TY  - CONF
AU  - Ekström, H.
AU  - Kollberg, E.
AU  - Yagoubov, P.
AU  - Gol'tsman, G.
AU  - Gershenzon, E.
AU  - Yngvesson, S.
PY  - 1997
DA  - 1997//
TI  - Phonon cooled ultra thin NbN hot electron bolometer mixers at 620 GHz
T2  - Proc. 8[super:th] Int. Symp. Space Terahertz Technol.
BT  - Proc. 8[super:th] Int. Symp. Space Terahertz Technol.
SP  - 29
EP  - 35
KW  - NbN HEB mixers
AB  - We have measured the noise performance and gain bandwidth of 35 A thin NbN hot-electron mixers integrated with spiral antennas on silicon substrate lenses at 620 GHz. A double-sideband receiver noise temperature less than 1300 K has been obtained with a 3 dB bandwidth of GHz. The gain bandwidth is 3.2 GHz. A lower noise temperature of 1100 K has been achieved with an improved set-up. The mixer output noise dominated by thermal fluctuations is about 50-60 K, and the SSB receiver and intrinsic conversion gain is about -18 and -12 dB, respectively. Without mismatch losses and excluding the loss from the beamsplitter, we expect to achieve a receiver noise temperature of less than 700 K.
UR  - https://www.nrao.edu/meetings/isstt/1997.shtml
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1604), last updated on Wed, 26 May 2021 00:02:39 -0500
ID  - Ekstroem_etal1997
ER  -