Title :
A modified Lanczos algorithm for the computation of transient electromagnetic wavefields
Author :
Remis, Rob F. ; Van Den Berg, Peter M.
Author_Institution :
Fac. of Electr. Eng., Delft Univ. of Technol., Netherlands
fDate :
12/1/1997 12:00:00 AM
Abstract :
A new method for computing transient electromagnetic wavefields in inhomogeneous and lossy media is presented. The method utilizes a modified Lanczos scheme, where a so-called reduced model is constructed. A discretization of the time variable is then superfluous. This reduced model represents the transient electromagnetic wavefield on a certain bounded interval in time. Some theoretical aspects of the method are highlighted and numerical results showing the performance of the method for two-dimensional (2-D) configurations are given. Also, comparisons between this Lanczos method and the finite-difference time-domain (FDTD) method are made
Keywords :
electromagnetic field theory; transient analysis; Lanczos algorithm; inhomogeneous lossy medium; reduced model; transient electromagnetic wavefield; Differential equations; Electromagnetic fields; Electromagnetic scattering; Electromagnetic transients; Finite difference methods; Maxwell equations; Nonhomogeneous media; Partial differential equations; Symmetric matrices; Time domain analysis;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
