Double piston acoustic transducer with selectable directivity

Details Double piston acoustic transducer with selectable directivity Double piston acoustic transducer with selectable directivity

1987-12-21

1991-02-26

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

310325, 310321, H04R 1700, H04R 1710

Patent

active

049966740

ABSTRACT:
A direction selective transducer which includes a center mass fixed between two active transducer element stacks and two head masses. The center mass couples the two stacks and allows the ratio of radiation produced by each head mass to be selected as desired by varying the amplitude and phase of drive voltages applied to the stacks. The transducer can also be used as a directional receiver.

REFERENCES:
patent: 3974474 (1976-08-01), Izzo
Ding, "Computerized Sonar Transducer Analysis and Design Based On Multiport Network Interconnection Techniques", Apr. 1973, pp. 1-32.
Camp, "Underwater Acoustics," 1970, pp. 142-150.

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