ISSTT Proceedings

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A Submillimeter Wave SIS Receiver for 547 GHz

Authors:
W.R. McGrath, P. Febvre, P. Batelaan, H.G. LeDuc, B. Bumble, M.A. Frerking, J. Hernichel
Abstract:
A heterodyne receiver using an SIS waveguide mixer with two mechanical tuners has been built and characterized over a frequency range of 460 GHz to 630 GHz. The mixer uses high current density, 0.25 µm², Nb/A10x/Nb SIS tunnel junctions with integrated superconductive RF circuits to tune the junction capacitance. A DSB receiver noise temperature as low as 200 ± 17 K has been obtained at 540 GHz. In addition, negative differential resistance has been observed in the DC 1-V curve at 487-491 GHz.
Categories:
SIS Receivers
Year:
1993
Session:
2
Full-text:
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Page Number(s):
50-58