Optimization of Interrogation Signal for SAW-resonator-based Vibration Sensor

Merkulov, Andrey; Ignat'ev, Nikita O.; Shvetsov, A.; Zhgoon, Sergei; Lipshits, Ksenia E.

doi:10.1109/reepe53907.2022.9731467

Cited by 4 publications

(1 citation statement)

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“…In the scientific literature, the dependences of the resonator response signal on the carrier frequency, the pulse period, the duration of the readout signal and the distance to the reader device, as well as on the modulation spectrum of the physical quantity to be measured have been analyzed numerically and experimentally [ 26 , 27 , 28 ]. However, an analytical model is still missing.…”

Section: Introductionmentioning

confidence: 99%

Optimal Excitation and Readout of Resonators Used as Wireless Passive Sensors

Reindl,

Aftab,

Gidion

et al. 2024

Sensors

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Resonators are passive time-invariant components that do not produce a frequency shift. However, they respond to an excitation signal close to resonance with an oscillation at their natural frequencies with exponentially decreasing amplitudes. If resonators are connected to antennas, they form purely passive sensors that can be read remotely. In this work, we model the external excitation of a resonator with different excitation signals and its subsequent decay characteristics analytically as well as numerically. The analytical modeling explains the properties of the resonator during transient response and decay behavior. The analytical modeling clarifies how natural oscillations are generated in a linear time-invariant system, even if their spectrum was not included in the stimulation spectrum. In addition, it enables the readout signals to be optimized in terms of duration and bandwidth.

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Section: Introductionmentioning

confidence: 99%