CN101738604B - Automatic test system for millimeter wave receiver - Google Patents
Automatic test system for millimeter wave receiver Download PDFInfo
- Publication number
- CN101738604B CN101738604B CN 200910243602 CN200910243602A CN101738604B CN 101738604 B CN101738604 B CN 101738604B CN 200910243602 CN200910243602 CN 200910243602 CN 200910243602 A CN200910243602 A CN 200910243602A CN 101738604 B CN101738604 B CN 101738604B
- Authority
- CN
- China
- Prior art keywords
- frequency
- test
- millimeter wave
- noise
- amplitude
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention provides an automatic test system for a millimeter wave receiver. The system realizes automatic test for a noise coefficient, an amplitude-frequency characteristic, a multi-channel phase consistency index of the millimeter wave receiver in a mode of frequency scanning. The system comprises a noise coefficient test sub-system, an amplitude-frequency characteristic test sub-system and a phase consistency test sub-system. Each of the three sub-systems comprises a main control computer for automatic control, and a GPIB data card. The amplitude-frequency characteristic test sub-system and the phase consistency test sub-system also comprise a millimeter wave frequency multiplication module for performing frequency multiplication on signals to an operating frequency of a test device. The automatic test system can completely realize the automatic test for the radio frequency index of the millimeter wave receiver by utilizing the conventional test device, solves the problem that the conventional millimeter wave test method and test device in China are absent, and overcomes the defects that a manual test wastes much time and energy, data points are less and the accuracy is low.
Description
Technical field
The present invention relates to the test macro at millimere-wave band, be specifically related to, the present invention relates to a kind of Auto-Test System for millimeter wave receiver.
Background technology
Millimeter wave receiver has obtained application more and more widely in fields such as communication, remote sensing, radars in recent years, and millimeter wave receiver need be tested indexs such as its noise figure, amplitude versus frequency characte, interchannel phase equalization usually, then test data is analyzed.
The automatic means of testing of present domestic millimeter wave relatively lacks, and on the one hand, the millimeter wave testing tool is quite expensive, and acquisition cost is very high concerning the user, and some millimeter wave frequency band lacks ready-made testing tool; On the other hand, millimeter wave is tested normally manual test at present, connects corresponding instrument and equipment under test respectively at each test event, tests the manual record test result by the guidance panel button.It is inapplicable when this manual test is big for tested receiver quantity, for example for synthetic aperture radiometer, tens of cover millimeter wave receivers are arranged, if do not realize test automation, the test meeting is quite loaded down with trivial details, waste time and energy and influence measuring accuracy, also can't carry out test data analysis automatically.
Therefore develop a kind of high-level efficiency, low cost, flexible configuration, expand to be applicable to that in the basic enterprising line frequency of microwave apparatus commonly used the Auto-Test System of various millimeter wave frequency band receivers just is very useful.
Summary of the invention
The object of the invention is, needs the Frequency point measured for overcoming to need when a plurality of millimeter wave receivers are measured manually to import respectively by the control interface, wastes time and energy, and causes survey frequency point less and influence measuring accuracy; Overcome problems such as some millimeter wave frequency band measuring equipment shortage simultaneously, thereby a kind of Auto-Test System for millimeter wave receiver is provided.
The Auto-Test System that is used for millimeter wave receiver proposed by the invention is tested branch systems such as subsystem, amplitude versus frequency characte test subsystem, phase equalization test subsystem and is formed by noise figure.
A kind of millimeter wave receiver method of testing, this method comprises: the step of noise figure test, the step of the step of amplitude versus frequency characte test and phase equalization test;
The step of described noise figure test specifically comprises:
11) input initial frequency, step frequency, termination frequency are inserted the noise figure analyser to initial frequency as current frequency, test and read noise figure;
12) add that with current frequency step frequency is as next Frequency point then, insert the noise figure analyser, test and read the noise figure of next Frequency point, so circulation, the noise figure of each Frequency point in the test frequency range successively, reach the termination frequency until frequency, withdraw from circulation this moment, each Frequency point noise figure test result in main control computer is preserved test frequency range;
The step of described amplitude versus frequency characte test specifically comprises:
21) ALC Mode in signalization source is millimeter wave spread spectrum source module pattern, initial frequency, step frequency, termination frequency are set then and import the frequency of two local oscillators, initial frequency is inserted signal source as current frequency, current frequency deducts two local frequencies and is IF-FRE, be set to the centre frequency of frequency spectrograph, frequency spectrograph Marker is set catches crest frequency, read the amplitude of the crest frequency of Marker indication;
22) add that with current frequency step frequency is as next Frequency point then, insert the corresponding frequency values of the new Frequency point of signal source and frequency spectrograph, the amplitude of same next Frequency point of test, so circulation, the amplitude-frequency response of each Frequency point in the test frequency range successively, reach the termination frequency until frequency, withdraw from circulation this moment, the amplitude-versus-frequency curve in main control computer shows test frequency range is also preserved test result;
The step of described phase frequency uniformity test specifically comprises:
31) oscillograph and signal source parameter are set earlier, the ALC Mode in signalization source is millimeter wave spread spectrum source module pattern, initial frequency, step frequency, termination frequency are set then and import the frequency of two local oscillators, initial frequency is inserted signal source as current frequency, the oscillograph trigger mode is set for triggering automatically, average, maximal value and minimum value that oscillograph reads two channel phases are set;
32) add that with current frequency step frequency is as next Frequency point then, insert signal source, the phase place of same next Frequency point of test, so circulation, the phase differential of each Frequency point in test frequency range response successively, reach the termination frequency until frequency, withdraw from circulation this moment, the phase difference characteristics curve in main control computer shows test frequency range is also preserved test result.
