Title :
Estimator for reflective delay line-type SAW sensors
Author :
Viikari, Ville ; Kokkonen, Kimmo ; Meltaus, Johanna ; Seppa, Heikki
Author_Institution :
VTT Tech. Res. Centre of Finland, Espoo
fDate :
6/1/2009 12:00:00 AM
Abstract :
This correspondence presents an estimator for reflective delay line-type surface acoustic wave (SAW) sensors. The estimator is derived from an analytical model and its range of validity is discussed. The proposed estimator enables simultaneous access to several SAW sensors with time-orthogonal responses and it can be implemented in a computationally efficient way utilizing the fast Fourier transform algorithm. The estimator is experimentally verified and its performance is compared with that of a reference estimator.
Keywords :
fast Fourier transforms; surface acoustic wave delay lines; surface acoustic wave sensors; analytical model; delay line-type SAW sensor; fast Fourier transform algorithm; reference estimator; surface acoustic wave; time-orthogonal response; Acoustic sensors; Acoustic waves; Analytical models; Delay estimation; Delay lines; Fast Fourier transforms; Propagation delay; Surface acoustic waves; Acoustics; Computer-Aided Design; Equipment Design; Equipment Failure Analysis; Reproducibility of Results; Sensitivity and Specificity; Time Factors; Transducers;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2009.1170
