TY  - CONF
AU  - Gousev, Yu P.
AU  - Olsson, H. K.
AU  - Gol'tsman, G. N.
AU  - Voronov, B. M.
AU  - Gershenzon, E. M.
PY  - 1998
DA  - 1998//
TI  - NbN hot-electron mixer at radiation frequencies between 0.9 THz and 1.2 THz
T2  - Proc. 9[super:th] Int. Symp. Space Terahertz Technol.
BT  - Proc. 9[super:th] Int. Symp. Space Terahertz Technol.
SP  - 121
EP  - 129
KW  - NbN HEB mixers
AB  - We report on noise temperature measurements for a NbN phonon-cooled hot-electron mixer at radiation frequencies between 0.9 THz and 1.2 THz. Radiation was coupled to the mixer, placed in a vacuum chamber of He cryostat, by means of a planar spiral antenna and a Si immersion lens. A backward-wave oscillator, tunable throughout the spectral range, delivered an output power of few 1.1W that was enough for optimum operation of the mixer. At 4.2 K ambient temperature and 1.025 THz radiation frequency, we obtained a receiver noise temperature of 1550 K despite of using a relatively noisy room-temperature amplifier at the intermediate frequency port. The noise temperature was fairly constant throughout the entire operation range and for intermediate frequencies from 1 GHz to 2 GHz.
UR  - https://www.nrao.edu/meetings/isstt/1998.shtml
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1588), last updated on Tue, 25 May 2021 18:47:44 -0500
ID  - Gousev_etal1998
ER  -