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

Abstract

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.