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A nonlinear shaping technique for a switched-capacitor (SC) bandpass filter (BPF) based oscillator yielding enhanced linearity is presented. Usually, for an SC oscillator consisting of a BPF and a two-level comparator, the linearity can only be improved by increasing the quality factor (Q-factor) of the BPF. This paper proposes an efficient way to improve the linearity of SC BPFbased oscillators. In particular, by replacing the conventional twolevel comparator by a sound multilevel comparator,doi:10.1109/jssc.2007.907167 fatcat:ha7lfvarqrfhtc3pzbuklbdp3a