3. Noise in linear circuits
3.1 Noise representations
3.1.1 Conductance / equivalent noise resistance
Thermal noise (§ 2.1) is ubiquitous white noise. It is the minimum component noise, and therefore naturally serves as a reference. It can be reduced by cooling the equipment, as is done in scientific experiments approaching absolute zero.
To describe a noise source in the Norton representation (figure
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Noise in linear circuits
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