Low-frequency noise and impedance spectral characteristics of solid-state structures

2004 ◽  
Vol 49 (11) ◽  
pp. 617-621 ◽  
Author(s):  
I. V. Lebedev ◽  
I. N. Miroshnikova ◽  
D. V. Chuprov
Keyword(s):  
Solid State ◽  
Spectral Characteristics ◽  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Solid State Structures

Low-Frequency Noise Characterization in Charge-Based Coherent Nanodevices

2006 ◽  
Vol 13 (03) ◽  
pp. 323-332 ◽  
Author(s):  
G. Falci ◽  
A. Mastellone ◽  
A. D'Arrigo ◽  
E. Paladino
Keyword(s):  
Solid State ◽  
Degrees Of Freedom ◽  
Low Frequency ◽  
Measured Signal ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Noise Sources ◽  
Quantum Bits ◽  
Homogeneous Broadening ◽  
Noise Characterization

Low-frequency noise has been recognized as the main mechanism of decoherence in present-day solid state coherent nanodevices. Often low-frequency noise has a 1/f spectrum, thus the responsible degrees of freedom are almost static during the coherent time evolution of the device. Their effect is to reduce the amplitude of the measured signal by an effect analogous to in-homogeneous broadening in NMR. Here we present a way to characterize effects of adiabatic noise exploiting the tunability of nanodevices. The results apply in principle to many implementations of quantum bits, and are particularly suited for solid state devices. The accurate characterization of the physics of the noise sources represents the first step toward the design specific strategies to eliminate their effects.

scholarly journals Application Study of Adaptive Tracking Algorithm in Active Noise Control System of Transformer

2019 ◽  
Vol 9 (13) ◽  
pp. 2693 ◽  
Author(s):  
Liming Ying ◽  
Jinwei Wang ◽  
Qin Liu ◽  
Donghui Wang
Keyword(s):  
Noise Reduction ◽  
Noise Control ◽  
Spectral Characteristics ◽  
Active Noise Control ◽  
Low Frequency ◽  
Cost Effective ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Active Noise ◽  
Reduction Methods

Active noise control (ANC) technology can be able to reduce the low frequency noise effectively, and has been widely applied in limited enclosed equipment, such as cars, aircraft cockpits, and headphones, etc. Compared with the traditional noise reduction methods, ANC technology is a cost-effective method in handling the low-frequency noise of transformers. An experimental ANC system in a virtual substation is designed and constructed. An adaptive signal tracking ANC algorithm is proposed, and a set of ANC experimental prototypes applied to a virtual substation is designed. Based on the proposed algorithm, the distributions of the acoustics and spectral characteristics of transformer noise in substations are analyzed. Experimental results show that the effective noise reduction can be achieved an average of 5 dB(A) in a given region with respect to the absence of the ANC system.

Low-frequency noise in solid-state nanopores

2009 ◽  
Vol 20 (9) ◽  
pp. 095501 ◽  
Author(s):  
R M M Smeets ◽  
N H Dekker ◽  
C Dekker
Keyword(s):  
Solid State ◽  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise

Estimating the Quality of Thermionic Cathodes for Microwave Vacuum Tubes Using the Low-Frequency Noise Parameters

Vestnik MEI ◽  
2018 ◽  
Vol 5 (5) ◽  
pp. 120-127
Author(s):  
Mikhail D. Vorobyev ◽  
◽  
Dmitriy N. Yudaev ◽  
Andrey Yu. Zorin ◽  
◽  
...  
Keyword(s):  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Noise Parameters ◽  
Thermionic Cathodes ◽  
Vacuum Tubes

Simulation of Low Frequency Noise in a CCTWT

1999 ◽  
Author(s):  
Charles K. Birdsall ◽  
J. P. Varboncoeur ◽  
P. J. Christensen
Keyword(s):  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise
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