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Analysis of in-band spurious tones of VCO-based analog filters and mitigation techniques

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dc.affiliation.dptoUC3M. Departamento de Tecnología Electrónicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Diseño Microelectrónico y Aplicaciones (DMA)es
dc.contributor.authorMedina Huamán, Víctor Manuel
dc.contributor.authorLoi, Dante
dc.contributor.authorRombouts, Pieter
dc.contributor.authorHernández Corporales, Luis
dc.contributor.funderEuropean Commissionen
dc.contributor.funderAgencia Estatal de Investigación (España)es
dc.date.accessioned2023-07-25T07:50:21Z
dc.date.available2023-07-25T07:50:21Z
dc.date.issued2023-07-21
dc.descriptionProceedings of: 2023 IEEE International Symposium on Circuits and Systems (ISCAS), 21-25 May 2023, Monterey, USA.en
dc.description.abstractRecently VCO-based filters have been used to implement feature extraction in voice recognition systems. Typically implemented filter structures embed the VCOs in a feedback loop. In these implementations, harmonic distortion has been observed in the output signal. This harmonic distortion has been attributed to ring oscillator nonlinearity but its origin stems from a system level problem. In this manuscript we will analyze this problem by looking at the cross modulation of Pulse Frequency Modulation (PFM) side-bands and we will explain how this creates the previously misunderstood harmonic distortion. Moreover, we will propose efficient techniques to mitigate these harmonic components and show that they can easily be implemented in hardware.en
dc.description.sponsorshipThis paper was supported by program H2020-MSCA-ITN-2020 grant Nr. 956601 and project PID2020-118804RB-I00 of the Spanish Agency of Research (AEI) and by FWO-Vlaanderen.en
dc.format.extent5
dc.identifier.bibliographicCitationMedina, V., Loi, D., Rombouts, P. & Hernandez, L. (21-25 May, 2023). Analysis of in-band Spurious Tones of VCO-based Analog Filters and Mitigation Techniques [proceedings]. 2023 IEEE International Symposium on Circuits and Systems (ISCAS), Monterey, USA.en
dc.identifier.doihttps://doi.org/10.1109/ISCAS46773.2023.10181860
dc.identifier.isbn2158-1525
dc.identifier.publicationfirstpage1
dc.identifier.publicationlastpage5
dc.identifier.publicationtitle2023 IEEE International Symposium on Circuits and Systems (ISCAS)en
dc.identifier.urihttps://hdl.handle.net/10016/37979
dc.identifier.uxxiCC/0000034124
dc.language.isoengen
dc.publisherIEEEen
dc.relation.eventdate2023-05-21
dc.relation.eventplaceEstados Unidos de Américaes
dc.relation.eventtitle2023 IEEE International Symposium on Circuits and Systems (ISCAS)en
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/956601
dc.relation.projectIDGobierno de España. PID2020-118804RB-I00es
dc.rights© 2023 IEEEen
dc.rights.accessRightsopen accessen
dc.subject.ecienciaElectrónicaes
dc.subject.otherVCO-ADCen
dc.subject.otherPulse frequency modulationen
dc.subject.otherAnalog filtersen
dc.subject.otherVoice feature extractionen
dc.titleAnalysis of in-band spurious tones of VCO-based analog filters and mitigation techniquesen
dc.typeconference proceedings*
dc.type.hasVersionAM*
dspace.entity.typePublication
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