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

fYear

1993

fDate

31 Oct-3 Nov 1993

Firstpage

1167

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1993. Proceedings., IEEE 1993

Conference_Location

Baltimore, MD

Print_ISBN

0-7803-2012-3

Type

conf

DOI

10.1109/ULTSYM.1993.339625

Filename

339625