CN103840899A - Automatic test device of transceiving assembly - Google Patents
Automatic test device of transceiving assembly Download PDFInfo
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- CN103840899A CN103840899A CN201410090054.1A CN201410090054A CN103840899A CN 103840899 A CN103840899 A CN 103840899A CN 201410090054 A CN201410090054 A CN 201410090054A CN 103840899 A CN103840899 A CN 103840899A
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Abstract
The invention relates to an automatic test device of a transceiving assembly and belongs to the technical field of test devices of a large planar array antenna transceiving assembly production line. The automatic test device is formed by a DDS signal source, a mixing assembly, a signal conversion board, a control panel, a computer and the like. The automatic test device is characterized in that two frequency converters of the DDS signal source are connected with an upper mixing device and a lower mixing device of the mixing assembly respectively, the output end of the lower mixing device is connected with the signal conversion board, and the output end of the signal conversion board is connected with the input end of the control panel connected with the computer through a network interface. By means of the automatic test device, all indexes can be measured by pressing one key, frequency points and electronic switches can be switched automatically, no manual cable connection is needed, and test results can be stored in real time for reuse. All the measurement results can be generated into an electronic report automatically with no need for manual recording, errors are avoided, and using times of a test instrument are reduced. The signal conversion board can sample signal amplitudes, phase positions and the like of all channels directly, when testing multiple groups of the transceiving assemblies, the instrument needs calibrating for one time every week, and therefore, working stability is good.
Description
Technical field
The present invention relates to a kind of transmitting-receiving subassembly automatic test equipment, belong to large planar array antenna transmitting-receiving subassembly production line testing equipment technical field.
Background technology
Transmitting-receiving subassembly is the indispensable vitals of large planar array antenna, and the quality of transmitting-receiving subassembly is directly connected to the quality of large planar array antenna service behaviour.Therefore, hundreds and thousands of transmitting-receiving subassemblies being tested one by one, is the work that manufacturing enterprise must complete.In traditional testing scheme, while detecting single transmitting-receiving subassembly, need to employ the multi-section instrument such as vector network analyzer, power meter, signal source, oscilloscope at every turn; And because transmitting-receiving subassembly has different characteristics at different frequency, therefore frequency of every switching, first will be by manually arranging, calibrate the parameter of good each instrument, record after result, by manually calculating corresponding correction data, then can adjust it through the fixed interface input of transmitting-receiving subassembly revising data again.This mode makes preliminary preparation amount large, and test, trimming process is very loaded down with trivial details.In real work, in order to test a transmitting-receiving subassembly, need to purchase interface cable and connector between a large amount of instrument and instrument and transmitting-receiving subassembly, operate very inconvenient, safeguard also very difficultly, increase cost of manufacture, have a strong impact on the demand of in enormous quantities, high-quality, high efficiency production transmitting-receiving subassembly.
Summary of the invention
The object of the invention is to, provide one to switch frequency by computer one key, test can be synchronizeed and carry out with calcuating correction value, and energy quick storage, input and round-off error in time, greatly reduce human intervention and instrument calibration number of times, adopt standard interface, realize high efficiency, in enormous quantities, high-quality accurate detection and correction, solve after prior art is tested front and test at every turn and must manually to multi-section instrument, calibration parameter be set one by one, and must manual calculations and input complete error correction, operation, troublesome maintenance, increase cost of manufacture problem, operation and maintenance is simple and convenient, long service life, effectively reduce the transmitting-receiving subassembly automatic test equipment of cost of manufacture.
