Cryogenic performance of a GaAs MMIC distributed amplifier

Cryogenic performance of a GaAs MMIC distributed amplifier

A three-stage GaAs MMIC distributed amplifier chip which was specially packaged in a two-chip, six-stage amplifier for cryogenic operation from 1 to 10 GHz is discussed. When immersed in liquid nitrogen, a fourfold reduction in amplifier noise is observed over the 4-GHz to 8-GHz frequency range. The...

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Veröffentlicht in:IEEE transactions on microwave theory and techniques 1991-03, Vol.39 (3), p.567-571
Hauptverfasser: Moore, C.R., Trimble, W.C., Edwards, M.L., Sanderson, T.R.
Format: Artikel
Sprache:eng
Schlagworte:
Cryogenics
Distributed amplifiers
Frequency
Gallium arsenide
MMICs
Nitrogen
Noise reduction
Operational amplifiers
Packaging
Testing
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Zusammenfassung:A three-stage GaAs MMIC distributed amplifier chip which was specially packaged in a two-chip, six-stage amplifier for cryogenic operation from 1 to 10 GHz is discussed. When immersed in liquid nitrogen, a fourfold reduction in amplifier noise is observed over the 4-GHz to 8-GHz frequency range. The cryogenic amplifier package is described, and the test configuration is explained. The reduction in amplifier noise is in agreement with the generally observed scaling with ambient temperature (in Kelvin) for discrete GaAs FET amplifiers.< >
ISSN:0018-9480
1557-9670
DOI:10.1109/22.75303