Ultrasonic transducer with adjustable elevational aperture and m

Details Ultrasonic transducer with adjustable elevational aperture and m Ultrasonic transducer with adjustable elevational aperture and m

1995-11-29

1997-08-12

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Signal transducers

H04R 144

Patent

active

056572956

ABSTRACT:
An ultrasound transducer includes transducer segments having a non-uniform thickness layer of relaxor ferroelectric material and coupled to a source of biasing voltage thereto. The elevational aperture is controlled by varying biasing voltage applied to the layer of relaxor ferroelectric material.

REFERENCES:
patent: 4184094 (1980-01-01), Kopel
patent: 4205686 (1980-06-01), Harris et al.
patent: 4550607 (1985-11-01), Muslak et al.
patent: 4677981 (1987-07-01), Coursant
patent: 4686408 (1987-08-01), Ishiyama
patent: 4735096 (1988-04-01), Dorr
patent: 4736631 (1988-04-01), Takeuchi et al.
patent: 5097709 (1992-03-01), Masuzawa et al.
patent: 5163436 (1992-11-01), Saitoh et al.
patent: 5345139 (1994-09-01), Gururaja et al.
patent: 5396143 (1995-03-01), Seyed-Bolorforsh et al.
patent: 5410205 (1995-04-01), Gururaja
patent: 5415175 (1995-05-01), Hanafy et al.
patent: 5435314 (1995-07-01), Dias
patent: 5438554 (1995-08-01), Seyed-Bolorforsh et al.
patent: 5438998 (1995-08-01), Hanafy
T. Shrout et al., "Relaxor Ferroelectric Materials," IEEE 1990 Ultrasonics Symposium, pp. 711-720 (1990).
M. Takeuchi et al., "Medical Ultrasonic Probe Using Electrorestrictive-Ceramics/Polymer Composite," IEEE 1989 Ultrasonics Symposium, pp. 705-708 (1989).
D. Damjanovic et al., "Electrorestrictive and Piezoelectric Materials for Actuator Applications," J. of Intell. Mater. Syst. and Struct., vol. 3, pp. 190-208 (Apr. 1992).
H. Masuzawa et al., "Electrorestrictive Materials for Ultrasonic Probes in the Pb (Mg.sub.1/3 Nb.sub.2/3)O.sub.3 --PbTiO.sub.3 System," Japanese Journal of Applied Physics, vol. 28, pp. 101-104 (1989).

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