The step of described noise figure test further comprises: the step of noise figure analyser calibration specifically comprises:
The excess noise ratio parameter of input millimeter wave noise source arranges parameters such as test pattern, test frequency, local frequency, sideband, input calibration-gain again, calibrates then.
A kind of automatic test system for millimeter wave receiver, comprise: the testing apparatus of the testing apparatus of noise figure test subsystem, amplitude versus frequency characte test subsystem and the testing apparatus of phase equalization test subsystem, it is characterized in that, also comprise at noise figure test subsystem, amplitude versus frequency characte test subsystem or phase equalization test subsystem automatic testing control module separately, described automatic testing control module all comprises:
Main control computer is for the test data of storage noise figure, amplitude versus frequency characte or phase equalization; Be used for arranging the test frequency point of noise figure, amplitude versus frequency characte or phase equalization; Also be used for according to noise figure, amplitude versus frequency characte or phase-frequency characteristic separately described method of testing finish the testing process of relevant parameter automatically; And by the GPIB control card, the steering order of transmitted noise coefficient, amplitude versus frequency characte or phase-frequency characteristic makes the corresponding total line traffic control noise figure of card, amplitude versus frequency characte or the test of phase-frequency characteristic testing tool and read test data.
Described control card uses the GPIB control card.
Described amplitude versus frequency characte test subsystem and phase equalization test subsystem, can also arrange and be connected with signal source for signal spread-spectrum to be measured millimeter wave times frequency module to the working frequency range of testing apparatus, the output signal of described millimeter wave times frequency module is carried out power control through the ALC loop.
Described noise figure test subsystem specifically comprises:
The noise figure analyser is used for receiving the test frequency point that main control computer sets, and carries out the noise figure test;
The millimeter wave noise source, for generation of the noise by pulse signal control and known excess noise ratio parameter, this noise drives Devices to test (millimeter wave receiver) and carries out the noise figure test;
The noise testing frequency converter is used for the noise of Devices to test (millimeter wave receiver) output is downconverted to the frequency range that the noise figure analyser is suitable for, so that the noise figure analyser can carry out correct measurement;
Signal source is finished the required local oscillation signal of frequency down-conversion function for generation of the noise testing frequency converter;
Main control computer and GPIB control card, be used for input initial frequency, step frequency, termination frequency, as current frequency, utilize initial frequency the bus of GPIB card control that current frequency is inserted noise figure analyser test noise coefficient, and the noise figure value that obtains of read test; Current frequency is added that step frequency is as next Frequency point, utilize the bus of GPIB card control to insert the noise figure analyser again, so circulation reaches the termination frequency until frequency, withdraw from circulation this moment, each Frequency point noise figure test result in main control computer is preserved test frequency range.
Described amplitude versus frequency characte test subsystem specifically comprises:
Signal source is used for frequency and power that the reception main control computer arranges, produces output signal and drives millimeter wave times frequency module, and control the power of the millimeter-wave signal of millimeter wave times frequency module output by the ALC function;
Millimeter wave times frequency module, the millimeter wave band that the signal frequency multiplication that is used for that signal source is exported uses to the millimeter wave receiver of testing as test signal input millimeter wave receiver, carries out the test of amplitude versus frequency characte;
Attenuator is used for the power attenuation of millimeter wave test signal that millimeter wave times frequency module is produced to being applicable in the power bracket that millimeter wave receiver is tested;
Frequency spectrograph, for the Frequency point that catches the amplitude peak correspondence, and the amplitude of reading this peak value;
Main control computer and GPIB control card are used for that initial frequency, step frequency, termination frequency are set and import the frequency of two local oscillators, and initial frequency is inserted signal source as current frequency; The ALC Mode in signalization source is millimeter wave frequency multiplication source module pattern; Current frequency deducts two local frequencies and is IF-FRE, and the centre frequency of frequency spectrograph is set to this IF-FRE; The control frequency spectrograph catches crest frequency and reads the amplitude of crest frequency; Current frequency adds that step frequency is as next Frequency point, utilize the bus of GPIB card control to insert the new corresponding frequency values of Frequency point of signal source and frequency spectrograph, the amplitude of same next Frequency point of test, so circulation, the amplitude-frequency response of each Frequency point in the test frequency range successively, reach the termination frequency until frequency, withdraw from circulation this moment, the amplitude-versus-frequency curve in main control computer shows test frequency range is also preserved test result.
