CN104122442A - Millimeter wave free oscillation source automatic test system and method - Google Patents
Millimeter wave free oscillation source automatic test system and method Download PDFInfo
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- CN104122442A CN104122442A CN201410354326.4A CN201410354326A CN104122442A CN 104122442 A CN104122442 A CN 104122442A CN 201410354326 A CN201410354326 A CN 201410354326A CN 104122442 A CN104122442 A CN 104122442A
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Abstract
The invention provides a millimeter wave free oscillation source automatic test system and method. The system at least comprises a millimeter wave free oscillation source to be tested, a direct current voltage source connected with the millimeter wave free oscillation source to be tested, a directional coupler with an input port connected onto the millimeter wave free oscillation source to be measured, an attenuator connected onto a coupling output port of the directional coupler, a mixer connected with the attenuator, a frequency analyzer connected onto the mixer, a power sensor connected onto a direct through output port of the directional coupler and a power meter connected onto the power sensor. Synchronous test of multiple performance parameters of the millimeter wave free oscillation source can be achieved through single connection, test data can be stored synchronously to facilitate follow-up processing, and automatic test of output frequency, output power and direct current power consumption of the millimeter wave free oscillation source in full band can be achieved.
Description
Technical field
The present invention relates to millimeter wave technical field of measurement and test, particularly relate to a kind of millimeter wave free oscillation source automatic test macro and method of testing.
Background technology
Millimeter wave has good atmosphere through characteristic and abundant frequency spectrum resource, in fields such as communication, guidance, radar, clinical medicine, is significant and application prospect.Millimeter wave free oscillation source is millimeter-wave communication system core, and the quality of its output frequency, phase noise, the linearity and tuning characteristic concerns the performance of whole communication system.
The automatic means of testing of current domestic millimeter wave lacks: millimere-wave band testing tool cost is high on the one hand, and some millimeter wave frequency band lacks ready-made T & M instrument; Current test manual test normally on the other hand, to the test in millimeter wave free oscillation source, need to repeatedly connect test step by step, be all operated and needed manual record data by guidance panel button, test very loaded down with trivial details and precision is not high, follow-up data processing is also pretty troublesome.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of millimeter wave free oscillation source automatic test macro and method of testing, by single, connect and just can realize a plurality of performance parameter synchronism detections in millimeter wave free oscillation source, and can synchronously preserve test data so that subsequent treatment, the problem means of testing in millimeter wave free oscillation source and testing apparatus being lacked for solving prior art.
For achieving the above object and other relevant objects, the invention provides a kind of millimeter wave free oscillation source automatic test macro, wherein, described millimeter wave free oscillation source automatic test macro at least comprises:
Millimeter wave free oscillation to be measured source, for generation of millimeter-wave signal to be measured;
Direct voltage source, is connected in described millimeter wave free oscillation to be measured source, for the tuning voltage for the supply voltage of its steady operation and the millimeter-wave signal to be measured of its generation different frequency of control and power to the input of described millimeter wave free oscillation to be measured source;
Directional coupler, its input port is connected in described millimeter wave free oscillation to be measured source, for described millimeter-wave signal to be measured is split into two-way millimeter-wave signal to be measured; Wherein, first via millimeter-wave signal to be measured is exported by the coupling output port of described directional coupler, and the second tunnel millimeter-wave signal to be measured is exported by the straight-through output port of described directional coupler;
Attenuator, is connected in the coupling output port of described directional coupler, for the first via millimeter-wave signal to be measured of the coupling output port output by described directional coupler is carried out exporting after power attenuation;
Frequency mixer, is connected in described attenuator, for the millimeter-wave signal mixing to be measured of the first via after power attenuation is exported;
Spectrum analyzer, is connected in described frequency mixer, for the millimeter-wave signal to be measured of the first via to after mixing, carries out spectrum analysis, catches the frequency of described first via millimeter-wave signal to be measured, to complete the output frequency test to described millimeter wave free oscillation to be measured source;
Power sensor, is connected in the straight-through output port of described directional coupler, for being DC signal output by the power transfer of the second tunnel millimeter-wave signal to be measured of the straight-through output port output by described directional coupler;
Power meter, is connected in described power sensor, for detection of described direct current signal, to complete the output power test to described millimeter wave free oscillation to be measured source.
Preferably, described millimeter wave free oscillation source automatic test macro also comprises:
Gpib bus, for connecting described direct voltage source, described spectrum analyzer and described power meter;
GPIB-USB control card, be connected in described gpib bus, for the relevant parameter having arranged being inserted respectively to described direct voltage source, described spectrum analyzer and described power meter by described gpib bus, and by described gpib bus, from described direct voltage source, described spectrum analyzer and described power meter, obtain respectively output frequency and the output power test data in the operating voltage in described millimeter wave free oscillation to be measured source and testing current data, described millimeter wave free oscillation to be measured source;
Main control computer, be connected in described GPIB-USB control card, for the parameter of described direct voltage source, described spectrum analyzer and described power meter is set respectively, trigger described direct voltage source, described spectrum analyzer and described power meter, read and show each test data, and each test data is managed, preserved and processes.
