<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>this paper presents a wireless surface acoustic wave (SAW) pressure sensor on 41<sup>o</sup>YX LiNbO3 for tire pressure monitoring system (TPMS) application, in which a reflective delay line composed of an interdigital transducer (IDT) and several reflectors was used as the sensor element. Using the coupling of modes (COM), the SAW reflective delay line was simulated, and the optimal design parameters were determined. The fabricated 2.4GHz SAW sensor was wirelessly characterized by the network analyzer. Sharp reflection peaks, few spurious signals, and relatively high signal-to-noise (S/N) ratio were observed. High sensitivity of 2.9 deg/kPa and good linearity were observed.</p></abstract>

this paper presents a wireless surface acoustic wave (SAW) pressure sensor on 41oYX LiNbO3 for tire pressure monitoring system (TPMS) application, in which a reflective delay line composed of an interdigital transducer (IDT) and several reflectors was used as the sensor element. Using the coupling of modes (COM), the SAW reflective delay line was simulated, and the optimal design parameters were determined. The fabricated 2.4GHz SAW sensor was wirelessly characterized by the network analyzer. Sharp reflection peaks, few spurious signals, and relatively high signal-to-noise (S/N) ratio were observed. High sensitivity of 2.9 deg/kPa and good linearity were observed.

Sensitivity Improvement of Wireless Pressure Sensor by Incorporating a Saw Reflective Delay Line

International Journal on Smart Sensing and Intelligent Systems

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

this paper presents a wireless surface acoustic wave (SAW) pressure sensor on 41oYX LiNbO3 for tire pressure monitoring system (TPMS) application, in which a...

Sensitivity Improvement of Wireless Pressure Sensor by Incorporating a Saw Reflective Delay Line

Published Online: Nov 02, 2017

Page range: 940 - 954

DOI: https://doi.org/10.21307/ijssis-2017-329

Keywords
coupling of modes, interdigital transducer, LiNbO, piezoelectric substrate, reflective delay line, surface acoustic wave, wireless pressure sensor, temperature compensation

© 2008 Haekwan Oh et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Sensitivity Improvement of Wireless Pressure Sensor by Incorporating a Saw Reflective Delay Line

Published Online: Nov 02, 2017

Page range: 940 - 954

DOI: https://doi.org/10.21307/ijssis-2017-329

Keywordscoupling of modes, interdigital transducer, LiNbO, piezoelectric substrate, reflective delay line, surface acoustic wave, wireless pressure sensor, temperature compensation

© 2008 Haekwan Oh et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
coupling of modes, interdigital transducer, LiNbO, piezoelectric substrate, reflective delay line, surface acoustic wave, wireless pressure sensor, temperature compensation