Reduced-order modeling for co-simulation of circuit and electromagnetic interactions

Accurately modeling the interaction of circuits and electronic devices within an electromagnetic environment is critical to the analysis and design of their constituent systems. Creating a rational macromodel of a distributed circuit-field element is a reliable and effective method for describing these interactions in a manner which can be incorporated into a circuit simulator. Due to limitations present in rational modeling algorithms, further processing of these models is necessary to both confirm whether a model is passive, and to correct any non-passivity which is present. A class of iterative inverse algorithms is utilized to create a complete passive macromodel which can readily be incorporated within a simulator to analyze the behaviors caused by the interactions of the electromagnetic and circuit elements.