PIEZOELECTRIC-TRANSDUCER ENERGY HARVESTER, IN PARTICULAR FOR POWERING AN AUTONOMOUS CARDIAC CAPSULE, WITH AN ELECTRONIC CIRCUIT INTEGRATED IN THE OSCILLATING STRUCTURE
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United States of America Patent
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Issued Date -
Sep 19, 2024
app pub date -
Nov 14, 2023
filing date -
Mar 17, 2023
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Abstract
The harvester comprises a pendular unit comprising a beam that is elastically deformable in bending, a mount clamping a proximal end of the beam, and an inertial mass mounted at a free, distal end of the beam. The beam converts into an oscillating electric signal a mechanical energy produced by oscillations of the pendular unit. The piezoelectric beam comprises a flexible structure including: a central core; a piezoelectric layer on at least one face of the central core; and at least one surface electrode on an external face of the piezoelectric layer. The central core of the flexible structure is a semiconductor material adapted to form an integrated circuit substrate, and the flexible structure includes at least part of components of an electric or electronic unit, said components being monolithically integrated within the semiconductor material substrate.
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