BOUNDARY-CONDITION TRANSFER METHOD FOR THE SOLUTION OF ELECTROMAGNETIC SCATTERING BY ROTATIONALLY SYMMETRICAL PENETRABLE BODIES

A novel differential formulation of electromagnetic scattering by rota tionally symmetric penetrable bodies is presented. The formulation is essentially based on the representation of vector fields in terms of s pherical vector wave functions. In regions where we have physical inho mogenity the representation is in terms of position-dependent expansio n coefficients. The differential equation system for these variable co efficients is deduced from the relevant wave equation. This system is numerically solved as an initial value problem, and the unknown consta nt expansion coefficients are found with a matrix inversion. The metho d was tested and validated on a number of problems, whose exact soluti ons are available, and the results obtained for scatterers for which n o exact solutions are present were succesfully compared with the ones obtained by other methods.