The present invention realizes above-mentioned purpose by the following technical solutions
This transmitting-receiving subassembly automatic test equipment is made up of DDS signal source, mixer assembly, signal transducer, control board, computer, directional coupler W0～W4, electronic switch S1～S5, attenuator, it is characterized in that: DDS signal source comprises 50～90MHz frequency converter, 60～100MHz frequency converter, 16MHz intermediate-frequency channel, and it is connected with mixer assembly by low pass filter respectively; The control signal input of DDS signal source is connected to the control signal output Vdds of control board;
Mixer assembly comprises a upper frequency mixer U1, three down-conversion mixer U2～U4,360MHz local oscillator generator, if bandpas filter/intermediate frequency amplifier, radio frequency band filter/radio frequency amplifier; The local oscillation signal end V0 of upper frequency mixer U1 and the down-conversion mixer U2～U4 360MHz local oscillator generator that is connected in parallel; 60～100MHz frequency variation signal output of the signal input part V2 of down-conversion mixer U2～U4 and DDS signal source is connected in parallel; The signal input part of upper frequency mixer U1 is connected with 50～90MHz frequency variation signal output of DDS signal source by if bandpas filter/intermediate frequency amplifier, produces 410MHz～450 MHz radiofrequency signal; The signal output part of upper frequency mixer U1 is connected to directional coupler W0 by radio frequency band filter/radio frequency amplifier, and directional coupler W0 is connected with the radio-frequency (RF) signal input end V1 of down-conversion mixer U2 by feeder line, produces 10 MHz intermediate frequency reference signals by uppermixing; 60～100MHz frequency variation signal output of the signal input part V2 of down-conversion mixer U3 and down-conversion mixer U4 and DDS signal source is connected in parallel, and produces respectively that 10 MHz intermediate frequencies transmit, 10 MHz received IF signals by lower mixing; Directional coupler W0 is connected with calibration/pumping signal end and external measuring instrument respectively with electronic switch S5 by electronic switch S1; Calibration/pumping signal end is connected with transmitting-receiving subassembly; The control end of electronic switch S1～S5 is by the be connected in parallel control signal output of control board of wire, and electronic switch S4～S5 is connected in series; Electronic switch S4 is connected in parallel by four attenuators and directional coupler W1～W4, and is connected in parallel by directional coupler W1～W4 and transmitting-receiving subassembly; Electronic switch S2 is connected with the reception signal output part of transmitting-receiving subassembly; Electronic switch S3 is connected with the incoming signal output of directional coupler W1～W4;
The 10 MHz intermediate frequency reference signals of down-conversion mixer U2～U4,10 MHz intermediate frequencies transmit and are connected with the input of signal transducer respectively with 10 MHz received IF signal outputs, and the clock signal terminal of signal transducer is connected with the 16MHz clock signal output terminal of DDS signal source; The sampled signal output of signal transducer is connected with the input of control board; The control signal output of control board is connected with the control signal input of DDS signal source; Control board connects computer by RJ45 interface; Control board connects transmitting-receiving subassembly by RS422 signal conversion chip.
Described signal transducer comprises A/D change-over circuit, A/D circuit for switching between two clocks, FPGA programmable gate array chip, five BMA-JFD5G connectors, a CJ19T50WJ connector, a DAF15SLS connector; The input of A/D change-over circuit is connected with benchmark, transmitting, the receiving intermediate frequency signal output of three down-conversion mixer U2～U4 of mixer assembly respectively by BMA-JFD5G connector, backs up intermediate-freuqncy signal interface vacant; The output of A/D change-over circuit is connected to FPGA programmable gate array chip; 16MHz clock signal is connected with the input of A/D circuit for switching between two clocks by BMA-JFD5G connector, and the output of A/D circuit for switching between two clocks is connected to FPGA programmable gate array chip; The output of FPGA programmable gate array chip is leaded up to D/A change-over circuit connecting test mouth, and the CJ19T50WJ connector of separately leading up to is connected with the input of control board; FPGA programmable gate array chip is connected with DAF15SLS test jack.
