A HIGHLY ACCURATE PML-BIE SOLVER FOR THE ELECTROMAGNETIC SCATTERING PROBLEM IN A MULTILAYERED MEDIUM.

This paper proposes a new boundary integral equation (BIE) methodology based on the perfectly matched layer (PML) truncation technique for solving the electromagnetic scattering problems in a multilayered medium. Instead of using the original PML stretched fields, modified fields which are also equivalent to the solutions in the physical region are introduced. This significantly simplifies the study of the proposed methodology for solving the PML problem. Then some PML transformed layer potentials and the associated boundary integral operators are defined and the corresponding jump relations are shown. Under the assumption that the fields vanish on the PML boundary, the solution representations, as well as the related BIEs and regularization of the hypersingular operators, in terms of the current density functions on the truncated interface, are derived. Numerical experiments are presented to demonstrate the efficiency and accuracy of the method. [ABSTRACT FROM AUTHOR]