Note: A frequency modulated wireless interrogation system exploiting narrowband acoustic resonator for remote physical quantity measurement

Abstract : We demonstrate the wireless conversion of frequency modulation to amplitude modulation by radio frequency resonators as means of accurately determining the resonance frequency of passive acoustoelectronic sensors. The emitted frequency modulated radio frequency pulses are generated by a pulsed radar for probing a surface acoustic wave based sensor. The sharp sign transition of the amplitude modulated received signal provides a signal on which a feedback loop is locked to monitor the resonance signal. The strategy is demonstrated using a full software implementation on a generic hardware, resulting in 2 Hz resolution at 1 s integration time limited by the proportional feedback loop.
Document type :
Journal articles
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-00485080
Contributor : Sarah Djaouti <>
Submitted on : Thursday, May 20, 2010 - 8:58:35 AM
Last modification on : Friday, July 6, 2018 - 3:06:08 PM

Identifiers

Citation

C. Droit, G. Martin, S. Ballandras, J.-M. Friedt. Note: A frequency modulated wireless interrogation system exploiting narrowband acoustic resonator for remote physical quantity measurement. Review of Scientific Instruments, American Institute of Physics, 2010, 81 (5), pp.3402286. ⟨10.1063/1.3402286⟩. ⟨hal-00485080⟩

Share

Metrics

Record views

154