Polynomial chaos based variability analysis of multiport systems

A novel technique for the variability analysis of generic multiport systems (e.g. interconnections, filters, connectors) is presented. The proposed method describes the statistical properties of a multiport system using the Polynomial Chaos expansion, starting from a set of univariate macromodels of the system transfer function. A numerical example shows the accuracy and efficiency of the proposed approach with respect to standard Monte Carlo analysis.