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The Finite-Difference Time-Domain Method

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Abstract

The Finite-Difference Time-Domain (FDTD) method provides a direct integration of Maxwell’s time-dependent equations. During the past decade, the FDTD method has gained prominence amongst numerical techniques used in electromagnetic analysis. Its primary appeal is its remarkable simplicity. Furthermore, since the FDTD is a volume-based method, it is exceptionally effective in modeling complex structures and media. However, the distinct feature of the FDTD method, in comparison to the Method of Moments (MoM) and the Finite Elements Method (FEM) (see Chapters 4 and 5) is that it is a time-domain technique. This implies that one single simulation results in a solution that gives the response of the system to a wide range of frequencies. The time-domain solution, represented as a temporal waveform, can then be decomposed into its spectral components using Fourier Transform techniques. This advantage makes the FDTD especially wellsuited for most EMI/EMC problems in which a wide frequency range is intrinsic to the simulation.

Keywords

  • Field Component
  • Transverse Electric
  • Perfectly Match Layer
  • Absorb Boundary Condition
  • FDTD Method

These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Archambeault, B., Ramahi, O.M., Brench, C. (1998). The Finite-Difference Time-Domain Method. In: EMI/EMC Computational Modeling Handbook. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-5124-6_3

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  • DOI: https://doi.org/10.1007/978-1-4757-5124-6_3

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