Two-dimensional phased array of ultrasonic transducers

Details Two-dimensional phased array of ultrasonic transducers Two-dimensional phased array of ultrasonic transducers

1988-12-27

1989-12-26

Kyle, Deborah L.

Communications, electrical: acoustic wave systems and devices

Transmitter systems

With beam forming, shaping, steering, or scanning

367103, 367155, 310334, H04B 102

Patent

active

048902683

ABSTRACT:
A two-dimensional ultrasonic phase array is a rectilinear approximation to a circular aperture and is formed by a plurality of transducers, arranged substantially symmetrical about both a first (X) axis and a second (Y) axis and in a plurality of subarrays, each extended in a first direction (i.e. parallel to the scan axis X) for the length of a plurality of transducers determined for that subarray, but having a width of a single transducer extending in a second, orthogonal (the out-of-scan-plane, or Y) direction to facilitate dynamic focussing and/or dynamic apodization. Each subarray transducer is formed of a plurality of sheets (part of a 2-2 ceramic composite) all electrically connected in parallel by a transducer electrode applied to juxtaposed first ends of all the sheets in each transducer, while a common electrode connects the remaining ends of all sheets in each single X-coordinate line of the array.

REFERENCES:
patent: 2484626 (1949-10-01), Keller
patent: 2601300 (1952-06-01), Klein
patent: 4564980 (1986-01-01), Diepers

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