Low-noise amplifier - Wikipedia
https://en.wikipedia.org/wiki/Low-noise_amplifier
OverviewCommunicationsDesign considerationsApplicationsSee alsoFurther readingExternal linksA low-noise amplifier (LNA) is an electronic amplifier that amplifies a very low-power signal without significantly degrading its signal-to-noise ratio. An amplifier will increase the power of both the signal and the noise present at its input, but the amplifier will also introduce some additional noise. LNAs are designed to minimize that additional noise. Designers can minimize additional noise by choosing low-noise components, operating points, and circuit topologies. Minimizing additional …
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