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Author
Okunev, 0.
;
Dzardranov, A.
;
Gol'tsman, G.
;
Gershenzon, E.
Title
Performances of hot—electron superconducting mixer for frequencies less than the gap energy: NbN mixer for 100 GHz operation
Type
Conference Article
Year
1995
Publication
Proc. 6
th
Int. Symp. Space Terahertz Technol.
Abbreviated Journal
Proc. 6
th
Int. Symp. Space Terahertz Technol.
Volume
Issue
Pages
247-253
Keywords
NbN HEB mixers
Abstract
The possibilities to improve the parameters of the 100 GHz NbN HEB superconducting waveguide mixers have been studied. The device consists of a signal strip 1 gm wide by 2 Am long made of 40 A thick NbN film. The best operation point was found at 5 K, where the mixer bandwidth made up 1.5-2 GHz and the total loss diminished down to 8 dB. The critical current density has been increased up to " 40 6 A/cm 2 , the noise temperature of the receiver (DSB) has reduced down to 450 K and the local oscillator power has decreased down to -.4).1 mcV.
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no
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1625
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