A reduced forward operator for electromagnetic wave scattering problems

Konferenz: CEM 2006 - 6th International Conference on Computational Electromagnetics
04.04.2006 - 06.04.2006 in Aachen, Germany

Tagungsband: CEM 2006

Seiten: 2Sprache: EnglischTyp: PDF

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Dongen, Koen W. A. Van; Wright, William M. D. (Ultrasonics Research Group, Department of Electrical and Electronic Engineering, University College Cork, Ireland)
Brennan, Conor (RF modelling and simulation group, RINCE, School of Electronic Engineering, Dublin City University, Ireland)

This paper describes the development of a reduced forward operator for solving electromagnetic scattering problems with a conjugate gradient fast Fourier transform scheme. The reduction is obtained by decoupling the interaction between the locations in the spatial computational domain at which there is non-zero contrast and those positions at which there is zero contrast. The decoupling is achieved by multiplying the kernel by a diagonal matrix whose entries reflect the presence or absence of contrast at the associated point. Numerical results prove that the reduced operator improves the convergence rate.