Title :
Design implications of using transducer noise figure as the basis of sensitivity
Author :
Rhyne, T.L. ; Panda, Siddhartha
Author_Institution :
GE Med. Syst. Div, Milwaukee, WI
fDate :
31 Oct-3 Nov 1993
Abstract :
The transmission-reception loop is split into separate transmission and reception parts. The transmission part is characterized by its transfer function and transmission efficiency. Transmission efficiency is found to be important only if the required acoustic energy level can not be achieved. Noise figure is identified as the basis of sensitivity. Transducer noise figure is found to be independent of preamp input impedance. Transducer and preamp noise figures are combined to produce an overall acoustic noise figure. Excellent overall noise figures are possible even for very high impedance transducers with intervening transmission lines
Keywords :
noise; ultrasonic measurement; ultrasonic transducers; ultrasonic transmission; design implications; intervening transmission lines; noise figure; overall acoustic noise figure; preamp input impedance; preamp noise figures; sensitivity; transducer noise figure; transfer function; transmission efficiency; transmission-reception loop; Acoustic noise; Acoustic transducers; Impedance; Noise figure; Noise measurement; Signal to noise ratio; Transfer functions; Transmitters; Ultrasonic transducers; Voltage;
Conference_Titel :
Ultrasonics Symposium, 1993. Proceedings., IEEE 1993
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1993.339625
