein the high frequency local oscillator is adopted for reducing the number of the output first intermediate frequency signals and enabling the frequency of the first intermediate frequency signal to be higher, so that the first intermediate frequency signal is conveniently filtered by using a microstrip filter, and the space occupied by the first intermediate frequency signal is reduced; the microstrip filter is used for filtering the first intermediate frequency signal; the amplifier 2 compensates the gain of the whole frequency conversion link; the mixer 2 adopts a high-frequency local oscillator 2 and a first intermediate-frequency signal to carry out frequency mixing and then outputs an intermediate-frequency signal which is finally needed; the low-frequency filter can filter out the mixed stray signals; the amplifier 3 and the amplifier 4 can amplify the power of the intermediate frequency signal; the digitally controlled attenuator 2 implements a gain control function.
Claims (1)
1. A miniaturized multichannel broadband frequency converter is characterized by comprising a plurality of frequency converter modules with the same structure, wherein each frequency converter module comprises a first numerical control attenuator, a first amplifier, a band-pass chip filter bank, a first frequency mixer, a first high-frequency local oscillator, a microstrip filter, a second amplifier, a second frequency mixer, a second high-frequency local oscillator, a low-frequency filter, a third amplifier, a second numerical control attenuator and a fourth amplifier; an externally input broadband radio frequency signal is connected with an input end of a first numerical control attenuator, an output end of the first numerical control attenuator is connected with an input end of a first amplifier, an output of the first amplifier is connected with one input end of a first frequency mixer after passing through a band-pass chip filter bank, the other input end of the first frequency mixer is connected with a first high-frequency local oscillation signal, an output of the first frequency mixer is connected with one input end of a second frequency mixer after passing through a second amplifier, and the other input end of the second frequency mixer is connected with a second high-frequency local oscillation signal; the output end of the second mixer is connected with the input end of a third amplifier after passing through a low-frequency filter, the output end of the third amplifier is connected with the input end of a second numerical control attenuator, the output end of the second numerical control attenuator is connected with the input end of a fourth amplifier, and the output end of the fourth amplifier is used as the output end of the frequency converter to output a middle-level signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121581636.1U CN214851136U (en) | 2021-07-12 | 2021-07-12 | Miniaturized multichannel broadband frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121581636.1U CN214851136U (en) | 2021-07-12 | 2021-07-12 | Miniaturized multichannel broadband frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214851136U true CN214851136U (en) | 2021-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121581636.1U Active CN214851136U (en) | 2021-07-12 | 2021-07-12 | Miniaturized multichannel broadband frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214851136U (en) |
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2021
- 2021-07-12 CN CN202121581636.1U patent/CN214851136U/en active Active
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