The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 2025
Filed:
Jul. 30, 2021
Universite Paris-saclay, Gif-sur-Yvette, FR;
Centre National DE LA Recherche Scientifique, Paris, FR;
Ming Zhang, Fontenay-sous-Bois, FR;
Nicolas Llaser, Fontenay-sous-Bois, FR;
UNIVERSITE PARIS-SACLAY, Gif-sur-Yvette, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris, FR;
Abstract
A method and circuit for driving and supplying power to ultrasonic transducers with synchronous switched capacity, controlled by digital loop. This circuit includes a power interface controlled by a multi-level square or rectangular signal generator. This device includes a tuning circuit which is controlled by a tuning control circuit to have, with the transducer, a determined natural frequency. Typically, this tuning includes at the input an inductor in series, and at the output a controlled connection capacitor mounted in parallel with the transducer. This connection is controlled according to a detected phase difference detected between the input and the output of the inductor. It is advantageously controlled to provide a phase difference equal to π/2. Also, an ultrasonic element, an ultrasonic head, and an ultrasonic imaging and/or processing system, especially medical.