A reconfigurable layout for a self-structuring life-jacket-integrated antenna of a SAR system

A reconfigurable layout to implement a self-structuring wearable antenna for the local user terminal of a Search and Rescue system (Cospas-Sarsat at 406MHz) is presented. The proposed antenna layout has been designed for integration on a commercial life jacket for use in a maritime environment. The shape of the antenna can be reconfigured by means of RF switches to ensure the best possible transmission conditions, in terms of overall antenna efficiency, even if part of the antenna goes under the sea level. The shape of the components of the self-structuring antenna has been optimized for different antenna positions with respect to the water level and immersion angles.