CN204439829U - Multifunction radar waveform generator and multiband radar expanding system - Google Patents
Multifunction radar waveform generator and multiband radar expanding system Download PDFInfo
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- CN204439829U CN204439829U CN201520183027.9U CN201520183027U CN204439829U CN 204439829 U CN204439829 U CN 204439829U CN 201520183027 U CN201520183027 U CN 201520183027U CN 204439829 U CN204439829 U CN 204439829U
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Abstract
The utility model discloses a kind of multifunction radar waveform generator and multiband radar expanding system, multifunction radar waveform generator comprises control module, communication module, waveform generation module, I/O expansion module, A/D sampling module, filter and amplification module, power management module and clock Shaping Module, multifunction radar waveform generator is under the effect of computer for controlling, many kinds of radar waveform can not only be produced, and have signal madulation, timing and malfunction monitoring function concurrently, can the full machine synchronous working of effective coordination radar, increase work efficiency; Multiband radar expanding system comprises crystal oscillator, frequency synthesizer, upconverter, bandpass filter, power amplifier, double conversion device and an above-mentioned multifunction radar waveform generator, the intermediate-freuqncy signal that multifunction radar waveform generator produces can be extended to L-band by multiband radar expanding system, by increasing different frequency-variable modules, produce the multiband waveform meeting different frequency range radar demand.
Description
Technical field
The utility model relates to the radar exploration technique field, particularly relates to a kind of multifunction radar waveform generator and multiband radar expanding system.
Background technology
Modern radar especially modern battlefield reconnaissance radar is more and more tending towards to miniaturization, multi-functional, highly integrated future development, thus requires that Radar Waveform Generator need have many waveforms, many Time Bandwidths selection function, possesses the feature that volume is little simultaneously.It is many based on analogy method that traditional radar waveform produces technology, as produced the microwave phase converter of phase-coded signal, producing the voltage controlled oscillator etc. of linear FM signal.Wherein microwave phase converter often elder generation's phase modulation on a carrier frequency subharmonic level, then obtains desired phase-coded signal by frequency multiplier frequency multiplication; Voltage controlled oscillator then produces linear FM signal by the control of linear saw tooth waveform voltage.But adopt the microwave phase converter of analog form to there is the weakness that carrier wave suppresses poor, parastic modulation is high in phase encoding modulation, affect the detection of target; Though voltage controlled oscillator method is simple, but the degree of stability that there is oscillator is poor, oscillation frequency varies with temperature problems such as can drifting about, phase noise is large, fm linearity is not high, and all need for it designs specific realizing circuit for often kind of waveform, cost is high, cycle is long, hardware device is bulky, can not meet the requirement of miniaturization.The generation of Modern Radar Signal generally adopts software and radio technique, namely utilizes digital technology to produce various radar waveform.Though the digital waveform based on software radio produces technology do not have above-mentioned many disadvantages, adopt this technology generally can only design for the radar of a certain specific model, its wave form is often very single, poor universality.
Utility model content
The purpose of this utility model is to provide a kind of multifunction radar waveform generator and multiband radar expanding system, multifunction radar waveform generator is under the control action of computer for controlling, many kinds of radar waveform can not only be produced, and have signal madulation, timing and malfunction monitoring function concurrently, can the full machine synchronous working of effective coordination radar, increase work efficiency; The intermediate-freuqncy signal that multifunction radar waveform generator produces can be extended to L-band by multiband radar expanding system, by increasing different frequency-variable modules, produces the multiband waveform meeting different frequency range radar demand.
For achieving the above object, the technical solution adopted in the utility model is:
Multifunction radar waveform generator, comprise control module, communication module, waveform generation module, I/O expansion module, A/D sampling module, filter and amplification module, power management module and clock Shaping Module, described control module connects communication module and I/O expansion module, the input end of the output terminal link control module of described A/D sampling module, the output terminal of the input end link control module of described waveform generation module, the output terminal of waveform generation module connects the input end of filter and amplification module, described power management module is control module, waveform generation module and clock Shaping Module provide voltage signal, the input end of described clock Shaping Module connects external timing signal, the input end of the output terminal link control module of clock Shaping Module, communication module connection control computing machine.