Preferably, the parameter of described direct voltage source at least comprises: the starting potential of described tuning voltage, final voltage and step-length; The parameter of described spectrum analyzer at least comprises: centre frequency, frequency step, bandwidth, resolution bandwidth and video bandwidth; The parameter of described power meter at least comprises: the correction card corresponding with the power sensor of selected applicable described millimeter-wave signal frequency range to be measured.
Preferably, described millimeter wave free oscillation to be measured source is voltage controlled oscillator, or the frequency multiplier consisting of with the control loop being connected with described voltage controlled oscillator voltage controlled oscillator.
The present invention also provides a kind of millimeter wave free oscillation source method of testing that adopts millimeter wave free oscillation source automatic test macro as above, and wherein, described millimeter wave free oscillation source method of testing at least comprises:
Step S1, by described direct voltage source, to the input of millimeter wave free oscillation to be measured source, supply the supply voltage of its steady operation and control the tuning voltage that it produces the millimeter-wave signal to be measured of different frequency and power, by described millimeter wave free oscillation to be measured source, being produced the millimeter-wave signal to be measured of the current voltage control that is subject to described tuning voltage;
Step S2, splits into two-way millimeter-wave signal to be measured by directional coupler by described millimeter-wave signal to be measured; Wherein, first via millimeter-wave signal to be measured is exported by the coupling output port of described directional coupler, and the second tunnel millimeter-wave signal to be measured is exported by the straight-through output port of described directional coupler;
Step S3, by attenuator, the first via millimeter-wave signal to be measured of the coupling output port output by described directional coupler is carried out exporting after power attenuation, by frequency mixer, the millimeter-wave signal mixing to be measured of the first via after power attenuation is exported, first via millimeter-wave signal to be measured by spectrum analyzer after to mixing carries out spectrum analysis, catch the frequency of described first via millimeter-wave signal to be measured, to complete the output frequency test to described millimeter wave free oscillation to be measured source;
Step S4, by power sensor, by the power transfer of the second tunnel millimeter-wave signal to be measured of the straight-through output port output by described directional coupler, be DC signal output, by described power meter, detect described direct current signal, to complete the output power test to described millimeter wave free oscillation to be measured source.
Preferably, before described step S1, described millimeter wave free oscillation source method of testing also comprises:
Step S0, the parameter of direct voltage source, spectrum analyzer and power meter is set respectively by main control computer, by GPIB-USB control card, by gpib bus, the relevant parameter having arranged is inserted respectively in described direct voltage source, described spectrum analyzer and described power meter, then by main control computer, trigger described direct voltage source, described spectrum analyzer and described power meter.
Preferably, described step S0 at least comprises the steps:
Step S01, starting potential, final voltage and the step-length of the tuning voltage of described direct voltage source are set according to test frequency range demand by described main control computer, by GPIB-USB control card, by gpib bus, the relevant parameter of described direct voltage source are inserted in described direct voltage source; Wherein, described tuning voltage is suitable for from starting potential, being progressively increased to final voltage according to its step-length, to control described millimeter wave free oscillation to be measured source, produce the millimeter-wave signal to be measured of different frequency and power, thereby make described millimeter wave free oscillation to be measured source there is the corresponding output frequency of change in voltage scope and the output power range with described tuning voltage;
Step S02, initial describedization spectrum analyzer, centre frequency, frequency step, bandwidth, resolution bandwidth and the video bandwidth of described spectrum analyzer are set by described main control computer, by GPIB-USB control card, by gpib bus, the relevant parameter of described spectrum analyzer are inserted in described spectrum analyzer;
Step S03, according to the applicable power sensor of described millimeter-wave signal Frequency Band Selection to be measured, the correction card corresponding with selected power sensor of described power meter is set by main control computer, by GPIB-USB control card, by gpib bus, the relevant parameter of described power meter inserted in described power meter;
Step S04, triggers described direct voltage source, described spectrum analyzer and described power meter by main control computer.
Preferably, described step S3 at least comprises the steps:
Step S31, is undertaken the first via millimeter-wave signal to be measured of the coupling output port output by described directional coupler to export after power attenuation by attenuator;
Step S32, is exported the millimeter-wave signal mixing to be measured of the first via after power attenuation by frequency mixer;
Step S33, the first via millimeter-wave signal to be measured by spectrum analyzer after to mixing carries out spectrum analysis for the first time, and catches for the first time the frequency of described first via millimeter-wave signal to be measured;
Step S34, in other parameters, arrange constant in the situation that, centre frequency, bandwidth, resolution bandwidth and the video bandwidth of described spectrum analyzer are set according to the frequency of the described first via millimeter-wave signal to be measured capturing for the first time again by main control computer, first via millimeter-wave signal to be measured by described spectrum analyzer after to mixing carries out spectrum analysis for the second time, and catch for the second time the frequency of described first via millimeter-wave signal to be measured, to complete the output frequency test to described millimeter wave free oscillation to be measured source;
Wherein, the bandwidth of the described spectrum analyzer again being arranged by main control computer is less than the bandwidth of the described spectrum analyzer being arranged first by main control computer, and the frequency of the described first via millimeter-wave signal to be measured capturing is for the second time the output frequency test data in described millimeter wave free oscillation to be measured source.
