Current-starved inverter cell design trade-offs for single capacitively coupled ring VCOs

Sabaj, Ilan - Bernárdez, Santiago - Valettute, Ignacio - Siniscalchi, Mariana

Resumen:

This paper presents a comparative study of inverter cell topologies for use in a single capacitively coupled (SCC) ring VCO targeting multi-phase RF applications. Three inverter cells are investigated: nMOS-only (N), pMOS-only (P), and complementary nMOS-pMOS (NP), each implemented with current-starved control for frequency tuning. The cells are designed in 28−nm FD-SOI technology under a common parameterization, ensuring that performance differences arise from intrinsic architectural properties rather than transistor sizing. Simulation results compare frequency tuning range, power consumption, output swing, signal symmetry and phase noise. The N cell achieves the widest tuning range, the NP cell offers better symmetry and the P cell shows limited swing and higher asymmetry but with lower power consumption. These results reveal intrinsic trade-offs between efficiency, signal integrity, and spectral purity, providing practical guidelines for inverter selection in SCC VCO designs.

Detalles Bibliográficos
2026
Los autores desean agradecer a CSIC de Universidad de la República, Uruguay.
Ring VCO
Current starving
Multi-phase oscillators
Low-power RF design
Inglés
Universidad de la República
COLIBRI
https://hdl.handle.net/20.500.12008/54665
Acceso abierto
Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0)
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author Sabaj, Ilan
author2 Bernárdez, Santiago
Valettute, Ignacio
Siniscalchi, Mariana
author2_role author
author
author
author_facet Sabaj, Ilan
Bernárdez, Santiago
Valettute, Ignacio
Siniscalchi, Mariana
author_role author
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collection COLIBRI
dc.contributor.filiacion.none.fl_str_mv Sabaj Ilan, Universidad de la República (Uruguay). Facultad de Ingeniería.
Bernárdez Santiago, Universidad de la República (Uruguay). Facultad de Ingeniería.
Valettute Ignacio, Universidad de la República (Uruguay). Facultad de Ingeniería.
Siniscalchi Mariana, Universidad de la República (Uruguay). Facultad de Ingeniería.
dc.creator.none.fl_str_mv Sabaj, Ilan
Bernárdez, Santiago
Valettute, Ignacio
Siniscalchi, Mariana
dc.date.accessioned.none.fl_str_mv 2026-04-29T13:35:07Z
dc.date.available.none.fl_str_mv 2026-04-29T13:35:07Z
dc.date.issued.none.fl_str_mv 2026
dc.description.abstract.none.fl_txt_mv This paper presents a comparative study of inverter cell topologies for use in a single capacitively coupled (SCC) ring VCO targeting multi-phase RF applications. Three inverter cells are investigated: nMOS-only (N), pMOS-only (P), and complementary nMOS-pMOS (NP), each implemented with current-starved control for frequency tuning. The cells are designed in 28−nm FD-SOI technology under a common parameterization, ensuring that performance differences arise from intrinsic architectural properties rather than transistor sizing. Simulation results compare frequency tuning range, power consumption, output swing, signal symmetry and phase noise. The N cell achieves the widest tuning range, the NP cell offers better symmetry and the P cell shows limited swing and higher asymmetry but with lower power consumption. These results reveal intrinsic trade-offs between efficiency, signal integrity, and spectral purity, providing practical guidelines for inverter selection in SCC VCO designs.
dc.description.sponsorship.none.fl_txt_mv Los autores desean agradecer a CSIC de Universidad de la República, Uruguay.
dc.format.extent.es.fl_str_mv 5 p.
dc.format.mimetype.es.fl_str_mv application/pdf
dc.identifier.citation.es.fl_str_mv Sabaj, I., Bernárdez, S., Valettute, I. y otros. Current-starved inverter cell design trade-offs for single capacitively coupled ring VCOs [en línea]. EN: 2026 IEEE 17th Latin America Symposium on Circuits and Systems (LASCAS), Arequipa, Peru, 24-27 feb. 2026, pp. 1-5.
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/20.500.12008/54665
dc.language.iso.none.fl_str_mv en
eng
