MICROFABRICATED ULTRASONIC TRANSDUCERS WITH BIAS POLARITY BEAM PROFILE CONTROL
摘要
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 effective way to achieve transmit aperture and apodization control. Further still, such capacitive microfabricated ultrasonic transducers can achieve elevation focus without the need of a lossy mechanical lens.
申请公布号
WO2004075165(B1)
申请公布日期
2006.04.27
申请号
WO2004US02740
申请日期
2004.01.29
申请人
SENSANT CORPORATION;DAFT, CHRISTOPHER, M., W.;WAGNER, PAUL, A.;LADABAUM, IGAL
发明人
DAFT, CHRISTOPHER, M., W.;WAGNER, PAUL, A.;LADABAUM, IGAL