Described control board comprises FPGA programmable gate array chip, PDS210 interface, lan network interface, RJ45 communication interface, EPCS memory, SDRAM memory, RS422 signal conversion chip, TTL chip, DB15 test interface, RS232, USB download interface; SPI signal, DDS control signal, clock signal and the A/D control signal end of FPGA programmable gate array chip are connected with the output of signal transducer by PDS210 interface; Be connected computer by lan network interface with RJ45 communication interface; Connect transmitting-receiving subassembly by RS422 signal conversion chip; Be connected with electronic switch S1～S5 by TTL chip; Connect DB15 test interface by RS232; Connect software burn writing equipment by USB download interface; FPGA programmable gate array chip is provided with EPCS memory and SDRAM memory.
The present invention's beneficial effect is compared with prior art
This transmitting-receiving subassembly automatic test equipment is by DDS signal source, mixer assembly, signal transducer, control board and computer, realize a key and measure whole indexs, automatic switchover frequency and electronic switch, in the time of different lane testing, without manual switching stube cable, in test, meet emergency case and can suspend test, saving result in real time, is beneficial to again and imports and use.All measurement results can generate electronic report forms automatically, without manual record, save human resources, avoid makeing mistakes, and greatly reduce test instrumentation use amount simultaneously, have saved cost.Can provide than the better signal source of instrument, each passage can independent filtering, amplification, and signal amplitude and phase place, pulse envelope etc. can pass through A/D signal transducer Direct Sampling, and no matter test how many transmitting-receiving subassemblies, all only needs within one week, calibrate once, good operating stability.Due to without manual measurement width phase frequency characteristic, calcuating correction value, connection and conveying data, the accident of effectively avoiding manual intervention to cause, therefore tests, revises error whole process more fast, accurately.Simple to operation.Before having solved well the each test of prior art and must manually to multi-section instrument, calibration parameter be set one by one after test, and must manual calculations and input complete error correction, operation, troublesome maintenance, the problem of increase cost of manufacture.
Brief description of the drawings
Accompanying drawing 1 is a kind of overall structure schematic diagram of transmitting-receiving subassembly automatic test equipment;
Accompanying drawing 2 is a kind of operation principle schematic diagram of signal transducer of transmitting-receiving subassembly automatic test equipment;
Accompanying drawing 3 is a kind of operation principle schematic diagram of control board of transmitting-receiving subassembly automatic test equipment;
Accompanying drawing 4 is a kind of operation principle schematic diagram of mixer assembly of transmitting-receiving subassembly automatic test equipment.
In figure: 1, DDS signal source, 2, mixer assembly, 3, signal transducer, 4, control board, 5, computer, 6, calibration/pumping signal end, 7, external measuring instrument, 8, transmitting-receiving subassembly, 9, the mouth of testing oneself.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described in detail:
This transmitting-receiving subassembly automatic test equipment is made up of DDS signal source 1, mixer assembly 2, signal transducer 3, control board 4, computer 5, directional coupler W0～W4, electronic switch S1～S5, attenuator, it is characterized in that: DDS signal source 1 comprises 50～90MHz frequency converter, 60～100MHz frequency converter, 16MHz intermediate-frequency channel, its three is connected with mixer assembly 2 by low pass filter respectively; The control signal input of DDS signal source 1 is connected to the control signal output Vdds of control board 4;
Mixer assembly 2 comprises a upper frequency mixer U1, three down-conversion mixer U2～U4,360MHz local oscillator generator, if bandpas filter/intermediate frequency amplifier, radio frequency band filter/radio frequency amplifier; The local oscillation signal end V0 of upper frequency mixer U1 and the down-conversion mixer U2～U4 360MHz local oscillator generator that is connected in parallel; 60～100MHz frequency variation signal output of the signal input part V2 of down-conversion mixer U2～U4 and DDS signal source 1 is connected in parallel; The signal input part of upper frequency mixer U1 is connected with 50～90MHz frequency variation signal output of DDS signal source 1 by if bandpas filter/intermediate frequency amplifier, produces 410MHz～450 MHz radiofrequency signal; The signal output part of upper frequency mixer U1 is connected to directional coupler W0 by radio frequency band filter/radio frequency amplifier, and