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Journal of Applied Physics, 1970
Variance fluctuations in 1/f noise examined with apparatus capable of responding to zero frequency signals are found to have the same magnitude as those in band-limited 1/f noise signals. The distribution of variances in identical sample lengths is skewed to small values in the case of current noise in a carbon resistor and is symmetrical in the case ...
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Variance fluctuations in 1/f noise examined with apparatus capable of responding to zero frequency signals are found to have the same magnitude as those in band-limited 1/f noise signals. The distribution of variances in identical sample lengths is skewed to small values in the case of current noise in a carbon resistor and is symmetrical in the case ...
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Low noise frequency comb generator
2016 Photonics North (PN), 2016We demonstrate an optical comb source made out of 500 in-phase and ultra-narrow spectral lines spanning over 32 nm. The source results from a single mode Brillouin laser processed with phase modulation, pulse compression, four wave mixing and regeneration. The narrow linewidth of the Brillouin laser was replicated throughout the frequency comb spectral
Md Imrul Kayes, Martin Rochette
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Japanese Journal of Applied Physics, 1990
Low-frequency noise measurements were carried out on GaAs devices in the frequency and temperature ranges from 10 Hz to 100 kHz, and from 77 K to 300 K, respectively. The noise spectra are considered to be superpositions of generation-recombination noise components caused by traps.
Shiyuan Yang +2 more
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Low-frequency noise measurements were carried out on GaAs devices in the frequency and temperature ranges from 10 Hz to 100 kHz, and from 77 K to 300 K, respectively. The noise spectra are considered to be superpositions of generation-recombination noise components caused by traps.
Shiyuan Yang +2 more
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Low-frequency noise spectroscopy
IEEE Transactions on Electron Devices, 1994Electrical noise in excess of thermal and shot noise is caused by imperfections in the device. Its control can improve the quality of the device and its measurement can give considerable information about the nature of the defects involved. For defects with discrete energy distributions spectroscopy can be used to identify the defect and measure its ...
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Low-frequency noise around airports
The Journal of the Acoustical Society of America, 1998The sound frequency weighting PNdB has been proposed by Kryter (1959) to assess the noise from jet engine aircrafts. Due to the technical evolution of aircraft engines, and to choose a frequency weighting common to all transport systems, the dB(A-weighted) has begun to be used as the acoustical unit around airports; the PNdB is still used for noise ...
Michel Vallet, Jean Claude Bruyere
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Radio and Electronic Engineer, 1971
To compare errors arising in a measuring instrument from drift and low frequency (1/f) noise, the behaviour of the latter in the time domain is calculated. The standard deviation is expressed in terms of the cut-off frequency and integration time of the instrument, and the frequency index of the noise, which can be measured at audio frequencies ...
G.G. Bloodworth, R.J. Hawkins
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To compare errors arising in a measuring instrument from drift and low frequency (1/f) noise, the behaviour of the latter in the time domain is calculated. The standard deviation is expressed in terms of the cut-off frequency and integration time of the instrument, and the frequency index of the noise, which can be measured at audio frequencies ...
G.G. Bloodworth, R.J. Hawkins
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Oceanic low frequency ambient noise
OCEANS 2000 MTS/IEEE Conference and Exhibition. Conference Proceedings (Cat. No.00CH37158), 2002Ambient noise has been attributed to bubbles spray and splash produced by wind action and breaking waves at the higher frequencies. However, the large bubbles required to produce low frequency noise are not found at sufficient depths and consequently whether low-to-mid-frequency noise (LMF, 10-500 Hz) was produced and by what mechanism has been a ...
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Precision low frequency noise measurement
7th IEEE Conference on Instrumentation and Measurement Technology, 2002Techniques have been developed for conveniently making precision (1%) noise spectral density measurements in the 10/sup -3/-kHz to 35-Hz or higher range. Application interest is particularly in the area of amplifier l/f noise measurement. Measurements are made by overlap averaging of the fast Fourier transform (FFT) with analog preconditioning of the ...
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Low-frequency noise in downscaled silicon transistors: Trends, theory and practice
Physics Reports, 2022Juan Antonio Jiménez Tejada +1 more
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