Accession Number:

ADA134762

Title:

S-I-S mm-Wave Mixers and Detectors.

Descriptive Note:

Final rept.,

Corporate Author:

SPERRY RESEARCH CENTER SUDBURY MA

Report Date:

1983-10-01

Pagination or Media Count:

38.0

Abstract:

This program is an effort to achieve the ultimate goal of fabricating refractory superconducting S-I-S mixer devices for operation in mm-wave receivers in the quantum mode and in the 8-10 K temperature range. The following progress has been made toward the above goal 1 development of in-house capability of depositing niobium carbonitride films Nb x Ny of device quality with transition temperatures to approx. 16 K 2 development of NbCxNyaSiNb and NbCxNyGeNb devices of very high quality 3 fabrication and successful operation of niobium based S-I-S mixer chips and 4 fabrication and evaluation of aSi and Ge barrier all-NbCxNy devices. NbCxNyGeNb devices have been fabricated with chemical vapor deposited CVD polycrystalline arsenic-doped germanium barriers. All-Nb-S-I-S mixer chips were fabricated and sent to Goddard Institute for Space Studies to be evaluated. The noise temperature was approx. 60 K and the conversion loss of 5 dB. These results are comparable to Pb alloy junction results. A second-generation mixer was designed by GISS.

Subject Categories:

  • Electrical and Electronic Equipment
  • Electricity and Magnetism
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE