Hybridation de methodes numeriques pour l'etude de la susceptibilite electromagnetique de circuits planaires

Abstract : Electromagnetic susceptibility study of electronic circuits requires the use of a simulation tool which is fast, accurate and flexible enough to incorporate the latest technological innovations. The Wave Concept Iterative Procedure (WCIP) initially proposed by H. Baudrand is particularly adapted for numerical modeling of multilayered circuits with multilevel metallization. For this kind of circuit, it turns out to be one of the methods that uses the smallest number of unknowns to reach a given accuracy. However, the WCIP is not appropriate for inhomogeneous dielectric substrates and metallized via holes. The aim of this PhD thesis is to overcome these limitations coupling the WCIP with volume numerical methods. First, hybridization is carried out with the Frequency Domain Transmission Line Matrix (denoted FDTLM) assuming matching meshes at the interface between computational domains of both methods. Subsequently, the coupling with a finite element technique like a Hybridized Discontinuous Galerkin (denoted DG) method is considered to achieve the objectives of accuracy and speed because DG brings flexibility in the discretization. Indeed, it is a nonconforming finite element method which allows in particular changing the polynomial approximation order from one element to another. Therefore, a new hybrid method is developed coupling the WCIP with volume numerical methods which offer more flexibility for dealing with complex environments. Finally, a domain decomposition solution strategy is also discussed at the end of the manuscript.
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https://tel.archives-ouvertes.fr/tel-01142791
Contributor : Caroline Girard <>
Submitted on : Wednesday, April 15, 2015 - 10:36:37 PM
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  • HAL Id : tel-01142791, version 1

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Caroline Girard. Hybridation de methodes numeriques pour l'etude de la susceptibilite electromagnetique de circuits planaires. Electromagnétisme. INP DE TOULOUSE, 2014. Français. ⟨tel-01142791⟩

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