The time-domain simulation of the dielectric properties of an epoxy laminate substrate

Using system identification techniques, a wide band model is developed of a typical epoxy laminate material often used as the substrate in printed circuit boards (printed wiring boards). The model is expressed in the frequency-domain using a set of Debye poles. The model is then incorporated in a time-domain electromagnetic simulation code and validated by the consideration of the scattering properties of a planar slab.