Study on frequency selective/absorption/reflection multilayer composite flexible electromagnetic wave absorbing fabric

In order to realize wide-band, high-efficiency and flexible electromagnetic wave absorption, an effective method is the combination of different functional materials. How use make multilayer materials with individual reflection selective transmission characteristics very important. this work, composite absorbing fabrics made a frequency surface (FSS), carbonyl iron coated (CIFs) copper-nickel plated conductive woven (CWFs) were prepared. The layered have thin thickness, good flexibility adjustable absorption band, which provide reference for development lightweight efficient influence resonance point, absorbent content layer on properties studied. CIF-3 density 2046.9 g/m 2 has best performance minimum reflectivity –20.52 dB at 12.56 GHz. A one-layer FSS can broaden bandwidth; broadening degree varies point FSS, also makes band adjustable. bandwidth f 12 /CIF-3 less than –10 reach 5.68 Besides, CWF beneficial increase intensity, CIF-3/CWF –27.73 dB. Furthermore, three-layer composites improve strength CIF low frequency. Compared CIF-3, 14 /CIF-3/CWF decreases 8.06 11.28 GHz, 4.72 widens by 0.32