Antenna Design for Bio-Telemetry Applications

There are number of antennas required for a wireless body area network (WBAN) to perform different types of communications at different positions of body. Therefore to decrease the number of antennas, there is a need of antennas with flexibility of operation that is a single antenna should serves a purpose of more than one type of communication. In case of WBAN antenna is to be placed over body therefore shape of antenna should be adjustable according to the body. Most of the body parts are curved therefore flat antenna cannot follow the curvature of body and some of the part of antenna will be protruding, which can interfere the natural body movements. The curved shape antenna can follow the curvature of body therefore proposed antenna is made curved. The curved antenna discussed in this book is designed to be radiating at two frequencies 2.45 GHz and 5.8 GHz and modeling is done using CST software. The proposed antenna has less effect of radiations on body. The SAR value of antenna is 0.676 W/kg at 2.45 GHz and 0.294 W/kg at 5.8 GHz. These values of SAR are well below the limits for SAR in India.