Electromagnetic scattering by dielectric objects in the presence of a layered medium is investigated by applying the Poggio-Miller-Chang-Harrington-Wu-Tsai (PMCHWT) equation combined with the layered medium Green's function. Due to the electric field integral equation (EFIE) operator involved, the spectrum of the PMCHWT equation is also undesired. When the surface is densely discretized, the condition of the resulting matrix is extremely bad. An effective Calderón preconditioner is developed in this paper to improve the convergence. Different from its free space counterpart, the Calderón identities for inhomogeneous medium need to be re-derived. It is shown from numerical examples that the convergence of the PMCHWT system in layered medium can be significantly improved by using the proposed Calderón preconditioner.
|Title of host publication
|2014 IEEE Antennas and Propagation Society International Symposium(APSURSI)
|Institute of Electrical and Electronics Engineers Inc.
|Number of pages
|Published - Sep 18 2014
|2014 IEEE Antennas and Propagation Society International Symposium, APSURSI 2014 - Memphis, United States
Duration: Jul 6 2014 → Jul 11 2014
|IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
|2014 IEEE Antennas and Propagation Society International Symposium, APSURSI 2014
|7/6/14 → 7/11/14
ASJC Scopus subject areas
- Electrical and Electronic Engineering