@Article{Burke_etal1998,
author="Burke, P. J.
and Schoelkopf, R. J.
and Prober, D. E.
and Skalare, A.
and Karasik, B. S.
and Gaidis, M. C.
and McGrath, W. R.
and Bumble, B.
and Leduc, H. G.",
title="Spectrum of thermal fluctuation noise in diffusion and phonon cooled hot-electron mixers",
journal="Applied Physics Letters",
year="1998",
volume="72",
number="12",
pages="1516--1518",
optkeywords="HEB mixer; thermal fluctuation noise; TFN",
abstract="A systematic study of the intermediate frequency noise bandwidth of Nb thin-film superconducting hot-electron bolometers is presented. We have measured the spectrum of the output noise as well as the conversion efficiency over a very broad intermediate frequency range (from 0.1 to 7.5 GHz) for devices varying in length from 0.08 $\mu$m to 3 $\mu$m. Local oscillator and rf signals from 8 to 40 GHz were used. For a device of a given length, the spectrum of the output noise and the conversion efficiency behave similarly for intermediate frequencies less than the gain bandwidth, in accordance with a simple thermal model for both the mixing and thermal fluctuation noise. For higher intermediate frequencies the conversion efficiency decreases; in contrast, the noise decreases but has a second contribution which dominates at higher frequency. The noise bandwidth is larger than the gain bandwidth, and the mixer noise is low, between 120 and 530 K (double side band).",
optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=760), last updated on Mon, 30 Apr 2012 20:35:46 -0500"
}