DocumentCode
914156
Title
A 230-GHz Radiometer System Employing a Second-Harmonic Mixer (Short Papers)
Author
Goldsmith, Paul F. ; Plambeck, Richard L.
Volume
24
Issue
11
fYear
1976
fDate
11/1/1976 12:00:00 AM
Firstpage
859
Lastpage
861
Abstract
A radiometer system for use in the lambda ~ 1.3 mm (v ~ 230 GHz) region has been constructed and used for radio astronomical observations. A second-harmonic mixer employing a single Schottky diode downconverts the incident power to an IF frequency of -1400 MHz. The measured double-sideband system noise temperature is 6000 K (noise figure = 13 dB) and the double-sideband mixer conversion loss is calculated to be 10 dB. The mixer is tunable over a range of at least 15 GHz.
Keywords
Cutoff frequency; Filters; Frequency measurement; Local oscillators; Microwave radiometry; Mixers; Noise figure; Power generation; Schottky diodes; Tuning;
fLanguage
English
Journal_Title
Microwave Theory and Techniques, IEEE Transactions on
Publisher
ieee
ISSN
0018-9480
Type
jour
DOI
10.1109/TMTT.1976.1128975
Filename
1128975
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