Ultrasonic transmitting and receiving apparatus

Details Ultrasonic transmitting and receiving apparatus Ultrasonic transmitting and receiving apparatus

2005-08-02

2005-08-02

Chapman, John E. (Department: 2856)

Measuring and testing

Vibration

By mechanical waves

C600S447000

Reexamination Certificate

active

06923066

ABSTRACT:
An ultrasonic transmitting and receiving apparatus capable of scanning an object to be inspected in high density and in a short time by using nondiffracting beams. The ultrasonic transmitting and receiving apparatus includes: an ultrasonic transducer array including ultrasonic transducers arranged in a matrix form; a waveform information setting unit for setting waveform information to be used for transmitting a plurality of ultrasonic beams, each of which is synthesized by ultrasonic signals having amplitude and phase characteristics represented by Bessel function, within a predetermined period; and a drive signal generating unit for respectively generating drive signals for driving the ultrasonic transducers included in the ultrasonic transducer array on the basis of the waveform information set by the waveform information setting unit.

REFERENCES:
patent: 5720708 (1998-02-01), Lu et al.
patent: 6066099 (2000-05-01), Thomenius et al.
patent: 6179780 (2001-01-01), Hossack et al.
patent: 09-299370 (1997-11-01), None
Jian-yu Lu 2D and 3D High Frame Rate Imaging with Limited Diffraction Beams IEEE Transactions of Ultrasonics, Feroelectrics and Frequency Cotnrol, vol. 44, N.o 4, Jul. 1997.
Jian-yu Lu A Study Of Two-Dimensional Array Transducers for Limited Diffraction Beams IEE Transactions of Ultrasonics, Ferroelectrics and Frequency Control, vol. 41, No. 5, Sep. 1994.

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