Maloney and Smith Method for Modeling Debye-Media Thin Sheets in the FDTD Grid

The Maloney and Smith method used to account for sheets thinner than the cell size of the finite-difference time-domain (FDTD) method is extended to the case where both the sheet and the surrounding media are such dispersive Debye media as the Human Body tissues. The new method is then compared to t...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2021-04, Vol.69 (4), p.2209-2217
Main Authors: Alkandari, Afnan, Berenger, Jean-Pierre, Himeno, Ryutaro, Yokota, Hideo, Costen, Fumie
Format: Article
Language:English
Subjects:
Dispersive media
electromagnetic coupling
Finite difference methods
Finite difference time domain method
finite-difference time-domain (FDTD) methods
Incidence angle
Indexes
Mathematical model
Media
Permittivity
Plane waves
Reflection
reflection coefficient
Sheets
Time domain analysis
Tissues
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Summary:The Maloney and Smith method used to account for sheets thinner than the cell size of the finite-difference time-domain (FDTD) method is extended to the case where both the sheet and the surrounding media are such dispersive Debye media as the Human Body tissues. The new method is then compared to the simpler Luebbers and Kuntz method that was previously extended to Debye media. The comparison relies on the reflection and transmission of plane waves and on 3-D experiments. It is concluded that the Maloney and Smith method permits a better accuracy to be achieved. It provides accurate reflection and transmission whatever may be the incidence angle of the wave that strikes the sheet.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2020.3026485