SAW Based Sensing System Coupled to a Thin Flexible Antenna for Biomedical Applications

Herein we present a compact sensing system based on a surface acoustic wave (SAW) device coupled to a thin flexible antenna for health monitoring. The system operates in the 2.4GHz ISM band. It provides interesting radiation characteristics when tattooed on the human skin and preserves a satisfactory behavior even when it is conformed to the deformations of the human body. In addition, the simulations show that the specific absorption rate (SAR) of this system respects the international standards and regulations for RF exposure, which makes it harmless to the human health.