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Workflow of topology simulation in automotive communication focused on frequency dependent cable modelling procedures

The transmission of automotive communication-signals in mass production is based mainly on electrical cables used in topologies which do not meet technical schoolbook requirements perfectly. For evaluating their signal quality and their communication robustness time-domain based simulation tools are essential. One of the key elements hereby is an adjustable cable model. Unfortunately real cables show frequency-dependent behaviours which are not covered by time-domain simulation tools usually. The paper points out some summarizing results of various projects which enable a workflow beginning with (noisy) cable measurements going via approximation procedures up to frequency and time domain qualified models.