DocumentCode
1125472
Title
Radiometric-Waveguide Calibrators
Author
Wollack, E.J. ; Fixsen, D.J. ; Kogut, A. ; Limon, M. ; Mirel, P. ; Singal, J.
Author_Institution
NASA Goddard Space Flight Center, Greenbelt
Volume
56
Issue
5
fYear
2007
Firstpage
2073
Lastpage
2078
Abstract
We describe the electromagnetic and thermal design, performance, and fabrication for two types of radiometric- waveguide load calibrators. A simple theory is presented and used to minimize the total volume of the absorber structure. These devices have been used from room temperature to below 4 K in microwave to millimeter wavebands. The estimated precision of the calibrator is better than 1 mK absolute at temperatures near 2.7 K.
Keywords
calibration; radiometry; waveguide components; absorber structure; loaded waveguides; millimeter wavebands; radiometric-waveguide calibrators; waveguide components; Dielectric losses; Electromagnetic waveguides; Loaded waveguides; Microwave devices; Microwave radiometry; NASA; Power measurement; Temperature; Thermal conductivity; Thermal loading; Calorimeters and power measurement standards; cryogenic instrumentation; loaded waveguides, microwave absorbers, terminations, and reference loads; waveguide components;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/TIM.2007.903646
Filename
4303452
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