scholarly journals Statistical Supervised Learning With Engineering Data: A Case Study of Low Frequency Noise Measured On Semiconductor Devices

2021 ◽  
Author(s):  
ML Gamiz ◽  
Anton Kalen ◽  
Rafael Nozal-Cañadas ◽  
Rocio Raya-Miranda
Keyword(s):  
Threshold Voltage ◽  
Low Frequency ◽  
Relevant Information ◽  
Frequency Noise ◽  
Noise Current ◽  
New Strategy ◽  
Nonparametric Techniques ◽  
Backfitting Algorithm ◽  
Standard Techniques

Abstract Our practical motivation is the analysis of potential correlations between spectral noise current and threshold voltage from common on-wafer MOSFETs. The usual strategy leads to the use of standard techniques based on Normal linear regression easily accessible in all statistical software (both free or commercial). However, these statistical methods are not appropriate because the assumptions they lie on are not met. More sophisticated methods are required. A new strategy based on the most novel nonparametric techniques which are data-driven and thus free from questionable parametric assumptions is proposed. A backfitting algorithm accounting for random effects and nonparametric regression is designed and implemented. The nature of the correlation between threshold voltage and noise is examined by conducting a statistical test, which is based on a novel technique that summarizes in a color map all the relevant information of the data. The way the results are presented in the plot makes it easy for a non-expert in data analysis to understand what is underlying. The good performance of the method is proven through simulations and it is applied to a data case in a field where these modern statistical techniques are novel and result very efficient.

An Integrated Acoustic/Microseismic Approach to Monitoring Low Frequency Noise & Vibration — A Case Study

2003 ◽  
Vol 10 (1) ◽  
pp. 77-95 ◽  
Author(s):  
Ian Rushforth ◽  
Andy Moorhouse ◽  
Peter Styles
Keyword(s):  
Low Frequency ◽  
Frequency Noise ◽  
Industrial Site ◽  
Low Frequency Noise ◽  
Integrated Method ◽  
Source Determination ◽  
Vibration Problems ◽  
Noise Vibration ◽  
Technique Comparison

It is proposed that low frequency noise/vibration problems are best tackled by a combination of acoustic and microseismic methods, rather than using each method in isolation. A new integrated method was devised and it was demonstrated that ‘the whole is greater than the sum of the parts’. The benefits and versatility of the new method are illustrated with reference to a case study. Unmanned monitoring took place at several houses near to an industrial site, using a multi-channel recording technique. Comparison of various components of the sound and vibration fields in each house was then carried out, which allowed various propagation paths to be distinguished. A range of further signal processing analyses was also employed to aid source determination.

DYNAMIC PROPERTIES OF SEQUENTIAL TUNNELING THROUGH DOUBLE-BARRIER SYSTEMS

1993 ◽  
Vol 07 (26) ◽  
pp. 1677-1686 ◽  
Author(s):  
L.Y. CHEN
Keyword(s):  
Power Density ◽  
Dynamic Properties ◽  
Low Frequency ◽  
Frequency Noise ◽  
Charge Accumulation ◽  
Significant Suppression ◽  
Finite Frequency ◽  
Double Barrier ◽  
Noise Current ◽  
Dynamic Conductance

In this paper, we present an analytical stochastical approach to the dynamic properties of sequential tunneling through double-barrier systems. The effect of charge accumulation is included in the investigation of dynamic conductance and noise current power density at finite frequency. Albeit in the sequential tunneling limit the quantum phase coherence of electron waves is destroyed by inelastic scattering while traversing the junction, the occupation of resonance states by fermionic particles sojourning in the well along with the charge accumulation within and around the structure still give rise to strong correlation among tunneling events. This correlation determines the characteristic frequency of the system and leads to significant suppression of shot noise. The low frequency noise current power density compares agreeably with experimental measurements.

