PT Journal
AU Semenov, AD
   Gousev, YP
   Renk, KF
   Voronov, BM
   Gol'tsman, GN
   Gershenzon, EM
   Schwaab, GW
   Feinaugle, R
TI Noise characteristics of a NbN hot-electron mixer at 2.5 THz
SO IEEE Trans. Appl. Supercond.
JI IEEE Trans. Appl. Supercond.
PY 1997
BP 3572
EP 3575
VL 7
IS 2
DI 10.1109/77.622171
DE NbN HEB mixers
AB The noise temperature of a NbN phonon cooled hot-electron mixer has been measured at a frequency of 2.5 THz for various operating conditions. We obtained for optimal operation a double sideband mixer noise temperature of /spl ap/14000 K and a system conversion loss of /spl ap/23 dB at intermediate frequencies up to 1 GHz. The dependences of the mixer noise temperature on the bias voltage, local oscillator power, and intermediate frequency were consistent with the phenomenological description based on the effective temperature approximation.
ER