Biplane phased array for ultrasonic medical imaging

A. Shaulov, B. M. Singer, W. A. Smith, D. Dorman

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

The authors report a transducer structure that combines two orthogonal phase arrays that enable the real-time scanning of two orthogonal sectors. This biplane phased array is formed by partially dicing the opposite faces of a composite piezoelectric plate in orthogonal directions. Individual elements of the orthogonal arrays show broad radiation patterns close to the theoretical expectations for isolated elements. Arrays formed by patterning the electrode alone, without cross dicing, show a narrower directivity pattern for a single element. This narrowing is a refractive effect due to the relatively high acoustic velocities in the composite material as compared with the sound velocity in the propagation medium. It is noted that the concept of the biplane phased array forms the basis for a new class of transducer systems that combine two transducer arrays in a single piezocomposite plate.

Original languageEnglish
Pages (from-to)635-638
Number of pages4
JournalUltrasonics Symposium Proceedings
Volume2
StatePublished - 1988
Externally publishedYes
EventIEEE 1988 Ultrasonics Symposium - Proceedings - Chicago, IL, USA
Duration: 2 Oct 19885 Oct 1988

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