Electroacoustic transducer of the piezoelectric polymer type

Details Electroacoustic transducer of the piezoelectric polymer type Electroacoustic transducer of the piezoelectric polymer type

1982-08-09

1985-08-13

Rubinson, Gene Z.

179121R, H04R 1700

Patent

active

045352054

ABSTRACT:
In a piezoelectric microphone or hydrophone, the elastic structure which reacts directly to the acoustic pressure is formed of piezoelectric polymer. The electroacoustic transducer according to the invention makes use of an elastic structure in the form of a rim clamped plate having at least one incurvation and covered on at least one of its two faces with electrodes connected to an impedance-matching circuit.

REFERENCES:
patent: 3903733 (1975-09-01), Murayama et al.
patent: 4045695 (1977-08-01), Itagaki et al.
patent: 4056742 (1977-11-01), Tibbetts
patent: 4064375 (1977-12-01), Russell et al.
patent: 4088915 (1978-05-01), Kodama
patent: 4354134 (1982-10-01), Micheron
patent: 4401911 (1983-08-01), Ravinet et al.
Japanese Journal of Applied Physics, "Bending Piezoelectricity in Polyvinilidene Flouride", L. Breger, vol. 15, No. 11, 1976, pp. 2239-2240.
Electronics Letters, "Noise-Cancelling Microphone Using a Piezoelectric Plastics Transducing Element", J. F. Sear Oct. 30, 1975 pp. 532-533.

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