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A Study of Evaluation of Electromagnetic Shielding
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| Yoshiyuki YOSHIMURA, Toshiharu MINAMIKAWA, Isamu NAGANO and Satoshi YAGITANI |
For the effective suppression of the electromagnetic wave, it is desirable
to investigate for the electro-magnetic wave propagation with a shielding
material by using numerical analysis. The purposes of this report are
to estimate electric parameters of thin shielding materials, and to solve
wave propagation with 3-dimensional object including this shielding material
by FDTD method. We propose a method to estimate unknown electric parameters
of shielding materials by the shielding effectiveness measurement system
and the theoretical calculation. The electric parameters are derived by
iterating theoretical calculations to fit with experimental results. Here,
the result of FDTD analysis by using obtained electric parameters is good
agreement with the experimental result, and this verifies the validity
of the developed method.
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Keywords ■■■ |
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electric constant，Sommerfeld integral，shielding
clothes，pacemaker，FDTD |
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