CN114785358A - Miniaturized L-to-C waveband multi-channel self-adaptive frequency converter - Google Patents
Miniaturized L-to-C waveband multi-channel self-adaptive frequency converter Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0096—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges where a full band is frequency converted into another full band
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/693—Arrangements for optimizing the preamplifier in the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
- H04B2001/1072—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal by tuning the receiver frequency
Abstract
The invention relates to the technical field of electronic communication, and discloses a miniaturized L-to-C waveband multichannel self-adaptive frequency converter which comprises a receiving front end component, an optical fiber delay module, a frequency measurement component, a frequency synthesis component, an up-conversion component, a down-conversion component and a control unit, wherein the receiving front end component is connected with the frequency synthesis component through a cable; the receiving front end component outputs a radio frequency signal, the radio frequency signal is accessed into the up-conversion component through the optical fiber delay module, the receiving front end component couples the output radio frequency signal and accesses the frequency measurement module to carry out frequency measurement, and meanwhile, the frequency measurement module provides a frequency measurement result and outputs a trigger pulse; the input end of the up-conversion component is connected with the intermediate frequency signal A, and the output end of the up-conversion component outputs L-band to C-band radio frequency signals A; the input end of the down-conversion component is connected with the L-band radio-frequency signal B to the C-band radio-frequency signal B, and the output end of the down-conversion component outputs an intermediate-frequency signal B; and the variable-frequency transmission of L-band to C-band signals is realized. The invention is used for realizing variable frequency transmission among different frequency signals.
Description
Technical Field
The invention relates to the technical field of electronic communication, in particular to a miniaturized L-to-C-band multi-channel self-adaptive frequency converter which is used for realizing variable frequency transmission among different frequency signals.
Background
According to the IEEE 521-2002 standard, the L waveband is a radio wave waveband with the frequency of 1-2 GHz, belongs to millimeter waves, and can be used for DAB, satellite navigation systems and the like; the S wave band is an electromagnetic wave frequency band with the frequency range of 2-4 GHz, is usually applied to relays, satellite communication, radars and the like, and is also applied to the currently widely used Bluetooth, ZIGBEE, wireless router, wireless mouse and the like; the C-band is a band of frequencies from 4.0 to 8.0GHz, which is used as a band of downlink transmission signals of communication satellites, and is first adopted and has been widely used in satellite television broadcasting and various small satellite ground station applications.
The vehicle-mounted system is generally a vehicle-mounted navigation system, mainly comprises a host, a display screen, an operation keyboard and an antenna, realizes the digital intelligent navigation of field reconnaissance and travel, and has accurate map and geographic information and clear traveling routes. However, because the frequency of the signals received by the present vehicle-mounted system is different, and the existing frequency converters have fewer channels, narrow frequency range and poor continuous capability, the transmission efficiency between the signals with different frequencies in the vehicle-mounted system is low.
Therefore, in order to solve the problems of fewer channels, narrow frequency range and poor continuous capability of the existing frequency converter, the invention provides a miniaturized L-to-C-band multichannel adaptive frequency converter for realizing variable frequency transmission between different frequency signals.
Disclosure of Invention
The invention aims to provide a miniaturized L-to-C-band multichannel adaptive frequency converter which is used for realizing variable frequency transmission between different frequency signals.
The invention is realized by the following technical scheme: a miniaturized L-to-C waveband multichannel self-adaptive frequency converter comprises a receiving front end component, an optical fiber delay module, a frequency measurement component, a frequency synthesis component, an up-conversion component, a down-conversion component and a control unit;
the receiving front end component is respectively connected with the optical fiber delay module and the frequency measuring component, the frequency synthesizing component is respectively connected with the up-conversion component and the down-conversion component, and the control unit is respectively connected with the frequency synthesizing component, the frequency measuring component, the up-conversion component and the down-conversion component;
the receiving front end component outputs a radio frequency signal, the radio frequency signal is accessed to the up-conversion component through the optical fiber delay module, the receiving front end component couples the output radio frequency signal and accesses the frequency measurement module to perform frequency measurement, and meanwhile, the frequency measurement module provides a frequency measurement result and outputs a trigger pulse;
the input end of the up-conversion component inputs an intermediate frequency signal A, and the output end of the up-conversion component outputs an L-band radio frequency signal A to a C-band radio frequency signal A; the input end of the down-conversion component is accessed to the L-to-C-band radio frequency signal B, and the output end of the down-conversion component outputs an intermediate frequency signal B; and the variable-frequency transmission of L-band to C-band signals is realized.
