PT Journal
AU Jiang, L
   Li, J
   Zhang, W
   Yao, QJ
   Lin, ZL
   Shi, SC
   Vachtomin, YB
   Antipov, SV
   Svechnikov, SI
   Voronov, BM
   Goltsman, GN
TI Characterization of NbN HEB mixers cooled by a close-cycled 4 Kelvin refrigerator
SO IEEE Trans. Appl. Supercond.
JI IEEE Trans. Appl. Supercond.
PY 2005
BP 511
EP 513
VL 15
IS 2
DI 10.1109/TASC.2005.849891
DE NbN HEB mixers
AB It is quite beneficial to operate superconducting hot-electron-bolometer (HEB) mixers with a close-cycled 4 Kelvin refrigerator for real applications such as astronomy and atmospheric research. In this paper, a phononcooled NbN HEB mixer (quasioptical type) is thoroughly characterized under such a cooling circumstance. The effects of mechanical vibration, electrical interference, and temperature fluctuation of a two-stage Gifford-McMahon 4 Kelvin refrigerator upon the characteristics of the phononcooled NbN HEB mixer are investigated in particular. Detailed measurement results are presented.
ER