Wandering spur suppression in a 4.9-GHz fractional-N frequency synthesizer

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dc.contributor.authorMai, Dawei
dc.contributor.authorDonnelly, Yann
dc.contributor.authorKennedy, Michael Peter
dc.contributor.authorTulisi, Stefano
dc.contributor.authorBreslin, James
dc.contributor.authorGriffin, Patrick
dc.contributor.authorConnor, Michael
dc.contributor.authorBrookes, Stephen
dc.contributor.authorShelly, Brian
dc.contributor.authorKeaveney, Mike
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderEnterprise Irelanden
dc.date.accessioned2022-04-21T13:54:10Z
dc.date.available2022-04-21T13:54:10Z
dc.date.issued2022-04-15
dc.date.updated2022-04-21T08:56:01Z
dc.description.abstractFractional-N frequency synthesizers that use a digital Δ-Σ modulator (DDSM) to control the feedback divider can exhibit spurious tones that move about in the frequency domain; these are known colloquially as ``walking'' or wandering spurs. Building upon a theoretical explanation of the origin of wandering spurs, this article presents two methods to suppress them. It describes a 4.9-GHz 180-nm SiGe BiCMOS charge-pump phase-locked loop (CP-PLL) fractional-N frequency synthesizer platform with a divider controller that can function as: 1) a standard MASH 1-1-1; 2) a MASH 1-1-1 with high-amplitude dither; and 3) a MASH 1-1-1 with a modified third stage. Measurements confirm the effectiveness of the wandering spur suppression strategies.en
dc.description.sponsorshipScience Foundation Ireland (Grant 20/FFP-A/8371); Enterprise Ireland (Grant TC-2015-0019)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMai, D., Donnelly, Y., Kennedy, M. P., Tulisi, S., Breslin, J., Griffin, P., Connor, M., Brookes, S., Shelly, B. and Keaveney, M. (2022) 'Wandering spur suppression in a 4.9-GHz fractional-N frequency synthesizer', IEEE Journal of Solid-State Circuits. doi: 10.1109/JSSC.2022.3163080en
dc.identifier.doi10.1109/JSSC.2022.3163080en
dc.identifier.eissn1558-173X
dc.identifier.issn0018-9200
dc.identifier.journaltitleIEEE Journal of Solid-State Circuitsen
dc.identifier.urihttps://hdl.handle.net/10468/13106
dc.language.isoenen
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Investigator Programme/13/IA/1979/IE/Advanced Frequency Synthesis Informed by Nonlinear Dynamics/en
dc.rights© 2022 IEEE. For the purpose of open access, the authors have applied a CCBY public copyright license to any author accepted manuscript version arising from this submission.en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectDivider controlleren
dc.subjectFractional-N frequency synthesizersen
dc.subjectPhase noiseen
dc.subjectPhase-locked loops (PLLs)en
dc.subjectQuantization noiseen
dc.subjectSpurious tonesen
dc.subjectMASH digital Δ-Σ modulator (DDSM)en
dc.titleWandering spur suppression in a 4.9-GHz fractional-N frequency synthesizeren
dc.typeArticle (peer-reviewed)en
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