Title :
Numerical stability of finite difference time domain methods
Author :
Thoma, Peter ; Weiland, Thomas
Author_Institution :
Comput. Simulation Technol. GmbH, Darmstadt, Germany
fDate :
9/1/1998 12:00:00 AM
Abstract :
Recently, several modifications of Yee´s well known FDTD method to locally refined grids or non-orthogonal coordinates have been presented. These methods sometimes show an unexpected unstable behavior. In this paper we will classify such instabilities in order to derive rules how to avoid them. As an example, we present a long term numerically stable subgridding scheme which will be examined by regarding a microstrip phase shifter
Keywords :
finite difference time-domain analysis; microstrip components; numerical stability; phase shifters; finite difference time domain method; mesh refinement; microstrip phase shifter; nonorthogonal coordinates; numerical stability; subgridding; Computer simulation; Conducting materials; Continuous time systems; Finite difference methods; Integral equations; Maxwell equations; Numerical stability; Symmetric matrices; Time domain analysis; Voltage;
Journal_Title :
Magnetics, IEEE Transactions on
