EP 4189832 A1 20230607 - DEVICE AND SYNCHRONOUS METHOD FOR SUPPLYING POWER TO AN ULTRASOUND TRANSDUCER
Title (en)
DEVICE AND SYNCHRONOUS METHOD FOR SUPPLYING POWER TO AN ULTRASOUND TRANSDUCER
Title (de)
VORRICHTUNG UND SYNCHRONVERFAHREN ZUR STROMVERSORGUNG EINES ULTRASCHALLWANDLERS
Title (fr)
DISPOSITIF ET PROCÉDÉ SYNCHRONE D'ALIMENTATION D'UN TRANSDUCTEUR ULTRASONORE
Publication
Application
Priority
- FR 2008137 A 20200730
- EP 2021071505 W 20210730
Abstract (en)
[origin: WO2022023577A1] The invention relates to a method and a circuit (100) for driving and for supplying power to ultrasound transducers with a synchronous switched capacitor, controlled by a digital loop. This circuit (100) comprises a power interface (106) controlled by a multi-level square-wave or rectangular-wave signal generator (102). This device comprises a tuning circuit (104) that is controlled by a tuning control circuit (109) so as to exhibit a given natural frequency with the transducer. This matching typically comprises, at input, a series inductor (L1) and, at output, a controlled-connection (K1) capacitor (C1) connected in parallel with the transducer (302). This connection (K1) is controlled in accordance with a detected phase difference (Δφ12) observed between the input (φ1) and the output (φ2) of said inductor (L1). It is advantageously slaved so as to provide a phase difference with the value π/2. The invention furthermore relates to an ultrasound element, to an ultrasound head, and to an ultrasound imaging and/or processing system, in particular a medical one.
IPC 8 full level
H03F 3/187 (2006.01); A61B 8/00 (2006.01); B06B 1/02 (2006.01); H03F 3/217 (2006.01); H03F 3/68 (2006.01)
CPC (source: EP)
A61B 8/00 (2013.01); B06B 1/0253 (2013.01); H03F 3/187 (2013.01); H03F 3/2171 (2013.01); H03F 3/2175 (2013.01); H03F 3/68 (2013.01); B06B 2201/76 (2013.01); H03F 2200/261 (2013.01); H03F 2200/351 (2013.01); H03F 2200/378 (2013.01); H03F 2200/391 (2013.01)
Citation (search report)
See references of WO 2022023577A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022023577 A1 20220203; EP 4189832 A1 20230607; FR 3114707 A1 20220401; FR 3114707 B1 20230120; JP 2023541516 A 20231003
DOCDB simple family (application)
EP 2021071505 W 20210730; EP 21752484 A 20210730; FR 2008137 A 20200730; JP 2023506192 A 20210730