Title :
A Directional Ratiometric Ultrasonic Blood Flowmeter
Author :
Haase, W.C. ; Foletta, W.S. ; Meindl, J.D.
Keywords :
Band pass filters; Blood; Counting circuits; Cutoff frequency; Detectors; Filtering theory; Frequency conversion; Frequency estimation; Signal generators; Voltage-controlled oscillators;
Conference_Titel :
1973 Ultrasonics Symposium
DOI :
10.1109/ULTSYM.1973.196152