Scattering from dielectric cylinders: E/sub s/ formulation, using a combination of FEM and integral equation approach

The E/sub s/ and H/sub s/ variational formulation together with the appropriate surface integral equations was used to solve for scattering from arbitrary anisotropic cylinders. The finite element method (FEM) is used on the scatterer and a small region enclosing it. At the boundary of this finite region the surface integral equation is used to impose boundary conditions on the electromagnetic field components. In the process of generating the FEM mesh a special scheme is used so that when integral equation boundary conditions are imposed the bandwidth of the matrix does not increase at random but leads to a well-structured matrix. This matrix is then solved using matrix partitioning techniques. Numerical results are presented; the E/sub /spl rho// and E/sub /spl phi// components of scattered field for a transverse electric (TE) wave incident at 45/spl deg/ to z-axis are shown.<>