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Proceedings Paper

Enhanced bandwidth ultrasound transducers with multiple piezoelectric polymer layers
Author(s): Peter A. Lewin; Qian Zhang; Philip E. Bloomfield
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Paper Abstract

A Barker-coded multiple layer piezopolymer transducer design is described. The design is intended to improve the transmitting sensitivity of a PVDF transducer while retaining PVDF material's wide bandwidth properties. Computer simulations of the coded multilayered PVDF transducer were carried out and several prototypes of the transducers were built and tested. The results of comparisons between the measurements and theoretical predictions are presented. Advantages and disadvantages of the coded multilayer approach to bandwidth enhancement of ultrasound transducer are also discussed. Barker-coded transducers hold promise to emerge as a new class of ultrasound imaging transducers having a sensitivity on par with that offered by presently used PZT or composite transducers but with significantly wider bandwidth.

Paper Details

Date Published: 5 November 1992
PDF: 10 pages
Proc. SPIE 1733, New Developments in Ultrasonic Transducers and Transducer Systems, (5 November 1992); doi: 10.1117/12.130607
Show Author Affiliations
Peter A. Lewin, Drexel Univ. (United States)
Qian Zhang, Drexel Univ. (United States)
Philip E. Bloomfield, Drexel Univ. (United States)

Published in SPIE Proceedings Vol. 1733:
New Developments in Ultrasonic Transducers and Transducer Systems
Frederick L. Lizzi, Editor(s)

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