4 January 1994 Low-noise hybrid superconductor/semiconductor 7.4-GHz receiver downconverter for NASA space applications
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A low-noise microwave receiver downconverter utilizing thin-film high-critical-temperature superconducting (HTS) passive circuitry and semiconductor active devices has been developed for use in space. It consists of an HTS pre-select filter, a cryogenic low-noise amplifier, a cryogenic mixer, and a cryogenic oscillator with an HTS resonator. The downconverter converts a 200 MHz wide band centered around 7.35 GHz to a band centered around 1.0 GHz. When cooled to 77 K, the downconverter plus cables inside a cryogenic refrigerator produced a noise temperature measured at the refrigerator port of approximately 50 K with conversion gain of 18 dB.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hamid H. S. Javadi, Hamid H. S. Javadi, Jeff B. Barner, Jeff B. Barner, Javier J. Bautista, Javier J. Bautista, Kul B. Bhasin, Kul B. Bhasin, J. G. Bowen, J. G. Bowen, Wilbert Chew, Wilbert Chew, Chris M. Chorey, Chris M. Chorey, Marc C. Foote, Marc C. Foote, B. H. Fujiwara, B. H. Fujiwara, A. J. Guern, A. J. Guern, Brian D. Hunt, Brian D. Hunt, Regis F. Leonard, Regis F. Leonard, Gerry G. Ortiz, Gerry G. Ortiz, Daniel L. Rascoe, Daniel L. Rascoe, Robert R. Romanofsky, Robert R. Romanofsky, Richard P. Vasquez, Richard P. Vasquez, Paul D. Wamhof, Paul D. Wamhof, } "Low-noise hybrid superconductor/semiconductor 7.4-GHz receiver downconverter for NASA space applications", Proc. SPIE 2156, High Tc Microwave Superconductors and Applications, (4 January 1994); doi: 10.1117/12.166145; https://doi.org/10.1117/12.166145

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