PT Unknown
AU Shurakov, A
   Tong, E
   Blundell, R
   Gol'tsman, G
TI Microwave stabilization of HEB mixer by a microchip controller
SE IEEE MTT-S international microwave symposium digest
PY 2012
BP 1
EP 3
DE HEB mixer stability; microwave injection; Allan variance; Allan time
AB The stability of a Hot Electron Bolometer (HEB) mixer can be improved by the use of microwave injection. In this article we report a refinement of this approach. We introduce a microchip controller to facilitate the implementation of the stabilization scheme, and demonstrate that the feedback loop effectively suppresses drifts in the HEB bias current, leading to an improvement in the receiver stability. The measured Allan time of the mixer's IF output power is increased to > 10 s.
ER