A low spur fractional-N frequency synthesizer architecture

Abstract

A new architecture of a fractional-N phase-locked loop (PLL) frequency synthesizer is presented in this paper. The unique feature of the proposed frequency synthesizer is a loop filter with a discrete time comb filter which allows for the efficient suppression of fractional spurs. The proposed loop filter architecture can be efficiently implemented using… (More)
DOI: 10.1109/ISCAS.2005.1465210

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