Communications – electrical: acoustic wave systems and devices – Transmitter systems – With beam forming – shaping – steering – or scanning
Patent
1995-03-02
1997-03-04
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Transmitter systems
With beam forming, shaping, steering, or scanning
367 7, 367 11, H04B 102
Patent
active
056086903
ABSTRACT:
A transmit beamformer includes multiple transducers, each responsive to a respective transmit waveform to produce a respective transducer waveform. A transmit waveform generator generates the transmit waveforms, and the transmit waveforms each include multiple frequency components. Progressively higher frequency components of the transmit waveforms are timed to cause corresponding progressively higher frequency components of the transducer waveforms to focus along a line at progressively shorter ranges. In this way, a frequency dependent line focus is achieved.
REFERENCES:
patent: 3953825 (1976-04-01), Kino et al.
patent: 4016750 (1977-04-01), Green
patent: 4140022 (1979-02-01), Maslak
patent: 4395912 (1983-08-01), Hassler
patent: 4403311 (1983-09-01), Tournois
patent: 4403314 (1983-09-01), Tournois
patent: 4446740 (1984-05-01), Wilson et al.
patent: 4456982 (1984-06-01), Tournois
patent: 4458342 (1984-07-01), Tournois
patent: 4550607 (1985-11-01), Maslak et al.
patent: 4699009 (1987-10-01), Maslak et al.
patent: 4870971 (1989-10-01), Russell et al.
patent: 4974558 (1990-12-01), Katakura et al.
patent: 5014712 (1991-05-01), O'Donnell
patent: 5105814 (1992-04-01), Drukarey et al.
patent: 5113706 (1992-05-01), Pittaro
patent: 5142649 (1992-08-01), O'Donnell
patent: 5218869 (1993-06-01), Pummer
patent: 5228007 (1993-07-01), Murakami et al.
patent: 5235982 (1993-08-01), O'Donnell
patent: 5301674 (1994-04-01), Erikson et al.
patent: 5322068 (1994-06-01), Thiele et al.
P. Tournois; "Acoustical Imaging Via Coherent Reception of Spatially Coloured Transmissions"; 1980 Ultrasonics Symposium; pp. 747-750.
"Synthesis of the driving functions of an array for propagating localized wave energy", J.E. Hernandez et al, J. Acoust. Soc. Am. 92 (1), Jul. 1992, pp. 550-562.
"Simulated Capillary Blood Flow Measurement Using a Nonlinear Ultrasonic Contrast Agent", B. Schrope et al., Ultrasonic Imaging 14, pp. 134-158 (1992).
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 37, No. 5, Sep. 1990, "Ultrasonic Nondiffracting Transducer for Medical Imaging", Jian-Yu Lu et al., pp. 438-447.
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 39, No. 3, May 1992, "Experimental Verification of Nondiffracting X Waves", Jian-yu Lu et al., pp. 441-446.
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 39, No. 1, Jan. 1992, "Non-diffracting X Waves-Exact Solutions to Free-Space Scalar Wave Equation and Their Finite Aperture Realizations", Jian-yu Lu et al., pp. 19-31.
Synchronous Dynamic Focusing for Ultrasound Imaging; G. Manes, et al.; IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 35, No. 1, Jan. 1988; pp. 14-21.
Properties of Swept FM Waveforms in Medical Ultrasound Imaging; C.R. Cole; 1991 Ultrasonics Symposium, pp. 1243-1248.
Frequency Synthesis by Phase Lock; William F. Egan, Ph.D., Senior Engineering Specialist GTE Products Corporation; Lecturer in Electrical Engineering University of Santa Clara, Robert E. Krieger Publishing Company, Malabar, Florida 1990; pp. 14-29.
Stanford Research Systems; Synthesized Function Generator; Model DS345-30 MHz Function & Arbitrary Waveform Generator; 1994; pp. 8-13.
Stanford Research Systems; Scientific and Engineering Instruments 1994-1995; pp. 171-176.
Cole Christopher R.
Hossack John A.
Mo Jian-Hua
Acuson Corporation
Pihulic Daniel T.
LandOfFree
Transmit beamformer with frequency dependent focus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transmit beamformer with frequency dependent focus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmit beamformer with frequency dependent focus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2152212