Advanced acoustical material tuned for low frequency noise reduction: a case study

2008 ◽  
Vol 123 (5) ◽  
pp. 3811-3811
Author(s):  
Kathleen Kondylas ◽  
Natalia Levit ◽  
Joseph A. King ◽  
Chris R. Fuller
Keyword(s):  
Noise Reduction ◽  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise

scholarly journals On the Control of Low-Frequency Audible Noise from Electrical Substations: A Case Study

2020 ◽  
Vol 10 (2) ◽  
pp. 637 ◽  
Author(s):  
Edoardo Alessio Piana ◽  
Nicolaas Bernardus Roozen
Keyword(s):  
Power Distribution ◽  
Distribution Systems ◽  
Methodological Approach ◽  
Low Frequency ◽  
Mitigation Measures ◽  
Propagation Path ◽  
Frequency Noise ◽  
Subjective Response ◽  
Low Frequency Noise

With the world facing the urgency of energy transition, the development of efficient and quiet electrical infrastructures is of topical importance in the construction of the environment of the future. The problem of noise from power distribution systems is often underestimated, although several works in the literature underline the effect of disturbance on the population, especially concerning the low frequency range. This paper overviews the issue of the low-frequency noise generated by electrical substations, from the experimental characterization of the source to the possible mitigation measures at the source, along the propagation path and at the receiver. Alongside the general presentation, a case study serves as a practical demonstration of the proposed methodological approach. It was found that in the investigated situation the main disturbance comes from the transformer at two low-frequency harmonics of twice the networking frequency. A traditional noise barrier is designed taking into account the strict size constraints imposed by technical compatibility with the electrical infrastructure, which limits its efficacy at low frequency. Noise masking with broadband signals can be a complementary solution to further reduce noise disturbance and contain it within prescribed limits. The evaluation of subjective response of the receivers to different mitigation solutions is made possible by the availability of the impulse response.

scholarly journals Low-frequency noise inδ13C andδ18O tree ring data: A case study ofPinus uncinatain the Spanish Pyrenees

2010 ◽  
Vol 24 (4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Jan Esper ◽  
David C. Frank ◽  
Giovanna Battipaglia ◽  
Ulf Büntgen ◽  
Christopher Holert ◽  
...  
Keyword(s):  
Tree Ring ◽  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Tree Ring Data ◽  
Spanish Pyrenees

A Case Study of Low Frequency Noise Assessed Using DIN 45680 Criteria

Noise Notes ◽  
2004 ◽  
Vol 3 (1) ◽  
pp. 3-18 ◽  
Author(s):  
Ian Rushforth ◽  
Andy Moorhouse ◽  
Peter Styles
Keyword(s):  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise

scholarly journals Low Frequency Noise in Tantalum Capacitors

1987 ◽  
Vol 12 (4) ◽  
pp. 215-221 ◽  
Author(s):  
D. T. Smith
Keyword(s):  
Power Spectrum ◽  
Bias Voltage ◽  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Noise Current

Noise has been measured in a number of biased solid tantalum capacitors at frequencies down to 0.01 Hz. The noise current was found to have a 1/f power spectrum, and the amplitude varied with the bias voltage with a law in the range 1st to 4th power. There was a large difference in amplitudes between different capacitors of the same type.

scholarly journals Investigation of Low Frequency Noise-current Correlation for the InAs/GaSb T2SL Long-wavelength Infrared Detector

2021 ◽  
Author(s):  
Liang Wang ◽  
Liqi Zhu ◽  
Zhicheng Xu ◽  
Fangfang Wang ◽  
Jianxin Chen ◽  
...  
Keyword(s):  
Dark Current ◽  
Reverse Bias ◽  
Infrared Detector ◽  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Long Wavelength ◽  
Noise Current ◽  
Current Correlation ◽  
Long Wavelength Infrared

Abstract In this paper, a mesa-type 256×8 long-wavelength infrared detector is prepared by using InAs/GaSb type-II superlattice material with double barrieres structure. the area of each pixel is 25×25 μm2. The cut-off wavelength and dark current density of the detector at -0.05 V bias with liquid nitrogen temperature is 11.5 μm and 4.1×10-4 A/cm2, respectively. The power spectrum of low-frequency noise (1/f noise) at different temperatures have also been fitted by the Hooge model, and the correlations with dark current are extracted subsequently. The results shown that the 1/f noise of the detector is mainly caused by the generation-recombination current at a low reverse bias, however, when the reverse bias is high, the 1/f noise should be expressed by the sum of Igr noise and Ibtb noise which is ignored in the previous research. The 1/f noise-current correlation assessed in this work can provide insights into the low frequency noise characteristics of long-wavelength T2SL InAs/GaSb detectors, and allow for a better understanding of the main source of low-frequency noise.

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