No.9（2014）9.Preparation of the electromagnetic wave suppressing sheet using a conductive material

Takeshi Ueno, Hidekatsu Sasaki, Manabu Oomori

  Electromagnetic wave suppression sheet used to suppress electromagnetic compatibility of gigahertz region were prepared. Coating calligraphy liquid filter paper, is intended to impart conductivity to the sheet and dried, it was possible to achieve suppression sheet inexpensive and can be produced easily. Measurement of the coaxial tube method and a four-probe method, the conductivity of the sheet is increased by raising the concentration of the solution calligraphy. The measurement of the micro-strip line method, the effect of suppressing the transmission signal is higher sheet has high conductivity. The measurement results of the similar, there is the effect of suppressing the harmonics derived from the signal has the characteristics of the low-pass filter, and transmits a signal of several hundred MHz to suppression sheet.

Keywords
EMC, Electromagnetic wave suppressing sheet

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