Results 231 to 240 of about 121,086 (257)

Surface-acoustic-wave (SAW) flow sensor

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1991
The use of a surface-acoustic-wave (SAW) device to measure the rate of gas flow is described. A SAW oscillator heated to a suitable temperature above ambient is placed in the path of a flowing gas. Convective cooling caused by the gas flow results in a change in the oscillator frequency.
openaire   +2 more sources

An integrated SAW voltage sensor

IEEE 1988 Ultrasonics Symposium Proceedings., 2003
An integrated SAW (surface acoustic wave) voltage sensor is presented, based on the SAW oscillator system, with features such as high sensitivity, broad measuring range, high input impedance, and direct voltage-to-frequency conversion. The dual oscillator system possesses the additional advantage of temperature compensation.
M.J. Vellekoop, C.C.G. Visser
openaire   +1 more source

Carbon nanotube-based SAW sensors

2013 Spanish Conference on Electron Devices, 2013
Surface acoustic wave (SAW) gas sensors based on the use of carbon nanotube (CNT) networks as sensitive layers have been investigated for the detection of atmospheric gas pollutants: volatile organic compounds (VOCs), NO2, CO, and H2 . SAW sensor configuration consists of a delay line made on a piezoelectric substrate (ST -X cut quartz) and a sensitive
I Sayago, M J Fernandez, J L Fontecha, M C Horrillo, E Terrado, A Seral-Ascaso, E Munoz   +6 more
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SAW Graphic Sensor

1978 Ultrasonics Symposium, 1978
E. Dieulesaint, D. Royer, B. Thiriet, J.C. Ballegeer   +3 more
openaire   +1 more source

SAW Oscillator Pressure Sensors

1975 Ultrasonics Symposium, 1975
T.M. Reeder, D.E. Cullen, M. Gilden
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SAW sensors

Sensors and Actuators A: Physical, 1992
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PRESSURE SENSOR BASED ON SAW RESONATORS

Sensors and Microsystems, 2008
M Benetti, D Cannatà, F Di Pietrantonio, E Verona, C Marchiori, P Persichetti   +5 more
openaire   +3 more sources

Transponder antenna for SAW sensors

2008
In this paper, the design of an antenna for Radio Transponders (Tag) in wireless systems is presented. In particular, the antenna is part of a sensor unit based on the employment of a Surface Acoustic Wave (SAW) device. The matching between the SAWand the antenna on the Tag is a critical issue of the design, if no matching network are used in order to ...
POLEMI, Alessia, VINCETTI, Luca, ZOBOLI, Maurizio   +2 more
openaire   +1 more source

Long-distance SAW Sensor Interrogation

2022 IEEE International Ultrasonics Symposium (IUS), 2022
Dave. W. Greve, Jaaannath Devkota, Richard Pingree, Ruishu Wright   +3 more
openaire   +1 more source

High humidity enhanced surface acoustic wave (SAW) H2S sensors based on sol–gel CuO films

Sensors and Actuators B: Chemical, 2019
Dengji Li, Xiaotao Zu, Dongyi Ao
exaly