Scattering of a Conducting Sphere Covered with Chiral Metamaterials by a Plane Wave

Based on the Lorenz-Mie theory, the scattering characteristics of a conducting sphere covered with chiral metamaterials (CMMs) by a plane wave are numerically calculated. The relative permittivity and permeability of CMMs are negative. In the case of negative refractive index., the analytical expressions for the scattering of a multilayered CMMs sphere are briefly given. In this paper., the effects of the negative refractive and the thickness of CMMs on electromagnetic scattering of a conducting sphere are analyzed. The results show that the backscattering of the conducting sphere can be reduced by the CMMs coating., whereas the scattering is not necessarily reduced with the increasing of the coating thickness. Therefore., we can use the thinner CMMs to achieve the better stealth performance to some extent.