Results 31 to 40 of about 2,394,133 (199)

Shot noise of series quantum point contacts intercalating chaotic cavities [PDF]

open access: yes, 2002
Shot noise of series quantum point contacts forming a sequence of cavities in a two dimensional electron gas are studied theoretically and experimentally.
A. Kumar   +18 more
core   +3 more sources

Low noise figure C+L-band erbium-droped fiber amplifier

open access: yesDianxin kexue, 2017
A new configuration of the low noise figure C+L-band erbium-doped fiber amplifier was proposed and demonstrated.In the proposed configuration,a preamplifier was used to reduce the noise figure,and an improved double-pass configuration with a fiber bragg ...
Hangdong ZHANG, Li ZHAN
doaj   +2 more sources

Low Noise Amplifier at 60 GHz Using Low Loss On-Chip Inductors

open access: yesJournal of Electrical and Computer Engineering, 2023
This paper proposes the technique of using low loss on-chip inductors in the design of low noise amplifier (LNA) that offers high gain and lower noise figure.
Karthigha Balamurugan   +2 more
doaj   +1 more source

The noise properties of stochastic processes and entropy production [PDF]

open access: yes, 2001
Based on a Fokker-Planck description of external Ornstein-Uhlenbeck noise and cross-correlated noise processes driving a dynamical system we examine the interplay of the properties of noise processes and the dissipative characteristic of the dynamical ...
A. Compte   +18 more
core   +2 more sources

Spatio-temporal dynamics of impulse responses to figure motion in optic flow neurons. [PDF]

open access: yesPLoS ONE, 2015
White noise techniques have been used widely to investigate sensory systems in both vertebrates and invertebrates. White noise stimuli are powerful in their ability to rapidly generate data that help the experimenter decipher the spatio-temporal dynamics
Yu-Jen Lee   +2 more
doaj   +1 more source

Noise in Al single electron transistors of stacked design

open access: yes, 1998
We have fabricated and examined several Al single electron transistors whose small islands were positioned on top of a counter electrode and hence did not come into contact with a dielectric substrate.
Krupenin, V. A.   +5 more
core   +1 more source

Design of a 0.5–18 GHz Wideband Switching Matrix Box for Electronic Support Measurement [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2020
In this paper, we design and fabricate a broadband switching matrix box with low-noise figure, flat gain characteristics, and reliability by applying the chip-and-wire process using a bare-type MMIC device.
Yuseok Jeon, Jaejin Koo
doaj   +1 more source

Technique for lowering the noise figure in RF amplifiers [PDF]

open access: yes, 1970
Low-level RF amplifiers are operated at noise figures at or near the theoretical minimum, while maintaining high-gain stability. Formulas for the minimum amplifier noise figure value are derived from the analytical noise-figure expression involving the ...
Bellomo, A. F.
core   +1 more source

Effect of doping on the optical gain and the spontaneous noise enhancement factor in quantum well amplifiers and lasers studied by simple analytical expressions [PDF]

open access: yes, 1988
The maximum optical gain and the spontaneous noise enhancement factor in quantum well structures are expressed as extremely simple functions that are accurate over a wide range of carrier densities.
Vahala, Kerry J., Zah, C. E.
core   +1 more source

Noise spectra of stochastic pulse sequences: application to large scale magnetization flips in the finite size 2D Ising model

open access: yes, 2008
We provide a general scheme to predict and derive the contribution to the noise spectrum of a stochastic sequence of pulses from the distribution of pulse parameters.
Clare C. Yu, K. Huang, Zhi Chen
core   +2 more sources

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