Shielding behaviour of conducting polymer-coated fabrics in X-band, W-band and radio frequency range

Electromagnetic interference response of conducting polyaniline coated fabrics in the microwave range W band RFI range as well as in UV-Vis-NIR range has been studied In the radio frequency range from 100 to 1000 MHz conducting polyaniline coated fabrics shows a shielding effectiveness in the range 30-40 dB Shielding effectiveness of the conducting fabrics in W band region at 101 GHz shows an attenuation of 35-61 dB The microwave reflectance studies of the coated fabrics in 8-12 GHz range shows that conducting fabrics gives shielding effectiveness value of -3 to -11 dB The reflectance studies of conducting polyaniline coated fabric shows that 98% of the energy is absorbed in the UV-Vis-NIR range and 2% is reflected back In polypyrrole coated fabric 96% of energy is absorbed and 4% is reflected back whereas in substituted polythiophene coated fabric 82% of the energy is absorbed and 18% is reflected back (C) 2002 Elsevier Science B.V. All rights reserved.