TY  - JOUR
AU  - Ekstörm, H.
AU  - Kollberg, E.
AU  - Yagoubov, P.
AU  - Gol'tsman, G.
AU  - Gershenzon, E.
AU  - Yngvesson, S.
PY  - 1997
DA  - 1997//
TI  - Gain and noise bandwidth of NbN hot-electron bolometric mixers
T2  - Appl. Phys. Lett.
JO  - Appl. Phys. Lett.
SP  - 3296
EP  - 3298
VL  - 70
IS  - 24
KW  - NbN HEB mixers
KW  - conversion loss
KW  - conversion gain
KW  - U-factor technique
AB  - 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.
UR  - https://aip.scitation.org/doi/abs/10.1063/1.119143
UR  - https://doi.org/10.1063/1.119143
DO  - 10.1063/1.119143
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=279), last updated on Tue, 25 May 2021 19:34:01 -0500
ID  - Ekstoerm_etal1997
ER  -