Sheldon, AlexanderBelostotski, LeonidMani, HamdiGroppi, Christopher E.Warnick, Karl F.2022-02-032022-02-032021-06-25Sheldon, A., Belostotski, L., Mani, H., Groppi, C. E., and Warnick, K. F. (2021). Automated Noise-Parameter Measurements of Cryogenic LNAs. 2021 97th ARFTG Microwave Measurement Conference (ARFTG). http://dx.doi.org/10.1109/ARFTG52261.2021.96399930018-92191558-2256http://hdl.handle.net/1880/114393https://doi.org/10.11575/PRISM/46030This paper addresses the need for measured cryogenic noise parameters. The measurement process is discussed and an analysis of the measurement uncertainty is performed. To verify proper operation of the measurement system, measurements of a 1-to-2-GHz radio-astronomy low-noise amplifier (LNA) at 20, 75, and 296 K are presented. In these measurements, the typical 1$\sigma$ measurement uncertainty in noise temperatures and minimum noise temperatures is < 10%.engUnless otherwise indicated, this material is protected by copyright and has been made available with authorization from the copyright owner. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.Cryogenic electronicsLow-noise amplifiersNoise parametersRadio astronomyQuantum computingconference paperRGPIN/03855-2018, RGPAS/522621-2018http://dx.doi.org/10.1109/ARFTG52261.2021.9639993