To better implement the present invention, further, the receiving front-end component includes a plurality of amplifiers, a plurality of attenuators, and a coupled amplification module.
In order to better realize the invention, the system further comprises a plurality of amplifiers, a plurality of attenuators, a plurality of filters, a wave detector, an ADC chip and an FPGA board;
the frequency measurement result comprises frequency measurement information, received signal power information, pulse width and repetition frequency.
In order to better implement the present invention, further, the fiber delay module includes a light emitting module, a fiber delay line, and a light receiving module.
In order to better implement the invention, further, the front end of the up-conversion component comprises a plurality of amplifiers, a plurality of attenuators and an 8-in-1 combiner;
the down conversion component includes a plurality of amplifiers, a plurality of attenuators, a plurality of filters, and a plurality of mixers.
In order to better implement the invention, further, the attenuator is a numerical control attenuator.
In order to better implement the present invention, further, the frequency synthesizer assembly includes a frequency hopping source module and a plurality of point frequency source modules, the frequency hopping source module adopts a DDS module, and the point frequency source module adopts a CBB module.
To better implement the invention, further the control unit comprises an FPGA board.
In order to better implement the present invention, further, the power supply unit is further included, and the power supply unit at least includes a power supply module, a plurality of DC-DC chips, and a plurality of LDO chips.
In order to better implement the invention, further, the overall structure length of the multichannel adaptive frequency converter is 270mm, the width is 185mm, the thickness is 73mm, the structure adopts aluminum materials, and weight reduction measures are adopted, so that the overall structure weight is less than 6 kg.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the invention can realize variable frequency transmission among different frequency signals and has the effects of more channels, small volume, wide frequency range and strong continuous capability;
(2) the invention greatly improves the efficiency of frequency signal conversion transmission based on the characteristics of self-adaptive frequency conversion.
Drawings
The invention is further described in connection with the following figures and examples, all of which are intended to be open ended and within the scope of the invention.
FIG. 1 is a schematic diagram of a miniaturized L-to-C band multi-channel adaptive frequency converter provided by the present invention;
FIG. 2 is a schematic diagram of a receiving front-end component of a miniaturized L-band to C-band multi-channel adaptive frequency converter according to the present invention;
FIG. 3 is a schematic diagram of a frequency measurement component of a miniaturized L-to-C band multi-channel adaptive frequency converter provided by the present invention;
FIG. 4 is a schematic diagram of an optical fiber delay module of a miniaturized L-to-C band multichannel adaptive frequency converter provided by the present invention;
FIG. 5 is a schematic diagram of the down-conversion components of a miniaturized L-to-C band multi-channel adaptive frequency converter provided by the present invention;
FIG. 6 is a schematic diagram of an up-conversion component of a miniaturized L-to-C band multi-channel adaptive frequency converter provided by the present invention;
fig. 7 is a schematic diagram of a frequency synthesizer assembly of a miniaturized L-to-C band multichannel adaptive frequency converter provided by the present invention;
fig. 8 is a schematic diagram of a control unit of a miniaturized L-to-C band multichannel adaptive frequency converter provided by the present invention.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments, and therefore should not be considered as limiting the scope of protection. All other embodiments, which can be obtained by a worker skilled in the art based on the embodiments of the present invention without making creative efforts, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected" or "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through an intermediary, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
a miniaturized L-to-C band multi-channel adaptive frequency converter of the present embodiment, as shown in fig. 1-8, comprises an L-to-C band miniaturized multi-channel adaptive frequency converter, which comprises a receiving front end, a fiber delay module, a frequency measurement component, a frequency synthesizer component, an up-conversion component and a down-conversion component,