Preferably, after described step S4, described millimeter wave free oscillation source method of testing also comprises:
Step S5, by GPIB-USB control card by gpib bus from described direct voltage source, in described spectrum analyzer and described power meter, obtain respectively operating voltage and the testing current data in described millimeter wave free oscillation to be measured source, the power test data of the frequency test data of described first via millimeter-wave signal to be measured and described the second tunnel millimeter-wave signal to be measured, by main control computer, read and show each test data, and each test data is managed, preserve and process, thereby can record reference frequency output and the output power range in the described to be measured millimeter wave free oscillation source corresponding with the change in voltage scope of described tuning voltage.
Preferably, after described step S5, described millimeter wave free oscillation source method of testing also comprises:
Step S6, according to operating voltage and the testing current data in described millimeter wave free oscillation to be measured source, calculates the DC power in described millimeter wave free oscillation to be measured source by main control computer; Wherein, the DC power in described millimeter wave free oscillation to be measured source is the operating voltage in described millimeter wave free oscillation to be measured source and the product of testing current data.
Preferably, described millimeter wave free oscillation to be measured source is voltage controlled oscillator, or the frequency multiplier consisting of with the control loop being connected with described voltage controlled oscillator voltage controlled oscillator.
As mentioned above, millimeter wave free oscillation source automatic test macro of the present invention and method of testing, there is following beneficial effect: the present invention has designed millimeter wave free oscillation source automatic testing apparatus and method of testing, can connect and just can realize a plurality of performance parameter synchronism detections in millimeter wave free oscillation source by single, and can synchronously preserve test data so that subsequent treatment, realized the automatic test to millimeter wave free oscillation source, overcome traditional-handwork testing efficiency low, low precision, nonsynchronous shortcoming, can realize millimeter wave free oscillation source output frequency in millimeter wave full frequency band, output power, the automatic test of DC power.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation of the millimeter wave free oscillation source automatic test macro of first embodiment of the invention.
Fig. 2 is shown as the schematic flow sheet of the millimeter wave free oscillation source method of testing of second embodiment of the invention.
Element numbers explanation
1 millimeter wave free oscillation to be measured source
2 direct voltage sources
3 directional couplers
4 attenuators
5 frequency mixer
6 spectrum analyzers
7 power sensors
8 power meters
9 gpib bus
10 GPIB-USB control cards
11 main control computers
S0～S6 step
Embodiment
Below, by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this instructions.The present invention can also be implemented or be applied by other different embodiment, and the every details in this instructions also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present invention.
Refer to Fig. 1, first embodiment of the invention relates to a kind of millimeter wave free oscillation source automatic test macro.It should be noted that, the diagram providing in present embodiment only illustrates basic conception of the present invention in a schematic way, satisfy and only show with assembly relevant in the present invention in graphic but not component count, shape and size drafting while implementing according to reality, during its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
The millimeter wave free oscillation source automatic test macro of present embodiment at least comprises:
Millimeter wave free oscillation to be measured source 1, for generation of millimeter-wave signal to be measured.
Direct voltage source 2, is connected in millimeter wave free oscillation to be measured source 1, for to millimeter wave free oscillation to be measured source, 1 input supplies the supply voltage of its steady operation and controls the tuning voltage that it produces the millimeter-wave signal to be measured of different frequency and power.Supply voltage can be realized the stable supplying to millimeter wave free oscillation to be measured source 1 direct current biasing.The control that millimeter wave free oscillation to be measured source 1 is subject to the current voltage of tuning voltage can produce the corresponding millimeter-wave signal to be measured of current voltage with tuning voltage.
Directional coupler 3, its input port is connected in millimeter wave free oscillation to be measured source 1, for millimeter-wave signal to be measured being split into two-way millimeter-wave signal to be measured; Wherein, first via millimeter-wave signal to be measured is exported by the coupling output port of directional coupler 3, and the second tunnel millimeter-wave signal to be measured is exported by the straight-through output port of directional coupler 3.Millimeter-wave signal to be measured is directed coupling mechanism 3 " shunting ", wherein, by millimeter-wave signal to be measured being carried out to " sampling ", (degree of coupling of directional coupler 3 is 10dB left and right to first via millimeter-wave signal to be measured (the coupling output port output signal of directional coupler 3), can ignore the loss of signal), be somebody's turn to do " sampling " signal using the input signal as attenuator 4; And the second tunnel millimeter-wave signal to be measured (the straight-through output port output signal of directional coupler 3) is in the ideal case by the harmless output realizing millimeter-wave signal to be measured, as the input signal of power sensor 7.
