Thermal noise is caused by black body radiation, a phenomenon in quantum physics, which was accurately described by Max Planck in 1901. The frequency and power of the emitted radiation depends on the temperature of the matter. This radiation, and also its noise, is therefore present everywhere in the universe.
CITATION STYLE
De Smedt, V., Gielen, G., & Dehaene, W. (2015). Jitter and Phase Noise in Oscillators. In Analog Circuits and Signal Processing (Vol. 128, pp. 61–90). Springer. https://doi.org/10.1007/978-3-319-09003-0_3
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