Described filter and amplification module comprises SAW filter and operational amplifier, also comprise a Π type attenuation network and the 2nd Π type attenuation network, the output terminal of SAW filter connects the input end of a Π type attenuation network, the input end of the output terminal concatenation operation amplifier of the one Π type attenuation network, the output terminal of operational amplifier connects the input end of the 2nd Π type attenuation network.
Described waveform generation module adopts DDS chip AD9910BSVZ.
Described A/D sampling module comprises AD conversion chip AD9280 and peripheral circuit thereof, first pin of AD conversion chip AD9280, 14 pin, 16 pin, 17 pin, 18 pin and the 25 pin ground connection respectively, second pin of AD conversion chip AD9280 connects digital voltage signal, second pin is also by the first capacity earth, the sampled clock signal that the 15 pin link control module of AD conversion chip AD9280 provides, 19 pin of AD conversion chip AD9280 and the 20 pin are respectively by the first resistance and the second resistance eutral grounding, 21 pin of AD conversion chip AD9280 and the 26 pin are all by the 5th capacity earth, 5th electric capacity two ends are also parallel with the 6th electric capacity, 22 pin of AD conversion chip AD9280 connects the first end of the 3rd electric capacity respectively, the first end of the 4th electric capacity and the first end of the 8th electric capacity, second end ground connection of the 8th electric capacity, 24 pin of AD conversion chip AD9280 connects the second end of the 3rd electric capacity respectively, second end of the 4th electric capacity and the first end of the 7th electric capacity, second end ground connection of the 7th electric capacity, 23 pin of AD conversion chip AD9280 and the equal connecting analog voltage signal of the 28 pin, and the 23 pin and the 28 pin are all by the second capacity earth, the 27 pin connecting analog input signal of AD conversion chip AD9280.
Described power management module comprises 3.3V voltage cell, 2.5V voltage cell, 1.8V voltage cell and 1.2V voltage cell, 3.3V voltage cell adopts power supply chip MIC29300-3.3BU, 2.5V voltage cell adopts power supply chip ADP151AUJZ-2.5-R7,1.8V voltage cell adopts power supply chip ADP151AUJZ-1.8-R7, and 1.2V voltage cell adopts power supply chip ADP151AUJZ-1.2-R7.
Described communication module adopts 422 serial communications, comprises difference chip AM26C31, AM26C32 and two panels driving chip SN74LVC4245AE.
Multiband radar expanding system, comprise crystal oscillator, frequency synthesizer, multifunction radar waveform generator, a upconverter, bandpass filter, power amplifier and double conversion device, the input end of described frequency synthesizer connects crystal oscillator, the output terminal of frequency synthesizer connects the input end of multifunction radar waveform generator respectively, the input end of a upconverter and the input end of double conversion device, the output terminal of multifunction radar waveform generator connects the input end of a upconverter, the output terminal connecting band bandpass filter successively of a upconverter, power amplifier and double conversion device, described multifunction radar waveform generator comprises control module, communication module, waveform generation module, I/O expansion module, A/D sampling module, filter and amplification module, power management module and clock Shaping Module, described control module connects communication module and I/O expansion module, the input end of the output terminal link control module of described A/D sampling module, the output terminal of the input end link control module of described waveform generation module, the output terminal of waveform generation module connects the input end of filter and amplification module, described power management module is control module, waveform generation module and clock Shaping Module provide voltage signal, the input end of described clock Shaping Module connects external timing signal, the input end of the output terminal link control module of clock Shaping Module, communication module connection control computing machine.
