Abstract:

According to some disadvantages in geometrical modeling and computational work of conventinal method of moment (MoM) based on RWG basis function, a new rooftop basis function defined on parametric curving surface is proposed. By virtue of geometrical modeling based on parametric curving surface, few curving quadrilaterals are used to exactly approximate the surface of scatterers. Rooftop basis function defined on parametric curving surface greatly decreases the matrix dimension. At the same time, the computational work is reduced. Compared the results of this method and literatures, good agreement is found between them. And the new method decreases unknowns and saves computer storage greatly.