2008 Volume 3 Issue 2 Pages 410-423
To use the pyrolysis residue of paper as an electromagnetic wave shielding structure, an appropriate compounding method was searched for along with a suitable uniting material. As a result, satisfactory strength and electroconductivity were obtained using emulsion resin. Then, we produced an electromagnetic wave shielding structure and examined its characteristics. The source of the electric wave was a cellular phone, and the reception circuit consisted of a germanium diode and a high-luminance light-emitting diode. A voltage depending on the strength of the electric wave is induced at both ends of the light-emitting diode. The reception circuit was places in the structure and the voltage induced at both ends of the light-emitting diode was measured. It was shown that the use of the shield resulted in an attenuation of about 18dB when the thickness of the wall of the structure was 8mm.
