液体の比誘電率推定の一方法

概要

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It is difficult to analyze the effectiveness of shielding sheets theoretically and to derive numerical values which are close to the measurement values. When calculating a numerical values, we have to consider the location of the observation point, because the distance from the source is sufficiently small in comparison with the wave length. In this research, we used a small electric dipole as the source and measured the shielding effectiveness (SE) with a shield box. For the numerical analysis, we modeled the material and shield box as thin homogeneous layers. Then, for calculating the electromagnetic field, we used the Sommerfeld integral that expresses a spherical wave as a composition of cylindrical waves. Using this numerical calculation, we estimated the relative dielectric constant of liquid materials. We evaluted the estimated electric parameters of liquid materials, comparing them with nominal values.
社団法人電気学会の論文
2005-04-01