Results 211 to 220 of about 121,086 (257)

Unwired SAW sensors systems

Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005., 2005
Surface acoustic wave (SAW) devices can be used as identification and sensor elements (SAW transponders) for measuring physical, chemical and biological quantities such as temperature, pressure, torque, acceleration, humidity, etc. that do not need additional power supply for the sensor elements and may be accessed wirelessly.
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Passive wireless UV SAW sensor

Applied Physics A, 2020
This paper presents studies of a passive wireless ultraviolet (UV) surface acoustic wave (SAW) sensor operating in the frequency range 436–440 MHz. The sensor contains two SAW delay lines (DLs). The first DL is measuring, and the second is the reference.
G. Ya. Karapetyan, V. E. Kaydashev, M. E. Kutepov, T. A. Minasyan, V. A. Kalinin, V. O. Kislitsyn, E. M. Kaidashev   +6 more
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Remote sensor system using passive SAW sensors

Proceedings of IEEE Ultrasonics Symposium ULTSYM-94, 1994
The aim of this paper is to show the possibilities of combining the basic principles of SAW identification (ID) tags with the well known properties of SAW sensors. The concept of SAW ID-sensors created in this way has several advantages over other solutions with the most two important being that the sensors themselves do not require a separate energy ...
null Buff, null Plath, null Schmeckebier, null Rusko, null Vandahl, null Luck, null Moll, null Malocha   +7 more
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New capabilities for optimizing SAW gas sensors

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2001
It is shown how the performances of SAW gas sensors can be optimized based on pure acoustic peculiarities of SAW propagation in anisotropic single crystals. For a given gas and sensitive membrane, the calibration curve (dependence of the response R versus gas concentration n), the sensitivity S (slope of the calibration curve: S = dR/dn), the detection
VI Anisimkin, E Verona
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A miniaturized SAW-PIRANI sensor

2012 IEEE International Ultrasonics Symposium, 2012
SAW Pirani sensors are a promising solution for low pressure monitoring. We present here the first results obtained with a new packaging solution based on CSSP technology. Pressure sensitivity and good response time are demonstrated experimentally. A model is developed to account for the sensor's behavior, including an observed slow drift.
P. Nicolay, O. Elmazria, X. Perois
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Integrated 915MHZ OFC SAW sensors

2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON), 2010
The purpose of this paper is to present recent results on the integration of SAW orthogonal frequency coded (OFC) wireless sensors into a unified sensor target at 915MHz. Current proof of concept embodiments at 250MHz and 915MHz have been successful in demonstrating a functional sensor design and working interrogation system. However, previous work has
Gallagher, Mark W., Santos, Bianca C., Malocha, Donald C.   +2 more
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SAW resonators as vapor sensors

IEEE Symposium on Ultrasonics, 2002
The application of SAW (surface acoustic wave) resonators as substance-of-abuse vapor sensors is described. High-Q SAW resonators configured as vapor/mass detectors are an optimally sensitive SAW geometry. The SAW resonator is able to achieve sensitivities approaching femtogram levels and exhibits a nearly true fourth-order sensitivity vs.
G. Watson, E. Staples
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A review of wireless SAW sensors

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2000
Wireless measurement systems with passive surface acoustic wave (SAW) sensors offer new and exciting perspectives for remote monitoring and control of moving parts, even in harsh environments. This review paper gives a comprehensive survey of the present state of the measurement systems and should help a designer to find the parameters required to ...
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SAW sensors for harsh environments

IEEE Sensors Journal, 2001
Surface acoustic wave (SAW) sensors are rugged components made on highly stable substrate materials. In addition, by their operating principle they lend themselves to wireless readout by radio signals. For these reasons, they are a first choice for sensing in harsh environments. A review is given on SAW device design, instrumentation of sensor systems,
Wolff, Ulrich, Dickert, Franz, Fischerauer, Gerhard, Greibl, Wolfgang, Ruppel, Clemens C W   +4 more
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SAW-RFID enabled temperature sensor

Sensors and Actuators A: Physical, 2013
Abstract Wireless sensors based on surface acoustic wave (SAW) technology has its own advantages over its counterparts. In this paper, a novel SAW radio frequency identification (RFID) enabled temperature sensor is proposed for industrial applications, in which short measurement range but high accuracy is usually required. The encoding scheme for the
Along Kang, Chenrui Zhang, Xiaojun Ji, Tao Han, Ruisheng Li, Xianwei Li   +5 more
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