Attenuator 4, is connected in the coupling output port of directional coupler 3, for the first via millimeter-wave signal to be measured of the coupling output port output by directional coupler 3 is carried out exporting after power attenuation.Attenuator 4 in present embodiment is a kind of accurate variable attenuators 4, can realize the first via millimeter-wave signal to be measured of the coupling output port output of directional coupler 3 is carried out to suitable power attenuation, the first via millimeter-wave signal to be measured after power attenuation is as the input signal of frequency mixer 5.Attenuator 4 can prevent that the power input of frequency mixer 5 from surpassing frequency mixer 5 and can bear the bare maximum of power input, and for example, the damping capacity of attenuator 4 be-20dB, and frequency mixer 5 maximums can be born power input and are-10dBm.
Frequency mixer 5, is connected in attenuator 4, for the millimeter-wave signal mixing to be measured of the first via after power attenuation is exported.In fact, the first via millimeter-wave signal to be measured after power attenuation is an incoming frequency of frequency mixer 5, and frequency mixer 5 is connected with spectrum analyzer 6, the direct local frequency of received spectrum analyser 6, another incoming frequency using it as frequency mixer 5.Frequency mixer 5, by these two incoming frequency multiplications and by being input to after linear combination in spectrum analyzer 6, just can be realized the spectrum analysis to millimeter-wave signal to be measured again.In present embodiment, frequency mixer 5 adopts harmonic mixer 5, only needs spectrum analyzer 6 to provide lower local frequency can realize the mixer output signal of enough spectrum analyses.
Spectrum analyzer 6, is connected in frequency mixer 5, for the millimeter-wave signal to be measured of the first via to after mixing, carries out spectrum analysis, catches the frequency of first via millimeter-wave signal to be measured, to complete the output frequency test to millimeter wave free oscillation to be measured source 1.The local frequency temporal evolution of spectrum analyzer 6 and changing, when local frequency scans in time, has just demonstrated the frequency spectrum of the first via millimeter-wave signal to be measured after mixing on the screen of spectrum analyzer 6.The frequency that can catch first via millimeter-wave signal to be measured from the frequency spectrum showing, this frequency is the output frequency test data in millimeter wave free oscillation to be measured source 1.
Power sensor 7, is connected in the straight-through output port of directional coupler 3, for being DC signal output by the power transfer of the second tunnel millimeter-wave signal to be measured of the straight-through output port output by directional coupler 3.
Power meter 8, is connected in power sensor 7, for detection of direct current signal, to complete the output power test to millimeter wave free oscillation to be measured source 1.Power meter 8 and power sensor 7 are metering outfits of describing specially the amount of transfer of energy properties when millimeter-wave signal is big or small passes through electronic system or transmission line with millimeter-wave signal.Power sensor 7 can be used as the probe of power meter 8, straight-through output port by directional coupler 3 can be can't harm to the power of the millimeter-wave signal to be measured of output in the ideal case, be converted to the direct current signal that can directly detect for power meter 8, this testing result is the output power test data in millimeter wave free oscillation to be measured source 1.
In the present embodiment, millimeter wave free oscillation source automatic test macro also comprises:
Gpib bus 9, for connecting direct voltage source 2, spectrum analyzer 6 and power meter 8.
GPIB-USB control card 10, be connected in gpib bus 9, for the relevant parameter having arranged being inserted respectively to direct voltage source 2, spectrum analyzer 6 and power meter 8 by gpib bus 9, and by gpib bus 9, from direct voltage source 2, spectrum analyzer 6 and power meter 8, obtain respectively output frequency and the output power test data in the operating voltage in millimeter wave free oscillation to be measured source 1 and testing current data, millimeter wave free oscillation to be measured source 1.
Main control computer 11, be connected in GPIB-USB control card 10, for the parameter of direct voltage source 2, spectrum analyzer 6 and power meter 8 is set respectively, trigger direct voltage source 2, spectrum analyzer 6 and power meter 8, read and show each test data, and each test data is managed, preserved and processes.
GPIB-USB control card 10 can be used by gpib bus 9 controllers using any main control computer 11 with USB port as plug and play, and can control at most 14 GPIB instruments able to programme.Main control computer 11 is as human-computer interaction terminal, by carry out test procedure can realize to millimeter wave free oscillation to be measured source 1 automatically test, fault diagnosis, test data are processed, storage, analyze, transmission, and show in a suitable manner or output test data.
