Steering of Limited diffraction beams with a two-dimensional array transducer

Jian Yu Lu; James F. Greenleaf

doi:10.1109/ULTSYM.1992.275929

Steering of Limited diffraction beams with a two-dimensional array transducer

Jian Yu Lu, James F. Greenleaf

Physiology & Biomedical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

11 Scopus citations

Abstract

Limited diffraction beams such as Bessel beams and X waves have large depth of field and could have applications in medical ultrasound and other wave related areas. However, they are usually produced by annular arrays which have to be scanned mechanically. In this paper, the production and steering of the 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.

Original language	English (US)
Title of host publication	1992 Ultrasonics Symposium Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	603-607
Number of pages	5
ISBN (Electronic)	0780305620
DOIs	https://doi.org/10.1109/ULTSYM.1992.275929
State	Published - 1992
Event	1992 Ultrasonics Symposium - Tucson, United States Duration: Oct 20 1992 → Oct 23 1992

Publication series

Name	Proceedings - IEEE Ultrasonics Symposium
Volume	1992-October
ISSN (Print)	1051-0117

Conference

Conference	1992 Ultrasonics Symposium
Country/Territory	United States
City	Tucson
Period	10/20/92 → 10/23/92

ASJC Scopus subject areas

Acoustics and Ultrasonics

Access to Document

10.1109/ULTSYM.1992.275929

Cite this

Steering of Limited diffraction beams with a two-dimensional array transducer. / Lu, Jian Yu; Greenleaf, James F.
1992 Ultrasonics Symposium Proceedings. Institute of Electrical and Electronics Engineers Inc., 1992. p. 603-607 275929 (Proceedings - IEEE Ultrasonics Symposium; Vol. 1992-October).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Lu, JY & Greenleaf, JF 1992, Steering of Limited diffraction beams with a two-dimensional array transducer. in 1992 Ultrasonics Symposium Proceedings., 275929, Proceedings - IEEE Ultrasonics Symposium, vol. 1992-October, Institute of Electrical and Electronics Engineers Inc., pp. 603-607, 1992 Ultrasonics Symposium, Tucson, United States, 10/20/92. https://doi.org/10.1109/ULTSYM.1992.275929

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AB - Limited diffraction beams such as Bessel beams and X waves have large depth of field and could have applications in medical ultrasound and other wave related areas. However, they are usually produced by annular arrays which have to be scanned mechanically. In this paper, the production and steering of the 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.

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Steering of Limited diffraction beams with a two-dimensional array transducer

Abstract

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Conference

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