Described filter and amplification module comprises SAW filter and operational amplifier, also comprise a Π type attenuation network and the 2nd Π type attenuation network, the output terminal of SAW filter connects the input end of a Π type attenuation network, the input end of the output terminal concatenation operation amplifier of the one Π type attenuation network, the output terminal of operational amplifier connects the input end of the 2nd Π type attenuation network.
Described waveform generation module adopts DDS chip AD9910BSVZ.
Described communication module adopts 422 serial communications, comprises difference chip AM26C31, AM26C32 and two panels driving chip SN74LVC4245AE.
The multifunction radar waveform generator that the utility model provides, utilize I/O expansion module and A/D sampling module, each for radar system extension set can be connected to the control module of multifunction radar waveform generator, the fault status information of each extension set of control module receiving radar system, and report computer for controlling by communication module, realize the monitoring of extension set On-line Fault; Control module also reads the control command of computer for controlling by communication module, and then controls the mode of operation of each radar extension set and work schedule etc.Multifunction radar waveform generator, by the cooperation control to each extension set of radar system, effectively can reduce failure rate, promotes Effect on Detecting.
The waveform generation module of multifunction radar waveform generator adopts DDS(direct digital synthesis technique) technology, the multiple intermediate-freuqncy signal that radar system needs can be produced, and carry out the signal madulation of various ways.
The multiband radar expanding system that the utility model provides, produce on the basis of multiple intermediate-freuqncy signal at multifunction radar waveform generator, utilize frequency synthesizer by the band spreading of waveform to L-band, then according to the increase in demand frequency-variable module of different frequency range radar, to produce the signal of different-waveband, enhance the versatility of system.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the utility model multifunction radar waveform generator;
Fig. 2 is the circuit diagram of the utility model multifunction radar waveform generator filter and amplification module;
Fig. 3 is the circuit diagram of the utility model multifunction radar waveform generator A/D sampling module;
Fig. 4 is the theory diagram of the utility model multiband radar expanding system.
Embodiment
As shown in Figure 1, multifunction radar waveform generator described in the utility model, comprise control module, communication module, waveform generation module, I/O expansion module, A/D sampling module, filter and amplification module, power management module and clock Shaping Module, control module connects communication module and I/O expansion module, the input end of the output terminal link control module of A/D sampling module, the output terminal of the input end link control module of waveform generation module, the output terminal of waveform generation module connects the input end of filter and amplification module, power management module is control module, waveform generation module and clock Shaping Module provide voltage signal, the input end of the output terminal link control module of clock Shaping Module, for control module provides global clock signal, the input end of clock Shaping Module connects external timing signal, communication module connection control computing machine.
Control module adopts fpga chip EP3C10F256I7N, comprises clock unit, serial communication unit, extension set state cell, logic control element, TR timing unit, AD data cell and DDS control module.The global clock signal that clock unit produces based on clock Shaping Module, by frequency division or inner phaselocked loop for the baud rate etc. of A/D sampling module and serial communication provides clock signal; Serial communication unit is responsible for the communication between control module each functional unit and computer for controlling; Extension set state cell reads the status signal of each extension set of radar in real time, and reports computer for controlling; Logic control element reads the control command of computer for controlling by communication module, implements to control to other radar extension sets; TR timing unit provides TR clock signal for each extension set of radar; AD data cell reads 8 sampled datas that A/D sampling module exports, and reports computer for controlling by communication module after data packing; DDS control module writes its function register by the input port of waveform generation module, produces the signal of required type.
Waveform generation module adopts DDS chip AD9910BSVZ, the multiple intermediate-freuqncy signals such as single frequency point signal, pulse-modulated signal, linear FM signal and phase-coded signal can not only be produced, also can realize auto linear and random frequency, phase place, amplitude scan, after signal madulation, export required random waveform.
