NUMERICAL-CALCULATION OF THE DIFFRACTION COEFFICIENTS FOR AN ARBITRARY SHAPED PERFECTLY CONDUCTING CONE

A method for numerical calculation of the diffraction coefficients for electromagnetic diffraction by arbitrarily shaped perfectly conductin g cones is proposed, The approach makes an extensive use of the analyt ic formulas of Smyshlyaev [15] in combination with further development s, including a use of the potential theory adapted to the Laplace-Belt rami operator on a subdomain of unit sphere. This reduces the problem to a Fredholm integral equation on the closed curve of the unit sphere (defining the cone's geometry) which can be solved numerically, This strategy permits us to implement a numerical code for calculation of t he diffraction coefficients for cones of rather general cross sections , Results of sample calculations for the circular and elliptic cones a re given.