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PHASE CHARACTERISTIC CALIBRATION SYSTEM AND PHASE CHARACTERISTIC CALIBRATION METHOD FOR MILLIMETER WAVE BAND SIGNAL MEASUREMENT CIRCUIT
PHASE CHARACTERISTIC CALIBRATION SYSTEM AND PHASE CHARACTERISTIC CALIBRATION METHOD FOR MILLIMETER WAVE BAND SIGNAL MEASUREMENT CIRCUIT
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机译：毫米波带信号测量电路的相位特性标定系统和相位特性标定方法
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摘要
PROBLEM TO BE SOLVED: To enable calibration of a phase characteristic of a millimeter wave band signal measurement circuit to be accurately performed.;SOLUTION: A calibration signal generating unit 40 generates a calibration signal Er which is obtained by frequency-synchronizing an electric harmonic signal of a frequency at an integer multiple of a repetition frequency of short pulse light P0 and combining a plurality of continuous waves of frequencies different within a frequency domain of a millimeter wave band. A calibration signal waveform acquisition unit 60 samples the calibration signal Er while changing a delay time of sampling light Ps by the sampling light to acquire a waveform of the calibration signal in a time domain. Phase information calculation means 70 calculates a phase of the plurality of continuous waves on the basis of the waveform of the calibration signal obtained for each change of the frequency of the continuous waves to determine a phase characteristic Δφ(f) of a calibration target within the frequency domain. A calibration processing unit 90 determines a phase characteristic ΔΦ(f) of a millimeter wave band signal measurement circuit 1 itself from a difference between the determined phase characteristic Δφ(f) and a phase characteristic ΔΦ(f)' measured at the millimeter wave band signal measurement circuit 1 with respect to the calibration signal Er.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT
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