Line compensated seismic amplifier

Details Line compensated seismic amplifier Line compensated seismic amplifier

1979-01-19

1980-12-23

Birmiel, Howard A.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Offshore prospecting

330 84, 330258, 333 12, 367 65, 367135, 367152, G01V 128, H04B 328, G01V 138

Patent

active

042414288

ABSTRACT:
A seismic amplifier for use in marine seismic survey work involving the transmission of signals from remote signalling stations over cable pairs to signal processing equipment. These signalling stations are comprised of capacitive transducers. The seismic amplifier of the surveying system includes operational amplifiers electrically interconnected with a feedback circuit comprised of a balanced resistive-reactive network which is a lumped parameter equivalent circuit of the transmission line and capacitive transducer. The lumped parameter equivalent circuit used for feedback provides a flat, zero-phase shift overall response over the cable pair from the transducer to the output of a differential amplifier stage which is connected to the operational amplifier outputs to improve common mode rejection.

REFERENCES:
patent: 3118126 (1964-01-01), Brock et al.
patent: 3351898 (1967-11-01), Romberg
patent: 3469255 (1969-09-01), Hoffman et al.
patent: 3863200 (1975-01-01), Miller
patent: 3863201 (1975-01-01), Briggs et al.
patent: 3939468 (1976-02-01), Mastin
patent: 3972020 (1976-07-01), Carroll et al.

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