Ultrasonic imaging apparatus including impedance converter

Details Ultrasonic imaging apparatus including impedance converter Ultrasonic imaging apparatus including impedance converter

1987-09-01

1989-02-21

Tokar, Michael J.

Measuring and testing

Vibration

By mechanical waves

73620, G01N 2900

Patent

active

048054585

ABSTRACT:
An ultrasonic imaging apparatus includes a transducer probe having a plurality of transducer elements, an impedance converter provided in the transducer probe, a signal processor, and a signal cable connected between the signal processor and the transducer elements via the impedance converter. The impedance converter is a transistor emitter follower having an emitter resistor. The emitter resistor is not provided within the probe, but connected between the output terminal of the signal cable and the input terminal of the signal processor.

REFERENCES:
patent: 3960007 (1976-06-01), Swensen
patent: 4671115 (1987-07-01), Yoshie

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