%0 Journal Article
%T Direct measurement of the gain and noise bandwidths of HEB mixers
%A Lobanov, Y. V.
%A Tong, C-Y E.
%A Hedden, A. S.
%A Blundell, R.
%A Voronov, B. M.
%A Gol'tsman, G. N.
%J IEEE Trans. Appl. Supercond.
%D 2011
%V 21
%N 3
%F Lobanov_etal2011
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=720), last updated on Thu, 13 May 2021 23:46:31 -0500
%X 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.
%K waveguide NbN HEB mixers
%R 10.1109/TASC.2010.2095403
%U https://doi.org/10.1109/TASC.2010.2095403
%P 645-648