Wherein, the parameter of direct voltage source 2 at least comprises: the starting potential of tuning voltage, final voltage and step-length; The parameter of spectrum analyzer 6 at least comprises: centre frequency, frequency step, bandwidth, resolution bandwidth and video bandwidth; The parameter of power meter 8 at least comprises: the correction card corresponding with the power sensor of selected applicable millimeter-wave signal frequency range to be measured.The frequency range of different millimeter-wave signals to be measured adopts different power sensors to carry out power detection, and correction card corresponding to different power sensors, for example, correction card comprises W8486A, V8486A, 8487A etc.In power meter, store a plurality of correction cards of corresponding a plurality of power sensors, can adopt main control computer that the current correction card of power meter is set, this current correction card is corresponding with the power sensor of selected applicable millimeter-wave signal frequency range to be measured, then adopt GPIB-USB control card 10 by gpib bus 9, the relevant parameter of power meter 8 to be inserted in power meter 8, during power meter 8 work, just apply the correction card corresponding with selected power sensor 7.
For millimeter wave free oscillation to be measured source 1, only need to suitably configure above-mentioned each parameter, just go for the testing requirement in the millimeter wave free oscillation source of each frequency range, thereby realized the automatic test of millimeter wave free oscillation source output frequency in millimeter wave full frequency band, output power, DC power.
Millimeter wave free oscillation to be measured source 1 is voltage controlled oscillator, or the frequency multiplier consisting of with the control loop being connected with voltage controlled oscillator voltage controlled oscillator.For example, the W wave band frequency multiplier of millimeter wave free oscillation to be measured source 1 for being formed with the control loop being connected with voltage controlled oscillator by voltage controlled oscillator, after receiving the tuning voltage of direct voltage source 2 inputs, the control that W wave band frequency multiplier is subject to tuning voltage produces W wave band millimeter-wave signal to be measured, and its output frequency f0 is 4 times of incoming frequency f1.
The second embodiment of the present invention relates to a kind of millimeter wave free oscillation source method of testing, adopts the millimeter wave free oscillation source automatic test macro of the first embodiment to test.As shown in Figure 2, millimeter wave free oscillation source method of testing at least comprises idiographic flow:
Step S1, by direct voltage source 2, to millimeter wave free oscillation to be measured source, 1 input supplies the supply voltage of its steady operation and controls the tuning voltage that it produces the millimeter-wave signal to be measured of different frequency and power, is produced the millimeter-wave signal to be measured of the current voltage control that is subject to tuning voltage by millimeter wave free oscillation to be measured source 1.
Step S2, splits into two-way millimeter-wave signal to be measured by directional coupler 3 by millimeter-wave signal to be measured; Wherein, first via millimeter-wave signal to be measured is exported by the coupling output port of directional coupler 3, and the second tunnel millimeter-wave signal to be measured is exported by the straight-through output port of directional coupler 3.
Step S3, by attenuator 4, the first via millimeter-wave signal to be measured of the coupling output port output by directional coupler 3 is carried out exporting after power attenuation, by frequency mixer 5, the millimeter-wave signal mixing to be measured of the first via after power attenuation is exported, by the first via millimeter-wave signal to be measured after 6 pairs of mixing of spectrum analyzer, carry out spectrum analysis, catch the frequency of first via millimeter-wave signal to be measured, to complete the output frequency test to millimeter wave free oscillation to be measured source 1.
Step S4, by power sensor 7, by the power transfer of the second tunnel millimeter-wave signal to be measured of the straight-through output port output by directional coupler 3, be DC signal output, by power meter 8, detect direct current signal, to complete the output power test to millimeter wave free oscillation to be measured source 1.
In the present embodiment, before step S1, millimeter wave free oscillation source method of testing also comprises:
Step S0, the parameter of direct voltage source 2, spectrum analyzer 6 and power meter 8 is set respectively by main control computer 11, by GPIB-USB control card 10, by gpib bus 9, the relevant parameter having arranged is inserted respectively in direct voltage source 2, spectrum analyzer 6 and power meter 8, then by main control computer 11, trigger direct voltage source 2, spectrum analyzer 6 and power meter 8.
Preferably, step S0 at least comprises the steps:
Step S01, starting potential, final voltage and the step-length of the tuning voltage of direct voltage source 2 are set according to test frequency range demand by main control computer 11, by GPIB-USB control card 10, by gpib bus 9, the relevant parameter of direct voltage source 2 are inserted in direct voltage source 2; Wherein, tuning voltage is suitable for from starting potential, being progressively increased to final voltage according to its step-length, to control millimeter wave free oscillation to be measured source 1, produce the millimeter-wave signal to be measured of different frequency and power, thereby make millimeter wave free oscillation to be measured source 1 there is the corresponding output frequency of change in voltage scope and the output power range with tuning voltage.
Step S02, initialization spectrum analyzer 6, centre frequency, frequency step, bandwidth, resolution bandwidth and the video bandwidth of spectrum analyzer 6 are set by main control computer 11, by GPIB-USB control card 10, by gpib bus 9, the relevant parameter of spectrum analyzer 6 are inserted in spectrum analyzer 6.
Step S03, according to the applicable power sensor 7 of millimeter-wave signal Frequency Band Selection to be measured, the correction card corresponding with selected power sensor 7 of power meter 8 is set by main control computer 11, by GPIB-USB control card, by gpib bus, the relevant parameter of power meter inserted in power meter.
