Ultrasound transducer head with integrated variable-gain amplifi

Details Ultrasound transducer head with integrated variable-gain amplifi Ultrasound transducer head with integrated variable-gain amplifi

1996-04-17

1998-03-03

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Echo systems

Returned signal used for control

G01S 7526

Patent

active

057243123

ABSTRACT:
An ultrasound transducer head that contains at least one transducer element, which receives ultrasound signals and converts them into electrical receive signals, and an amplifier device, which electrically amplifies the receive signals of the transducer element. The amplifier device contains at least one capacitive component, preferably a controllable capacitive diode. The gain of the amplifier device can be varied as a function of the capacitance of the capacitive component. A virtually loss-free gain is obtained over a large dynamic response range.

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Application Note 200-1, Designer's Guide For 200 Series Op Amps, Conlinear Corp., Nov. 1984).
U. Tietze et al., "Halbleiter-Schaltungstechnik", 9th Ed. 1990, p. 350.

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