Theoretical SIS mixer research. Final technical report, 1 June 1990-30 November 1992. [SIS (superconductor-insulator-superconductor)]

Technical Report · Tue Jun 01 04:00:00 EDT 1993

OSTI ID:6108348

Feldman, M J

Theoretical research has been conducted to elucidate the basic physics behind the properties of superconductor-insulator-superconductor (SIS) tunnel junction receiving devices. The properties of SIS mixers using nonideal junctions and finite LO power, were determined by analytic expansion of the equations of the quantum theory of mixing, and also by computer simulations of SIS receivers over the entire range of experimental parameters. The result is a new coherent and intuitive picture of SIS mixer behavior. Many of the outstanding mysteries and questions about SIS receivers are resolved, and this contributes greatly to the design and interpretation of SIS mixer experiments. Other calculations show how to achieve sub-quantum noise temperatures in the phase sensitive SIS mixer, an important step towards realization of ultra-low-noise detectors. A simplified model casts doubt on the superlative experimental results reported for the rf-series dc-parallel biased array SIS mixer. Superconductivity; SIS mixer; Submillimeter-wave detection.

• Research Organization: Rochester Univ., NY (United States). Dept. of Electrical Engineering
• OSTI ID: 6108348
• Report Number(s): AD-A-266323/5/XAB; CNN: AFOSR-90-0316
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426000 -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPUTERIZED SIMULATION
DATA
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELECTRONIC EQUIPMENT
EQUIPMENT
INFORMATION
JUNCTIONS
MECHANICS
NUMERICAL DATA
PARAMETRIC ANALYSIS
QUANTUM MECHANICS
RADIO EQUIPMENT
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SIMULATION
SUPERCONDUCTING JUNCTIONS
TEMPERATURE DEPENDENCE
THEORETICAL DATA
TUNNEL DIODES