the receiving front end component outputs a radio frequency signal which is accessed to the up-conversion component through the optical fiber delay module, the radio frequency signal is coupled and output by the receiving front end component and is accessed to the frequency measurement module, so that frequency measurement is realized, a frequency measurement result including frequency measurement information, received signal power information, pulse width, repetition frequency and other information is given, and a trigger pulse is output; the receiving front-end component at least comprises a plurality of amplifiers, a plurality of attenuators and a coupling amplification module; the frequency measurement component at least comprises a plurality of amplifiers, a plurality of attenuators, a plurality of filters, a wave detector, an ADC chip and an FPGA board; the optical fiber delay module at least comprises an optical transmitting module, an optical fiber delay line and an optical receiving module; the frequency synthesizer component is connected with the up-conversion component and the down-conversion component respectively, the input end of the up-conversion component is connected with the intermediate frequency signal A, the output end of the up-conversion component outputs L-C waveband radio frequency signal A, the input end of the down-conversion component is connected with L-C waveband radio frequency signal B, the output end of the down-conversion component outputs intermediate frequency signal B, the frequency synthesizer component further comprises a control unit, the control unit is connected with the frequency synthesizer component respectively, the up-conversion component and the down-conversion component are connected, the up-conversion component at least comprises a plurality of amplifiers, a plurality of attenuators, a plurality of filters and a plurality of mixers, the down-conversion component at least comprises a plurality of amplifiers, a plurality of attenuators, a plurality of filters and a plurality of mixers, the frequency synthesizer component comprises a frequency hopping source module and two point frequency source modules, the frequency hopping source module adopts a miniaturized CBB module, the point frequency source module adopts a miniaturized CBB module, and the control unit comprises an FPGA (field programmable gate array) board. The power supply unit at least comprises a power supply module, a plurality of DC-DC chips and a plurality of LDO chips. Therefore, the invention can realize variable frequency transmission among different frequency signals, has the characteristics of multiple channels, small volume, wide frequency range, strong continuous capability and self-adaptive frequency conversion, and greatly improves the efficiency of frequency signal conversion transmission.
Example 2:
in this embodiment, a radio frequency signal is received at the front receiving end, and as shown in fig. 2, the radio frequency signal sequentially passes through the coarse adjustment attenuator and the low noise amplifier and then enters the coupler for coupling, and the radio frequency signal and the coupling signal are output after coupling, amplification and attenuation gain adjustment, wherein the coupling output gain is 15dB to 20dB, and the coupling degree of the microstrip coupler is 18dB ± 1 dB.
Other parts of this embodiment are the same as embodiment 1, and thus are not described again.
Example 3:
this embodiment is further optimized on the basis of the foregoing embodiment 1 or 2, as shown in fig. 3, the frequency measurement component amplifies and attenuates the radio frequency signal, processes the radio frequency signal through the ADC chip and the FPGA unit, processes the radio frequency signal through the table look-up frequency measurement unit and the weighted averaging unit, and outputs frequency related information, so that frequency measurement of the coupling signal output by the receiving front end component can be realized, and the measured frequency information is output to the control unit, thereby completing control of local oscillator frequency hopping. Meanwhile, the frequency measurement component also needs to give a frequency measurement result which comprises information such as frequency measurement information, received signal power information, pulse width, repetition frequency and the like, and simultaneously outputs trigger pulses, and the frequency measurement component is suitable for signal types including pulses, linear frequency modulation, continuous waves and phase encoding.
Other parts of this embodiment are the same as those of embodiment 1 or 2, and thus are not described again.
