FINITE-DIFFERENCE SOLUTION OF SCATTERING BY A RECTANGULAR CYLINDER (TM) USING EXACT MESH TERMINATION

Finite Difference Techniques for solution of ''steady state'' frequenc y domain Heimboltz equation is quite simple and straightforward. Howev er, for open regions, the finite difference mesh needs to be terminate d so that the proper boundary conditions are imposed for the solution. A hybrid method is described in this paper which guarantees that the boundary conditions generated for the termination of the open region m esh is exact. The conditions are generated from the Green's functions. The technique is applied to the solution of electromagnetic scatterin g by conducting cylinders (TM case). (C) 1995 John Wiley & Sons, Inc.