Described phase frequency uniformity test subsystem specifically comprises:
Signal source is used for frequency and power that the reception main control computer arranges, produces output signal and drives millimeter wave times frequency module, and control the power of the millimeter-wave signal of millimeter wave times frequency module output by the ALC function;
Millimeter wave times frequency module, the millimeter wave band that the signal frequency multiplication that is used for that signal source is exported uses to the millimeter wave receiver of testing as test signal input millimeter wave receiver, carries out the test of phase equalization;
Attenuator is used for the power attenuation of millimeter wave test signal that millimeter wave times frequency module is produced to being applicable in the power bracket that millimeter wave receiver is tested;
Oscillograph is for average and the maximal value of the phase differential of testing hyperchannel millimeter wave receiver output signal, i.e. the interchannel phase equalization index of millimeter wave receiver;
Millimeter wave receiver is Devices to test;
Main control computer and GPIB control card are used for that initial frequency, step frequency, termination frequency are set and import the frequency of two local oscillators, and initial frequency is inserted signal source as current frequency; Main control computer, add that with current frequency step frequency is as next Frequency point, utilize the bus of GPIB card control to insert signal source, the phase place of same next Frequency point of test, so circulation, the phase differential of each Frequency point in test frequency range response successively reaches the termination frequency until frequency, withdraw from circulation this moment, the phase difference characteristics curve in main control computer shows test frequency range is also preserved test result.
The invention has the advantages that, utilize the millimeter wave Auto-Test System to control the automatic test that testing apparatus is finished the multifrequency point correlated performance automatically, improve measuring accuracy and speed, simultaneously can realize performance test in the broad frequency range more by the millimeter wave times frequency module of this system.
Description of drawings
Fig. 1 constitutes the block diagram that the noise figure test subsystem calibration system of the Auto-Test System for millimeter wave receiver of the present invention is formed;
Fig. 2 constitutes the block diagram that the noise figure test subsystem of the Auto-Test System for millimeter wave receiver of the present invention is formed;
Fig. 3 constitutes the block diagram that the passage amplitude versus frequency characte test subsystem of the Auto-Test System for millimeter wave receiver of the present invention is formed;
Fig. 4 constitutes the block diagram that the phase equalization test subsystem of the Auto-Test System for millimeter wave receiver of the present invention is formed;
Fig. 5 is that the software that constitutes the Auto-Test System for millimeter wave receiver of the present invention is formed diagram;
Fig. 6 is the noise figure analyser calibration procedure process flow diagram that constitutes the Auto-Test System for millimeter wave receiver of the present invention;
Fig. 7 is the noise figure subsystem test program flow diagram that constitutes the Auto-Test System for millimeter wave receiver of the present invention;
Fig. 8 is the passage amplitude versus frequency characte test flow chart that constitutes the Auto-Test System for millimeter wave receiver of the present invention;
Fig. 9 is the phase equalization test flow chart that constitutes the Auto-Test System for millimeter wave receiver of the present invention;
The accompanying drawing sign:
1, main control computer 2, GPIB control card 3, noise figure analyser
4, noise testing frequency converter 5, signal source 6, millimeter wave noise source
7, correcting device 8, millimeter wave front end 9, millimeter wave spread spectrum source module
10, millimeter wave receiver 11, frequency spectrograph 12, dual channel oscilloscope.
Embodiment
Below in conjunction with accompanying drawing and concrete enforcement the Auto-Test System for millimeter wave receiver of the present invention is described in detail.
The framework of noise figure test subsystem is made up of main control computer 1, GPIB control card 2, testing apparatus 8, noise figure analyser 3, noise figure test frequency converter 4, signal source 5, millimeter wave noise source 6 as shown in Figure 2; Test is divided into the calibration of noise figure analyser and two parts of noise figure test; Noise figure index in order to test and preservation millimeter wave receiver front end.
The framework of amplitude versus frequency characte test subsystem is made up of main control computer 1, GBIP control card 2, equipment under test 10, signal source 5, millimeter wave spread spectrum source module 9, frequency spectrograph 11 as shown in Figure 3; Amplitude versus frequency characte index in order to test and record millimeter wave receiver.
The framework of phase equalization test subsystem is made up of main control computer 1, GPIB control card 2, equipment under test, signal source 5, millimeter wave spread spectrum module 9, oscillograph 12 as shown in Figure 4; Interchannel phase equalization index in order to test and record millimeter wave receiver.
