ISSTT Proceedings

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Waveguide and Quasi-optical 1 THz SIS Mixers Incorporating NbTiN/SiO2/Al Tuning Circuits

Authors:
B.D. Jackson, A.M. Baryshev, G. de Lange, J.-R. Gao, N.N. Iosad, T.M. Klapwijk, S.V. Shitov
Abstract:
The performance of 1 THz waveguide and quasi-optical mixers incorporating NbTiN/SiO2/Al tuning circuits are evaluated. Both geometries yield low mixer noise temperatures up to 1 THz, with reduced sensitivities at higher frequencies. The drop in sensitivities above 1 THz is attributed to the non-ideal structure of NbTiN films grown at room-temperature, which results in significant losses in the NbTiN ground plane above 1 THz. The design and performance of the quasi-optical lens-antenna is also discussed.
Categories:
SIS Mixers
Year:
2001
Session:
1
Full-text:
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Page Number(s):
11-20