Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1996-05-29
1998-03-03
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
H04R 144
Patent
active
057243158
ABSTRACT:
An omnidirectional ultrasonic microprobe hydrophone is disclosed. Applicans include underwater mine detection, explosive shock testing, high wave number measurements, medical imaging, and therapeutic systems. The apparatus includes at least two lead zirconate titanate (PZT) pressure sensing elements having a plurality of columnar voids formed therein. The pressure sensing elements are deposited on a metallic or nonmetallic substrate which provides mechanical support for the microprobe hydrophone. Electrical connection to the pressure sensing elements is made by deposition of conductors and insulators on the substrate material. Wire bonds are used to attach wire leads for connection to a supporting structure containing a preamplifier. Line arrays and planar arrays of microprobe hydrophone elements are also disclosed.
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Chizhik Dmitry
Moffett Mark B.
Powers James M.
Straw Timothy B.
Gauthier Robert W.
Lall Prithvi C.
McGowan Michael J.
Pihulic Daniel T.
The United States of America as represented by the Secretary of
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