Composite material with EMI shielding properties and process to produce it
摘要
說明書
Ei and Pi are the amplitude and the incident wave power (which arrives on the sample), Et and Pt are the same quantities transmitted through the sample. Thus, when the shielding is dB, 90% of the power of the incident wave is blocked by the sample; at 20 dB, 99%; at 30 dB, 99.9%; and at 40 dB, 99.99%. It is this latter value that constitutes the target shielding.
Without going into theoretical details, important parameters to consider for electromagnetic shielding are the material electrical conductivity (among others), the sample thickness and the incident wave frequency. In general, apart from a few exceptions, shielding tends to increases whenever one of these three parameters increases.
The results are provided in table 1
