TY  - JOUR
AU  - Karasik, B. S.
AU  - Gol'tsman, G. N.
AU  - Voronov, B. M.
AU  - Svechnikov, S. I.
AU  - Gershenzon, E. M.
AU  - Ekstrom, H.
AU  - Jacobsson, S.
AU  - Kollberg, E.
AU  - Yngvesson, K. S.
PY  - 1995
DA  - 1995//
TI  - Hot electron quasioptical NbN superconducting mixer
T2  - IEEE Trans. Appl. Supercond.
JO  - IEEE Trans. Appl. Supercond.
SP  - 2232
EP  - 2235
VL  - 5
IS  - 2
KW  - NbN HEB mixers
AB  - Hot electron superconductor mixer devices made of thin NbN films on SiO/sub 2/-Si/sub 3/N/sub 4/-Si membrane have been fabricated for 300-350 GHz operation. The device consists of 5-10 parallel strips each 5 /spl mu/m long by 1 /spl mu/m wide which are coupled to a tapered slot-line antenna. The I-V characteristics and position of optimum bias point were studied in the temperature range 4.5-8 K. The performance of the mixer at higher temperatures is closer to that predicted by theory for uniform electron heating. The intermediate frequency bandwidth versus bias has also been investigated. At the operating temperature 4.2 K a bandwidth as wide as 0.8 GHz has been measured for a mixer made of 6 nm thick film. The bandwidth tends to increase with operating temperature. The performance of the NbN mixer is expected to be better for higher frequencies where the absorption of radiation should be more uniform.
SN  - 1051-8223
UR  - http://ieeexplore.ieee.org/document/403029/
UR  - https://doi.org/10.1109/77.403029
DO  - 10.1109/77.403029
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1622), last updated on Wed, 26 May 2021 14:17:03 -0500
ID  - Karasik_etal1995
ER  -