Being tested branch systems such as subsystem, amplitude versus frequency characte test subsystem, phase equalization test subsystem by noise figure for the Auto-Test System of millimeter wave receiver forms.Each subsystem by testing apparatus, testing tool, test control section and testing software automatically and form.Automatically the test control section is made up of main control computer and GPIB control card, and the user uses the testing software that moves on the main control computer, by the GPIB control card, uses gpib bus operational testing instrument, reads and preserve test data.
As shown in Figure 5, be that the software that constitutes the Auto-Test System for millimeter wave receiver of the present invention is formed diagram, mainly formed by bottom layer driving software (GPIB control card driving etc.), operating system (windows operating system), graphical programming software Labview, each application software (comprising noise figure testing software, amplitude versus frequency characte testing software, phase equalization testing software) and user interface; Each testing software cooperates with each test subsystem, and the user can finish the test of each test subsystem by the user interface of each testing software.The soft ware autonomous programming of each application software for being correlated with at the present invention, remainder is the windows operating system of standard or the standard driver that related standards equipment carries.
Among the present invention, the test procedure that operates on the main control computer passes through the GPIB control card, uses operation and the read test data of gpib bus control testing tool.Can replace the panel button operation directly by instruction control testing tool by the user interface of software that operates on the main control computer, replace manually reading by gpib bus read test result simultaneously; Each test event has satisfied the test request of millimeter wave receiver substantially.
Noise figure test subsystem is in order to the noise figure index of test and record millimeter wave receiver front end.Fig. 2 constitutes the block diagram that the noise figure test subsystem of the Auto-Test System for millimeter wave receiver of the present invention is formed, and Fig. 7 is the noise figure test flow chart that constitutes the Auto-Test System for millimeter wave receiver of the present invention.As shown in Figure 2, noise figure test subsystem partly comprises noise figure analyser, noise testing frequency converter, millimeter wave noise source, signal source and testing apparatus (millimeter wave front end), main control computer and GPIB control card.Wherein noise figure analyser, noise testing frequency converter, signal source, millimeter wave noise source are testing tool, noise testing frequency converter and signal source are used for the output signal of millimeter wave receiver front end is down-converted in the frequency range of noise figure analyser, gpib bus is for connecting the system bus of testing tool, in order to control signal source and the synchronous scanning of noise figure analyser, carry out the test of noise figure in the frequency band.Main control computer by the GBIP bus arrange instrument parameter and read, logging test results.The noise figure test is divided into two steps: carry out the calibration of noise figure analyser earlier, carry out the test of noise figure again.Calibration is at first built system as Fig. 1 SONOAN calibration system block diagram, excess noise ratio parameter (ENR) by user interface input millimeter wave noise source, parameters such as test pattern, test frequency, local frequency (signal source frequency), sideband, input calibration-gain are set again, calibrate then, as shown in Figure 6; Just can the test noise coefficient after calibration is finished, survey the system block diagram of setting up departments as Fig. 2 noise figure and build system, by user interface input initial frequency, step frequency, stop frequency, initial frequency is inserted the noise figure analyser as current frequency, test is also read noise figure, add that with current frequency step frequency is as next Frequency point then, insert the noise figure analyser, test and read the noise figure of next Frequency point, so circulation, the noise figure of each Frequency point in the test frequency range successively, reach the termination frequency until frequency, withdraw from circulation this moment, each Frequency point noise figure test result in main control computer is preserved test frequency range, as shown in Figure 7.
The framework of amplitude versus frequency characte test subsystem as shown in Figure 3, in order to the amplitude versus frequency characte index of test and record millimeter wave receiver.Fig. 3 is the block diagram of forming for the amplitude versus frequency characte test subsystem of the Auto-Test System of millimeter wave receiver, and Fig. 8 is the amplitude versus frequency characte test flow chart for the Auto-Test System of millimeter wave receiver.As Fig. 3, shown in Figure 8, amplitude versus frequency characte test subsystem partly comprises signal source, millimeter wave times frequency module, attenuator, frequency spectrograph, testing apparatus (millimeter wave receiver), main control computer and GPIB control card.The amplitude versus frequency characte test philosophy is: signal source is exported a certain microwave frequency test signal, millimeter wave times frequency module becomes this signal frequency multiplication the millimeter-wave signal of test usefulness to the millimeter wave frequency band of required test, signal source is accurately controlled the power of this millimeter wave test signal by the ALC loop, equipment under test (millimeter wave receiver) is exported after this millimeter-wave signal is down-converted to intermediate-freuqncy signal, use frequency spectrograph to test the power of this intermediate-freuqncy signal, can obtain the gain of equipment under test (millimeter wave receiver) on this millimeter-wave frequency; Change the signal source output signal frequency, can obtain the gain of equipment under test (millimeter wave receiver) on another frequency; Like this, amplitude-frequency test subsystem uses gpib bus control signal source to carry out frequency sweeping from low to high, control the power of frequency spectrograph synchronism detection record equipment under test (millimeter wave receiver) output intermediate-freuqncy signal simultaneously, can obtain the gain of equipment under test (millimeter wave receiver) each Frequency point in required millimeter wave frequency band, i.e. the amplitude-frequency characteristic of millimeter wave receiver.The specific implementation process is as follows: build the amplitude versus frequency characte test macro as Fig. 3, frequency spectrograph and signal source parameter are set earlier, the ALC Mode in signalization source is millimeter wave frequency multiplication template pattern, initial frequency is set then, step frequency, stop frequency and import the frequency of two local oscillators, initial frequency is inserted signal source as current frequency, current frequency deducts two local frequencies and is IF-FRE, be set to the centre frequency of frequency spectrograph, frequency spectrograph Marker is set catches crest frequency, read the amplitude of the crest frequency of Marker indication, add that with current frequency step frequency is as next Frequency point then, insert the corresponding frequency values of the new Frequency point of signal source and frequency spectrograph, the amplitude of same next Frequency point of test, so circulation, the amplitude-frequency response of each Frequency point in the test frequency range reaches the termination frequency until frequency successively, withdraw from circulation this moment, the amplitude-versus-frequency curve in main control computer shows test frequency range is also preserved test result.
