EFIE Modeling of High-Definition Multiscale Structures

We propose a method to significantly improve the spectral properties of the EFIE MoM matrix for broad-band analysis of structures with fine details, non-uniform meshes, and large overall sizes. A multilevel approach allows to overlay fine meshes and quasi-Nyquist sampled meshes; the fine-mesh condit...

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Published in:IEEE transactions on antennas and propagation 2010-07, Vol.58 (7), p.2362-2374
Main Authors: Vipiana, Francesca, Francavilla, Matteo Alessandro, Vecchi, Giuseppe
Format: Article
Language:English
Subjects:
Algebra
Antennas
Conditioning
Electromagnetic analysis
Electromagnetic compatibility
Electromagnetic fields
fast solvers
Finite element method
Frequency
Geometry
Integral equations
Mathematical models
method of moments (MoM)
Moment methods
Multilevel
Multilevel systems
multiresolution techniques
Satellite antennas
Spectra
Wavelengths
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description We propose a method to significantly improve the spectral properties of the EFIE MoM matrix for broad-band analysis of structures with fine details, non-uniform meshes, and large overall sizes. A multilevel approach allows to overlay fine meshes and quasi-Nyquist sampled meshes; the fine-mesh conditioning is solved via hierarchical basis functions, and the quasi-Nyquist sampled part is treated by an algebraic incomplete LU preconditioner. Numerical results show the effectiveness of the approach for several realistic structures with overall sizes of ten/twenty wavelengths and levels of detail from very moderate to extending over the whole structure.
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subjects Algebra
Antennas
Conditioning
Electromagnetic analysis
Electromagnetic compatibility
Electromagnetic fields
fast solvers
Finite element method
Frequency
Geometry
Integral equations
Mathematical models
method of moments (MoM)
Moment methods
Multilevel
Multilevel systems
multiresolution techniques
Satellite antennas
Spectra
Wavelengths
title EFIE Modeling of High-Definition Multiscale Structures
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