HAN Tao, SHI Wen-kang . Application of Surface Acoustic Wave Devices in Wireless Measurement System[J]. Editorial Office of Optics and Precision Engineering, 2001,(6): 576-579
HAN Tao, SHI Wen-kang . Application of Surface Acoustic Wave Devices in Wireless Measurement System[J]. Editorial Office of Optics and Precision Engineering, 2001,(6): 576-579DOI:
Application of Surface Acoustic Wave Devices in Wireless Measurement System
it is difficult to implement a fixed connection between sensors and signal processing units
or it is necessary to resort to wireless information transmission because of bulky cable. Wireless sensor is one of the focuses in recent sensor research. Compared with modulation based radio sensors
the passive and telemetric surface acoustic wave (SAW) sensors are absolutely necessary in some special environment applications. In this paper
state of the art of SAW sensors is reviewed
and the principle of wireless SAW resonator sensor is presented. In addition
some detailed measures to improve the sensitivity of the sensor in SAW-device design and fabrication are discussed. The application in object identification and wireless information transmission for classical impedance sensor is also presented.
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references
Reindl L, Scholl G, Ostertag T. Theory and application of passive SAW radio transponders as sensors[J]. IEEE Trans. on UFFC,1998,45(4):1281-1291.
Steindl R, Pohl A, Reindl L,et al.SAW delay lines for wirelessly requestable conventional sensors[J].Proc. of the IEEE Ultrason.Symp, 1998,1:351-354.
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