Dependence of noise temperature on physical temperature for cryogenic low-noise amplifiers
نویسندگان
چکیده
منابع مشابه
Cryogenic MMIC Low Noise Amplifiers for W - Band and Beyond
We discuss results of low noise amplifier Monolithic Millimeter-wave Integrated Circuits (MMICs), which were designed for specific frequencies in the range of 70-200 GHz. We report on room temperature and cryogenic noise performance for a variety of circuits. The designs utilize Northrop Grumman Corporation’s (NGC) 35 nm gate length InP HEMT technology. Some of the lowest reported noise figures...
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Accurate and rapid noise-temperature measurements are critical to the modeling and development of high electron mobility transistor (HEMT) cryogenically cooled amplifiers. Four different techniques have been used in the laboratory to make noise-temperature measurements of cryogenically cooled amplifiers, and each of these is described below. Following this, the cryogenic pad method, the method ...
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Millimeter-wave integrated circuits with gate lengths as short as 35 nm are demonstrating extremely low-noise performance, especially when cooled to cryogenic temperatures. These operate at low voltages and are susceptible to damage from electrostatic discharge and improper biasing, as well as being sensitive to low-level interference. Designing a protection circuit for low voltages and tempera...
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ژورنال
عنوان ژورنال: Journal of Astronomical Telescopes, Instruments, and Systems
سال: 2017
ISSN: 2329-4124
DOI: 10.1117/1.jatis.3.1.014003