Electromagnetic scattering from a conducting circular cylinder covered with a circumferentially magnetized ferrite

The geometry considered is an infinite conducting circular cylinder carrying a steady current and surrounded by an annulus of circumferentially magnetized ferrite. Plane wave scattering is treated for both E- and H-polarized incident waves yielding scattered fields which contain both polarizations. The scattered fields for the ferrite structure, and in fact for a general class of radially inhomogeneous and anisotropic structures, are shown to be symmetrical. The cross polarized scattered fields are shown to exhibit nulls in the forward and backward scattering directions. Numerical results are presented for the scattering cross section and the relative energy in each polarization. It is seen that considerable control of the scattered fields can be exercised by varying the steady current in the conducting cylinder.