A Hybrid FDTD/Quasistatic Technique for the Accurate Modeling of RF Loss Mechanisms

This paper presents a novel method of coupling a quasistatic field solver with the finite-difference time-domain technique for the more efficient modeling of multilayer packaging structures including metal and dielectric loss effects. Lossy metal characteristics are first simulated with a dense quasistatic or a dense 2.5D-FDTD grid and the resulting field correction factors are then used to enhance the accuracy of a much coarser 3D FDTD mesh.