A locally conformal finite-difference time-domain (FDTD) algorithm for modeling three-dimensional perfectly conducting objects
- 1 September 1997
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Microwave and Guided Wave Letters
- Vol. 7 (9) , 273-275
- https://doi.org/10.1109/75.622536
Abstract
A novel conformal finite-difference time-domain (CFDTD) technique for locally distorted contours that accurately model curved metallic objects is presented in this paper. This approach is easy to implement and is numerically stable. Several examples are presented to demonstrate that the new method yields results that are far more accurate than those generated by the conventional staircasing approach. Example geometries include cylindrical and spherical cavities, and a circular microstrip patch antenna. Accuracy of the scheme is demonstrated by comparing the results derived from analytical and Method of Moments (MoM) techniques.Keywords
This publication has 6 references indexed in Scilit:
- A technique for implementing the FDTD algorithm on a nonorthogonal gridMicrowave and Optical Technology Letters, 1997
- Practical 3-D contour/staircase treatment of metals in FDTDIEEE Microwave and Guided Wave Letters, 1996
- Analysis of general 3-D PEC structures usingimproved CPFDTD algorithmElectronics Letters, 1995
- Three-dimensional contour FDTD modeling of scattering from single and multiple bodiesIEEE Transactions on Antennas and Propagation, 1993
- Modeling three-dimensional discontinuities in waveguides using nonorthogonal FDTD algorithmIEEE Transactions on Microwave Theory and Techniques, 1992
- Analysis of the numerical error caused by the stair-stepped approximation of a conducting boundary in FDTD simulations of electromagnetic phenomenaIEEE Transactions on Antennas and Propagation, 1991