%0 Journal Article
%T Gain and noise bandwidth of NbN hot-electron bolometric mixers
%A Ekstörm, H.
%A Kollberg, E.
%A Yagoubov, P.
%A Gol'tsman, G.
%A Gershenzon, E.
%A Yngvesson, S.
%J Appl. Phys. Lett.
%D 1997
%V 70
%N 24
%F Ekstoerm_etal1997
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=279), last updated on Tue, 25 May 2021 19:34:01 -0500
%X We have measured the noise performance and gain bandwidth of 35 Å thin NbN hot-electron mixers integrated with spiral antennas on silicon substrate lenses at 620 GHz. The best double-sideband receiver noise temperature is less than 1300 K with a 3 dB bandwidth of ≈5 GHz. The gain bandwidth is 3.2 GHz. The mixer output noise dominated by thermal fluctuations is 50 K, and the intrinsic conversion gain is about −12 dB. Without mismatch losses and excluding the loss from the beamsplitter, we expect to achieve a receiver noise temperature of less than 700 K.
%K NbN HEB mixers
%K conversion loss
%K conversion gain
%K U-factor technique
%R 10.1063/1.119143
%U https://aip.scitation.org/doi/abs/10.1063/1.119143
%U https://doi.org/10.1063/1.119143
%P 3296-3298