Step S04, triggers direct voltage source 2, spectrum analyzer 6 and power meter 8 by main control computer 11.
Preferably, step S3 at least comprises the steps:
Step S31, is undertaken the first via millimeter-wave signal to be measured of the coupling output port output by directional coupler 3 to export after power attenuation by attenuator 4.
Step S32, is exported the millimeter-wave signal mixing to be measured of the first via after power attenuation by frequency mixer 5.
Step S33, carries out spectrum analysis for the first time by the first via millimeter-wave signal to be measured after 6 pairs of mixing of spectrum analyzer, and catches for the first time the frequency of first via millimeter-wave signal to be measured.
Step S34, in other parameters, arrange constant in the situation that, centre frequency, bandwidth, resolution bandwidth and the video bandwidth of spectrum analyzer 6 are set according to the frequency of the first via millimeter-wave signal to be measured capturing for the first time again by main control computer 11, by the first via millimeter-wave signal to be measured after 6 pairs of mixing of spectrum analyzer, carry out spectrum analysis for the second time, and catch for the second time the frequency of first via millimeter-wave signal to be measured, to complete the output frequency test to millimeter wave free oscillation to be measured source 1.
Wherein, the bandwidth of the spectrum analyzer 6 again being arranged by main control computer 11 is less than the bandwidth of the spectrum analyzer 6 being arranged first by main control computer 11, and the frequency of the first via millimeter-wave signal to be measured capturing is for the second time the output frequency test data in millimeter wave free oscillation to be measured source 1.
In the present embodiment, after step S4, millimeter wave free oscillation source method of testing also comprises:
Step S5, by GPIB-USB control card 10, pass through gpib bus 9 from direct voltage source 2, in spectrum analyzer 6 and power meter 8, obtain respectively operating voltage and the testing current data in millimeter wave free oscillation to be measured source 1, the power test data of the frequency test data of first via millimeter-wave signal to be measured and the second tunnel millimeter-wave signal to be measured, by main control computer 11, read and show each test data, and each test data is managed, preserve and process, thereby can record reference frequency output and the output power range in the to be measured millimeter wave free oscillation source 1 corresponding with the change in voltage scope of tuning voltage.
In the present embodiment, after step S5, millimeter wave free oscillation source method of testing also comprises:
Step S6, according to operating voltage and the testing current data in millimeter wave free oscillation to be measured source 1, calculates the DC power in millimeter wave free oscillation to be measured source 1 by main control computer 11; Wherein, the DC power in millimeter wave free oscillation to be measured source 1 is the operating voltage in millimeter wave free oscillation to be measured source 1 and the product of testing current data.
The step of the whole bag of tricks is divided above, just in order being described clearly, can to merge into a step or some step is split while realizing, and is decomposed into a plurality of steps, as long as comprise identical logical relation, all in the protection domain of this patent; To adding inessential modification in algorithm or in flow process or introducing inessential design, but the core design that does not change its algorithm and flow process is all in the protection domain of this patent.
Preferably, millimeter wave free oscillation to be measured source 1 is voltage controlled oscillator, or the frequency multiplier consisting of with the control loop being connected with voltage controlled oscillator voltage controlled oscillator.
The method of testing of present embodiment is connected and just can be realized a plurality of performance parameters in millimeter wave free oscillation source by single, as the synchronism detection of output frequency, output power and DC power, and can synchronously preserve test data so that subsequent treatment, realized the automatic test to millimeter wave free oscillation source, overcome that traditional-handwork testing efficiency is low, low precision, nonsynchronous shortcoming, also can realize the automatic test of a plurality of performance parameters in millimeter wave free oscillation source in millimeter wave full frequency band.
Be not difficult to find, present embodiment is the method embodiment corresponding with the first embodiment, present embodiment can with the enforcement of working in coordination of the first embodiment.The correlation technique details of mentioning in the first embodiment is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in present embodiment also can be applicable in the first embodiment.