Phase equalization test subsystem is in order to the phase equalization index of test and record hyperchannel millimeter wave receiver.Fig. 4 is the block diagram of forming for the phase equalization test subsystem of the Auto-Test System of millimeter wave receiver, and Fig. 9 is the phase equalization test flow chart for the Auto-Test System of millimeter wave receiver.As Fig. 4, shown in Figure 9, phase-frequency characteristic test subsystem partly comprises signal source, millimeter wave frequency multiplication source module, attenuator, oscillograph, testing apparatus (millimeter wave receiver), main control computer and GPIB control card.The phase equalization test philosophy is: signal source is exported a certain microwave frequency test signal, millimeter wave times frequency module becomes this signal frequency multiplication the millimeter-wave signal of test usefulness to the millimeter wave frequency band of required test, signal source is accurately controlled the power of this millimeter wave test signal by the ALC loop, this millimeter wave test signal input equipment under test (millimeter wave receiver), use dual channel oscilloscope to test the phase differential of two passage intermediate-freuqncy signals, namely obtain the phase differential of millimeter wave receiver two passages on this millimeter-wave frequency; Change the signal source output signal frequency, can obtain the phase differential of millimeter wave receiver two passages on another frequency; Like this, phase equalization test subsystem uses gpib bus control signal source to carry out frequency sweeping from low to high, control the phase differential of dual channel oscilloscope synchronism detection record equipment under test (millimeter wave receiver) output intermediate-freuqncy signal simultaneously, can obtain the phase differential of equipment under test (millimeter wave receiver) each Frequency point in required millimeter wave frequency band, i.e. the phase equalization index of millimeter wave receiver.The specific implementation process is as follows: build the phase-frequency characteristic test macro as Fig. 4, oscillograph and signal source parameter are set earlier, the ALC Mode in signalization source is millimeter wave frequency multiplication source module pattern, initial frequency is set then, step frequency, stop frequency and import the frequency of two local oscillators, initial frequency is inserted signal source as current frequency, the oscillograph trigger mode is set for triggering automatically, the average that oscillograph reads two channel phases is set, maximal value and minimum value, add that with current frequency step frequency is as next Frequency point then, insert signal source, the phase place of same next Frequency point of test, so circulation, the phase differential of each Frequency point in test frequency range response successively reaches the termination frequency until frequency, withdraw from circulation this moment, the phase difference characteristics curve in main control computer shows test frequency range is also preserved test result.
It should be noted last that above embodiment is only unrestricted in order to technical scheme of the present invention to be described.Although the present invention has been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (3)
1. millimeter wave receiver method of testing, this method comprises: the step of noise figure test, the step of the step of amplitude versus frequency characte test and phase equalization test;
The step of described noise figure test specifically comprises:
11) input initial frequency, step frequency, termination frequency are inserted the noise figure analyser to initial frequency as current frequency, test and read noise figure;
12) add that with current frequency step frequency is as next Frequency point then, insert the noise figure analyser, test and read the noise figure of next Frequency point, so circulation, the noise figure of each Frequency point in the test frequency range successively, reach the termination frequency until frequency, withdraw from circulation this moment, each Frequency point noise figure test result in main control computer is preserved test frequency range;
The step of described amplitude versus frequency characte test specifically comprises:
21) ALC Mode in signalization source is millimeter wave spread spectrum source module pattern, initial frequency, step frequency, termination frequency are set then and import the frequency of two local oscillators, initial frequency is inserted signal source as current frequency, current frequency deducts two local frequencies and is IF-FRE, be set to the centre frequency of frequency spectrograph, frequency spectrograph Marker is set catches crest frequency, read the amplitude of the crest frequency of Marker indication;
22) add that with current frequency step frequency is as next Frequency point then, insert the corresponding frequency values of the new Frequency point of signal source and frequency spectrograph, the amplitude of same next Frequency point of test, so circulation, the amplitude-frequency response of each Frequency point in the test frequency range successively, reach the termination frequency until frequency, withdraw from circulation this moment, the amplitude-versus-frequency curve in main control computer shows test frequency range is also preserved test result;
The step of described phase equalization test specifically comprises:
31) oscillograph and signal source parameter are set earlier, the ALC Mode in signalization source is millimeter wave spread spectrum source module pattern, initial frequency, step frequency, termination frequency are set then and import the frequency of two local oscillators, initial frequency is inserted signal source as current frequency, the oscillograph trigger mode is set for triggering automatically, average, maximal value and minimum value that oscillograph reads two channel phases are set;
32) add that with current frequency step frequency is as next Frequency point then, insert signal source, the phase place of same next Frequency point of test, so circulation, the phase differential of each Frequency point in test frequency range response successively, reach the termination frequency until frequency, withdraw from circulation this moment, the phase difference characteristics curve in main control computer shows test frequency range is also preserved test result.
