TY  - JOUR
AU  - Yagoubov, Pavel
AU  - Kroug, Matthias
AU  - Merkel, Harald
AU  - Kollberg, Erik
AU  - Schubert, Josef
AU  - Hübers, Heinz-Wilhelm
PY  - 1999
DA  - 1999//
TI  - NbN hot electron bolometric mixers at frequencies between 0.7 and 3.1 THz
T2  - Supercond. Sci. Technol.
JO  - Supercond. Sci. Technol.
SP  - 989
EP  - 991
VL  - 12
IS  - 11
KW  - NbN HEB mixers
AB  - The performance of NbN-based phonon-cooled hot electron bolometric (HEB) quasioptical mixers is investigated in the 0.7-3.1 THz frequency range. The devices are made from a 3.5-4 nm thick NbN film on high resistivity Si and integrated with a planar spiral antenna on the same substrate. The length of the bolometer microbridge is 0.1-0.2 µm; the width is 1-2 µm. The best results of the DSB receiver noise temperature measured at 1.5 GHz intermediate frequency are: 800 K at 0.7 THz, 1100 K at 1.6 THz, 2000 K at 2.5 THz and 4200 K at 3.1 THz. The measurements were performed with a far infrared laser as the local oscillator (LO) source. The estimated LO power requirement is less than 500 nW at the receiver input. First results on spiral antenna polarization measurements are reported.
SN  - 0953-2048
UR  - https://iopscience.iop.org/article/10.1088/0953-2048/12/11/387
UR  - https://doi.org/10.1088/0953-2048/12/11/387
DO  - 10.1088/0953-2048/12/11/387
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=295), last updated on Tue, 25 May 2021 14:12:04 -0500
ID  - Yagoubov_etal1999
ER  -