Example 4:
in this embodiment, a further optimization is performed on the basis of any one of the embodiments 1 to 3, as shown in fig. 4, the optical fiber delay module has a broadband delay function, and the optical fiber delay module needs to ensure that the amplitude of the delayed signal is linear, stable, and phase-stable, and the signal is free of interference, and includes an optical transmitting module, an optical fiber delay line, and an optical receiving module, where the radio frequency signal is converted into an optical signal by the optical transmitting module, and the delayed optical signal is converted into a radio frequency signal by the optical receiver after being delayed by 3us by the optical fiber delay line, and is output.
Other parts of this embodiment are the same as any of embodiments 1 to 3, and thus are not described again.
Example 5:
in this embodiment, a local oscillator, a second local oscillator, and a third local oscillator output by the frequency synthesizer component are respectively connected to the up-conversion component and the down-conversion component, where the third local oscillator and the second local oscillator are point-frequency local oscillators, and are directly generated by the frequency synthesizer component and output to the up-conversion component and the down-conversion component; the local oscillator is a broadband local oscillator, can generate a dot frequency local oscillator, a step frequency local oscillator (the frequency is adjustable in a step mode, the minimum step frequency is 1 MHz), and a broadband linear frequency modulation local oscillator (the bandwidth is adjustable from 1MHz to 1000 MHz), can control the frequency change of the broadband local oscillator in real time, and can be triggered by an up-conversion local oscillator and a down-conversion local oscillator respectively.
As shown in fig. 7, the frequency synthesizer includes two point frequency source modules and one frequency hopping source module, the point frequency source module adopts a mature miniaturized CBB module, and the direct phase-locked output provides the second and third local oscillation signals for the up-down frequency conversion module; the DDS generates a linear frequency hopping signal with the frequency stepping of 0.5MHz, and the linear frequency hopping signal and a radio frequency signal with the instantaneous bandwidth of 500MHz output by the AD chip of the control unit are subjected to frequency mixing and frequency doubling treatment to provide a first local oscillation signal for the up-down frequency conversion assembly. In addition, a clock signal is generated by a 100MHz constant temperature crystal oscillator, and can be switched into an external clock through a switch, the clock signal passes through a power divider and is divided into 5 paths, 4 paths are respectively used as reference signals of a point frequency source module and a frequency hopping source module, and 1 path of directly amplified power divider is output as a clock reference signal.
Other parts of this embodiment are the same as any of embodiments 1 to 4, and thus are not described again.
Example 6:
in this embodiment, further optimization is performed on the basis of any one of the embodiments 1 to 5, and the up-conversion module has an input end connected to the intermediate frequency signal a, and outputs the radio frequency signals in the L to C bands in a segmented manner after three times of frequency conversion, as shown in fig. 6, 8 paths of intermediate frequency signals are amplified and attenuated and then output via an 8-in-1 combiner, and 8 paths of intermediate frequency signals are input to the 8-in-1 combiner and then output after the intermediate frequency signals are amplified and digitally attenuated. The up-conversion component amplifies, attenuates and filters an input combined intermediate frequency signal A, then the input combined intermediate frequency signal A enters a first frequency mixer, mixes with a third local oscillator signal to output an intermediate frequency signal A1, and after amplification, attenuation compensation and filtering, the input combined intermediate frequency signal A enters a second frequency mixer, mixes with the second local oscillator signal to output an intermediate frequency signal A2, and after amplification, attenuation and filtering, the input combined intermediate frequency signal A enters the third frequency mixer, mixes with a first linear frequency hopping local oscillator signal, and outputs an L-band radio frequency signal A to a C-band radio frequency signal A and a detection signal through a switch filter bank. Because the link frequency before secondary frequency conversion is relatively low, the components and parts use packaged components.
The input end of the down-conversion module is connected to the L-band radio frequency signal B to the C-band radio frequency signal B, and outputs the intermediate frequency signal B after three times of frequency conversion, as shown in fig. 5, the down-conversion module inputs the L-band radio frequency signal B to the C-band radio frequency signal B through the filter bank, and after amplification, attenuation and filtering, the down-conversion module enters the first mixer, and mixes with the first linear frequency hopping local oscillation signal to output the intermediate frequency signal B2, and after amplification, attenuation compensation and filtering, the down-conversion module enters the second mixer, mixes with the second local oscillation signal to output the intermediate frequency signal B1, and after amplification, attenuation and filtering, the down-conversion module enters the third mixer, and mixes with the third local oscillation signal to output the intermediate frequency signal B.