I/O expansion module adopts five driving chip SN74LVC4245A, by changing the Transistor-Transistor Logic level of LVTTL and 5V of 3.3V, can complete control module to other radar extension set mode of operations, the control of state sequential and the reading to its fault status information.Communication module adopts 422 serial communications, comprises difference chip AM26C31, AM26C32 and two panels driving chip SN74LVC4245AE, can complete the communication between control module and computer for controlling.Clock Shaping Module selects two input nand gate circuit NL27WZ00, mainly carries out preliminary Shape correction to the global clock signal that outside inputs to control module.
As shown in Figure 2, the filter and amplification module of multifunction radar waveform generator comprises SAW filter and operational amplifier, also comprise a Π type attenuation network and the 2nd Π type attenuation network, one Π type attenuation network comprises the 3rd resistance R3, 4th resistance R4 and the 5th resistance R5, the first end of the 3rd resistance R3 connects the first end of the 4th resistance R4, the second end ground connection of the 3rd resistance R3, second end of the 4th resistance R4 connects the first end of the 5th resistance R5, the second end ground connection of the 5th resistance R5, the first end of the 4th resistance R4 is the input end of a Π type attenuation network, second end of the 4th resistance R4 is the output terminal of a Π type attenuation network, 2nd Π type attenuation network comprises the 7th resistance R7, 8th resistance R8 and the 9th resistance R9, the first end of the 7th resistance R7 connects the first end of the 8th resistance R8, the second end ground connection of the 7th resistance R7, second end of the 8th resistance R8 connects the first end of the 9th resistance R9, the second end ground connection of the 9th resistance R9, the first end of the 8th resistance R8 is the input end of the 2nd Π type attenuation network, second end of the 8th resistance R8 is the output terminal of the 2nd Π type attenuation network, the input end of SAW filter connects the output terminal of waveform generation module by the first inductance L 1, the output terminal of waveform generation module is also by the 9th electric capacity C9 ground connection, the output terminal of SAW filter connects the input end of a Π type attenuation network by the second inductance L 2, the output terminal of SAW filter is also by the tenth electric capacity C10 ground connection, the output terminal of the one Π type attenuation network passes through the input end of the 11 electric capacity C11 concatenation operation amplifier, the output terminal of operational amplifier connects the input end of the 2nd Π type attenuation network by the 13 electric capacity C13, the output terminal of operational amplifier also connects the first end of the 3rd inductance L 3, second end of the 3rd inductance L 3 connects the first end of the 6th resistance R6, second end of the 6th resistance R6 connects the first end of power supply and the 12 electric capacity C12, the second end ground connection of the 12 electric capacity C12.Filter and amplification module adds Π type attenuation network respectively in the front-end and back-end of amplifier, it can be utilized to regulate the power of waveform generation module output signal, add the versatility of whole waveform generator.
As shown in Figure 3, A/D sampling module adopts AD conversion chip AD9280, first pin 1 of AD conversion chip AD9280, 14 pin 14, 16 pin 16, 17 pin 17, 18 pin the 18 and the 25 pin is ground connection respectively, second pin 2 of AD conversion chip AD9280 connects digital voltage signal D3V3, second pin 2 is also by the first electric capacity C1 ground connection, the sampled clock signal A_CLK that 15 pin 15 link control module of AD conversion chip AD9280 provides, 19 pin the 19 and the 20 pin 20 of AD conversion chip AD9280 is respectively by the first resistance R1 and the second resistance R2 ground connection, 21 pin the 21 and the 26 pin 26 of AD conversion chip AD9280 is all by the 5th electric capacity C5 ground connection, 5th electric capacity C5 two ends are also parallel with the 6th electric capacity C6, 22 pin 22 of AD conversion chip AD9280 connects the first end of the 3rd electric capacity C3 respectively, the first end of the 4th electric capacity C4 and the first end of the 8th electric capacity C8, the second end ground connection of the 8th electric capacity C8, 24 pin 24 of AD conversion chip AD9280 connects second end of the 3rd electric capacity C3 respectively, second end of the 4th electric capacity C4 and the first end of the 7th electric capacity C7, the second end ground connection of the 7th electric capacity C7, 23 pin the 23 and the 28 pin 28 all connecting analog voltage signal A3V3 of AD conversion chip AD9280, and the 23 pin the 23 and the 28 pin 28 is all by the second electric capacity C2 ground connection, the 27 pin 27 connecting analog input signal AIN of AD conversion chip AD9280.A/D sampling module can complete the real-time sampling to radar each point of acc power, after reporting computer for controlling, realizes the on-line monitoring of extension set fault by control module.
