Scattering of waves from an electric dipole over an impedance wedge

This chapter deals with scattering of the electromagnetic wave emitted by a Hertzian dipole by an impedance wedge. Using a plane-wave expansion of the dipole field and the newly obtained exact solution of diffraction of a skew-incident plane electromagnetic wave by the same canonical body enables us to deduce an integral representation for the total field. Then by evaluating the multiple integral the far-field expressions are derived and studied. The formulation and the basic steps of analysis are presented. In particular, the far-field expressions for the geometrical-optics and the edge-diffracted waves, including a uniform asymptotic version of the far field are given. The numerical calculation and physical interpretation of the analysis are also carried out.