@InProceedings{Ryabchun_etal2007, author="Ryabchun, Sergey and Tong, Cheuk-yu Edward and Blundell, Raymond and Kimberk, Robert and Gol{\textquoteright}tsman, Gregory", title="Stabilisation of a terahertz hot-electron bolometer mixer with microwave feedback control", booktitle="Proc. 18$^{th}$ Int. Symp. Space Terahertz Technol.", year="2007", pages="193--198", optkeywords="waveguide NbN HEB mixers; Allan variance; stability", abstract="We report on implementation of microwave feedback control loop to stabilise the performance of an HEB mixer receiver. It is shown that the receiver sensitivity increases by a factor of 4 over a 16-minute scan, and the corresponding Allan time increases up to 10 seconds, as opposed to an open loop value of 1 second. Our experiments also demonstrate that the receiver sensitivity is limited by the intermediate frequency chain.", optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=1421), last updated on Sun, 16 May 2021 12:19:42 -0500", opturl="https://www.nrao.edu/meetings/isstt/2007.shtml" }