TY  - JOUR
AU  - Zhang, W.
AU  - Miao, W.
AU  - Zhong, J. Q.
AU  - Shi, S. C.
AU  - Hayton, D. J.
AU  - Vercruyssen, N.
AU  - Gao, J. R.
AU  - Goltsman, G. N.
PY  - 2014
DA  - 2014//
TI  - Temperature dependence of the receiver noise temperature and IF bandwidth of superconducting hot electron bolometer mixers
T2  - Supercond. Sci. Technol.
JO  - Supercond. Sci. Technol.
SP  - 085013 (1 to 5)
VL  - 27
IS  - 8
KW  - NbN HEB mixers
AB  - In this paper we study the temperature dependence of the receiver noise temperature and IF noise bandwidth of superconducting hot electron bolometer (HEB) mixers. Three superconducting NbN HEB devices of different transition temperatures (Tc) are measured at 0.85 THz and 1.4 THz at different bath temperatures (Tbath) between 4 K and 9 K. Measurement results demonstrate that the receiver noise temperature of superconducting NbN HEB devices is nearly constant for Tbath/Tc, less than 0.8, which is consistent with the simulation based on a distributed hot-spot model. In addition, the IF noise bandwidth appears independent of Tbath/Tc, indicating the dominance of phonon cooling in the investigated HEB devices.
SN  - 0953-2048
UR  - https://iopscience.iop.org/article/10.1088/0953-2048/27/8/085013
UR  - https://doi.org/10.1088/0953-2048/27/8/085013
DO  - 10.1088/0953-2048/27/8/085013
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1358), last updated on Thu, 13 May 2021 11:51:38 -0500
ID  - Zhang_etal2014
ER  -