The copper wires, carbon fiber and polyester blended yarns in the structure of double plain inlaid knitted fabrics for designing electromagnetic wave absorbing screen by impedance match. In the study by experiment, the different effectiveness yams, the angle of sample’s direction would influence the performance of attenuation effect. From the results, the performance of carbon fiber blended screen is much more than copper wires screen. And the attenuation effect is increased with increasing the number of layers.
