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A Family of ∆Σ Modulators with High Spur Immunity and Low Folded Nonlinearity Noise when used in Fractional-N Frequency Synthesizers

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posted on 2022-04-27, 04:44 authored by Michael Peter KennedyMichael Peter Kennedy, Valerio Mazzaro

Digital Delta Sigma modulators (DDSM) are typically used in phase locked loops for fractional frequency synthesis. Different types and configurations of DDSMs have been presented in the past which have distinctive characteristics in terms of spectral shaping of the quantization errors, spur immunity and implementation cost. In this paper we present a family of DDSMs that have high spur immunity and low folded noise when used in fractional-N frequency synthesizers.


Science Foundation Ireland Grant numbers 13/IA/1979 and 20/FFP-A/8371

Enterprise Ireland Grant number TC-2015-0019


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Submitting Author's Institution

University College Dublin

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  • Ireland

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