DocumentCode
1374506
Title
High sensitivity noise measurement with a correlation spectrum analyzer
Author
Sampietro, Marco ; Accomando, Gianfranco ; Fasoli, Luca G. ; Ferrari, Giorgio ; Gatti, Emilio C.
Author_Institution
Dipt. di Elettronica e Inf., Politecnico di Milano, Italy
Volume
49
Issue
4
fYear
2000
fDate
8/1/2000 12:00:00 AM
Firstpage
820
Lastpage
822
Abstract
A spectrum analyzer with enhanced sensitivity has been built and used in noise measurements. It is based on the processing of the input signal by two independent channels in parallel and takes advantage of the incoherent property of the noise in each of the two input stages. The instrument has demonstrated an improvement in sensitivity of at least 50 dB with respect to a traditional system, and therefore can measure low input signals down to the hundred pV/√Hz range
Keywords
correlation methods; electric noise measurement; spectral analysers; 50 dB; 50 dB sensitivity improvement; coherence measurement; correlation spectrum analyzer; input signals; noise measurement; spectral analysis; Frequency; Helium; Instruments; Local oscillators; Low pass filters; Low-noise amplifiers; Noise level; Noise measurement; Signal processing; Spectral analysis;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/19.863931
Filename
863931
Link To Document