directional coupler W0 is connected with the radio-frequency (RF) signal input end V1 of down-conversion mixer U2 by feeder line, produces 10 MHz intermediate frequency reference signals by uppermixing; 60～100MHz frequency variation signal output of the signal input part V2 of down-conversion mixer U3 and down-conversion mixer U4 and DDS signal source 1 is connected in parallel, and produces respectively that 10 MHz intermediate frequencies transmit, 10 MHz received IF signals by lower mixing; Directional coupler W0 is connected with calibration/pumping signal end 6 and external measuring instrument 7 respectively with electronic switch S5 by electronic switch S1; Calibration/pumping signal end 6 is connected with transmitting-receiving subassembly 8; The control end of electronic switch S1～S5 is by the be connected in parallel control signal output of control board 4 of wire, and electronic switch S4～S5 is connected in series; Electronic switch S4 is connected in parallel by four attenuators and directional coupler W1～W4, and is connected in parallel by directional coupler W1～W4 and transmitting-receiving subassembly 8; Electronic switch S2 is connected with the reception signal output part of transmitting-receiving subassembly 8; Electronic switch S3 is connected with the incoming signal output of directional coupler W1～W4;
The 10 MHz intermediate frequency reference signals of down-conversion mixer U2～U4,10 MHz intermediate frequencies transmit and are connected with the input of signal transducer 3 respectively with 10 MHz received IF signal outputs, and the clock signal terminal of signal transducer 3 is connected with the 16MHz clock signal output terminal of DDS signal source 1; The sampled signal output of signal transducer 3 is connected with the input of control board 4; The control signal output Vdds of control board 4 is connected with the control signal input of DDS signal source 1; Control board 4 connects computer 5 by RJ45 interface; Control board 4 connects transmitting-receiving subassembly 8 by RS422 signal conversion chip.
Described signal transducer 3 comprises A/D change-over circuit, A/D circuit for switching between two clocks, FPGA programmable gate array chip, five BMA-JFD5G connectors, a CJ19T50WJ connector, a DAF15SLS connector; The input of A/D change-over circuit is connected with benchmark, transmitting, the receiving intermediate frequency signal output of three down-conversion mixer U2～U4 of mixer assembly 2 respectively by BMA-JFD5G connector, backs up intermediate-freuqncy signal interface vacant; The output of A/D change-over circuit is connected to FPGA programmable gate array chip; 16MHz clock signal is connected with the input of A/D circuit for switching between two clocks by BMA-JFD5G connector, and the output of A/D circuit for switching between two clocks is connected to FPGA programmable gate array chip; The output of FPGA programmable gate array chip is leaded up to D/A change-over circuit connecting test mouth, produces self-checking signal, and the CJ19T50WJ connector of separately leading up to is connected with the input of control board 4; FPGA programmable gate array chip is connected with DAF15SLS test jack.
Described control board 4 comprises FPGA programmable gate array chip, PDS210 interface, lan network interface, RJ45 communication interface, EPCS memory, SDRAM memory, RS422 signal conversion chip, TTL chip, DB15 test interface, RS232, USB download interface; SPI signal, DDS control signal, clock signal and the A/D control signal end of FPGA programmable gate array chip are connected with the output of signal transducer 3 by PDS210 interface; Be connected computer 5 by lan network interface with RJ45 communication interface; Connect transmitting-receiving subassembly 8 by RS422 signal conversion chip; Be connected with electronic switch S1～S5 by TTL chip; Connect DB15 test interface by RS232; Connect software burn writing equipment by USB download interface; FPGA programmable gate array chip is provided with EPCS memory and SDRAM memory.(referring to accompanying drawing 1～4)
The core devices of the DDS signal source 1 of this transmitting-receiving subassembly automatic test equipment is AD9959, this device possesses four independently active output channels, can produce by this device of serial control interface control the intermediate-freuqncy signal of different frequency, can independently carry out frequency, phase place, amplitude control, channel isolation is greater than 65dB, has linear frequency phase amplitude scan capability and 16 level frequency plot amplitude modulation(PAM) abilities.With independently DAC audio frequency A/D converter of four full scale electric currents able to programme, the highest output frequency can reach 200MHz.When work, produce two-way frequency variation signal by DDS, be respectively 50MHz～90MHz and 60MHz～100MHz, this two paths of signals is delivered to respectively mixer assembly 2 after low pass filter.
