2.4 GHz Plaster Antennas for Health Monitoring
Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany
Proceedings: EuCAP 2009
Pages: 5Language: englishTyp: PDF
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Authors:
Kellomäki, Tiiti; Heikkinen, Jouko; Kettunen, Lauri (Department of Electronics, Tampere University of Technology, P.O.Box 692, FI-33101 Tampere, FINLAND)
Whittow, William G. (Department of Electronic and Electrical Engineering, Loughborough University, Loughborough, Leics, UK, LE11 3TU)
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.