High resolution evaluation algorithms for SAW-identification tags
Sprache des Titels:
Englisch
Original Buchtitel:
Proc. SPIE's 10th Smart Structures and Materials Symposium
Original Kurzfassung:
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.
Forschungs-