Other parts of this embodiment are the same as any of embodiments 1 to 5, and thus are not described again.
Example 7:
this embodiment is further optimized on the basis of any of embodiments 1 to 6, where an input end of the down conversion module is connected to an L-band radio frequency signal B to a C-band radio frequency signal B, and outputs an intermediate frequency signal B after three times of frequency conversion, as shown in fig. 5, the down conversion module inputs the L-band radio frequency signal B to the C-band radio frequency signal B through a filter bank, and after amplification, attenuation, and filtering, the down conversion module enters a first mixer, mixes with a first linear frequency hopping local oscillator signal to output an intermediate frequency signal B2, and after amplification, attenuation, compensation, and filtering, enters a second mixer, mixes with a second local oscillator signal to output an intermediate frequency signal B1, and after amplification, attenuation, and filtering, enters a third mixer, mixes with a third local oscillator signal to output an intermediate frequency signal B.
Other parts of this embodiment are the same as any of embodiments 1 to 6, and thus are not described again.
Example 8:
as shown in fig. 8, the control unit controls the signal to transmit the frequency, attenuation, and modulation modes to the motherboard through the SPI interface, and forwards the frequency, attenuation, and modulation modes to the up-conversion component, the down-conversion component, the frequency measurement component, and the frequency synthesizer component through the FPGA on the motherboard, thereby implementing the control and query functions. And the control unit FPGA mainly completes logic control and attenuation control on the up-down conversion component. Frequency information sent by the frequency measurement component is analyzed by the FPGA and then controls frequency hopping of the calibration source, channel selection of a switch filter bank in the up-down frequency conversion component is controlled according to the frequency information, and information of each component and self-adaptive frequency conversion are monitored in real time.
Other parts of this embodiment are the same as any of embodiments 1 to 7, and thus are not described again.
Example 9:
the present embodiment is further optimized on the basis of any one of embodiments 1 to 8, the power supply unit mainly comprises a DC-DC unit/chip and an LDO chip, and the 28V input voltage is converted by the DC-DC unit/chip and then subjected to secondary voltage stabilization by the LDO chip, so that the power supply ripple can be reduced, and power can be supplied to each unit. Specifically, the DC-DC unit/chip mainly completes 28V to +15.3V, +5.6V and-6V voltage, the LDO chip mainly completes low-voltage difference conversion and mainly supplies power to devices such as an amplifier, a switch, a numerical control attenuator and the like, the low-voltage difference conversion is converted into +9.5V, +5V, +3.3V, +2.5V, +1.8V voltage and is connected with a power supply pin of an FPGA, a negative pressure protection circuit is added in the power supply of the gallium nitride power amplifier tube to ensure the power-on time sequence of the tube, and the radio frequency numerical control attenuator adopts a double NOT gate chip to complete positive and negative voltage conversion and driving of a control signal.
Other parts of this embodiment are the same as any of embodiments 1 to 8, and thus are not described again.
Example 10:
the embodiment is further optimized on the basis of any one of the embodiments 1 to 9, the length of the whole structure is 270mm, the width is 185mm, the thickness is 73mm, the structure adopts light aluminum materials, and sufficient weight reduction measures are adopted, and the whole weight is less than 6 kg.
Other parts of this embodiment are the same as any of embodiments 1 to 9, and thus are not described again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are within the scope of the present invention.
