Maximum accuracy evaluation scheme for wireless SAW delay-line sensors

Jan H. Kuypers; Leonhard M. Reindl; Shuji Tanaka; Masayoshi Esashi

doi:10.1109/TUFFC.2008.840

Maximum accuracy evaluation scheme for wireless SAW delay-line sensors

Jan H. Kuypers, Leonhard M. Reindl, Shuji Tanaka, Masayoshi Esashi

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

This paper describes an evaluation scheme that prevents phase ambiguity of surface acoustic wave (SAW) delay-line sensors. Although it is well-known that phase evaluation yields accuracies of 150-1500 times higher than time-delay evaluation, the problem of phase ambiguity has prevented phase evaluation of sensors operating over a range larger than 2π. This paper addresses this unsolved problem with a complete strategy. Furthermore, the existence of an optimum choice of the relative reflector positions on the sensor is shown. The presented relations enable the design of maximum accuracy SAW delay-line sensors.

Original language	English
Article number	4559662
Pages (from-to)	1640-1652
Number of pages	13
Journal	IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume	55
Issue number	7
DOIs	https://doi.org/10.1109/TUFFC.2008.840
Publication status	Published - 2008 Jul

ASJC Scopus subject areas

Instrumentation
Acoustics and Ultrasonics
Electrical and Electronic Engineering

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title = "Maximum accuracy evaluation scheme for wireless SAW delay-line sensors",

abstract = "This paper describes an evaluation scheme that prevents phase ambiguity of surface acoustic wave (SAW) delay-line sensors. Although it is well-known that phase evaluation yields accuracies of 150-1500 times higher than time-delay evaluation, the problem of phase ambiguity has prevented phase evaluation of sensors operating over a range larger than 2π. This paper addresses this unsolved problem with a complete strategy. Furthermore, the existence of an optimum choice of the relative reflector positions on the sensor is shown. The presented relations enable the design of maximum accuracy SAW delay-line sensors.",

author = "Kuypers, {Jan H.} and Reindl, {Leonhard M.} and Shuji Tanaka and Masayoshi Esashi",

note = "Funding Information: Manuscript received August 20, 2007; accepted January 24, 2008. This work was supported in part by the Strategic Information and Communications R&D Promotion Programme (SCOPE) from the Ministry of General Affairs (062302002).",

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