TY  - CONF
AU  - Richter, H.
AU  - Semenov, A.
AU  - Hubers, H-W
AU  - Smirnov, K.
AU  - Gol’tsman, G.
AU  - Voronov, B.
PY  - 2004
DA  - 2004//
TI  - Phonon cooled hot-electron bolometric mixer for 1-5 THz
T2  - Proc. 29th IRMMW / 12th THz
BT  - Proc. 29th IRMMW / 12th THz
SP  - 241
EP  - 242
KW  - NbN HEB mixers
AB  - Heterodyne receivers for applications in astronomy and planetary research need quantum limited sensitivity. In instruments which are currently built for SOFIA and Herschel, superconducting hot electron bolometers (HEB) are used to achieve this goal at frequencies above 1.4 THz. In order to optimize the performance for this frequency of hot electron bolometer mixers with different in-plane dimensions and logarithmic-spiral feed antennas have been investigated. Their noise temperatures and beam patterns were measured. Above 3 THz the best performance was achieved with a superconducting bridge of 2.0/spl times/0.2 /spl mu/m/sup 2/ incorporated in a logarithmic spiral antenna. The DSB noise temperatures were 2700 K, 4700 and 6400 K at 3.1 THz, 4.3 THz and 5.2 THz, respectively. The results demonstrate that the NbN HEB is very well suited as a mixer for THz heterodyne receivers up to at least 5 THz.
UR  - https://doi.org/10.1109/ICIMW.2004.1422044
DO  - 10.1109/ICIMW.2004.1422044
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1506), last updated on Tue, 18 May 2021 19:57:12 -0500
ID  - Richter_etal2004
ER  -