Mixer assembly 2 comprises a upper frequency mixer U1, three down-conversion mixer U2～U4,360MHz local oscillator generator, if bandpas filter/intermediate frequency amplifier, radio frequency band filter/radio frequency amplifier; Wherein upper frequency mixer is mainly used to produce 410MHz～450 MHz radiofrequency signal.Down-conversion mixer U2 is for being mixed down 10MH intermediate frequency reference signal under the 410MHz～450 MHz radiofrequency signal of inputting by directional coupler WO and 60MHz～100 MHz frequency converter signal, 360MHz local oscillation signal.Down-conversion mixer U3～U4 is for being mixed down the transmitting of 10MH intermediate frequency, reception sampled signal through under the 410MHz～450 MHz radiofrequency signal of transmitting-receiving subassembly 8 and 60MHz～100 MHz frequency converter signal, 360MHz local oscillation signal.Radio frequency band filter/radio frequency amplifier is for carrying out filtering and amplification to 410MHz～450 MHz radiofrequency signal.If bandpas filter/intermediate frequency amplifier is for carrying out filtering and amplification to 50MHz～90MHz intermediate-freuqncy signal.
The effect of mixer assembly 2 mainly contains 3 points:
A, be that after up-conversion, to produce frequency by band pass filter be the benchmark pumping signal that 410MHz～450 MHz, signal amplitude are 10dBm to the fixing local oscillation signal of 50MHz～90MHz frequency variation signal that DDS signal source 1 is produced and 360MHz.
B, be that the frequency variation signal of 60～100MHz of producing with DDS signal source 1 of the radiofrequency signal that is 410MHz～450 MHz by frequency carries out lower mixing with the fixing local oscillation signal of 360MHz together with measured radio frequency signal, the intermediate-freuqncy signal that produces 10MHz is delivered to signal transducer 3 and samples, and the amplitude (peak-to-peak value) of this intermediate-freuqncy signal should be less than 2V.This intermediate-freuqncy signal comprises tested transmitting and tested reception signal.
Directional coupler W0～W4 is for separating of the entering of signal, reflected signal, according to the needs of measuring, by entering of producing after pumping signal input, measurement interface that reflected signal is sent to appointment.
Electronic switch S1～S5 is responsible for switching channel, transmitting-receiving subassembly 8 has multiple passages, when test because transmitted data amount is very large, data that can only a passage of single period measurement, switching between different passages just needs computer 5 to switch electronic switch S1～S5 according to the passage when pre-test, simultaneously, transmitting is also different with the signalling channel that receives measurement, also need computer 5 to send switching command according to the measuring condition of current selected, after being decoded by control board 4, switch electronic switch S1～S5, the trend of specification signal by TTL chip signal.
Attenuator is for decaying to pumping signal, because it is less that transmitting-receiving subassembly 8 receive paths can receive the amplitude of signal, mixer assembly 2 signal out also needs after by electronic switch S1～S5 through one-level decay just can deliver to transmitting-receiving subassembly 8 to test, to avoid damaging the receive path of transmitting-receiving subassembly 8.
It is that the FPGA programmable gate array chip of EP2S60F672I4N is as terminal data acquisition module that control board 4 adopts model, signals collecting, network communication configuration and the logic control of complete paired data memory circuit, DDS signal source 1, A/D signal transducer 3, and various triggering control.
