TY - CONF AU - Ryabchun, Sergey AU - Tong, Cheuk-yu Edward AU - Blundell, Raymond AU - Kimberk, Robert AU - Gol’tsman, Gregory PY - 2007 DA - 2007// TI - Stabilisation of a terahertz hot-electron bolometer mixer with microwave feedback control T2 - Proc. 18[super:th] Int. Symp. Space Terahertz Technol. BT - Proc. 18[super:th] Int. Symp. Space Terahertz Technol. SP - 193 EP - 198 KW - waveguide NbN HEB mixers KW - Allan variance KW - stability AB - 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. UR - https://www.nrao.edu/meetings/isstt/2007.shtml N1 - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1421), last updated on Sun, 16 May 2021 12:19:42 -0500 ID - Ryabchun_etal2007 ER -