A 850-GHz waveguide receiver employing a niobium SIS junction fabricated on a 1-/spl mu/m Si/sub 3/N/sub 4/ membrane

We report on a 850-GHz superconducting-insulator-superconducting (SIS) heterodyne receiver employing an RF-tuned niobium tunnel junction with a current density of 14 kA/cm/sup 2/, fabricated on a 1-/spl mu/m Si/sub 3/N/sub 4/ supporting membrane. Since the mixer is designed to be operated well above...

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Veröffentlicht in:	IEEE transactions on microwave theory and techniques 1998-02, Vol.46 (2), p.151-161
Hauptverfasser:	Kooi, J.W., Pety, J., Bumble, B., Walker, C.K., LeDuc, H.G., Schaffer, P.L., Phillips, T.G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorption Current density Josephson junctions Mixers Niobium Noise measurement Superconducting device noise Superconducting devices Temperature sensors Waveguide junctions
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