TY - GEN
T1 - Analysis of scattering by PEC objects in layered medium with Calderón preconditioner
AU - Chen, Yongpin P.
AU - Meng, Min
AU - Sun, Sheng
AU - Jiang, Lijun
AU - Chew, Weng Cho
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/9/18
Y1 - 2014/9/18
N2 - Electromagnetic scattering by perfect electrically conducting (PEC) objects in a layered medium is studied in this paper. The layered medium Green's function is adopted as the kernel of the electric field integral equation (EFIE) so that the effects from the multilayered background can be accounted for automatically. However, the spectrum of the EFIE with this kernel, is unfortunately undesirable. This leads to slow convergence of the iterative solution. To improve the convergence, the Calderón identities are derived and leveraged to precondition the EFIE. By utilizing Buffa-Christiansen (BC) basis function in discretizing the preconditioning operator, the preconditioner can be made completely multiplicative. Different numerical examples are designed to show the performance of the preconditioner. It is shown that the proposed preconditioner makes the EFIE system with layered kernel converge rapidly, independent of the discretization density.
AB - Electromagnetic scattering by perfect electrically conducting (PEC) objects in a layered medium is studied in this paper. The layered medium Green's function is adopted as the kernel of the electric field integral equation (EFIE) so that the effects from the multilayered background can be accounted for automatically. However, the spectrum of the EFIE with this kernel, is unfortunately undesirable. This leads to slow convergence of the iterative solution. To improve the convergence, the Calderón identities are derived and leveraged to precondition the EFIE. By utilizing Buffa-Christiansen (BC) basis function in discretizing the preconditioning operator, the preconditioner can be made completely multiplicative. Different numerical examples are designed to show the performance of the preconditioner. It is shown that the proposed preconditioner makes the EFIE system with layered kernel converge rapidly, independent of the discretization density.
UR - http://www.scopus.com/inward/record.url?scp=84907867427&partnerID=8YFLogxK
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U2 - 10.1109/APS.2014.6905421
DO - 10.1109/APS.2014.6905421
M3 - Conference contribution
AN - SCOPUS:84907867427
T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
SP - 2188
EP - 2189
BT - 2014 IEEE Antennas and Propagation Society International Symposium(APSURSI)
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 IEEE Antennas and Propagation Society International Symposium, APSURSI 2014
Y2 - 6 July 2014 through 11 July 2014
ER -