Switched capacitor circuit for 1/fnoise generation using a power‐law circuit

摘要

AbstractA simple switched capacitor (SC) circuit is given which realizes a one‐dimensional discrete dynamical systemXn+1 =Xn+uxzgenerating intermittent chaos with a 1/f‐shaped power spectrum. an integrated circuit with a pair of logarithmic and antilogarithmic amplifiters can easily realize the power‐law term xzwhich plays a key role in generating l/fnoise. an inevitable small offset voltage ϵ in the SC circuit governs the cut‐off frequency of 1/fnoise, and when the dynamical system is modified by introducing an effective ϵ, the ‘indirect method’ enables us to get the precise power spectrum in the mo