Thermally saturated SUPARAMP

Journal Article · Tue Mar 01 04:00:00 EST 1977 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.323775· OSTI ID:7330430

Feldman, M J

The superconducting unbiased parametric amplifier can be saturated by low levels of broadband thermal radiation. Saturation increases the fluctuation noise temperature and complicates the determination of the operating parameters of this device. In this paper the theory of the thermally saturated SUPARAMP is presented. It is found that a particular amplifier can be described by a characteristic temperature, its maximum possible output brightness temperature. The implications of this theory for the interpretation of past experiments and for the design of future experiments are discussed.

• Research Organization: Department of Physics, University of California, Berkeley, California 94720
• OSTI ID: 7330430
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 48:3; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFIERS
DESIGN
ELECTRONIC EQUIPMENT
FLUCTUATIONS
JOSEPHSON EFFECT
JOSEPHSON JUNCTIONS
NOISE
OPERATION
PARAMETRIC AMPLIFIERS
SPECIFICATIONS
SUPERCONDUCTING JUNCTIONS
TEMPERATURE NOISE
USES
VARIATIONS