Residual Systematic Error Terms Estimation Method by Digital Processing the Measurements Results of Complex Reflection Coefficient in Time Domain

The estimation and compensation method of the systematic measurement error terms, which are not removed by the one-port calibration of vector network analyzer, is proposed. The method is based on the well-known ripple methods, used to obtain the residual systematic measurement error terms estimates in the frequency domain by the insertion a regular transmission line section with characteristic impedance close to the reference impedance of the vector network analyzer port. By the using of the time domain analysis technics for the processing of the digitized ripple patterns allowed made to obtain the more accurate estimates of the residual systematic measurement error terms and to use them to correct the results of the measurements of the complex reflection coefficient and to correct the calibration standard models. The evaluation of the complex reflection coefficient systematic measurement error, achieved as a result of the proposed method usage, is also considered.