Communication Dans Un Congrès Année : 2024

An Efficient Acoustic Power Transfer Using a Self-Biased Electrostatic MEMS Transducer

Résumé

This paper presents the analysis, design and experimental characterisation of an electronic circuit that raises capacitive MEMS transducers to the level of piezoelectric transducers for acoustic energy transfer through the skin. Capacitive micromachined ultrasonic transducers (CMUTs) are competitive with commonly used piezoelectric transducers. However, as their efficiency depends on their static bias voltage (typically 40∼120 V), they are not commonly used in body implanted devices. This work proposes a discrete electronic circuit that builds a 60 V bias voltage from a 2.2 V battery voltage and charges the same battery with an ultrasonic-to-electrical energy conversion efficiency of 16.6%.

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Dates et versions

hal-04923370 , version 1 (31-01-2025)

Identifiants

Citer

Paul Roche, Kevin Nadaud, Dimitri Galayko, Samuel Callé, Jean-Charles Le Bunetel, et al.. An Efficient Acoustic Power Transfer Using a Self-Biased Electrostatic MEMS Transducer. 2024 IEEE 23rd International Conference on Micro and Miniature Power Systems, Self-Powered Sensors and Energy Autonomous Devices (PowerMEMS), Nov 2024, Tonsberg, Norway. pp.26-29, ⟨10.1109/PowerMEMS63147.2024.10814349⟩. ⟨hal-04923370⟩
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