A 3-D tensor FDTD-formulation for treatment of sloped interfaces in electrically inhomogeneous media

被引：33
作者：
Nadobny, J
Sullivan, D
Wlodarczyk, W
Deuflhard, P
Wust, P
机构：
[1] Klin Strahlenheilkunde, D-13353 Berlin, Germany
[2] Univ Idaho, Dept Elect Engn, Moscow, ID 83844 USA
[3] Konrad Zuse Zentrum Informat Tech Berlin, D-14195 Berlin, Germany
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2003年 / 51卷 / 08期
关键词：
finite-difference time-domain (FDTD) method; inhomogeneous media; permittivity tensor; sloped interfaces;
D O I：
10.1109/TAP.2003.814733
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A general integral finite-difference time-domain (FDTD) formulation on cubical grids for the modeling of electrically inhomogeneous media of arbitrary shape is derived. The simple cubical structure is maintained and no modifications of the integral paths are necessary. Instead, a three-dimensional tensor relationship between the average electric flux density and electric field, is determined beforehand and used during the simulation to account for discontinuities in the neighborhood of sloped interfaces. The accuracy of the method is confirmed by comparisons with analytical solutions.
引用
收藏
页码：1760 / 1770
页数：11
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