Metrology for Time-Domain Transformed and Time-Gated S-Parameters Using Pydynamic

A software package for VNA time-domain metrology is demonstrated. Based on the PyDynamic toolbox, this software provides uncertainty propagation for S-parameters measured in the frequency-domain transformed to the time-domain, time-gated and transformed back to the frequency-domain. Here, using VNA measurements of a mismatched coaxial line as inputs, the results produced by PyDynamic at each step of the time-gating process are presented and compared with other techniques. Through these comparisons, the metrological validity of the results from PyDynamic is established, and its suitability for providing credible time-gated S-parameter measurements with uncertainties is demonstrated.