Remote Control of SAW Resonators Using a Frequency-Modulation-Based Interrogation Strategy

Abstract : Within the context of probing acoustic wave resonators acting as wireless, passive sensors, we present a strategy for wireless monitoring of surface acooustic wave (SAW) resonators using a frequency modulation based interrogation method. The basic principle is the conversion of frequency modulation to amplitude modulation by the resonator through its S-11 transfer function. An ARM-7 based central processing unit synchronizes the narrow-band probing pulse emission, emission to reception switching, data sampling and data processing. A closed loop control keeps the emitted carrier frequency at the resonance frequency of the sensor: we demonstrate a resolution of 2 Hz on the resonance freqeuncy identification at 1 s integration time, limited by this proportional feedback loop.
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-00589216
Contributor : Sarah Djaouti <>
Submitted on : Thursday, April 28, 2011 - 9:23:22 AM
Last modification on : Friday, July 6, 2018 - 3:06:08 PM

Identifiers

  • HAL Id : hal-00589216, version 1

Citation

C. Droit, J.-M. Friedt, G. Martin, S. Ballandras. Remote Control of SAW Resonators Using a Frequency-Modulation-Based Interrogation Strategy. 2010 IEEE International Frequency Control Symposium, Jun 2010, New Port Beach, United States. pp.503-510. ⟨hal-00589216⟩

Share

Metrics

Record views

119