Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1980-04-07
1984-11-20
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
367905, H04B 1300
Patent
active
044843178
ABSTRACT:
A frequency independent acoustic antenna has an acoustic filter plate located between a lens and sensor/transmitter. When used as a receiver this arrangement of components enables the lens to receive plane waves emanating from a source. This results in materially enhanced beam forming characteristics and performance. The arrangement is also suitable for use in the transmitting mode.
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Beers Robert F.
Lall Prithvi C.
McGill Arthur A.
Moskowitz Nelson
The United States of America as represented by the Secretary of
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