Abstract: | The diffraction of a plane electromagnetic wave obliquely incident upon the edge of a coated wedge is considered. The generalized
impedance boundary conditions (GIBC's) on the wedge's faces are used to simulate the effect of the coatings. To insure the well-posedness of the problem, special
contact conditions (CC's) on the edge are additionally imposed. By using Sommerfeld integrals, the problem is reduced to a system of coupled functional
equations, which is solved by the perturbation method. It is shown that, for a certain range of the angles of oblique incidence,
the solution can be represented in the form of convergent series that are Neumann series for linear equations with contracting
operators. Nonuniform asymptotics of the wave field for regions outside a neighborhood of the edge of the wedge are constructed.
Bibliography: 9 titles.
Translated fromZapiski Nauchnykh Seminarov POMI, Vol. 218, 1994, pp. 72–95.
Translated by L. G. Vardapetyan and M. A. Lyalinov. |