ISSTT Proceedings

ISSTT Proceedings

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A 665 GHz Waveguide Receiver Using a Tuned 0.5 µm2 Nb/AlOx/Nb SIS Tunnel Junction

Authors:
J.W. Kooi, M.S. Chan, H.G. LeDuc, T.G. Phillips
Abstract:
We report recent results on a 580-740 GHz SIS heterodyne receiver employing a tuned 0.50µm² Nb/A10x/Nb SIS tunnel junction. The receiver has been successfully installed at the Caltech Submillimeter Observatory, Hawaii. Results of an untuned device in the same waveguide block were presented at the fifth International THz Conference. Since the mixer is meant to be operated near the superconducting gap frequency of niobium (2[Delta]/h 690 GHz), special has been taken to minimize the absorption loss in the rf matching network. To this effect we propose the use of a RF matching network that constitutes a hybrid between the well know "end-loaded" stub and radial stub matching networks.
Categories:
SIS Mixers
Year:
1996
Session:
1
Full-text:
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Page Number(s):
76-85