DocumentCode
926259
Title
An Active "Cold" Noise Source
Author
Frater, Robert H. ; Williams, David R.
Volume
29
Issue
4
fYear
1981
fDate
4/1/1981 12:00:00 AM
Firstpage
344
Lastpage
347
Abstract
An active circuit which behaves like a "cold" noise source is described. The circuit which uses a gallium arsenide FET is given the name COLFET. The appropriate theory is developed and practical circuits described using the circuit. Equivalent noise temperatures of less than 50 K have been measured for a 50-omega source at 1400 MHz.
Keywords
Active noise reduction; Circuit noise; Equivalent circuits; FETs; Frequency; Impedance; Inductance; Low-frequency noise; Noise generators; Temperature;
fLanguage
English
Journal_Title
Microwave Theory and Techniques, IEEE Transactions on
Publisher
ieee
ISSN
0018-9480
Type
jour
DOI
10.1109/TMTT.1981.1130355
Filename
1130355
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