High-resolution evaluation algorithms for SAW-identification tags

Andreas Stelzer; Markus Pichler; Stefan Schuster; Stefan Scheiblhofer; Robert Hauser

doi:10.1117/12.482819

1 August 2003 High-resolution evaluation algorithms for SAW-identification tags

Andreas Stelzer, Markus Pichler, Stefan Schuster, Stefan Scheiblhofer, Robert Hauser

Proceedings Volume 5049, Smart Structures and Materials 2003: Modeling, Signal Processing, and Control; (2003) https://doi.org/10.1117/12.482819
Event: Smart Structures and Materials, 2003, San Diego, California, United States

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.

Citation Download Citation

Andreas Stelzer, Markus Pichler, Stefan Schuster, Stefan Scheiblhofer, and Robert Hauser "High-resolution evaluation algorithms for SAW-identification tags", Proc. SPIE 5049, Smart Structures and Materials 2003: Modeling, Signal Processing, and Control, (1 August 2003); https://doi.org/10.1117/12.482819

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