Autonomous remote sensing with SAW devices

Ovidiu Iancu; Paul Schiopu; Adrian Manea; Ionica Cristea; Neculai Grosu

doi:10.1117/12.742073

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8 May 2007 Autonomous remote sensing with SAW devices

Ovidiu Iancu, Paul Schiopu, Adrian Manea, Ionica Cristea, Neculai Grosu

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Proceedings Volume 6635, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies III; 66350X (2007) https://doi.org/10.1117/12.742073
Event: Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies III, 2006, Bucharest, Romania

Abstract

In so rapidly growing sensing technology, Autonomous Surface Acoustic Waves (SAW) based sensors, offer high flexibility for modern identification/sensing systems, and represent a new perspective for remote monitoring and control. This paper gives a presentation of operating principles of wireless SAW sensors with separation in frequency (frequency domain division-FDD) and separation in time (time domain division-TDD). The design of interdigitated transducers (IDT), and reflectors on the different types of substrate materials as piezo crystals LiNbO₃, LiTaO₃ or quartz in connection with application domains is presented. A comparison between Time Domain Sampling-TDS and Frequency Domain Sampling-FDS principles of transmitter and receiver, gives evidence of their advantages and disadvantages. A part of the paper dealt with the measurement results.

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Ovidiu Iancu, Paul Schiopu, Adrian Manea, Ionica Cristea, and Neculai Grosu "Autonomous remote sensing with SAW devices", Proc. SPIE 6635, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies III, 66350X (8 May 2007); https://doi.org/10.1117/12.742073

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