Phasing circuit for use in a scanning type ultrasonic equipment

Details Phasing circuit for use in a scanning type ultrasonic equipment Phasing circuit for use in a scanning type ultrasonic equipment

1985-03-11

1987-02-17

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

310319, 367105, 73626, G01N 2900

Patent

active

046430288

ABSTRACT:
In the scanning type ultrasonic equipment provided with a probe a plurality of transducer elements and with a phasing circuit for signals which are delivered from the transducer elements on the basis of a received ultrasonic wave, the phasing circuit includes constant current circuits each for converting selected ones of the signals from the transducer elements into a constant current signal, and a delay line having taps which are connected to the constant current circuits, in order to reduce the number of parts included in the phasing circuit and the number of adjusting operations performed therein.

REFERENCES:
patent: 4257271 (1981-03-01), Glenn
patent: 4392379 (1983-07-01), Yamaguchi
patent: 4481823 (1984-11-01), Alais
patent: 4528854 (1985-07-01), Shimazaki

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