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A number of wearable antennas suitable for implementation of UHF-RFID tags have been presented in the open scientific literature. All of them are characterized by a high sensitivity with respect to the coupling with the human body, both on the input matching and on the antenna efficiency. This work presents a numerical investigation performed over a couple of wearable, ungrounded, antennas configurations,...
The robustness of wearable UHF-band planar inverted-F antennas (PIFAs), with respect to body–antenna separation and human tissue dispersion, is addressed through numerical investigations. The main goal is gaining physical insights into the relationship between the grounded antenna performance and the distribution of the electric and magnetic energy densities in the antenna near-field region close...
In this paper, a multi antenna system mounted on a life jacket for human rescue Cospas Sarsat applications is described. The latter is intended to provide a earth to satellite SOS communication in case of shipwrecks or similar crashes and it is currently implemented in emergency devices like buoys. In the proposed work, two dipoles have been attached on different floating elements of a life jacket,...
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