EMF Shielding Effectiveness of Knitted Fabrics of Metallized Threads

The aim of the study is to clarify the EMF shielding effectiveness (SE) of textiles with metallized yarns depending on their combinations and the position of samples with respect to the radiation source. For developing of the samples 3 types of metallized threads were used. Single and double jersey samples were made with manual flat knitting machines (gauges E7 and E10). To measure SE, two methods were used. The samples were placed between the radiation source and the detector and radiated with frequencies of 1.161 GHz and 870 MHz. The average result of SE is 92 % for all knitted fabrics produced in this study.