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ABSTRACT
An approximate diffraction coefficient is presented for an impedence wedge at skew incidence. This is based on suitable modifications of the available skew incidence solutions for an impedance half plane. The derived coefficients reduce to those for an impedance wedge at normal incidence, a perfectly conducting wedge at skew incidence as well as the impedance half Plane at skew incidence. An additional crucial requirement that the total field remairs continuous at the reflection and. shadow boundary is also imposed, using the derived approximate diffraction coefficient, a first order solution is obtained for the scattering by a polygonal impedance cylinder at skew mcidence. ThiS.is then compared with numerical data to validate the accuracy of the presented dyadic coefficient.