2. millimeter wave receiver method of testing according to claim 1 is characterized in that, the step of described noise figure test further comprises: the step of noise figure analyser calibration specifically comprises:
The excess noise ratio parameter of input millimeter wave noise source arranges test pattern, test frequency, local frequency, sideband, input calibration-gain parameter again, calibrates then.
3. automatic test system for millimeter wave receiver, comprise: the testing apparatus of noise figure test subsystem, the testing apparatus of the testing apparatus of amplitude versus frequency characte test subsystem and phase equalization test subsystem, described noise figure test subsystem comprises: the noise figure analyser, the millimeter wave noise source, noise testing frequency converter and signal source, described amplitude versus frequency characte test subsystem comprises: signal source, millimeter wave times frequency module, attenuator and frequency spectrograph, described phase equalization test subsystem comprises: signal source, millimeter wave times frequency module, attenuator and oscillograph, it is characterized in that, also comprise at noise figure test subsystem, amplitude versus frequency characte test subsystem or phase equalization test subsystem automatic testing control module separately, described automatic testing control module all comprises:
Main control computer is for the test data of storage noise figure, amplitude versus frequency characte or phase equalization; Be used for arranging the test frequency point of noise figure, amplitude versus frequency characte or phase equalization; Also be used for finishing automatically according to noise figure, amplitude versus frequency characte or phase-frequency characteristic method of testing separately the testing process of relevant parameter; With
And by the GPIB control card, the steering order of transmitted noise coefficient, amplitude versus frequency characte or phase-frequency characteristic makes the corresponding total line traffic control noise figure of card, amplitude versus frequency characte or the test of phase-frequency characteristic testing tool and read test data;
Described amplitude versus frequency characte test subsystem and phase equalization test subsystem, also setting is connected with signal source for the millimeter wave times frequency module that signal spread-spectrum to be measured is arrived the working frequency range of testing apparatus, and the output signal of described millimeter wave times frequency module is carried out power control through the ALC loop;
Described noise figure test subsystem specifically comprises:
The noise figure analyser is used for receiving the test frequency point that main control computer sets, and carries out the noise figure test;
The millimeter wave noise source, for generation of the noise by pulse signal control and known excess noise ratio parameter, this noise drives millimeter wave receiver and carries out the noise figure test;
The noise testing frequency converter is used for the noise of millimeter wave receiver output is downconverted to the frequency range that the noise figure analyser is suitable for, so that the noise figure analyser can carry out correct measurement;
Signal source is finished the required local oscillation signal of frequency down-conversion function for generation of the noise testing frequency converter;
Main control computer and GPIB control card, be used for input initial frequency, step frequency, termination frequency, as current frequency, utilize initial frequency the bus of GPIB card control that current frequency is inserted noise figure analyser test noise coefficient, and the noise figure value that obtains of read test; Current frequency is added that step frequency is as next Frequency point, utilize the bus of GPIB card control to insert the noise figure analyser again, so circulation reaches the termination frequency until frequency, withdraw from circulation this moment, each Frequency point noise figure test result in main control computer is preserved test frequency range;
Described amplitude versus frequency characte test subsystem specifically comprises:
Signal source is used for frequency and power that the reception main control computer arranges, produces output signal and drives millimeter wave times frequency module, and control the power of the millimeter-wave signal of millimeter wave times frequency module output by the ALC function;
Millimeter wave times frequency module, the millimeter wave band that the signal frequency multiplication that is used for that signal source is exported uses to the millimeter wave receiver of testing as test signal input millimeter wave receiver, carries out the test of amplitude versus frequency characte;
Attenuator is used for the power attenuation of millimeter wave test signal that millimeter wave times frequency module is produced to being applicable in the power bracket that millimeter wave receiver is tested;
Frequency spectrograph, for the Frequency point that catches the amplitude peak correspondence, and the amplitude of reading this peak value;
