Plane wave scattering by a chiral-coating dielectric sphere

Using the spherical vector wave functions, an analytical solution to the scattering of a chiral-coated dielectric sphere with plane wave is presented. Applying the boundary conditions on each interface among the dielectric sphere, chiral medium and free space, the expansion coefficients for the internal and the scattered fields are determined. The influences of the chiral-coated spherical shell and the chiral parameter on radar cross section (RCS) are discussed numerically.