Title :
2.4 GHz plaster antennas for health monitoring
Author :
Kellomäki, Tiiti ; Whittow, William G. ; Heikkinen, Jouko ; Kettunen, Lauri
Author_Institution :
Dept. of Electron., Tampere Univ. of Technol., Tampere
Abstract :
Commercial plaster material (polyacrylate) is used as an antenna substrate. Two 2.45 GHz patch antennas are introduced, both designed to be attached directly to the skin. Measured efficiencies are 70 % in free space and 60 % on-body. Measured on-body gains of each antenna are 6.2 and 1.4 dBi. Simulated 1 g specific absorption rates (SAR) of the two antennas are 2.3 W/kg and 1.6 W/kg using 1 W input power. 10 g SAR values are 0.6 W/kg and 1.2 W/kg. Antenna feeding using snap-on buttons is investigated and has been found useful.
Keywords :
UHF antennas; antenna feeds; biological effects of fields; condition monitoring; microstrip antennas; antenna feeds; commercial plaster material; frequency 2.45 GHz; health monitoring; patch antennas; plaster antennas; polyacrylate; specific absorption rates; Antenna feeds; Antenna measurements; Conducting materials; Extraterrestrial measurements; Medical services; Microstrip antennas; Monitoring; Process design; Skin; Specific absorption rate; Antennas; medical services; microstrip antennas;
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2
