DocumentCode
766946
Title
Radiometer equation for noise comparison radiometers
Author
Wait, D.F.
Author_Institution
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Volume
44
Issue
2
fYear
1995
fDate
4/1/1995 12:00:00 AM
Firstpage
336
Lastpage
339
Abstract
A complete radiometer equation is derived and used to develop better corrections and uncertainty estimates. I believe it to be the first thorough analysis of radiometers with unisolated front ends. We show that a corrected unisolated radiometer can have an accuracy similar to that of a well-isolated radiometer. The radiometer error is insignificant for radiometers with 40-dB isolation. However, for high-temperature applications (such as sources and standards above 3000 K), isolation is usually unnecessary
Keywords
calibration; electric noise measurement; microwave measurement; radiometers; radiometry; 3000 K; 40 dB; corrections; cryogenic source; isolated radiometer; noise comparison radiometers; radiometer equation; uncertainty estimates.; Equations; Impedance; NIST; Noise measurement; Radiometry; Switches; Temperature; Testing; Uncertainty; Working environment noise;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/19.377846
Filename
377846
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