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Unsupervised Acoustic Anomaly Detection for Rotating Machinery Under Submarine-like Environments: Considering Data Scarcity and Background Noise via Proxy Data Generation. [PDF]

Sensors (Basel)
Kim KS, Lee JH.
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Impact of Noise Bandwidth on Noise Figure

IEEE Transactions on Instrumentation and Measurement, 2019
Noise figures (NFs) are defined at each frequency of interest over a 1-Hz bandwidth. Their measurements are often performed over bandwidths of a few kilohertzs to a few megahertzs to accelerate the process and to reduce measurement jitter. These wider bandwidths introduce NF errors that can be substantial [>1 dB measured for a 0.4-dB NF low-noise ...
Alexander Sheldon, Leonid Belostotski, Geoffrey G. Messier, Arjuna Madanayake   +3 more
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Noise and distortion figure - an extension of noise figure definition for nonlinear devices

IEEE MTT-S International Microwave Symposium Digest, 2003, 2003
Deals in the integration of additive and nonlinear distortion noise contributions into a single new figure of merit: Noise and Distortion Figure, NDF. In the same way as traditional noise figure, NF, was conceived to be a measure of SNR degradation, NDF is now proposed as its extension to nonlinear systems, as a measure of SINAD degradation.
Lavrador, P.M., Carvalho, N.B. de, Pedro, J.C.   +2 more
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Noise figure measurements on nonlinear devices

Proceedings of the 17th IEEE Instrumentation and Measurement Technology Conference [Cat. No. 00CH37066], 2001
A study of the effect of a cubic nonlinearity on the Y-factor method for measuring noise figure is performed. By hypothesis, the Y-factor technique does not take nonlinearities into account. It is shown that the presence of the nonlinearity largely influences the measured noise figure value. An alternative, single-tone noise figure measurement setup is
Geens, Alain, Rolain, Yves
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Noise figure of m.e.s.f.e.t.s

IEE Proceedings I Solid State and Electron Devices, 1980
The noise figure of a m.e.s.f.e.t. is calculated as a function of drain current using the gradual channel approximation and the Shockley impedance-field technique. The results are conveniently presented as a single universal family of curves with no adjustable empirical factors.
C.R. Brewitt-Taylor, P.N. Robson, J.E. Sitch   +2 more
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A technique for differential noise figure measurement with a noise figure analyzer [Technical Committee]

IEEE Microwave Magazine, 2009
This article summarizes a new approach presented in [1] to measure the noise figure of a differential low-noise amplifier (LNA) based on familiar cold-hot single-ended noise figure measurements employed by the majority of noise figure analyzers/meters.
Leonid Belostotski, James Haslett
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Optical noise figure: theory and measurements

OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171), 2001
We examine the concept of optical noise figure in to two-port devices. Definitions of noise figure are discussed along with applications of noise figure to circuits incorporating cascades of amplifiers and other optical and optoelectronic devices.
Rodney S. Tucker, Douglas M. Baney
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Impact of Amplifier Noise Figure on Network Throughput

Optical Fiber Communication Conference, 2016
The impact of the amplifier noise figure (NF) on the optical network throughput is quantified from an information viewpoint. For every dB of NF decrease, throughput gains between 4% and 7% are reported.
Alvarado, A., Ives, D.J., Savory, S.J., Bayvel, P.   +3 more
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NOISE FIGURES, NOISE TEMPERATURES, AND SYSTEM SENSITIVITY

1961
Abstract : The definitions of terms used in systems noise work are presented, as well as general techniques of describing noise power resulting from both the source and the excess noise added by the network under consideration. A unique feature presented is a unified development of 7 noise temperatures encountered in this field, with tables showing the
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