A Comparison of Uncertainty Evaluation Methods for On-Wafer S-Parameter Measurements

An experimental analysis of on-wafer S-parameter uncertainties is presented. Recently, two different approaches, based either on differential numerical programming or on a fully analytical solution have been introduced. In order estabilish their suitability, a careful comparison is here given for on-wafer meaurements. Through this comparison, possible limitations and causes of errors are also highlighted. Finally, the uncertainty evaluation of the 16-term error model is here presented for the first time.