The electrical characteristics of random RC networks and the physical origin of 1/f noise
2001
Simulations of the electrical noise in large networks of randomly positioned resistors and capacitors show a network noise power spectral density that varies as 1/fα(0<α<1). This is found to occur across the frequency range over which the effective network dielectric loss, tan δ, is almost constant. It is suggested that the origin of 1/f noise, for some materials, is an inhomogenous microstructure that acts as an effectively random network of conductive and capacitive regions.
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