In sum, millimeter wave free oscillation source automatic test macro of the present invention and method of testing, millimeter wave free oscillation source automatic testing apparatus and method of testing are provided, can connect and just can realize a plurality of performance parameter synchronism detections in millimeter wave free oscillation source by single, and can synchronously preserve test data so that subsequent treatment, realized the automatic test to millimeter wave free oscillation source, overcome traditional-handwork testing efficiency low, low precision, nonsynchronous shortcoming, can realize millimeter wave free oscillation source output frequency in millimeter wave full frequency band, output power, the automatic test of DC power.So the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-mentioned embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-mentioned embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (11)
1. a millimeter wave free oscillation source automatic test macro, is characterized in that, described millimeter wave free oscillation source automatic test macro at least comprises:
Millimeter wave free oscillation to be measured source, for generation of millimeter-wave signal to be measured;
Direct voltage source, is connected in described millimeter wave free oscillation to be measured source, for the tuning voltage for the supply voltage of its steady operation and the millimeter-wave signal to be measured of its generation different frequency of control and power to the input of described millimeter wave free oscillation to be measured source;
Directional coupler, its input port is connected in described millimeter wave free oscillation to be measured source, for described millimeter-wave signal to be measured is split into two-way millimeter-wave signal to be measured; Wherein, first via millimeter-wave signal to be measured is exported by the coupling output port of described directional coupler, and the second tunnel millimeter-wave signal to be measured is exported by the straight-through output port of described directional coupler;
Attenuator, is connected in the coupling output port of described directional coupler, for the first via millimeter-wave signal to be measured of the coupling output port output by described directional coupler is carried out exporting after power attenuation;
Frequency mixer, is connected in described attenuator, for the millimeter-wave signal mixing to be measured of the first via after power attenuation is exported;
Spectrum analyzer, is connected in described frequency mixer, for the millimeter-wave signal to be measured of the first via to after mixing, carries out spectrum analysis, catches the frequency of described first via millimeter-wave signal to be measured, to complete the output frequency test to described millimeter wave free oscillation to be measured source;
Power sensor, is connected in the straight-through output port of described directional coupler, for being DC signal output by the power transfer of the second tunnel millimeter-wave signal to be measured of the straight-through output port output by described directional coupler;
Power meter, is connected in described power sensor, for detection of described direct current signal, to complete the output power test to described millimeter wave free oscillation to be measured source.
2. millimeter wave free oscillation source automatic test macro according to claim 1, is characterized in that, described millimeter wave free oscillation source automatic test macro also comprises:
Gpib bus, for connecting described direct voltage source, described spectrum analyzer and described power meter;
GPIB-USB control card, be connected in described gpib bus, for the relevant parameter having arranged being inserted respectively to described direct voltage source, described spectrum analyzer and described power meter by described gpib bus, and by described gpib bus, from described direct voltage source, described spectrum analyzer and described power meter, obtain respectively output frequency and the output power test data in the operating voltage in described millimeter wave free oscillation to be measured source and testing current data, described millimeter wave free oscillation to be measured source;
Main control computer, be connected in described GPIB-USB control card, for the parameter of described direct voltage source, described spectrum analyzer and described power meter is set respectively, trigger described direct voltage source, described spectrum analyzer and described power meter, read and show each test data, and each test data is managed, preserved and processes.
3. millimeter wave free oscillation source automatic test macro according to claim 2, is characterized in that, the parameter of described direct voltage source at least comprises: the starting potential of described tuning voltage, final voltage and step-length; The parameter of described spectrum analyzer at least comprises: centre frequency, frequency step, bandwidth, resolution bandwidth and video bandwidth; The parameter of described power meter at least comprises: the correction card corresponding with the power sensor of selected applicable described millimeter-wave signal frequency range to be measured.
4. according to the millimeter wave free oscillation source automatic test macro described in claim 1-3 any one, it is characterized in that, described millimeter wave free oscillation to be measured source is voltage controlled oscillator, or the frequency multiplier consisting of with the control loop being connected with described voltage controlled oscillator voltage controlled oscillator.
5. adopt a millimeter wave free oscillation source method of testing for millimeter wave free oscillation source automatic test macro as claimed in claim 1, it is characterized in that, described millimeter wave free oscillation source method of testing at least comprises:
Step S1, by described direct voltage source, to the input of millimeter wave free oscillation to be measured source, supply the supply voltage of its steady operation and control the tuning voltage that it produces the millimeter-wave signal to be measured of different frequency and power, by described millimeter wave free oscillation to be measured source, being produced the millimeter-wave signal to be measured of the current voltage control that is subject to described tuning voltage;
Step S2, splits into two-way millimeter-wave signal to be measured by directional coupler by described millimeter-wave signal to be measured; Wherein, first via millimeter-wave signal to be measured is exported by the coupling output port of described directional coupler, and the second tunnel millimeter-wave signal to be measured is exported by the straight-through output port of described directional coupler;
Step S3, by attenuator, the first via millimeter-wave signal to be measured of the coupling output port output by described directional coupler is carried out exporting after power attenuation, by frequency mixer, the millimeter-wave signal mixing to be measured of the first via after power attenuation is exported, first via millimeter-wave signal to be measured by spectrum analyzer after to mixing carries out spectrum analysis, catch the frequency of described first via millimeter-wave signal to be measured, to complete the output frequency test to described millimeter wave free oscillation to be measured source;
Step S4, by power sensor, by the power transfer of the second tunnel millimeter-wave signal to be measured of the straight-through output port output by described directional coupler, be DC signal output, by described power meter, detect described direct current signal, to complete the output power test to described millimeter wave free oscillation to be measured source.
6. millimeter wave free oscillation according to claim 5 source method of testing, is characterized in that, before described step S1, described millimeter wave free oscillation source method of testing also comprises:
Step S0, the parameter of direct voltage source, spectrum analyzer and power meter is set respectively by main control computer, by GPIB-USB control card, by gpib bus, the relevant parameter having arranged is inserted respectively in described direct voltage source, described spectrum analyzer and described power meter, then by main control computer, trigger described direct voltage source, described spectrum analyzer and described power meter.
