Title :
Practical 3-D contour/staircase treatment of metals in FDTD
Author :
Anderson, J. ; Okoniewski, M. ; Stuchly, S.S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
fDate :
3/1/1996 12:00:00 AM
Abstract :
The standard finite-difference time-domain (FDTD) method incorporates an inaccurate staircase representation of perfect electric conductors. More accurate, contour-type update formulas have been proposed. These approaches suffer from bookkeeping complexity, difficulties in mesh generation, and stability problems. Only simplified special cases have been implemented in three dimensions. A new contour-like FDTD algorithm is presented. Subcell formulas and staircase logic are combined to produce a three-dimensional (3-D) algorithm that is simple, robust, and fully automatic
Keywords :
conductors (electric); finite difference time-domain analysis; mesh generation; waveguide theory; 3D contour/staircase treatment; FDTD; mesh generation; perfect electric conductors; stability problems; staircase logic; subcell formulas; Approximation algorithms; Automatic logic units; Conductors; Finite difference methods; Mesh generation; Nearest neighbor searches; Robustness; Stability; Surface treatment; Time domain analysis;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
