On the accuracy of MFIE and CFIE in the solution of large electromagnetic scattering problems

Date
2006
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Source Title
Proceedings of the European Conference on Antennas and Propagation, EuCAP 2006
Print ISSN
0379-6566
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Publisher
ESA Publications
Volume
626
Issue
Pages
Language
English
Type
Conference Paper
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Abstract

We present the linear-linear (LL) basis functions to improve the accuracy of the magnetic-field integral equation (MFIE) and the combined-field integral equation (CFIE) for three-dimensional electromagnetic scattering problems involving large scatterers. MFIE and CFIE with the conventional Rao-Wilton-Glisson (RWG) basis functions are significantly inaccurate even for large and smooth geometries, such as a sphere, compared to the solutions by the electric-field integral equation (EFIE). By using the LL functions, the accuracy of MFIE and CFIE can be improved to the levels of EFIE without increasing the computational requirements and with only minor modifications in the existing codes based on the RWG functions.

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Keywords
Basis functions, Combined-field integral equation, Magnetic-field integral equation, Multilevel fast multipole algorithm, Scattering problems, Computational geometry, Electric fields, Integral equations, Linear-linear (LL) basis functions, Rao-Wilton-Glisson (RWG), Electromagnetic wave scattering
Citation
Published Version (Please cite this version)