Power management module comprises 3.3V voltage cell, 2.5V voltage cell, 1.8V voltage cell and 1.2V voltage cell, can be respectively the voltage signal that disparate modules provides required.Wherein 3.3V voltage cell adopts power supply chip MIC29300-3.3BU, the analog voltage signal of 3.3V and the digital voltage signal of 3.3V can be produced, 2.5V voltage cell adopts power supply chip ADP151AUJZ-2.5-R7,1.8V voltage cell adopts power supply chip ADP151AUJZ-1.8-R7, and 1.2V voltage cell adopts power supply chip ADP151AUJZ-1.2-R7.Above-mentioned voltage cell all adopts linear power supply chip, and the high frequency E MI produced with power switch can be avoided to disturb.
The multifunction radar waveform generator that the utility model provides in use, utilize I/O expansion module and A/D sampling module, can by the transmitting extension set of radar system, receive extension set, signal transacting extension set and frequency synthesizer and be connected to the control module of multifunction radar waveform generator, the fault status information of each extension set of control module receiving radar system, and report computer for controlling by communication module, realize the monitoring of extension set On-line Fault; Control module also reads the control command of computer for controlling by communication module, and then by I/O expansion module control to launch extension set power amplification, receive the gain reduction of extension set and the frequency code word write operation of frequency synthesizer, and provide clock signal for receiving extension set, signal transacting extension set and frequency synthesizer, realize the sequential control of system.Multifunction radar waveform generator integrates the functions such as waveform generation, malfunction monitoring, timing, by the cooperation control to each extension set of radar system, effectively can promote the work efficiency of the full machine of radar, reach better Effect on Detecting.
As shown in Figure 4, multiband radar expanding system described in the utility model, comprise crystal oscillator, frequency synthesizer, multifunction radar waveform generator, a upconverter, bandpass filter, power amplifier and double conversion device, the input end of described frequency synthesizer connects crystal oscillator, the output terminal of frequency synthesizer connects the input end of multifunction radar waveform generator respectively, the input end of a upconverter and the input end of double conversion device, the output terminal of Radar Waveform Generator connects the input end of a upconverter, the output terminal connecting band bandpass filter successively of a upconverter, power amplifier and double conversion device.
Multifunction radar waveform generator comprises control module, communication module, waveform generation module, I/O expansion module, A/D sampling module, filter and amplification module, power management module and clock Shaping Module, control module connects communication module and I/O expansion module, the input end of the output terminal link control module of A/D sampling module, the output terminal of the input end link control module of waveform generation module, the output terminal of waveform generation module connects the input end of filter and amplification module, power management module is control module, waveform generation module and clock Shaping Module provide voltage signal, the input end of clock Shaping Module connects external timing signal, the input end of the output terminal link control module of clock Shaping Module, communication module connection control computing machine.
The global clock signal FPGA_CLK that the clock Shaping Module receive frequency synthesizer of multifunction radar waveform generator provides, guarantees the synchronous of whole system; The waveform generation module of multifunction radar waveform generator adopts DDS chip AD9910BSVZ, and this module receives the control command of control module, and the reference clock signal DDS_CLK utilizing frequency synthesizer to provide, can produce multiple intermediate-freuqncy signal; Filter and amplification module output signal to the time upconverter of multifunction radar waveform generator, this module adds Π type attenuation network respectively in the front-end and back-end of amplifier, can utilize the power of its regulation output signal, adds the versatility of whole system.