Power supply: by connector CJ19T50WJ access digital power, for DDS signal source 1, mixer assembly 2, signal transducer 3, control board 4 etc. provide 5V or 28V operating voltage.
The course of work of this transmitting-receiving subassembly automatic test equipment is as follows:
When test, first by computer 5, transmitting-receiving subassembly 8 is placed in to transmitting or receives test mode, computer 5 sends instruction by network, and control board 4 receives that being decoded into RS422 signal after instruction is transmitted to transmitting-receiving subassembly 8.
When emission measurement, switch electronic switch S1 and S5 to transmitting path, switching electronic switch S3 selects a certain road of tested transmitting-receiving subassembly 8; When accepting state, switch electronic switch S1 and S5 to receiving path, switch electronic switch S2, S4 and select a certain road of tested transmitting-receiving subassembly 8, and select a Frequency point, control DDS signal by control board 4 and produce three intermediate-freuqncy signal 50MHz～90MHz, 60MHz～100MHz, 16MHz.
The fixing local oscillator of 50MHz～90MHz intermediate-freuqncy signal and 360MHz produces pumping signal after uppermixing, filtering, amplification, pumping signal is through directional coupler WO, produce a signal to lower mixer assembly U2, with together with the fixing local oscillation signal of 60MHz～100MHz, 360MHz, produce 10MHz intermediate-freuqncy signal through lower mixing, and this signal is delivered to signal transducer 3 benchmark Sampling Interfaces, after sampling, digital filtering, send i/q signal to control board 4, control board 4 converts the i/q signal of receiving to data, is transmitted through the network to computer 5.
When transmitting-receiving subassembly 8 radiating portions are measured, the fixing local oscillator of 50MHz～90MHz intermediate-freuqncy signal and 360MHz is through uppermixing, filtering, after amplifying, produce pumping signal 410MHz～450 MHz, pumping signal is delivered to the excitation input port of transmitting-receiving subassembly 8 after directional coupler WO and electronic switch S1, be amplified to 200W through transmitting-receiving subassembly 8 internal amplifiers, transmitting-receiving subassembly 8 being amplified to Hou tetra-tunnel pumping signals, to deliver to testing equipment power input port be directional coupler W1～W4 again, get directional coupler W1～W4Si road incoming signal and deliver to S3, according to the passage of the tested transmitting-receiving subassembly 8 of current selection send transmitting-receiving subassembly 8 wherein a road incoming signal to lower mixer assembly U4, with 60MHz～100MHz, the fixing local oscillator of 360MHz is mixed to 10MHz intermediate-freuqncy signal under warp together, and send signal transducer 3 to launch Sampling Interface this signal, through sampling, after digital filtering, send i/q signal to control board 4, control board 4 converts the i/q signal of receiving to data, be transmitted through the network to computer 5, computer 5 is by the data comparison of the data of receiving and reference measurement, after processing, obtain amplitude, phase place, edge before and after impulse waveform, the every launching target of top degradation.
Can be controlled S3 and switched the passage of tested transmitting-receiving subassembly 8 by computer 5 interfaces, by computer, 5 interface frequency choice box control DDS change frequencies.Automatically while test, a certain road test channel of selected transmitting-receiving subassembly 8, the frequency that can automatically switch, the every launching target under all frequencies of one-key operation is measured.
