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Time Domain Combined Field Integral Equation for Transient Electromagnetic Scattering from Dielectric Body  

Kim Chung-Soo (호서대 정보통신응용기술학과)
An Hyun-Su (호서대 정보통신응용기술학과)
Park Jae-Kwon (호서대 정보통신응용기술학과)
Jung Baek-Ho (호서대 전기정보통신공학부)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.53, no.12, 2004 , pp. 626-633 More about this Journal
Abstract
In this paper, we present a time domain combined field integral equation (TD-CFIE) formulation to analyze the transient electromagnetic response from three-dimensional dielectric objects. The solution method in this paper is based on the method of moments (MoM) that involves separate spatial and temporal testing procedures. A set of the RWG (Rao, Wilton, Glisson) functions Is used for spatial expansion of the equivalent electric and magnetic current densities and a combination of RWG and its orthogonal component is used as spatial testing. We also investigate spatial testing procedures for the TD-CFIE to select the proper testing functions that are derived from the Laguerre polynomials. These basis functions are also used for temporal testing. Use of this temporal expansion function characterizing the time variable enables one to handle the time derivative terms in the integral equation and decouples the space-time continuum in an analytic fashion. Numerical results computed by the proposed formulation are presented and compared with the solutions of the frequency domain combined field integral equation (FD-CFIE).
Keywords
Transient; Electromagnetic Scattering; Dielectric; CFIE; Laguerre Polynomial;
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