Multiband radar expanding system in use, high stable crystal oscillator source is adopted to provide reference clock signal, guarantee the synchronous of whole system, frequency synthesizer receives reference clock signal, after frequency multiplication, filtering and amplification process, for Radar Waveform Generator provides global clock signal FPGA_CLK and reference clock signal DDS_CLK, and upconverter provides a local oscillation signal f for one time
l, the intermediate-freuqncy signal IF that Radar Waveform Generator generates exports a upconverter to, to L-band after a up-conversion, and then exports double conversion device to through bandpass filter and power amplifier.According to the demand of different frequency range radar, the signal by selecting corresponding local vibration source can produce different-waveband during double conversion, such as, select f
cthe signal of C-band can be produced as local oscillation signal, select f
xthe signal of X-band can be produced as local oscillation signal, select f
kUk can be produced as local oscillation signal
uthe signal of wave band, enhances the versatility of system.
Claims (10)
1. multifunction radar waveform generator, it is characterized in that: comprise control module, communication module, waveform generation module, I/O expansion module, A/D sampling module, filter and amplification module, power management module and clock Shaping Module, described control module connects communication module and I/O expansion module, the input end of the output terminal link control module of described A/D sampling module, the output terminal of the input end link control module of described waveform generation module, the output terminal of waveform generation module connects the input end of filter and amplification module, described power management module is control module, waveform generation module and clock Shaping Module provide voltage signal, the input end of described clock Shaping Module connects external timing signal, the input end of the output terminal link control module of clock Shaping Module, communication module connection control computing machine.
2. multifunction radar waveform generator as claimed in claim 1, it is characterized in that: described filter and amplification module comprises SAW filter and operational amplifier, also comprise a Π type attenuation network and the 2nd Π type attenuation network, the output terminal of SAW filter connects the input end of a Π type attenuation network, the input end of the output terminal concatenation operation amplifier of the one Π type attenuation network, the output terminal of operational amplifier connects the input end of the 2nd Π type attenuation network.
3. multifunction radar waveform generator as claimed in claim 1, is characterized in that: described waveform generation module adopts DDS chip AD9910BSVZ.
4. as claim 1, multifunction radar waveform generator described in 2 or 3, it is characterized in that: described A/D sampling module comprises AD conversion chip AD9280 and peripheral circuit thereof, first pin of AD conversion chip AD9280, 14 pin, 16 pin, 17 pin, 18 pin and the 25 pin ground connection respectively, second pin of AD conversion chip AD9280 connects digital voltage signal, second pin is also by the first capacity earth, the sampled clock signal that the 15 pin link control module of AD conversion chip AD9280 provides, 19 pin of AD conversion chip AD9280 and the 20 pin are respectively by the first resistance and the second resistance eutral grounding, 21 pin of AD conversion chip AD9280 and the 26 pin are all by the 5th capacity earth, 5th electric capacity two ends are also parallel with the 6th electric capacity, 22 pin of AD conversion chip AD9280 connects the first end of the 3rd electric capacity respectively, the first end of the 4th electric capacity and the first end of the 8th electric capacity, second end ground connection of the 8th electric capacity, 24 pin of AD conversion chip AD9280 connects the second end of the 3rd electric capacity respectively, second end of the 4th electric capacity and the first end of the 7th electric capacity, second end ground connection of the 7th electric capacity, 23 pin of AD conversion chip AD9280 and the equal connecting analog voltage signal of the 28 pin, and the 23 pin and the 28 pin are all by the second capacity earth, the 27 pin connecting analog input signal of AD conversion chip AD9280.
