Compensating sensor device for a charge amplifier circuit used i

Details Compensating sensor device for a charge amplifier circuit used i Compensating sensor device for a charge amplifier circuit used i

1988-04-11

1989-05-30

Steinberger, Brian S.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367135, 310337, 310800, 381120, H04R 1700

Patent

active

048357472

ABSTRACT:
To compensate for the effect of external parameters on piezoelectric sensors connected to a charge amplifier, a small portion of this sensor is used to form the feedback capacitor of the amplifier. These parameters then have the same effect on the sensor and on the capacitor, thus making it possible to provide compensation to hydrophones made of piezoelectric polymer material.

REFERENCES:
patent: 3659123 (1972-04-01), Oya
patent: 4149102 (1979-04-01), Kellen
patent: 4451710 (0000-01-01), Taylor et al.
patent: 4517665 (1985-05-01), DeReggi et al.
patent: 4695988 (1987-09-01), Banno
patent: 4709360 (1987-11-01), Martin et al.
IEEE Transactions on Sonics and Ultrasonics, vol. SU-29, No. 6, Nov. 1982, pp. 370-377, New York, US; G. R. Harris: "Sensitivity considerations for PVDF hydrophones using the spot-poled membrane design" p. 372, paragraph B: Charge amplifier.

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