ISSN:
1572-9559
Keywords:
submillimeter heterodyne systems
;
Schottky barrier mixers
;
cryogenic cooling
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We report here the first results obtained by cooling a submillimeter quasioptical mixer, utilizing a Schottky diode in a corner reflector mixer structure. Measurements have been carried out at a wavelength of 434 microns. The diode inverse slope parameter Vo at low current decreases by a factor of 3 upon cooling to 50 K while the minimum system noise temperature of 5600 K (SSB), including the IF contribution, demonstrates a reduction of approximately 40% from the ambient temperature value. We also report improved system noise temperatures at 184 μm and 119 μm wavelengths of 38000 K and 64000 K (SSB), respectively.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01006938
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