The asymptotic solution of the diffraction problems of the efectromagnetic waves by a perfect comductor

In this paper, the two dimentional problems of the diffraction of the electromagnetic waves by a perfect conductor are discussed by using the perturbational mapping function in Savin’s form. The general method and asymptotic formulas to solve this problem are presented. Especially, for the asymptotic solutions based on a circular cylindrical conductor, the formulas to calculate “O”—order and “I”—order asymptotic solution are given