Main control computer and GPIB control card are used for that initial frequency, step frequency, termination frequency are set and import the frequency of two local oscillators, and initial frequency is inserted signal source as current frequency; The ALC Mode in signalization source is millimeter wave frequency multiplication source module pattern; Current frequency deducts two local frequencies and is IF-FRE, and the centre frequency of frequency spectrograph is set to this IF-FRE; The control frequency spectrograph catches crest frequency and reads the amplitude of crest frequency; Current frequency adds that step frequency is as next Frequency point, utilize the bus of GPIB card control to insert the new corresponding frequency values of Frequency point of signal source and frequency spectrograph, the amplitude of same next Frequency point of test, so circulation, the amplitude-frequency response of each Frequency point in the test frequency range successively, reach the termination frequency until frequency, withdraw from circulation this moment, the amplitude-versus-frequency curve in main control computer shows test frequency range is also preserved test result;
Described phase equalization test subsystem specifically comprises:
Signal source is used for frequency and power that the reception main control computer arranges, produces output signal and drives millimeter wave times frequency module, and control the power of the millimeter-wave signal of millimeter wave times frequency module output by the ALC function;
Millimeter wave times frequency module, the millimeter wave band that the signal frequency multiplication that is used for that signal source is exported uses to the millimeter wave receiver of testing as test signal input millimeter wave receiver, carries out the test of phase equalization;
Attenuator is used for the power attenuation of millimeter wave test signal that millimeter wave times frequency module is produced to being applicable in the power bracket that millimeter wave receiver is tested;
Oscillograph is for average and the maximal value of the phase differential of testing hyperchannel millimeter wave receiver output signal, i.e. the interchannel phase equalization index of millimeter wave receiver;
Main control computer and GPIB control card are used for that initial frequency, step frequency, termination frequency are set and import the frequency of two local oscillators, and initial frequency is inserted signal source as current frequency; Main control computer, add that with current frequency step frequency is as next Frequency point, utilize the bus of GPIB card control to insert signal source, the phase place of same next Frequency point of test, so circulation, the phase differential of each Frequency point in test frequency range response successively reaches the termination frequency until frequency, withdraw from circulation this moment, the phase difference characteristics curve in main control computer shows test frequency range is also preserved test result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910243602 CN101738604B (en) | 2009-12-18 | 2009-12-18 | Automatic test system for millimeter wave receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910243602 CN101738604B (en) | 2009-12-18 | 2009-12-18 | Automatic test system for millimeter wave receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101738604A CN101738604A (en) | 2010-06-16 |
| CN101738604B true CN101738604B (en) | 2013-08-21 |
Family
ID=42462325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910243602 Expired - Fee Related CN101738604B (en) | 2009-12-18 | 2009-12-18 | Automatic test system for millimeter wave receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101738604B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075261A (en) * | 2010-11-18 | 2011-05-25 | 四川九洲电器集团有限责任公司 | Method and system for automatically testing millimeter-wave front end |
| CN102207545B (en) * | 2011-05-26 | 2013-06-19 | 中国科学院上海微系统与信息技术研究所 | Automatic testing method and system for transmission characteristic of microwave/millimeter wave vector modulator |
| CN102323531B (en) * | 2011-05-26 | 2013-11-27 | 中国科学院上海微系统与信息技术研究所 | Method for automatically testing parameters of millimeter wave power amplifier and system |
| CN102307070B (en) * | 2011-05-26 | 2013-11-27 | 中国科学院上海微系统与信息技术研究所 | Automatic testing system and testing method for non-contact transmission characteristics of millimeter waveband |
| CN102540154A (en) * | 2011-12-29 | 2012-07-04 | 陶东香 | Missile guidance signal simulation device for radar warning equipment test |
| CN102809723A (en) * | 2012-05-22 | 2012-12-05 | 湖北东光电子股份有限公司 | Automatic communication interface circuit module amplitude-frequency characteristic measuring system |
| CN103220053B (en) * | 2013-04-15 | 2015-02-18 | 西北工业大学 | Gain control index testing method of radio frequency receiver |
| CN103957063B (en) * | 2014-04-10 | 2016-03-09 | 贵州航天天马机电科技有限公司 | A kind of ultra short wave communication Device-General receiver test system and method for testing thereof |
| CN103986538A (en) * | 2014-06-03 | 2014-08-13 | 上海航天电子通讯设备研究所 | X-frequency-band noise coefficient automatic test system and method with LAN interface |
