Low-noise submillimeter-wave NbTiN superconducting tunnel junction mixers

Kawamura, Jonathan; Jian Chen; Miller, David; Kooi, Jacob; Zmuidzinas, Jonas; Bumble, Bruce; LeDuc, Henry G.; Stern, Jeff A.
December 1999
Applied Physics Letters;12/20/1999, Vol. 75 Issue 25, p4013
Academic Journal
Develops a low-noise superconductor-insulator-superconductor quasiparticle mixer with niobium titanium nitride (NbTiN) thin-film microstrip tuning circuits and hybrid Nb/AlN/NbTiN tunnel junctions. Use of a quasioptical configuration with a planar twin-slow antenna feeding a two-junction tuning circuit; Uncorrected double-sideband receiver noise temperature.


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