A New Solution for Characterizing Electromagnetic Scattering by a Gyroelectric Sphere

A new solution to electromagnetic scattering by a gyroelectric sphere is obtained. Gyroelectric characteristics are considered, where both internal transmitted fields and external scattered fields are derived theoretically. The derived solutions are capable of dealing with incident electromagnetic waves at an arbitrary incident angle and arbitrary polarization. After the theoretical formulas are obtained, numerical validations are made by comparing our present results with those obtained using the Fourier transform method. Good agreements are observed between the present results obtained in this paper and those obtained using the other method. Some new numerical results are presented to investigate effects of electric anisotropy ratio and gyroelectric ratio on the radar cross section for a gyroelectric sphere and a left-handed metamaterial gyroelectric sphere. The new formulation of the problem is expected to have wide practical applications. In addition, some critical mistakes in literature were corrected.