TY  - CONF
AU  - Jiang, Ling
AU  - Miao, Wei
AU  - Zhang, Wen
AU  - Li, Ning
AU  - Lin, Zhen Hui
AU  - Yao, Qi Jun
AU  - Shi, Sheng-Cai
AU  - Svechnikov, Sergey I.
AU  - Vakhtomin, Yury B.
AU  - Antipov, Sergey V.
AU  - Voronov, Boris M.
AU  - Kaurova, Natalia S.
AU  - Gol'tsman, Gregory N.
PY  - 2006
DA  - 2006//
TI  - Characterization of quasi-optical NbN phonon-cooled superconducting HEB mixers
T2  - Proc. 17[super:th] Int. Symp. Space Terahertz Technol.
BT  - Proc. 17[super:th] Int. Symp. Space Terahertz Technol.
SP  - 55
EP  - 58
KW  - NbN HEB mixers
AB  - In this paper, we thoroughly investigate the performance of quasi-optical NbN phonon-cooled superconducting hot-electron bolometer (HEB) mixers, cryogenically cooled by a close-cycled 4-K refrigerator at 500 GI-1z and 850 GHz. The uncorrected lowest receiver noise Abstract---In temperatures measured are 800 K at 500 CHz without anti-reflection coating, and 1000 K @ 850 GHz with a 50 11M thick Mylar anti-reflection coating. The dependence of receiver noise temperature on the critical current and bath temperature of HEB mixer is also investigated here. Lifetime of quasi-optical superconducting NbN HEB mixers of different volumes, room temperature resistances, and critical temperatures are thoroughly studied. Increased room temperature resistance with time over the initial resistance changes between 1 and 1.2, and the reduced critical current with time over the initial value fluctuates slightly around 0.7 for most HEB mixers even of different volumes, room temperature resistances, and critical temperatures. The critical current degrades sharply vvhile room temperature resistance varies over 1.25.
UR  - https://www.nrao.edu/meetings/isstt/2006.shtml
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1435), last updated on Thu, 15 Jul 2021 01:38:29 -0500
ID  - Jiang_etal2006
ER  -