Water effects on Body-Centric communication radio channel

Abstract

Nowadays, the trend in communication technology is
gathering clothing with electronic technology. There are two
factors despite each others, the convenient of On-Body antennas
power supply on the cloth and the power combined with the
biological lossy tissues for the human; therefore, efficiency is
important when considering Body-Centric communication
systems. In this work, the experiments conducted in the study of
Off-Body radio with water in the channel are described. To
manage the searching properties of water two techniques were
studies. The first was a simulation of multilayeres human model
with and without a water layer in aspect of transmission
coefficient and antenna reflection, the second was to use a gel to
absorb water, Polyacrylamide, within special box underneath the
On -Body antenna measuring the s11 in frequency 2.1 GHz