Title :
A novel ultra sensitive method for voltage noise measurements
Author :
Crupi, Felice ; Giusi, Gino ; Ciofi, Carmine ; Pace, Calogero
Author_Institution :
DEIS, Calabria Univ., Arcavacata di Rende
Abstract :
Ultra low noise measurements often require the application of signal processing and correction techniques to go beyond the noise performances of front-end amplifiers. In this paper, we propose a new method for the measurement of a voltage noise source that allows, at least in principle, the complete elimination of the noise introduced by the amplifiers used for the measurements. This is obtained by resorting to the conventional cross correlation technique for the elimination of the contribution of the EIVN of the amplifiers and by using a new three step measurement procedure that exploits different amplifier configuration measurements in order to subtract the contribution of the EICN of the amplifiers
Keywords :
amplifiers; circuit noise; correlation methods; electric noise measurement; signal processing; spectral analysis; amplifier configuration measurements; amplifier noise; cross correlation technique; front-end amplifiers; signal processing; spectral analysis; ultra low noise measurement; voltage noise measurement; voltage noise source; Background noise; Impedance; Low voltage; Low-noise amplifiers; Noise measurement; Performance evaluation; Power amplifiers; Signal processing; Spectral analysis; Voltage measurement; Amplifier noise; cross-correlation tecniques; noise measurement; spectral analysis;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2005. IMTC 2005. Proceedings of the IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-8879-8
DOI :
10.1109/IMTC.2005.1604334
