Title :
Integral equation based analysis of transient scattering from surfaces with impedance boundary condition
Author :
Chen, Qin ; Lu, Mingvu ; Michielssen, Eric
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
Time domain integral equation (TDIE)-based methods for analyzing transient scattering from objects characterized by an impedance boundary condition (IBC) have been studied less extensively than their frequency domain counterparts. Here, a new TDIE-based scheme for analyzing scattering from arbitrarily shaped three-dimensional objects characterized by an IBC is presented. Specifically, a set of two coupled integral equations that involves no analytical approximations and that is devoid of spurious solutions is constructed. These TDIE are solved using a marching-on-in-time (MOT) technique wherein interactions arising from the IBC are accounted for through a recursive convolution algorithm. The proposed scheme is verified by two numerical examples.
Keywords :
boundary integral equations; convolution; electric impedance; electromagnetic wave scattering; integral equations; recursive estimation; time-domain analysis; transient analysis; IBC; TDIE; arbitrarily shaped three-dimensional objects; coupled integral equations; impedance boundary condition; marching-on-in-time technique; recursive convolution; time domain integral equation; transient scattering; Boundary conditions; Computational electromagnetics; Convolution; Electromagnetic scattering; Electromagnetic transients; Integral equations; Permeability; Permittivity; Surface impedance; Transient analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1330199
