Impact of Water on the Dielectric Properties of Papers in the Radiofrequency Domain

Considering its different interaction forms with cellulose, water is very problematic as we consider high frequencies electromagnetic applications of papers. Thereby, cellulosic materials exhibit high losses in the radiofrequency (RF) domain. In this paper, the RF dielectric behavior of different papers versus their moisture content is described and the huge impact of water upon losses is shown. We also present a three components effective medium theory that is able to describe and predict the impact of this water content.