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Gallium arsenide HEMTs for low-noise GHz communications engineering

✍ Scribed by Heinrich Dämbkes

Book ID
107829231
Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
407 KB
Volume
20
Category
Article
ISSN
0026-2692

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They operate at 4 K and output characteristics taken at this temperature show high dynamic output impedance and transconductance. Using these devices it was possible to develop voltagesensitive preamplifiers for operation inside a dilution refrigerator at 1 K to amplify the signals from cryogenic pa