@Article{Kawamura_etal2000, author="Kawamura, J. and Blundell, R. and Tong, C-Y E. and Papa, D. C. and Hunter, T. R. and Paine, S. N. and Patt, F. and Gol{\textquoteright}tsman, G. and Cherednichenko, S. and Voronov, B. and Gershenzon, E.", title="Superconductive hot-electron-bolometer mixer receiver for 800-GHz operation", journal="IEEE Trans. Microw. Theory Techn.", year="2000", volume="48", number="4", pages="683--689", optkeywords="NbN HEB mixers; LO power; local oscillator power; saturation; linearity; dynamic range", abstract="In this paper, we describe a superconductive hot-electron-bolometer mixer receiver designed to operate in the partially transmissive 350-$\mu$m atmospheric window. The receiver employs an NbN thin-film microbridge as the mixer element, in which the main cooling mechanism of the hot electrons is through electron-phonon interaction. At a local-oscillator frequency of 808 GHz, the measured double-sideband receiver noise temperature is TRX=970 K, across a 1-GHz intermediate-frequency bandwidth centered at 1.8 GHz. We have measured the linearity of the receiver and the amount of local-oscillator power incident on the mixer for optimal operation, which is PLO{\&}ap;1 $\mu$W. This receiver was used in making observations as a facility instrument at the Heinrich Hertz Telescope, Mt. Graham, AZ, during the 1998-1999 winter observing season.", optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=573), last updated on Mon, 24 May 2021 19:46:54 -0500", issn="0018-9480", doi="10.1109/22.841960", opturl="http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=841960", opturl="https://doi.org/10.1109/22.841960" }