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An unconditionally stable FDTD method based on wave equation
Author(s) -
Lin Hai,
Wang Gaofeng,
Liang Feng
Publication year - 2009
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.24101
Subject(s) - finite difference time domain method , laguerre polynomials , microwave , mathematics , scheme (mathematics) , wave equation , mathematical analysis , computer science , physics , telecommunications , optics
An unconditionally stable finite‐difference time‐domain (US‐FDTD) method based on wave equation is introduced by making use of Laguerre polynomials as basis functions for expanding field components in time. This new wave‐equation‐based FDTD scheme is not only unconditionally stable but also requires less memory usage. Comparisons among the traditional FDTD, the conventional Laguerre‐polynomial US‐FDTD, and this proposed scheme are presented in the numerical examples in terms of the memory usage and computational time. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 529–532, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24101