When transmitting-receiving subassembly 8 receiving units are measured, the fixing local oscillator of 50MHz～90MHz intermediate-freuqncy signal and 360MHz is through uppermixing, filtering, after amplifying, produce pumping signal 410MHz～450 MHz, pumping signal is through directional coupler WO and electronic switch S1, after S5 to electronic switch S4, switch pumping signal to this passage by the passage of the transmitting-receiving subassembly 8 of selecting, after attenuator and directional coupler, deliver to transmitting-receiving subassembly 8, the front end input interface of delivering to testing equipment in transmitting-receiving subassembly 8 inside after wide-band amplifier is electronic switch S2, according to the passage of the tested transmitting-receiving subassembly 8 of current selection send transmitting-receiving subassembly 8 wherein a road signal to down-conversion mixer U3, with 60MHz～100MHz, the fixing local oscillator of 360MHz produces 10MHz intermediate-freuqncy signal through lower mixing together, and this signal is sent to the reception Sampling Interface of signal transducer 3, through sampling, after digital filtering, send i/q signal to control board 4, control board 4 converts the i/q signal of receiving to data, be transmitted through the network to computer 5, computer 5 is by the data comparison of the data of receiving and reference measurement, after processing, gained, every reception index such as phase place, after processing, obtain amplitude, phase place, edge, impulse waveform front and back, the every launching target of top degradation.
By computer 5 Interface Control electronic switch S2, S4, switch the passage of tested transmitting-receiving subassembly 8, by computer, 5 interface frequency choice box control DDS change frequency.Automatically while test, a certain road test channel of selected transmitting-receiving subassembly 8, the frequency that can automatically switch, the every reception index measurement under all frequencies of one-key operation.
The above is the embodiment of this invention, above-mentioned not illustrating is construed as limiting flesh and blood of the present invention, person of an ordinary skill in the technical field is reading after this specification and can above-mentioned embodiment made an amendment or is out of shape, and does not deviate from the spirit and scope of the invention.
Claims (3)
1. a transmitting-receiving subassembly automatic test equipment, it is made up of DDS signal source (1), mixer assembly (2), signal transducer (3), control board (4), computer (5), directional coupler W0～W4, electronic switch S1～S5, attenuator, it is characterized in that: DDS signal source (1) comprises 50～90MHz frequency converter, 60～100MHz frequency converter, 16MHz intermediate-frequency channel, it is connected with mixer assembly (2) by low pass filter respectively; The control signal input of DDS signal source (1) is connected to the control signal output Vdds of control board (4);
Mixer assembly (2) comprises a upper frequency mixer U1, three down-conversion mixer U2～U4,360MHz local oscillator generator, if bandpas filter/intermediate frequency amplifier, radio frequency band filter/radio frequency amplifier; The local oscillation signal end V0 of upper frequency mixer U1 and the down-conversion mixer U2～U4 360MHz local oscillator generator that is connected in parallel; 60～100MHz frequency variation signal output of the signal input part V2 of down-conversion mixer U2～U4 and DDS signal source 1 is connected in parallel; The signal input part of upper frequency mixer U1 is connected with 50～90MHz frequency variation signal output of DDS signal source 1 by if bandpas filter/intermediate frequency amplifier, produces 410MHz～450 MHz radiofrequency signal; The signal output part of upper frequency mixer U1 is connected to directional coupler W0 by radio frequency band filter/radio frequency amplifier, and directional coupler W0 is connected with the radio-frequency (RF) signal input end V1 of down-conversion mixer U2 by feeder line, produces 10 MHz intermediate frequency reference signals by uppermixing; 60～100MHz frequency variation signal output of the signal input part V2 of down-conversion mixer U3 and down-conversion mixer U4 and DDS signal source 1 is connected in parallel, and produces respectively that 10 MHz intermediate frequencies transmit, 10 MHz received IF signals by lower mixing; Directional coupler W0 is connected with calibration/pumping signal end (6) and external measuring instrument (7) respectively with electronic switch S5 by electronic switch S1; Calibration/pumping signal end (6) is connected with transmitting-receiving subassembly (8); The control end of electronic switch S1～S5 is by the be connected in parallel control signal output of control board (4) of wire, and electronic switch S4～S5 is connected in series; Electronic switch S4 is connected in parallel by four attenuators and directional coupler W1～W4, and is connected in parallel by directional coupler W1～W4 and transmitting-receiving subassembly (8); Electronic switch S2 is connected with the reception signal output part of transmitting-receiving subassembly (8); Electronic switch S3 is connected with the incoming signal output of directional coupler W1～W4;
The 10 MHz intermediate frequency reference signals of down-conversion mixer U2～U4,10 MHz intermediate frequencies transmit and are connected with the input of signal transducer (3) respectively with 10 MHz received IF signal outputs, and the clock signal terminal of signal transducer (3) is connected with the 16MHz clock signal output terminal of DDS signal source (1); The sampled signal output of signal transducer (3) is connected with the input of control board (4); The control signal output of control board (4) is connected with the control signal input of DDS signal source (1); Control board (4) connects computer (5) by RJ45 interface; Control board (4) connects transmitting-receiving subassembly (8) by RS422 signal conversion chip.
