DocumentCode
1224833
Title
A Video-Frequency Noise-Spectrum Analyzer
Author
Jastram, Philip S. ; Mccouch, Gordon P.
Author_Institution
Formerly, Radio Research Laboratory, Harvard University, Cambridge, Mass.; now, Washington University, St. Louis, Mo.
Volume
37
Issue
10
fYear
1949
Firstpage
1127
Lastpage
1133
Abstract
A wave analyzer capable of measuring noise spectra in the video-frequency range is described. Part I of the paper discusses requirements in noise-analyzer design. Part II is a detailed description of a practical instrument. A frequency range of 50 kc to 10 Mc is covered, without bandswitching, at virtually constant sensitivity. The width of the analyzing pass band, 33 kc, remains constant over the measuring range. The lowest spectral level that can be measured is 7 microvolts per root kilocycle.
Keywords
Band pass filters; Bandwidth; Circuit noise; Electron tubes; Frequency measurement; Instruments; Laboratories; Noise measurement; Signal analysis; Stability;
fLanguage
English
Journal_Title
Proceedings of the IRE
Publisher
ieee
ISSN
0096-8390
Type
jour
DOI
10.1109/JRPROC.1949.233609
Filename
1697860
Link To Document