FDTD formulation for dispersive chiral media using the Z transform method

被引:65
作者
Demir, V [1 ]
Elsherbeni, AZ [1 ]
Arvas, E [1 ]
机构
[1] Syracuse Univ, Dept Elect Engn & Comp Sci, Syracuse, NY 13244 USA
关键词
dispersive chiral media; electromagnetic scattering; finite-difference time-domain (FDTD) method; Z transform theory;
D O I
10.1109/TAP.2005.856328
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 [电气工程]; 0809 [电子科学与技术];
摘要
A finite-difference time-domain (FDTD) scattered-field formulation for dispersive chiral media is developed and presented in this paper. The FDTD formulation is based on the Z transform method and models the frequency-dependent dispersive nature of permittivity, permeability, and chirality as well. The permittivity and permeability are assumed to follow the Lorentz model while the chirality is assumed to follow the Condon model. The formulation is developed for three-dimensional electromagnetic applications. Results of this formulation are presented for the copolarization and cross-polarization of the reflected and transmitted waves from a chiral slab due to normal incidence of a plane wave and for the scattered field from a chiral sphere, a chiral cube, and a finite chiral cylinder. Validation is performed by comparing the results with those based on the exact solutions and those obtained from method of moments solutions.
引用
收藏
页码:3374 / 3384
页数:11
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