Characterization of submillimetre quasi-optical twin-slot double-junction SIS mixers

Creators: Gaidis, M. C.; Bin, M.; Miller, D.; Zmuidzinas, J.; LeDuc, H. G.; Stern, J. A.

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Abstract

We report on the continuing development of submillimetre quasi-optical slot antenna SIS mixers, which use two-junction tuning circuits. Direct and heterodyne Fourier transform spectrometer measurements have been performed to compare device performance with predictions. Demonstrated double-sideband receiver noise temperatures of better than 540 K at 808 GHz make these SIS mixers substantially better than GaAs Schottky receivers for the astronomically important CI and CO transitions near 810 GHz.

Additional Information

© 1996 IOP Publishing Limited Received 18 October 1995 We thank N Erickson for the use of his Gunn/multiplier chain, and G Blake and P Stockman for help with the FIR laser. This work was supported in parts by grants from NASA (NAGW-107 and NAG2-744), NASA/JPL and a NSF PYI grant to JZ. The junction fabrication was performed at the Center for Space Microelectronics Technology, Jet Propulsion Laboratory, California Institute of Technology, and was sponsored by NASA, Office of Space Access Technology. SPECIAL ISSUE: INTERNATIONAL SUPERCONDUCTIVE ELECTRONICS CONFERENCE 1995

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