Advanced numerical solution algorithms for modern EM wave propagation problems

The development of high-order, finite-difference time-domain (FDTD) schemes for modeling and investigating radio-wave propagation problems are presented in this work. The electromagnetic waves can be reproduced precisely in a well-defined discretized space of any geometry, giving accurate simulation results with reasonable computational resources. Special consideration is given to the correct boundary conditions enforced at the media interfaces, as well as to the absorbing boundary conditions that terminate the FDTD grid in open-region problems.