| CN104459591B (en) * | 2014-10-29 | 2017-02-22 | 北京遥感设备研究所 | Automatic testing device of direct detection type radiometer |
| CN106771687B (en) * | 2016-12-22 | 2023-11-24 | 深圳市华讯方舟卫星产业科技有限公司 | Device and method for testing noise of microwave product after CAP assembly |
| CN106998234B (en) * | 2017-02-17 | 2021-01-08 | 加特兰微电子科技(上海)有限公司 | Test system, classification system and test method |
| CN106932659B (en) * | 2017-03-21 | 2019-04-26 | 成都雷电微力科技有限公司 | A kind of test method based on multichannel composite noise coefficient |
| CN108055091A (en) * | 2017-11-24 | 2018-05-18 | 中科院杭州射频识别技术研发中心 | A kind of millimeter wave self calibration virtual instrument and its implementation |
| CN109617633B (en) * | 2018-12-19 | 2021-05-07 | 北京无线电计量测试研究所 | Millimeter wave attenuation measurement system and method |
| CN109508511B (en) * | 2018-12-24 | 2023-06-23 | 中国航空工业集团公司西安飞机设计研究所 | Frequency sweeping method in frequency response analysis and measurement |
| CN110515020B (en) * | 2019-08-12 | 2021-08-13 | 中电科仪器仪表有限公司 | Optimal linear gain calibration compensation method for receiving channel of noise coefficient analyzer |
| CN112666504A (en) * | 2020-12-01 | 2021-04-16 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Portable detection equipment of digital instantaneous frequency measurement receiver |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7002511B1 (en) * | 2005-03-02 | 2006-02-21 | Xytrans, Inc. | Millimeter wave pulsed radar system |
| CN101251573A (en) * | 2008-02-29 | 2008-08-27 | 东南大学 | Automatic testing method for mixer third order inter-modulation distortion of radio-frequency tuner chip |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432695C (en) * | 2005-04-27 | 2008-11-12 | 南京大学 | Integrated measuring systme for radar receiver |
-
2009
- 2009-12-18 CN CN 200910243602 patent/CN101738604B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7002511B1 (en) * | 2005-03-02 | 2006-02-21 | Xytrans, Inc. | Millimeter wave pulsed radar system |
| CN101251573A (en) * | 2008-02-29 | 2008-08-27 | 东南大学 | Automatic testing method for mixer third order inter-modulation distortion of radio-frequency tuner chip |
Non-Patent Citations (2)
| Title |
|---|
| 孔德才等.机载W波段毫米波辐射计扫描成像研究.《遥感学报》.2004,第8卷(第4期),第362-269页. * |
| 李靖等.星载W波段毫米波辐射计研究.《遥感技术与应用》.2002,第17卷(第1期),第1-7页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101738604A (en) | 2010-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101738604B (en) | Automatic test system for millimeter wave receiver | |
| CN109307859B (en) | TR subassembly amplitude phase characteristic quick microwave test system | |
| CN102680826B (en) | A kind of method utilizing vector network analyzer to realize the test of embedded local oscillator frequency converter | |
| CN106027170B (en) | The digital miniaturization radio equipment automatic testing equipment of one kind and system | |
| CN102752061B (en) | Device and method for generating reference signal of phase-locked amplifier of millimeter wave attenuation measurement system | |
| CN208597083U (en) | A kind of simple X-band Network Analyzer | |
| CN110572223B (en) | Calibration method of radio frequency baseband integrated terminal automatic test system | |
| CN103234534A (en) | Method for testing sensitivity of airplane radio compass receiver | |
| CN102857303A (en) | Method and device for generating test signals of radio remote unit (RRU) | |
| CN108387911B (en) | GPS test system | |
| CN106443122A (en) | Broadband large dynamic signal high-precision measurement device and method | |
| US20220276329A1 (en) | Intelligent instrument verification system and method | |
| CN106788786B (en) | Standardized satellite radio frequency index testing system | |
| CN110221261B (en) | Radar waveform generation module test analysis method and device | |
| CN203798907U (en) | Multi-channel broadband microwave radiometer with self-calibration function | |
| CN103532601B (en) | The interference detection method of multi-antenna TDD system and device | |
| CN101072075A (en) | Device and method for testing radio frequency interference between wireless communication systems | |
| CN105024770B (en) | Quantitative testing for sensitivity of a non-coherent FMCW autodyne receiver | |
| CN105321313B (en) | The harvester of precipitation is measured for double frequency, multi-frequency microwave link and based on the measurement method of this harvester | |
| CN109343014B (en) | Apparatus and method for testing T/R component of phased array radar | |
| CN105425060B (en) | A kind of interference detection method and detecting system of antenna coupling | |
| CN101344548A (en) | Measuring method for intermodulation sensitiveness of antenna terminal | |
| CN105425220B (en) | A kind of digital T/R components transmitting-receiving conversion and reception cloth phase Method Of Time Measurement | |
| CN107835057B (en) | Hardware performance test system and method of frequency hopping receiving system | |
| CN101572907B (en) | Time switch template test method for TD-SCDMA terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| 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: 20130821 Termination date: 20191218 |