DocumentCode
1017548
Title
Parametric amplifier with thermoelectric refrigeration
Author
Uenohara, M. ; Wolfe, R.
Author_Institution
Bell Telephone Labs., Inc., Murray Hill, N. J.
Volume
8
Issue
6
fYear
1961
Firstpage
521
Lastpage
524
Abstract
The noise figure of a variable-capacitance parametric amplifier can be greatly improved by refrigerating the diode. A thermoelectric refrigerator can be used for this purpose without losing the advantage of system simplicity. A two-stage thermoelectric refrigerator has been built into a 6-Gc parametric amplifier. With no load this refrigerator has produced a temperature difference of 101°C below room temperature. In the amplifier it cooled the diode to 213°K. The effective noise temperature of the amplifier was reduced from 170°K when the GaAs diode was at room temperature to 108°K when the diode was cooled to 213°K. The design, construction and characteristics of the amplifier and the thermoelectric refrigerator are described.
Keywords
Cooling; Cryogenics; Gallium arsenide; Nitrogen; Noise figure; Refrigeration; Semiconductor device noise; Semiconductor diodes; Temperature; Thermoelectric devices; Thermoelectricity;
fLanguage
English
Journal_Title
Electron Devices, IRE Transactions on
Publisher
ieee
ISSN
0096-2430
Type
jour
DOI
10.1109/T-ED.1961.14871
Filename
1473034
Link To Document