Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1985-02-19
1987-02-03
Jordan, Charles T.
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
367135, 367137, 367168, 310334, 310337, 310 26, H04B 106, H04B 102, H04R 1700, H01L 4104
Patent
active
046412913
ABSTRACT:
A plurality of piezoelectric or magnetostrictive rectangular planar staves are held in side-by-side relation in a laminate assembly including insulative spacers. The widthwise polarity of adjacent pairs of the staves are inverted relative to each other. The acoustic centers of the staves are spaced apart a distance of approximately one-half of a wavelength of the operating frequency. Electrical connections are made to the opposite side edges of each of the staves through leads and bus wires. The array of staves define an active planar acoustic face for simultaneously sending and simultaneously receiving a pair of angularly separated beams of acoustic energy without electronically phasing or time delaying the signals transmitted to and from the individual staves and without mechanically rotating the array.
REFERENCES:
patent: 3992693 (1976-11-01), Martin et al.
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patent: 4376302 (1983-03-01), Miller et al.
patent: 4437033 (1984-03-01), Diepers
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patent: 4564980 (1986-01-01), Diepers
"Doppler Sonar Theory and Practice", by P. A. Gaechter, Sep. 1970, 14 pages (Marquardt).
Atlas-Dolog 10, 6 page brochure on system by Krupp GmbH.
Lean et al., Scanned Magnetostrictive Sensors, IBM Technical Disclosure vol. 17, #12, 5/75, pp 3751-3752.
Simmons, Sr. Robert L.
Wyant Clifton M.
Ametek Inc.
Jordan Charles T.
Steinberger Brian S.
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