Title :
A Generalized Local Time-Step Scheme for the FVTD Method for Efficient Simulation of Microwave Antennas
Author :
Fumeaux, Christophe ; Baumann, Dirk ; Leuchtmann, Pascal ; Vahldieck, Riudiger
Author_Institution :
Swiss Federal Institute of Technology, ETHZ, IFH, Gloriastrasse 35, 8092 Zÿrich, Switzerland. Phone: +41 1 632 0601, Email: fumeaux@ifh.ee.ethz.ch
Abstract :
This paper introduces a new generalized local time-step scheme to improve the computational efficiency of the Finite-Volume Time-Domain (FVTD) method. The new approach exploits the advantages of the FVTD method to use unstructured meshes (which allow inhomogeneity of cell densities) for large electromagnetic circuits with fine structural details and at the same time avoids the disadvantage of using a single time step determined by the smallest cell dimensions in the entire mesh. To illustrate this new scheme a large double-ridged horn antenna excited by a finely resolved coaxial feed is analyzed demonstrating a significant speed-up of the computation.
Keywords :
Circuits; Computational efficiency; Computational modeling; Finite difference methods; Horn antennas; Maxwell equations; Microwave antennas; Microwave theory and techniques; Stability; Time domain analysis;
Conference_Titel :
Microwave Conference, 2003 33rd European
Conference_Location :
Munich, Germany
Print_ISBN :
1-58053-834-7
DOI :
10.1109/EUMA.2003.340991
