유전체의 과도 산란 해석을 위한 시간영역 결합 적분방정식

Time Domain Combined Field integral Equation for Transient Scattering from Dielectric Body

In this paper, we propose a tim e dom ain com bined field integral equation (T D - C F IE ) form ulation to analyze the transient electrom agnetic response from three-dim ensional dielectric objects. T he solution m ethod in th is paper is based on the m ethod o f m om ents (M o M ) th a t involves separate spatial and tem poral testing procedures. A set o f the R W G (R ao , W ilto n , G lisson) functions is used for spatial expansion of the equivalent electric and m agnetic current densities and a com bination o f R W G ana its orthogonal com ponent is used as spatial testing. W e also investigate spatial testing procedures for the T D - C F IE to select the proper testing functions th a t are derived from the Laguerre polynom ials. These basis functions are also used for tem poral testing. N um erical results com puted b y the proposed form ulation are presented and com pared w ith the solutions o f the frequency dom ain com bined field integral equation (FD-CFIE).