Accession Number:

ADA048592

Title:

Influence of Interconnection and Biasing Configurations on the Operation of Josephson Junctions as Radiation Sources.

Descriptive Note:

Final rept. 1 Mar 76-30 Jul 77,

Corporate Author:

WESTINGHOUSE RESEARCH LABS PITTSBURGH PA

Personal Author(s):

• Daniel,Michael R.
• Ashkin,Martin
• Janocko,Michael A.

Report Date:

1977-09-01

Pagination or Media Count:

56.0

Abstract:

This final report of ONR Contract No. N00014-76-C-0609 describes some initial experimental work and then calculations on an analogue computer of properties of Josephson junctions used as a frequency agile source. The results of the calculations show that a junction may be used as a nearly ideal zero impedance dc voltage source with which to bias a second junction. The junctions must be isolated rf-wise from each other and the inductance level between them must not exceed about 10 to the minus 8 power H for operation at liquid helium temperatures. The second junction will then oscillate at a frequency determined by this bias voltage. Additionally the same junction bias source was shown to be capable of biasing a series array of junctions. The series array was shown to oscillate phase coherently at a frequency determined by the divided bias voltage across each junction. Author

Descriptors:

• *JOSEPHSON JUNCTIONS
• *PHASED ARRAYS
• *MICROWAVE OSCILLATORS
• COMPUTERIZED SIMULATION
• COHERENT RADIATION
• BIAS
• CRYOGENICS
• FREQUENCY AGILITY
• MOLYBDENUM ALLOYS
• INTERMETALLIC COMPOUNDS
• ANALOG COMPUTERS
• LIQUID HELIUM
• RHENIUM ALLOYS
• GERMANIUM COMPOUNDS
• NIOBIUM COMPOUNDS

Subject Categories:

• Electrical and Electronic Equipment
• Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE