ABSTRACT

In Chapters 4 and 5 we showed results obtained using perfect conductor implementations of scattered field FDTD and compared them to measurements. In this chapter results obtained using scattered field FDTD extended to lossy dielectrics will be shown. Before presenting these results we restate the finite difference equations for a material media developed in Chapter 2. For the results presented in this chapter these equations do not incorporate any frequency dependence in the constitutive parameters, ε, μ, and σ, as discussed in Chapter 8. The materials considered are frequency independent and linear. This formulation can nonetheless treat, at least approximately, most materials commonly encountered in electromagnetic problems.