Prototype cooled low-noise microwave amplifiers based on high-electron-mobility transistors (HEMT's) considered as replacements for cooled ruby masers used as low-noise receiver-front-end amplifiers in communications, radio science, radar systems, radio astronomy, and telemetry. HEMT amplifier operates at 12 K, requires less cooling power and operates at lower cost with simpler, more-reliable cooling system.
Cooled Low-Noise HEMT Microwave Amplifiers
NASA Tech Briefs ; 16 , 7
1992-07-01
Miscellaneous
No indication
English
A Low-Noise Cryogenically-Cooled 8-12 GHz HEMT Amplifier for Future Space Applications
British Library Online Contents | 1997
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AIAA | 1992
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British Library Online Contents | 2010
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