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An ultralow noise preamplifier for low frequency noise measurements

Review of Scientific Instruments, 2009
Low frequency noise measurements are among the most sensitive tools for the investigation of the quality and of the reliability of semiconductor devices. The sensitivity that can be obtained depends on the background noise of the low noise preamplifier coupled to the device under test (DUT) that, at very low frequencies, is dominated by flicker noise ...
CANNATA', GIANLUCA   +2 more
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Low-frequency noise in low 1/f noise dc SQUID’s

Applied Physics Letters, 1986
We demonstrate that the low-frequency noise in our edge junction dc superconducting quantum interference devices, with a basic 1/f flux noise of 2×10−12 Φ20/Hz at 1 Hz, can all be accounted for in terms of junction critical current fluctuations. A novel modulation readout scheme is able to cancel the effect of junction critical current fluctuations and
V Foglietti   +6 more
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Low-noise noise

The Journal of the Acoustical Society of America, 1985
A practical method of computation is described for making periodic signals V(t) which have a given frequency spectrum and which minimize the variance 〈(V2−〈V〉2)2〉 in power as a function of time. These signals can be used to measure the spectral response of a system (the transfer function): They represent a significant improvement over traditional ...
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Low Noise Low Power Amplifiers

2013
Various of noise sources in CMOS technology are introduced in this chapter, including KT/C noise, flicker noise, resistor and MOSFET’s thermal noise, etc. In order to decrease or even get rid of the noise especially the lower frequency noise, different kinds of low noise amplifiers are described. Then a design example is introduced.
Shupeng Zhong, Nianxiong Nick Tan
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Low noise burster

The Journal of the Acoustical Society of America, 1983
A burster for separating successive sheets of paper from a continuous web of paper has at least one output or draw roller having a larger diameter than the input or feed rollers with all of these rollers rotated at the same r.p.m. and a simple belt drive mounted on a pivotal double link with a one-to-one ratio provides for driving one set of rollers ...
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