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Very simple FET amplifier with a voltage noise floor less than 1 nV/sqrt(Hz)

Instrumentation and Detectors 2008-11-19 v1
Authors: Luca Callegaro , Marco Pisani , Alessio Pollarolo
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Abstract

A field-effect transistor (FET) amplifier for small voltage signals is presented. Its design is elementary and the construction can be afforded by anyone. Despite its simplicity, with a voltage noise less than 1 nV/sqrt(Hz), it outperforms commercially available integrated FET amplifiers. The amplifier has a gain flatness better than 1 dB over 1 MHz bandwidth; it can be employed as a front-end for signal analyzers or signal recovery systems.

Keywords

FET amplifier voltage noise gain flatness signal recovery low-noise amplifier

Cite

@article{arxiv.0811.2866,
  title  = {Very simple FET amplifier with a voltage noise floor less than 1 nV/sqrt(Hz)},
  author = {Luca Callegaro and Marco Pisani and Alessio Pollarolo},
  journal= {arXiv preprint arXiv:0811.2866},
  year   = {2008}
}

Comments

3 figures

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