TY  - JOUR
AU  - Ryabchun, Sergey
AU  - Tong, Cheuk-Yu Edward
AU  - Blundell, Raymond
AU  - Gol'tsman, Gregory
PY  - 2009
DA  - 2009//
TI  - Stabilization scheme for hot-electron bolometer receivers using microwave radiation
T2  - IEEE Trans. Appl. Supercond.
JO  - IEEE Trans. Appl. Supercond.
SP  - 14
EP  - 19
VL  - 19
IS  - 1
KW  - HEB
KW  - mixer
KW  - Allan variance
KW  - stabilization
KW  - radiometer equation
AB  - We present the results of a stabilization scheme for terahertz receivers based on NbN hot-electron bolometer (HEB) mixers that uses microwave radiation with a frequency much lower than the gap frequency of NbN to compensate for mixer current fluctuations. A feedback control loop, which actively controls the power level of the injected microwave radiation, has successfully been implemented to stabilize the operating point of the HEB mixer. This allows us to increase the receiver Allan time to 10 s and also improve the temperature resolution of the receiver by about 30% in the total power mode of operation.
SN  - 1051-8223
UR  - http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=4711088
UR  - https://doi.org/10.1109/TASC.2008.2008398
DO  - 10.1109/TASC.2008.2008398
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=559), last updated on Fri, 14 May 2021 22:20:23 -0500
ID  - Ryabchun_etal2009
ER  -