Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Reexamination Certificate
2005-03-01
2005-03-01
Lobo, Ian J. (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
C367S162000, C367S181000
Reexamination Certificate
active
06862254
ABSTRACT:
The present invention provides a microfabricated acoustic transducer with suppressed substrate modes. The modes are suppressed by either thinning the substrate such that a longitudinal ringing mode occurs outside of the frequency band of interest or by applying a judiciously designed damping material on the backside of the transducer substrate.
REFERENCES:
patent: 4494091 (1985-01-01), Goll
patent: 4507582 (1985-03-01), Glenn
patent: 4528652 (1985-07-01), Horner et al.
patent: 5287331 (1994-02-01), Schindel et al.
patent: 5406163 (1995-04-01), Carson et al.
patent: 5619476 (1997-04-01), Haller et al.
patent: 5730113 (1998-03-01), Wildes et al.
patent: 5870351 (1999-02-01), Ladabaum et al.
patent: 5877580 (1999-03-01), Swierkowski
patent: 5894452 (1999-04-01), Ladabaum et al.
patent: 5982709 (1999-11-01), Ladabaum et al.
patent: 6004832 (1999-12-01), Haller et al.
patent: 6714484 (2004-03-01), Ladabaum et al.
patent: 199 28 596 (2000-01-01), None
Ladabaum et al., “Micromachined Ultrasonic Transducers (MUTs)” 1995 IEEE Ultrasonics Symposium, pp. 501-504.*
Jin et al., “Micromachined Capacitive Transducer Arrays for Medical Ultrasound Imaging,”1998 IEEE Ultrasonics Symposium, pp. 1877-1880.
Khuri-Yakub et al., “Silicon Micromachined Ultrasonic Transducers,”1998 IEEE Ultrasonics Symposium, pp. 985-991.
Sleva et al., “A Micromachined Poly(vinylidene fluoride-trifluoroethylene) Transducer for Pulse-Echo Ultrasound Applications,”IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, (1996) 43:257-262.
Ladabaum Igal
Wagner Paul A.
Lobo Ian J.
Pillsbury & Winthrop
Sensant Corporation
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