A 40 MHz linear array based on a 1-3 composite with geometric elevation focussing

J. A. Brown; F. S. Foster; A. Needles; G. R. Lockwood

doi:10.1109/ULTSYM.2006.77

A 40 MHz linear array based on a 1-3 composite with geometric elevation focussing

J. A. Brown, F. S. Foster, A. Needles, G. R. Lockwood

Medicine

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

9 Citations (Scopus)

Abstract

The fabrication and performance of a high-frequency (40 MHz) linear array is described. A PZTpolymer composite material was fabricated in order to serve as a flexible piezoelectric substrate. The array pattern was created using photolithography to define the electrodes, and ultrasonic wire bonding to make electrical contacts. 256 linear elements were defined with 40-micron pitch. A geometric elevation focus was formed with a 6 mm radius of curvature. The two-way -6 dB bandwidth of the resulting transducer was 50%. The one-way directivity for a single array element was found to be 24 degrees and the -3dB oneway elevation beamwidth was measured as 112 μm.

Original language	English
Title of host publication	2006 IEEE International Ultrasonics Symposium, IUS
Pages	256-259
Number of pages	4
DOIs	https://doi.org/10.1109/ULTSYM.2006.77
Publication status	Published - 2006
Event	2006 IEEE International Ultrasonics Symposium, IUS - Vancouver, BC, Canada Duration: Oct 3 2006 → Oct 6 2006

Publication series

Name	Proceedings - IEEE Ultrasonics Symposium
Volume	1
ISSN (Print)	1051-0117

Conference

Conference	2006 IEEE International Ultrasonics Symposium, IUS
Country/Territory	Canada
City	Vancouver, BC
Period	10/3/06 → 10/6/06

ASJC Scopus Subject Areas

Acoustics and Ultrasonics

Access to Document

10.1109/ULTSYM.2006.77

Cite this

Brown, JA, Foster, FS, Needles, A & Lockwood, GR 2006, A 40 MHz linear array based on a 1-3 composite with geometric elevation focussing. in 2006 IEEE International Ultrasonics Symposium, IUS., 4151933, Proceedings - IEEE Ultrasonics Symposium, vol. 1, pp. 256-259, 2006 IEEE International Ultrasonics Symposium, IUS, Vancouver, BC, Canada, 10/3/06. https://doi.org/10.1109/ULTSYM.2006.77

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AB - The fabrication and performance of a high-frequency (40 MHz) linear array is described. A PZTpolymer composite material was fabricated in order to serve as a flexible piezoelectric substrate. The array pattern was created using photolithography to define the electrodes, and ultrasonic wire bonding to make electrical contacts. 256 linear elements were defined with 40-micron pitch. A geometric elevation focus was formed with a 6 mm radius of curvature. The two-way -6 dB bandwidth of the resulting transducer was 50%. The one-way directivity for a single array element was found to be 24 degrees and the -3dB oneway elevation beamwidth was measured as 112 μm.

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A 40 MHz linear array based on a 1-3 composite with geometric elevation focussing

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