Abstract
In this paper, the electromagnetic scattering of three-dimensional (3D) dielectric bodies is investigated by using the mixed technique of method of moments (MoM), conjugate gradient method (CGM) and fast Fourier transform (FFT). Pulse basis functions and a Dirac /spl delta/ function are used for expansion and testing purposes to discretize the electric field integral equation (EFIE). CGM and FFT techniques are used for reducing storage and CPU time, therefore electrically large bodies can be handled simply and effectively. The numerical results are validated by comparing the radar cross section (RCS) of dielectric spheres with those obtained using analytical method or results given in other papers.
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