Theory and Applications of the 3-Dimensional Finite-Difference Time-Domain Method

摘要

The 3-dimensional finite-difference time-domain method is a numerical method forsolving electromagnetic penetration and scattering problems. It uses a finite difference representation of the time dependent Maxwell equations. The object of interest is embedded in a lattice and the time is divided in discrete intervals. By applying the finite-difference equations for every time step the propagation and scattering of waves is simulated. In this report the 3-dimensional FD-TD method and its algorithms are explained. Results are presented for a perfectly conducting plate, cube and wedge and for a dielectric layered sphere. The calculated results agree with experimental and, exact theoretical results. Numerical computations, Finite difference method, Scattering of electromagnetic waves, Maxwell equation, Radar cross section, Time domain method, Boundary conditions.