A family of alternating current amplifiers for ultra-low frequency operation

dc.contributor.authorMartincorena Arraiza, Maite
dc.contributor.authorCarlosena García, Alfonso
dc.contributor.authorCruz Blas, Carlos Aristóteles de la
dc.contributor.authorBeloso Legarra, Javier
dc.contributor.authorLópez Martín, Antonio
dc.contributor.departmentIngeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzareneu
dc.contributor.departmentInstitute of Smart Cities - ISCen
dc.contributor.departmentIngeniería Eléctrica, Electrónica y de Comunicaciónes_ES
dc.contributor.funderUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoaes
dc.date.accessioned2021-12-28T10:44:59Z
dc.date.available2021-12-28T10:44:59Z
dc.date.issued2021
dc.description.abstractA family of capacitively coupled alternating current (AC) amplifiers featuring ultra-low (below 1 Hz) corner frequency is presented. This is achieved by using high-gain devices which actively boost feedback resistance and thus reduce corner frequency. This procedure is often termed, though with a different purpose, as 'bootstrapping'. The proposed architectures are very general and admit several possible practical implementations. To demonstrate their usefulness, the circuits are implemented with two operational amplifiers (OA), but other active devices such as operational transconductance amplifiers (OTAs) can be alternatively used. All circuits have been theoretically analyzed, extensively simulated and measured, exhibiting high-pass cutoff frequencies as low as 30 mHz.en
dc.description.sponsorshipThis work was supported by AEI/FEDER (Grant PID2019‐107258RB‐C32), Ministry of Universities (grant BES‐2017‐080418), and Public University of Navarra.en
dc.format.extent11 p.
dc.format.mimetypeapplication/pdfen
dc.identifier.doi10.1002/cta.3122
dc.identifier.issn0098-9886
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/41489
dc.language.isoengen
dc.publisherWileyen
dc.relation.ispartofInternational Journal of Circuit Theory and Applications, Volume 49, Issue 10en
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-107258RB-C32/ES/
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/BES-2017-080418/
dc.relation.publisherversionhttp://doi.org/10.1002/cta.3122
dc.rights© 2021 The Authors. Creative Commons Attribution‐NonCommercial‐NoDerivs Licensees_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectAC amplifiersen
dc.subjectBiosignal amplifiersen
dc.subjectBootstrappingen
dc.subjectDC-blockingen
dc.subjectHigh-pass amplifiersen
dc.subjectNetwork transformationen
dc.subjectNullorsen
dc.titleA family of alternating current amplifiers for ultra-low frequency operationen
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
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