7. millimeter wave free oscillation according to claim 6 source method of testing, is characterized in that, described step S0 at least comprises the steps:
Step S01, starting potential, final voltage and the step-length of the tuning voltage of described direct voltage source are set according to test frequency range demand by described main control computer, by GPIB-USB control card, by gpib bus, the relevant parameter of described direct voltage source are inserted in described direct voltage source; Wherein, described tuning voltage is suitable for from starting potential, being progressively increased to final voltage according to its step-length, to control described millimeter wave free oscillation to be measured source, produce the millimeter-wave signal to be measured of different frequency and power, thereby make described millimeter wave free oscillation to be measured source there is the corresponding output frequency of change in voltage scope and the output power range with described tuning voltage;
Step S02, initial describedization spectrum analyzer, centre frequency, frequency step, bandwidth, resolution bandwidth and the video bandwidth of described spectrum analyzer are set by described main control computer, by GPIB-USB control card, by gpib bus, the relevant parameter of described spectrum analyzer are inserted in described spectrum analyzer;
Step S03, according to the applicable power sensor of described millimeter-wave signal Frequency Band Selection to be measured, the correction card corresponding with selected power sensor of described power meter is set by main control computer, by GPIB-USB control card, by gpib bus, the relevant parameter of described power meter inserted in described power meter;
Step S04, triggers described direct voltage source, described spectrum analyzer and described power meter by main control computer.
8. millimeter wave free oscillation according to claim 7 source method of testing, is characterized in that, described step S3 at least comprises the steps:
Step S31, is undertaken the first via millimeter-wave signal to be measured of the coupling output port output by described directional coupler to export after power attenuation by attenuator;
Step S32, is exported the millimeter-wave signal mixing to be measured of the first via after power attenuation by frequency mixer;
Step S33, the first via millimeter-wave signal to be measured by spectrum analyzer after to mixing carries out spectrum analysis for the first time, and catches for the first time the frequency of described first via millimeter-wave signal to be measured;
Step S34, in other parameters, arrange constant in the situation that, centre frequency, bandwidth, resolution bandwidth and the video bandwidth of described spectrum analyzer are set according to the frequency of the described first via millimeter-wave signal to be measured capturing for the first time again by main control computer, first via millimeter-wave signal to be measured by described spectrum analyzer after to mixing carries out spectrum analysis for the second time, and catch for the second time the frequency of described first via millimeter-wave signal to be measured, to complete the output frequency test to described millimeter wave free oscillation to be measured source;
Wherein, the bandwidth of the described spectrum analyzer again being arranged by main control computer is less than the bandwidth of the described spectrum analyzer being arranged first by main control computer, and the frequency of the described first via millimeter-wave signal to be measured capturing is for the second time the output frequency test data in described millimeter wave free oscillation to be measured source.
9. according to the millimeter wave free oscillation source method of testing described in claim 5-8 any one, it is characterized in that, after described step S4, described millimeter wave free oscillation source method of testing also comprises:
Step S5, by GPIB-USB control card, by gpib bus, from described direct voltage source, described spectrum analyzer and described power meter, obtained respectively output frequency and the output power test data in the operating voltage in described millimeter wave free oscillation to be measured source and testing current data, described millimeter wave free oscillation to be measured source, by main control computer, read and show each test data, and each test data is managed, preserved and processes.
10. millimeter wave free oscillation according to claim 9 source method of testing, is characterized in that, after described step S5, described millimeter wave free oscillation source method of testing also comprises:
Step S6, according to operating voltage and the testing current data in described millimeter wave free oscillation to be measured source, calculates the DC power in described millimeter wave free oscillation to be measured source by main control computer; Wherein, the DC power in described millimeter wave free oscillation to be measured source is the operating voltage in described millimeter wave free oscillation to be measured source and the product of testing current data.
11. according to the millimeter wave free oscillation source method of testing described in claim 5-8 any one, it is characterized in that, described millimeter wave free oscillation to be measured source is voltage controlled oscillator, or the frequency multiplier consisting of with the control loop being connected with described voltage controlled oscillator voltage controlled oscillator.
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| CN114089246A (en) * | 2021-11-24 | 2022-02-25 | 上海创远仪器技术股份有限公司 | Method, system, device, processor and storage medium for realizing automatic output power detection for antenna feeder analyzer port |
| CN116539952A (en) * | 2023-07-05 | 2023-08-04 | 北京中成康富科技股份有限公司 | Millimeter wave therapeutic apparatus power intelligent sampling method and system based on Internet of things |
| CN116539952B (en) * | 2023-07-05 | 2023-09-26 | 北京中成康富科技股份有限公司 | Millimeter wave therapeutic apparatus power intelligent sampling method and system based on Internet of things |
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