Models of dielectric materials used in high-speed design by FD2TD method

Considering loss effects on signals in the design of a circuit or a system that works at high frequency will allow to accurately predict a realistic behavior through models that include specific parameters. Losses in dielectric materials and in conductors are simulated in time or frequency domains where different models can better estimate the materials´ properties. In the present paper we apply and compare dielectric models like single, multi-pole and wideband Debye models that are used to estimate frequency dependent properties of dielectric losses in high speed applications. A variant of frequency-dependent finite difference time domain (FD²TD) will be applied to properly describe the electromagnetic field in space and time, in a recursive mode for easy implementation.