Analytical Solution Of EM Scattering From An Uniaxial Bianisotropic Circular Cylinder

It is an significant subject for military and civil applications to analyze the electromagnetic scattering by a complex object, which have been used in modern mobile communications, radar detection, Navigation and positioning technology, development of new antenna and so on. Application of the simplified wave function is one of the most effective way to solve electromagnetic scattering problems, this paper is to do research on such method, the purpose of this passage is to study scattering by an infinitely homogeneous uniaxial bianisotropic circular cylinder. The key is to be able to expand the electromagnetic within uniaxial bianisotropic medium circular cylinder.There are four tensors for uniaxial bianisotropic medium studied in this passage. The electromagnetic wave equation is solved by using the source-free Maxwell’s equations combined with constitutive relations of media. This passage proposed to solved the problem in the Fourier transformation domain. Based on the eigen plane wave spectrum representation of the field and the Fourier expansion for the unknown angular spectrum amplitude, introduce the cylindrical vector-wave-function, the internal field is expressed as an integral equation in terms of cylindrical vector-wave-function. Then, we establish boundary conditions of two-dimensional normal incidence, for the normal incidence in free space the electromagnetic change to TE and TM polarizations., we give incident field and scattered field of outside circular cylinder. Combined with the electromagnetic expression inside circular cylinder and the continuity of the tangential electric and magnetic field at border to formulate the boundary value problem by a plane wave normally incident, then we get the matrix equation. By making FORTRAN program to obtain scattered field coefficients. Finally, the radar cross width is figured out and discussed after using the large argument approximation of Bessel function.The results in this passage are in good agreement with the existing literature numerical results after comparison, compared with traditional methods, the method proposed in this passage has more advantages and high application value.