DocumentCode
3116552
Title
Improved electronic readout circuit for resonant acoustic sensors
Author
Rocha, Daniel ; Ferrari, Vittorio ; Jakoby, Bernhard
Author_Institution
Inst. of Sensor & Actuator Syst., Vienna Univ. of Technol., Austria
fYear
2004
fDate
24-27 Oct. 2004
Firstpage
32
Abstract
A novel circuit for the compensation of the spurious admittance of TSM (thickness shear mode) resonator sensors is proposed. It compensates both the spurious capacitance and conductance, and as such is well suited for measurement in conductive liquids. Design equations, simulations and measurement results of a bread-boarded prototype are presented.
Keywords
acoustic resonators; acoustic transducers; chemical sensors; compensation; readout electronics; signal processing equipment; viscosity measurement; TSM; chemical sensors; conductive liquid measurement; electronic readout circuit; negative feedback; quadrature compensation; quadrature demodulator; resonant acoustic sensors; spurious admittance compensation; spurious capacitance compensation; spurious conductance compensation; thickness shear mode sensors; variable gain amplifiers; viscosity sensors; Acoustic measurements; Acoustic sensors; Admittance; Capacitance measurement; Circuit simulation; Conductivity measurement; Equations; Liquids; RLC circuits; Resonance;
fLanguage
English
Publisher
ieee
Conference_Titel
Sensors, 2004. Proceedings of IEEE
Print_ISBN
0-7803-8692-2
Type
conf
DOI
10.1109/ICSENS.2004.1426092
Filename
1426092
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