Claims (10)
1. A miniaturized L-to-C waveband multi-channel self-adaptive frequency converter is characterized by comprising a receiving front end component, an optical fiber delay module, a frequency measurement component, a frequency synthesis component, an up-conversion component, a down-conversion component and a control unit; the receiving front end component is respectively connected with the optical fiber delay module and the frequency measuring component, the frequency synthesizing component is respectively connected with the up-conversion component and the down-conversion component, and the control unit is respectively connected with the frequency synthesizing component, the frequency measuring component, the up-conversion component and the down-conversion component; the receiving front end component outputs a radio frequency signal, the radio frequency signal is accessed into the up-conversion component through the optical fiber delay module, the receiving front end component couples the output radio frequency signal and accesses the frequency measurement module to carry out frequency measurement, and meanwhile, the frequency measurement module provides a frequency measurement result and outputs a trigger pulse;
the input end of the up-conversion component inputs an intermediate frequency signal A, and the output end of the up-conversion component outputs an L-band radio frequency signal A to a C-band radio frequency signal A; the input end of the down-conversion component is connected with the L-band radio-frequency signal B to the C-band radio-frequency signal B, and the output end of the down-conversion component outputs an intermediate-frequency signal B; and the variable-frequency transmission of L-band to C-band signals is realized.
2. The miniaturized L-to-C band multichannel adaptive frequency converter of claim 1, wherein the receive front-end components comprise amplifiers, attenuators, and coupled amplification modules.
3. The miniaturized L-to-C band multichannel adaptive frequency converter of claim 1, wherein the frequency measurement component comprises a plurality of amplifiers, a plurality of attenuators, a plurality of filters, a detector, an ADC chip and an FPGA board; the frequency measurement result comprises frequency measurement information, received signal power information, pulse width and repetition frequency.
4. The miniaturized L-to-C band multichannel adaptive frequency converter of claim 1, wherein the fiber delay module comprises an optical transmit module, a fiber delay line and an optical receive module.
5. A miniaturized L-to-C band multichannel adaptive frequency converter according to claim 1, characterized in that it comprises: the up-conversion component comprises a plurality of amplifiers, a plurality of attenuators, a plurality of filters and an 8-in-1 combiner; the down conversion component includes a plurality of amplifiers, a plurality of attenuators, a plurality of filters, and a plurality of mixers.
6. A miniaturized L-band multi-channel adaptive frequency converter according to claim 2, 3 or 5, characterized in that the attenuator is a digitally controlled attenuator.
7. The miniaturized L-to-C band multichannel adaptive frequency converter according to claim 1, wherein the frequency synthesizer assembly comprises a frequency hopping source module and a plurality of point frequency source modules, the frequency hopping source module adopts a DDS module, and the point frequency source module adopts a CBB module.
8. A miniaturized L-to-C band multichannel adaptive frequency converter according to claim 1, characterized in that said control unit comprises FPGA boards.
9. The miniaturized L-to-C band multichannel adaptive frequency converter according to claim 1, further comprising a power supply unit including at least a power supply module, a plurality of DC-DC chips, and a plurality of LDO chips.
10. The miniaturized L-to-C band multichannel adaptive frequency transformer of claim 1, wherein the multichannel adaptive frequency transformer has a whole structure length of 270mm, a width of 185mm, a thickness of 73mm, an aluminum structure, and weight reduction measures, so that the whole structure weight is less than 6 kg.
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| CN202210332915.7A CN114785358A (en) | 2022-03-31 | 2022-03-31 | Miniaturized L-to-C waveband multi-channel self-adaptive frequency converter |
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| CN202210332915.7A CN114785358A (en) | 2022-03-31 | 2022-03-31 | Miniaturized L-to-C waveband multi-channel self-adaptive frequency converter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115333567A (en) * | 2022-10-14 | 2022-11-11 | 南京冉思电子科技有限公司 | Unmanned aerial vehicle target simulation ware frequency conversion and fiber module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115333567A (en) * | 2022-10-14 | 2022-11-11 | 南京冉思电子科技有限公司 | Unmanned aerial vehicle target simulation ware frequency conversion and fiber module |
| CN115333567B (en) * | 2022-10-14 | 2023-02-28 | 南京冉思电子科技有限公司 | Unmanned aerial vehicle target simulation ware frequency conversion and fiber module |
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