Title :
Steering of limited diffraction beams with a two-dimensional array transducer
Author :
Lu, Jim-Yu ; Greenleaf, James F.
Author_Institution :
Dept. of Phys. & Biophys., Mayo Clinic & Found., Rochester, MN, USA
Abstract :
The production and steering of limited diffraction beams with a two-dimensional array are studied. Results show that good limited diffraction beams can be produced if the size of the array elements is small and the array aperture is compensated so that the projection of the aperture on a plane perpendicular to the beam axis is a constant annular ring pattern. The electronic system for controlling the two-dimensional array is described, and methods to simplify it are proposed
Keywords :
acoustic arrays; acoustic generators; focusing; ultrasonic transducers; controlling; electronic system; limited diffraction beams; steering; two-dimensional array transducer; Apertures; Biomedical imaging; Biomedical transducers; Biophysics; Diffraction; Phased arrays; Physiology; Production; Ultrasonic imaging; Ultrasonic transducers;
Conference_Titel :
Ultrasonics Symposium, 1992. Proceedings., IEEE 1992
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0562-0
DOI :
10.1109/ULTSYM.1992.275929
