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Communication Dans Un Congrès Année : 2015

Dispersion analysis in time-domain simulation of complex dispersive media

Michel Ney
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Résumé

Inherent to time-domain method that use space-time discretization, the model dispersion produces field propagation velocity error. In methods such as finite-differences or TLM in time domain, it is customary to choose a maximum mesh size of one tenth of the minimum operating wavelength. If this criterion is easily applicable for normal ordinary media, it is more ambiguous to give interpretation of the wavelength when dealing with complex media such as anisotropic and/or dispersive (frequency dependent) media. After describing the procedure to evaluate dispersion in such media, the paper shows examples for which the simple rule underestimates the maximum mesh size and, consequently, increases the computing expenditure.
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Dates et versions

hal-01387223 , version 1 (25-10-2016)

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Citer

Abdelrahman Ijjeh, Michel Ney, Francesco Andriulli. Dispersion analysis in time-domain simulation of complex dispersive media. NEMO 2015 : IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, Aug 2015, Ottawa, Canada. pp.1 - 4, ⟨10.1109/NEMO.2015.7415016⟩. ⟨hal-01387223⟩
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