TY  - CONF
AU  - Ryabchun, S.
AU  - Tong, C. -yu E.
AU  - Blundell, R.
AU  - Kimberk, R.
AU  - Gol’tsman, G.
A2  - Terahertz Physics, Devices, and Systems
ED  - Anwar, M.
ED  - DeMaria, A. J.
ED  - Shur, M. S.
PY  - 2006
DA  - 2006//
TI  - Effect of microwave radiation on the stability of terahertz hot-electron bolometer mixers
T2  - Proc. SPIE
BT  - Proc. SPIE
SP  - 63730J (1 to 5)
VL  - 6373
PB  - SPIE
KW  - NbN HEB mixers
KW  - hot-electron bolometer mixers
KW  - stability
KW  - Allan variance
KW  - LO power fluctuations
AB  - We report our studies of the effect of microwave radiation, with a frequency much lower than that corresponding to the energy gap of the superconductor, on the performance of the NbN hot-electron bolometer (HEB) mixer incorporated into a THz heterodyne receiver. It is shown that exposing the HEB mixer to microwave radiation does not result in a significant rise of the receiver noise temperature and degradation of the mixer conversion gain so long as the level of microwave power is small compared to the local oscillator drive. Hence the injection of a small, but controlled amount of microwave radiation enables active compensation of local oscillator power and coupling fluctuations which can significantly degrade the stability of HEB mixer receivers.
UR  - https://doi.org/10.1117/12.686291
DO  - 10.1117/12.686291
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1441), last updated on Sun, 16 May 2021 18:23:57 -0500
ID  - Ryabchun_etal2006
ER  -