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

C. Droit | Zendy; G. Martin | Zendy; S. Ballandras | Zendy; J.M. Friedt | Zendy

Open Access

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

Author(s) -

C. Droit,

G. Martin,

S. Ballandras,

J.M. Friedt

Publication year - 2010

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.3402286

Subject(s) - narrowband , acoustics , signal (programming language) , frequency modulation , resonator , modulation (music) , radio frequency , amplitude modulation , amplitude , physics , computer science , optics , telecommunications , programming language

International audienceWe 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

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