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Título: Numerical Dispersion Relation for the 2-D LOD-FDTD Method in Lossy Media
Autor: Pereda, José
Grande Sáez, Ana María
Año del Documento: 2017
Editorial: Institute of Electrical and Electronics Engineers (IEEE)
Descripción: Producción Científica
Documento Fuente: IEEE Antennas and Wireless Propagation Letters, 2017, Volume 16, pp. 2122-2125
Resumen: A closed-form expression is derived for the numerical dispersion relation of the 2-D locally one-dimensional finite-difference time-domain (LOD-FDTD) method in lossy media. In contrast to the lossless formulation, we found that transverse-electric (TEz) and transverse-magnetic (TM z ) waves in lossy media exhibit different numerical dispersion relations. Moreover, when the material relaxation-time constant is not well resolved by the integration time-step, the TM z case shows much worse accuracy than the TE z case. To remove this limitation, a split-field LOD-FDTD formulation for TM z waves is then considered, which exhibits the same dispersion relation as the LOD-FDTD method for TE z waves. The validity of the theoretical results is illustrated through numerical simulations.
ISSN: 1536-1225
Revisión por Pares: SI
DOI: https://doi.org/10.1109/LAWP.2017.2699692
Patrocinador: Ministerio de Economía, Industria y Competitividad and the European Commission (ERDF) (Projects TEC2014-55463-C3-2-P and TEC2014-55463-C3-3-P)
Version del Editor: https://ieeexplore.ieee.org/document/7914749
Propietario de los Derechos: © 2017 IEEE
Idioma: eng
URI: http://uvadoc.uva.es/handle/10324/33610
Derechos: info:eu-repo/semantics/openAccess
Aparece en las colecciones:DEP22 - Artículos de revista

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