Wide band proportional transducer array

Details Wide band proportional transducer array Wide band proportional transducer array

1976-11-19

1978-10-31

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310369, H01L 4110

Patent

active

041236815

ABSTRACT:
A wide band proportional transducer array including a plurality of active oustic elements. The elements are concentrically mounted to form a conical array. A proportionality constant k is selected to be such that a nearly constant composite array impedence is achieved. The proportionality constant relates to the ratio of the resonant frequencies of adjacent elements and inversely as the ratio to their physical sizes. Another embodiment employs a pair of conical arrays which results in a toroidal beam.

REFERENCES:
patent: 3136381 (1964-06-01), Anderson
patent: 3243768 (1966-03-01), Roshon, Jr.
patent: 3277428 (1966-10-01), Samsell
patent: 3277451 (1966-10-01), Parssinen
patent: 3327286 (1967-06-01), Dorr et al.
patent: 3449712 (1969-06-01), Angeloff
patent: 3496527 (1970-02-01), Ziehm
patent: 3760345 (1973-09-01), Hughes

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