IdEM is a user friendly tool for the generation of macromodels of linear lumped multi-port structures (e.g., via fields, connectors, packages, discontinuities, etc.), known from their input-output port responses. The raw characterization of the structure can come from measurement or simulation, either in frequency domain or in time domain. A suite of advanced and well conditioned rational fitting modules grants applicability to virtually any kind of characterization. The resulting models are cast in common SPICE formats for the system-level simulations required in your design flow. Thus, IdEM enables SPICE processing for any kind of linear structure, component, interconnect, package, whatever your native characterization and application area.