2. a kind of transmitting-receiving subassembly automatic test equipment according to claim 1, is characterized in that: described signal transducer (3) comprises A/D change-over circuit, A/D circuit for switching between two clocks, FPGA programmable gate array chip, five BMA-JFD5G connectors, a CJ19T50WJ connector, a DAF15SLS connector; The input of A/D change-over circuit is connected with benchmark, transmitting, the receiving intermediate frequency signal output of three down-conversion mixer U2～U4 of mixer assembly (2) respectively by BMA-JFD5G connector, backs up intermediate-freuqncy signal interface vacant; The output of A/D change-over circuit is connected to FPGA programmable gate array chip; 16MHz clock signal is connected with the input of A/D circuit for switching between two clocks by BMA-JFD5G connector, and the output of A/D circuit for switching between two clocks is connected to FPGA programmable gate array chip; The output of FPGA programmable gate array chip is leaded up to D/A change-over circuit and is connected test oneself mouthful (9), and the CJ19T50WJ connector of separately leading up to is connected with the input of control board (4); FPGA programmable gate array chip is connected with DAF15SLS test jack.
3. a kind of transmitting-receiving subassembly automatic test equipment according to claim 1, is characterized in that: described control board (4) comprises FPGA programmable gate array chip, PDS210 interface, lan network interface, RJ45 communication interface, EPCS memory, SDRAM memory, RS422 signal conversion chip, TTL chip, DB15 test interface, RS232, USB download interface; SPI signal, DDS control signal, clock signal and the A/D control signal end of FPGA programmable gate array chip are connected with the output of signal transducer (3) by PDS210 interface; Be connected computer (5) with RJ45 communication interface by lan network interface; Connect transmitting-receiving subassembly (8) by RS422 signal conversion chip; Be connected with electronic switch S1～S5 by TTL chip; Connect DB15 test interface by RS232; Connect software burn writing equipment by USB download interface; FPGA programmable gate array chip is provided with EPCS memory and SDRAM memory.
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| CN109270385A (en) * | 2018-11-22 | 2019-01-25 | 伟创力电子技术(苏州)有限公司 | 5G receiving-transmitting module test system based on raspberry pie |
| CN110417490A (en) * | 2019-07-30 | 2019-11-05 | 中国人民解放军91550部队 | A kind of array channel calibration system and method based on FPGA |
| CN113259021A (en) * | 2021-04-30 | 2021-08-13 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Automatic receiving and dispatching testing device for portable aviation radio station |
| CN114553329A (en) * | 2022-04-26 | 2022-05-27 | 苏州华兴源创科技股份有限公司 | Vector network analysis system |
| CN117833953A (en) * | 2024-03-06 | 2024-04-05 | 上海安其威微电子科技有限公司 | Radio frequency circuit capable of detecting second harmonic, proportion acquisition method and detection method |
| CN117833953B (en) * | 2024-03-06 | 2024-05-28 | 上海安其威微电子科技有限公司 | Radio frequency circuit capable of detecting second harmonic, proportion acquisition method and detection method |
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