Fixed-order parametric macromodeling of interconnects from S-parameter data using Loewner matrix based method

A Parametric macromodeling algorithm based on standard Loewner Matrix (LM) method was introduced recently for generating parametric time-domain macromodels based on S-parameter data. The method was shown to be efficient and accurate for systems with large number of ports and poles. However, the method is not suitable for the parametric problems where the parameter has a direct impact on the order i.e. the order changes considerably with the parameter. In this paper, we proposed an extension of this parametric algorithm in order to handle this kind of problems.