A reduced forward operator for electromagnetic wave scattering problems
Conference: CEM 2006 - 6th International Conference on Computational Electromagnetics
04/04/2006 - 04/06/2006 at Aachen, Germany
Proceedings: CEM 2006
Pages: 2Language: englishTyp: PDFPersonal VDE Members are entitled to a 10% discount on this title
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.