DocumentCode
938660
Title
A Continuous Comparison at 97 GHz Radiometer
Author
Predmore, C. Read ; Erickson, Neal R. ; Huguenin, G. Richard ; Goldsmith, Paul F.
Volume
33
Issue
1
fYear
1985
fDate
1/1/1985 12:00:00 AM
Firstpage
44
Lastpage
51
Abstract
A continuous comparison radiometer has been implemented at 97 GHz using quasi-optical techniques for local oscillator (LO) injection and realization of a 90° hybrid. Cryogenically cooled Schottky-diode mixers and FET amplifiers give a double-sideband (DSB) system temperature of 250 K. The system is self-calibrating and optimized under computer control. The root-mean-square (rms) fluctuations due to the receiver are less than 0.025 K with a 1-s integration time.
Keywords
Calibration; Fluctuations; Frequency; Local oscillators; Observatories; Radio astronomy; Radiometry; Receivers; Switches; Voltage;
fLanguage
English
Journal_Title
Microwave Theory and Techniques, IEEE Transactions on
Publisher
ieee
ISSN
0018-9480
Type
jour
DOI
10.1109/TMTT.1985.1132936
Filename
1132936
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