A capacitive microfabricated ultrasonic transducer with control of elevation phase through alternating bias polarity is disclosed. Such control of elevation phase results in simple ultrasonic probes with excellent slice thickness attributes. Furthermore, tight spatial variation of phase results in an...http://www.google.fr/patents/US20040160144?utm_source=gb-gplus-shareBrevet US20040160144 - Microfabricated ultrasonic transducers with bias polarity beam profile control and method of operating the same
Microfabricated ultrasonic transducers with bias polarity beam profile ...
Numéro de demande: 10/367,106 Numéro de publication: US 2004/0160144 A1 Date de dépôt: 14 févr. 2003 Brevet délivré: US7087023 ( Date de délivrance 8 août 2006)
