ULTRASOUND TRANSDUCER DEVICE AND METHOD FOR CONTROLLING THE SAME

The invention provides an ultrasound transducer device (20) comprising an electroactive polymer (EAP) element (26) coupled atop a capacitive micromachined ultrasonic transducer, CMUT, element (22), wherein the two elements are controlled to vibrate concurrently at a common frequency by application t...

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Bibliographische Detailangaben
Hauptverfasser:	JOHNSON, Mark Thomas, SHULEPOV, Sergei, VAN DEN ENDE, Daan Anton, HAKKENS, Franciscus Johannes Gerardus, DIRKSEN, Peter
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR ELECTRICITY FOR PERFORMING MECHANICAL WORK IN GENERAL GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES MEASURING METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PERFORMING OPERATIONS PHYSICS SOUND-PRODUCING DEVICES TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention provides an ultrasound transducer device (20) comprising an electroactive polymer (EAP) element (26) coupled atop a capacitive micromachined ultrasonic transducer, CMUT, element (22), wherein the two elements are controlled to vibrate concurrently at a common frequency by application to each of a drive signal of the same AC frequency. L'invention concerne un dispositif transducteur ultrasonore (20) comprenant un élément polymère électro-actif (EAP) couplé au-dessus d'un élément transducteur ultrasonore micro-usiné capacitif (22) (CMUT), les deux éléments étant commandés pour vibrer simultanément à une fréquence commune par application à chacun d'un signal d'attaque de la même fréquence alternative.