Matched array plate

Details Matched array plate Matched array plate

1994-06-21

1995-06-20

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367165, 367173, 367176, 367901, 310337, 181104, 114 213, H04R 2300

Patent

active

054266190

ABSTRACT:
An array plate for use in an underwater craft. The craft having an array of sonar elements which has a selected range of operating frequencies. The array plate having at least one layer of material in which the layer(s) of material are designed to have selected natural frequencies of vibration throughout the range of sonar operating frequencies. The natural frequencies resulting in standing waves having selected wavelengths that develop along the layer(s) of material. The sonar elements are mounted upon the layer(s) of material such that adjacent sonar elements are spaced apart a distance of one half the average wavelength of the standing waves.

REFERENCES:
patent: 3492634 (1970-01-01), Massa
patent: 4158189 (1979-06-01), Wardle
patent: 4192246 (1980-03-01), Hodges et al.
patent: 4380808 (1983-04-01), Hill et al.
patent: 4463454 (1984-07-01), Hemond et al.
patent: 4982385 (1991-01-01), Eynck
patent: 5243566 (1993-09-01), Anderson

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