Study on electromagnetic shielding properties of conductive sheets

Radiations from different electrical devices cause electromagnetic interference which will influence the performance realization of other electromagnetic device and cause the health concerns. The conductive sheets used for electromagnetic shielding were constructed by sandwiching the resinated brass fibers with decorative papers on both sides. The electromagnetic shielding effectiveness of the conductive sheets was evaluated. And the prediction model for electromagnetic shielding properties of conductive sheets was fitted. The results showed that the electromagnetic shielding effectiveness of the conductive sheets was improved with the increasing use of the brass fibers. The conductive sheets (250 g/m²) met the shielding requirements for a commercial electromagnetic shielding product. Again, the determined correlation coefficient (R-square) of prediction model was found to be 0.870. It was indicated that the agreement of theoretical and experimental values was good. The shielding mechanism of conductive sheets was reflected by the model.