TY - CONF AU - Yagoubov, P. AU - Gol'tsman, G. AU - Voronov, B. AU - Svechnikov, S. AU - Cherednichenko, S. AU - Gershenzon, E. AU - Belitsky, V. AU - Ekström, H. AU - Semenov, A. AU - Gousev, Yu AU - Renk, K. PY - 1996 DA - 1996// TI - Quasioptical phonon-cooled NbN hot-electron bolometer mixer at THz frequencies T2 - Proc. 7[super:th] Int. Symp. Space Terahertz Technol. BT - Proc. 7[super:th] Int. Symp. Space Terahertz Technol. SP - 303 EP - 317 KW - NbN HEB mixers AB - In our experiments we tested phonon-cooled hot-electron bolometer (HEB) quasioptical mixer based on spiral antenna designed for 0.5-1.2 THz frequency band and fabricated on sapphire, Si-coated sapphire and high resistivity silicon substrates. HEB devices were produced from thin superconducting NbN film 3.5-6 nm thick with the critical temperature of about 11-12 K. For these devices we achieved the receiver noise temperature T R (DSB) = 3000 K in the 500-700 GHz frequency range and an IF bandwidth of 3-4 GHz. Prelimanary measurements at frequencies 1-1.2 THz resulted the receiver noise temperature about 9000 K (DSB). UR - https://www.nrao.edu/meetings/isstt/1996.shtml N1 - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1614), last updated on Wed, 26 May 2021 12:39:05 -0500 ID - Yagoubov_etal1996 ER -