Singularity Problem with the One-sheet Huygens Subgridding Method

Hayder Al-Tameemi, Jean Pierre Bérenger, Fumie Costen

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    Abstract

    The Huygens subgridding (HSG) relies on the connection of two FDTD grids by means of Huygens surfaces. An earlier work has presented that the Huygens surfaces can be reduced to one sheet of current in place of the usual two sheets.
    This letter shows that the resulting simplified HSG may be at the origin of inaccuracy in the computed results because of the singularity of the field at edges of perfect electric or magnetic conductors. The difficulty can be easily overcome in
    two dimensions but not easily in three dimensions where it is preferable to use the one sheet implementation only for the outer Huygens surface.
    Original languageEnglish
    Pages (from-to)992-995
    Number of pages4
    JournalIEEE Transactions on Electromagnetic Compatibility
    Volume5
    Issue number3
    Early online date16 Nov 2016
    DOIs
    Publication statusPublished - Jun 2017

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