Multiconductor transmission line modeling with VHDL-AMS for EMC applications

A multiconductor transmission line (MTL) model for the time domain considering losses, incident fields and skin-effects for the modeling language VHDL-AMS was developed. The model is based on the FDTD method. It can be extended by various VHDL-AMS circuit files and used for linear and non-linear time domain simulations. Modern standardized modeling languages like VHDL-AMS have the important advantage that growing model libraries permit fast creation of large simulation models. Exchange of models and extension of models is easily possible. After a short introduction to VHDL-AMS and presentation of the MTL- and FDTD-theory used for modeling, examples are shown. The developed model is compared to calculation results gained with other simulation methods. The validity of the implemented VHDL-AMS model is proved.