5. multifunction radar waveform generator as claimed in claim 4, it is characterized in that: described power management module comprises 3.3V voltage cell, 2.5V voltage cell, 1.8V voltage cell and 1.2V voltage cell, 3.3V voltage cell adopts power supply chip MIC29300-3.3BU, 2.5V voltage cell adopts power supply chip ADP151AUJZ-2.5-R7,1.8V voltage cell adopts power supply chip ADP151AUJZ-1.8-R7, and 1.2V voltage cell adopts power supply chip ADP151AUJZ-1.2-R7.
6. multifunction radar waveform generator as claimed in claim 5, is characterized in that: described communication module adopts 422 serial communications, comprises difference chip AM26C31, AM26C32 and two panels driving chip SN74LVC4245AE.
7. multiband radar expanding system, it is characterized in that: comprise crystal oscillator, frequency synthesizer, multifunction radar waveform generator, a upconverter, bandpass filter, power amplifier and double conversion device, the input end of described frequency synthesizer connects crystal oscillator, the output terminal of frequency synthesizer connects the input end of multifunction radar waveform generator respectively, the input end of a upconverter and the input end of double conversion device, the output terminal of multifunction radar waveform generator connects the input end of a upconverter, the output terminal connecting band bandpass filter successively of a upconverter, power amplifier and double conversion device, described multifunction radar waveform generator comprises control module, communication module, waveform generation module, I/O expansion module, A/D sampling module, filter and amplification module, power management module and clock Shaping Module, described control module connects communication module and I/O expansion module, the input end of the output terminal link control module of described A/D sampling module, the output terminal of the input end link control module of described waveform generation module, the output terminal of waveform generation module connects the input end of filter and amplification module, described power management module is control module, waveform generation module and clock Shaping Module provide voltage signal, the input end of described clock Shaping Module connects external timing signal, the input end of the output terminal link control module of clock Shaping Module, communication module connection control computing machine.
8. multiband radar expanding system as claimed in claim 7, it is characterized in that: described filter and amplification module comprises SAW filter and operational amplifier, also comprise a Π type attenuation network and the 2nd Π type attenuation network, the output terminal of SAW filter connects the input end of a Π type attenuation network, the input end of the output terminal concatenation operation amplifier of the one Π type attenuation network, the output terminal of operational amplifier connects the input end of the 2nd Π type attenuation network.
9. multiband radar expanding system as claimed in claim 8, is characterized in that: described waveform generation module adopts DDS chip AD9910BSVZ.
10. multiband radar expanding system as claimed in claim 9, is characterized in that: described communication module adopts 422 serial communications, comprises difference chip AM26C31, AM26C32 and two panels driving chip SN74LVC4245AE.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974231A (en) * | 2016-05-10 | 2016-09-28 | 电子科技大学 | Intermediate-frequency signal generator used for test of L-waveband equipment of avionic system |
| CN109375175A (en) * | 2018-10-23 | 2019-02-22 | 航天恒星科技有限公司 | A kind of radar signal that supporting more waveforms and receive system and method |
| CN110045343A (en) * | 2019-05-10 | 2019-07-23 | 南京新频点电子科技有限公司 | A kind of broad-band multipath radar signal synthetic simulation environment and its working method |
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2015
- 2015-03-30 CN CN201520183027.9U patent/CN204439829U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974231A (en) * | 2016-05-10 | 2016-09-28 | 电子科技大学 | Intermediate-frequency signal generator used for test of L-waveband equipment of avionic system |
| CN105974231B (en) * | 2016-05-10 | 2018-09-07 | 电子科技大学 | A kind of intermediate-freuqncy signal generation device for the test of avionics system L-band equipment |
| CN109375175A (en) * | 2018-10-23 | 2019-02-22 | 航天恒星科技有限公司 | A kind of radar signal that supporting more waveforms and receive system and method |
| CN110045343A (en) * | 2019-05-10 | 2019-07-23 | 南京新频点电子科技有限公司 | A kind of broad-band multipath radar signal synthetic simulation environment and its working method |
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