NASA NTRS · 19920000393
Cooled Low-Noise HEMT Microwave Amplifiers
Abstract
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.
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Bautista, J. Javier, Ortiz, Gerardo G., Duh, Kuanghann George. 1992-07-01. Cooled Low-Noise HEMT Microwave Amplifiers. https://ntrs.nasa.gov/citations/19920000393
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