CAJ | 학술논문

矢量网络分析仪（VNA）是微波元器件和无线系统前端进行表征时必不可少的测量仪器。根据这类仪器测量和校准的特点，提出了基于协方差矩阵的VNA测量不确定度传播分析流程及方法。由于充分考虑了复频信息在实部虚部间、不同频点间、不同变量间的相关性，该方法可以有效地分析VNA系统和随机测量不确定度的定量传播，确保了多元相关变量不确定度分析的正确性和准确性。在实际应用中，重点考察了功率计校准过程中的不确定度传播规律，定量分析了系统测量不确定度从VNA校准件经S-参数有效测量值最终传递到功率计失配因子的结果，并通过Monte Carlo仿真检验了该方法的正确性。
시량망락분석의（VNA）시미파원기건화무선계통전단진행표정시필불가소적측량의기。근거저류의기측량화교준적특점，제출료기우협방차구진적VNA측량불학정도전파분석류정급방법。유우충분고필료복빈신식재실부허부간、불동빈점간、불동변량간적상관성，해방법가이유효지분석VNA계통화수궤측량불학정도적정량전파，학보료다원상관변량불학정도분석적정학성화준학성。재실제응용중，중점고찰료공솔계교준과정중적불학정도전파규률，정량분석료계통측량불학정도종VNA교준건경S-삼수유효측량치최종전체도공솔계실배인자적결과，병통과Monte Carlo방진검험료해방법적정학성。
Vector network analysis is currently the essential technique for the RF microwave components. According to the measurement and calibration features of these network analyzers, this paper proposed a covariance-matrix-based uncertainty analysis procedure and algorithm. Take full account of the complex frequency information between the imaginary and the real parts, the different frequency, the correlation between different variables, the method can effectively analyzer the quantitative calculation of systematic and random uncertainty, and to ensure the correctness and accuracy of a multi-variant uncertainty analysis. Complying with the functional relationships in practice, this paper used the power-meter calibration experiment, and analyze the calculation of quantitative uncertainty propagations from VNA calibration standards to S-parameter measurements and finally to the power-meter calibration results, and used Monte Carlo simulation to test the correctness of the method.