Estimation of electric parameters for thin shielding sheets

We suggest an estimation method of the electric parameters for thin shielding sheets. In order to evaluate our estimation method, we estimated the electric parameters for the metallic materials which have known electric parameters, and evaluated our method. For the non-magnetic materials, the estimated relative permeability was the same as the nominal values. For the ferromagnetic materials, the estimated relative permeability varied 0% to 30% from the nominal values. For both types of materials, the estimated conductivities were 0% to 9.8% different from the nominal values. Next, we apply our estimation method to shielding sheets, and we can estimate the electric parameters for items such as thin cloths.