Results 21 to 30 of about 8,936,159 (237)

Low Frequency Noise of Tantalum Capacitors

Active and Passive Electronic Components, 2002
A low frequency noise and charge carriers transport mechanism analysis was performed on tantalum capacitors in order to characterise their quality and reliability.
J. Sikula, J. Hlavka, J. Pavelka, V. Sedlakova, L. Grmela, M. Tacano, S. Hashiguchi   +6 more
doaj   +1 more source

Noise suppression of incoherent light using a gain-saturated SOA: implications for spectrum-sliced WDM systems [PDF]

, 2005
In this paper, we present an experimental and numerical study of semiconductor optical amplifier (SOA)-based noise suppression and its relevance to high-channel-density spectrum sliced wavelength-division-multiplexed systems. We show that the improvement
Ibsen, M, Thomsen, Benn C., David J. Richardson, Horak, Peter, Ibsen, Morten, Richardson, David J., Thomsen, BC, Richardson, DJ, Anoma D. Mccoy, Morten Ibsen, McCoy, Anoma D., Benn C. Thomsen, Peter Horak, McCoy, AD, Horak, P   +14 more
core   +1 more source

Theoretical Analysis of the Noise Power Ratio of Nonlinear Power Amplifiers

Journal of Applied Mathematics, 2016
This paper presents a theoretical analysis and derives the amplifier output noise power spectral density result in a closed form when the input to the amplifier is a band limited Gaussian noise.
Rajendra Kumar
doaj   +1 more source

The Evaluation of Noise Spectroscopy Tests

Entropy, 2016
The paper discusses mathematical tools to evaluate novel noise spectroscopy based analysis and describes, via physical similarity, the mathematical models expressing the quantitative character of the modeled task.
Pavel Fiala, Petr Drexler, Dusan Nespor, Zoltan Szabo, Jan Mikulka, Jiri Polivka   +5 more
doaj   +1 more source

Spectral Characterization and Spatiotemporal Variability of the Background Seismic Noise in Italy

Earth and Space Science, 2021
In this study, we assess the spectral characteristics of seismic noise at the sites of the Italian Seismic Network and its spatio‐temporal variability. The evaluation of noise is crucial for the assessment of the detection capability of a seismic network.
Antonino D’ Alessandro, Luca Greco, Salvatore Scudero, Valentino Lauciani   +3 more
doaj   +1 more source

Assessment of Fuel Cells’ State of Health by Low-Frequency Noise Measurements

Energies, 2021
We proposed applying low-frequency (flicker) noise in proton-exchange membrane fuel cells under selected loads to assess their state of health. The measurement set-up comprised a precise data acquisition board and was able to record the DC voltage and ...
Arkadiusz Szewczyk, Łukasz Gaweł, Kazimierz Darowicki, Janusz Smulko   +3 more
doaj   +1 more source

Robust noise power spectral density estimation for binaural speech enhancement in time-varying diffuse noise field

EURASIP Journal on Audio, Speech, and Music Processing, 2017
In speech enhancement, noise power spectral density (PSD) estimation plays a key role in determining appropriate de-nosing gains. In this paper, we propose a robust noise PSD estimator for binaural speech enhancement in time-varying noise environments ...
Youna Ji, Yonghyun Baek, Young-cheol Park   +2 more
doaj   +1 more source

Suppression of laser beam’s polarization and intensity fluctuation via a Mach–Zehnder interferometer with proper feedback

AIP Advances, 2023
Long ground-Rydberg coherence lifetime is interesting for implementing high-fidelity quantum logic gates, many-body physics, and other quantum information protocols.
Xiaokai Hou, Shuo Liu, Xin Wang, Feifei Lu, Jun He, Junmin Wang   +5 more
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Implications of Noise on Neural Correlates of Consciousness: A Computational Analysis of Stochastic Systems of Mutually Connected Processes

Entropy, 2021
Random fluctuations in neuronal processes may contribute to variability in perception and increase the information capacity of neuronal networks. Various sources of random processes have been characterized in the nervous system on different levels ...
Pavel Kraikivski
doaj   +1 more source

Enhanced weak force sensing based on atom-based coherent quantum noise cancellation in a hybrid cavity optomechanical system

Frontiers in Physics, 2023
The weak force sensing based on a coherent quantum noise cancellation (CQNC) scheme is presented in a hybrid cavity optomechanical system containing a trapped ensemble of ultracold atoms and an optical parametric amplifier (OPA).
S. K. Singh, M. Mazaheri, Jia-Xin Peng, A. Sohail, Mohammad Khalid, M. Asjad   +5 more
doaj   +1 more source