Title :
Accurate round-trip delay-time estimator for simultaneous identification of multiple SAW ID tags
Author :
Klaffenbock, Maria ; Schuster, Stefan ; Scheiblhofer, Stefan ; Stelzer, Andreas
Author_Institution :
Inst. for Commun. & RF-Syst., Johannes Kepler Univ., Linz, Austria
Abstract :
In this paper an iterative method of accurate round-trip delay-time (RTDT) estimation is presented. Using this method, it is possible to take imperfections like amplitude and phase distortions into account and avoid biased RTDT estimates. Those accurate RTDT estimates are a prerequisite for precise grid estimation of pulse position coded surface acoustic wave tags as a fundament for further identification and the possibility of a grid refinement and/or larger reading ranges.
Keywords :
delay estimation; iterative methods; surface acoustic wave devices; RTDT estimation; amplitude distortion; grid estimation; iterative method; multiple-SAW ID tag identification; phase distortion; pulse position coded surface acoustic wave tags; round-trip delay-time estimator; Distortion measurement; Estimation; Phase distortion; Sensors; Signal to noise ratio; Surface acoustic waves; Temperature measurement;
Conference_Titel :
Ultrasonics Symposium (IUS), 2013 IEEE International
Conference_Location :
Prague
Print_ISBN :
978-1-4673-5684-8
DOI :
10.1109/ULTSYM.2013.0259
