TY  - JOUR
AU  - Lobanov, Y. V.
AU  - Tong, C-Y E.
AU  - Hedden, A. S.
AU  - Blundell, R.
AU  - Voronov, B. M.
AU  - Gol'tsman, G. N.
PY  - 2011
DA  - 2011//
TI  - Direct measurement of the gain and noise bandwidths of HEB mixers
T2  - IEEE Trans. Appl. Supercond.
JO  - IEEE Trans. Appl. Supercond.
SP  - 645
EP  - 648
VL  - 21
IS  - 3
KW  - waveguide NbN HEB mixers
AB  - The intermediate frequency (IF) bandwidth of a hot electron bolometer (HEB) mixer is an important parameter of the mixer, in that it helps to determine its suitability for a given application. With the availability of wideband low noise amplifiers, it is simple to measure the performance of an HEB mixer over a wide range of IF at a fixed LO frequency using the standard Y-factor method. This in-situ method allows us to measure both the gain and noise bandwidths simultaneously. We have also measured mixer output impedance with a vector network analyser. Intrinsic time constant has been extracted from the impedance data and compared to the mixer's bandwidths determined from receiver Y-factor measurement.
UR  - https://doi.org/10.1109/TASC.2010.2095403
DO  - 10.1109/TASC.2010.2095403
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=720), last updated on Thu, 13 May 2021 23:46:31 -0500
ID  - Lobanov_etal2011
ER  -