시간영역 자장 적분방정식을 이용한 유전체의 전자파 산란 과도해석
Transient Analysis of Electromagnetic Scattering from Dielectric Objects Using Time-Domain Magnetic Field Integral Equation
시간영역 자장 적분방정식 유전체 전자파산란 과도해석;
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In this paper, we propose a time-domain magnetic field integral equation for analyzing the transient electromagnetic response from three-dimensional (3-D) dielectric bodies. The solution method in this paper is based on the Galerkin's method that involves separate spatial and temporal testing procedures. Triangular patch basis functions are used for spatial expansion and testing functions for arbitrarily shaped 3-D dielectric structures. The time-domain unknown coefficients of the equivalent electric and magnetic currents are approximated by a set of orthonormal basis function that is derived from the Laguerre polynomials. These basis functions are also used for the temporal testing. Numerical results computed by the proposed method are presented and compared.