Robust Design of SAW Gas Sensors by Taguchi Dynamic Method

Sensors (Basel). 2009;9(3):1394-408. doi: 10.3390/s90301394. Epub 2009 Feb 27.


This paper adopts Taguchi's signal-to-noise ratio analysis to optimize the dynamic characteristics of a SAW gas sensor system whose output response is linearly related to the input signal. The goal of the present dynamic characteristics study is to increase the sensitivity of the measurement system while simultaneously reducing its variability. A time- and cost-efficient finite element analysis method is utilized to investigate the effects of the deposited mass upon the resonant frequency output of the SAW biosensor. The results show that the proposed methodology not only reduces the design cost but also promotes the performance of the sensors.

Keywords: Dynamic Taguchi Method; Finite Element Method (FEM); Signal-to-Noise ratio; Surface Acoustic Wave (SAW).