PT Unknown
AU Okunev, 0
   Dzardranov, A
   Gol'tsman, G
   Gershenzon, E
TI Performances of hot—electron superconducting mixer for frequencies less than the gap energy: NbN mixer for 100 GHz operation
SE Proc. 6[super:th] Int. Symp. Space Terahertz Technol.
PY 1995
BP 247
EP 253
DE NbN HEB mixers
AB 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.
ER