Loss-reduction technique for SAW gas sensor with self-temperature-compensation characteristics used in sensor network

We previously proposed a SAW gas sensor with self temperature-compensation characteristics used in sensor network. However, sensor nodes operate under extreme low power consumption, which requires dramatic loss reduction for SAW delay-line sensors. We have invented new loss-reduction technique for SAW delay lines keeping the self-temperature compensation characteristics. We will illustrate features of newly proposed SAW delay-line structures comparing them with results of the previously developed delay line.