FDTD Implementation of Surface Impedance Boundary Condition for Dispersive Layer Backed by Perfect Conductor

Yasuhiro NISHIOKA  Osamu MAESHIMA  Toru UNO  Saburo ADACHI  

IEICE TRANSACTIONS on Electronics   Vol.E81-C   No.12   pp.1902-1904
Publication Date: 1998/12/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Special Issue on Computational Electromagnetics)
FDTD,  EM scattering,  SIBC,  PLRC,  

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In this paper, the surface impedance boundary condition (SIBC) for a dispersive lossy medium backed by a perfect conductor is implemented in computation of electromagnetic (EM) scattering using the finite difference time domain (FDTD) method. The dispersion of the surface impedance is incorporated into FDTD update equations by using the piecewise linear recursive convolution (PLRC) approach. The validity of the proposed method is confirmed numerically.