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Proceedings Paper

High-resolution evaluation algorithms for SAW-identification tags
Author(s): Andreas Stelzer; Markus Pichler; Stefan Schuster; Stefan Scheiblhofer; Robert Hauser
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Paper Abstract

The use of surface acoustic wave (SAW) devices is a widely adopted method for implementing unique identification tags that operate completely passively and can be interrogated wirelessly. Interrogation can be done in the time- or frequency-domain, where in the latter case bandwidth is a restraining factor. Conventional signal evaluation is based on the fast Fourier transformation (FFT), which suffers from resolution limitations. Modern model-based frequency estimators have been investigated for SAW ID-tag identification. A state-space algorithm is applied to measured data and compared to FFT evaluation results.

Paper Details

Date Published: 1 August 2003
PDF: 8 pages
Proc. SPIE 5049, Smart Structures and Materials 2003: Modeling, Signal Processing, and Control, (1 August 2003); doi: 10.1117/12.482819
Show Author Affiliations
Andreas Stelzer, Johannes Kepler Univ. Linz (Austria)
Markus Pichler, Linz Ctr. of Mechatronics GmbH (Austria)
Stefan Schuster, Johannes Kepler Univ. Linz (Austria)
Stefan Scheiblhofer, Johannes Kepler Univ. Linz (Austria)
Robert Hauser, Carinthian Tech Research (Austria)

Published in SPIE Proceedings Vol. 5049:
Smart Structures and Materials 2003: Modeling, Signal Processing, and Control
Ralph C. Smith, Editor(s)

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