dc.relation.none.fl_str_mv 2026 IEEE 17th Latin America Symposium on Circuits and Systems (LASCAS), Arequipa, Peru, 24-27 feb. 2026, pp. 1-5.
dc.rights.license.none.fl_str_mv Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0)
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
dc.source.none.fl_str_mv reponame:COLIBRI
instname:Universidad de la República
instacron:Universidad de la República
dc.subject.es.fl_str_mv Ring VCO
Current starving
Multi-phase oscillators
Low-power RF design
dc.title.none.fl_str_mv Current-starved inverter cell design trade-offs for single capacitively coupled ring VCOs
dc.type.es.fl_str_mv Ponencia
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
dc.type.version.none.fl_str_mv info:eu-repo/semantics/publishedVersion
description This paper presents a comparative study of inverter cell topologies for use in a single capacitively coupled (SCC) ring VCO targeting multi-phase RF applications. Three inverter cells are investigated: nMOS-only (N), pMOS-only (P), and complementary nMOS-pMOS (NP), each implemented with current-starved control for frequency tuning. The cells are designed in 28−nm FD-SOI technology under a common parameterization, ensuring that performance differences arise from intrinsic architectural properties rather than transistor sizing. Simulation results compare frequency tuning range, power consumption, output swing, signal symmetry and phase noise. The N cell achieves the widest tuning range, the NP cell offers better symmetry and the P cell shows limited swing and higher asymmetry but with lower power consumption. These results reveal intrinsic trade-offs between efficiency, signal integrity, and spectral purity, providing practical guidelines for inverter selection in SCC VCO designs.
eu_rights_str_mv openAccess
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identifier_str_mv Sabaj, I., Bernárdez, S., Valettute, I. y otros. Current-starved inverter cell design trade-offs for single capacitively coupled ring VCOs [en línea]. EN: 2026 IEEE 17th Latin America Symposium on Circuits and Systems (LASCAS), Arequipa, Peru, 24-27 feb. 2026, pp. 1-5.
instacron_str Universidad de la República
institution Universidad de la República
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publishDate 2026
reponame_str COLIBRI
repository.mail.fl_str_mv karina.camps@seciu.edu.uy
repository.name.fl_str_mv COLIBRI - Universidad de la República
repository_id_str 4771
rights_invalid_str_mv Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0)
spelling Sabaj Ilan, Universidad de la República (Uruguay). Facultad de Ingeniería.Bernárdez Santiago, Universidad de la República (Uruguay). Facultad de Ingeniería.Valettute Ignacio, Universidad de la República (Uruguay). Facultad de Ingeniería.Siniscalchi Mariana, Universidad de la República (Uruguay). Facultad de Ingeniería.2026-04-29T13:35:07Z2026-04-29T13:35:07Z2026Sabaj, I., Bernárdez, S., Valettute, I. y otros. Current-starved inverter cell design trade-offs for single capacitively coupled ring VCOs [en línea]. EN: 2026 IEEE 17th Latin America Symposium on Circuits and Systems (LASCAS), Arequipa, Peru, 24-27 feb. 2026, pp. 1-5.https://hdl.handle.net/20.500.12008/54665This paper presents a comparative study of inverter cell topologies for use in a single capacitively coupled (SCC) ring VCO targeting multi-phase RF applications. Three inverter cells are investigated: nMOS-only (N), pMOS-only (P), and complementary nMOS-pMOS (NP), each implemented with current-starved control for frequency tuning. The cells are designed in 28−nm FD-SOI technology under a common parameterization, ensuring that performance differences arise from intrinsic architectural properties rather than transistor sizing. Simulation results compare frequency tuning range, power consumption, output swing, signal symmetry and phase noise. The N cell achieves the widest tuning range, the NP cell offers better symmetry and the P cell shows limited swing and higher asymmetry but with lower power consumption. These results reveal intrinsic trade-offs between efficiency, signal integrity, and spectral purity, providing practical guidelines for inverter selection in SCC VCO designs.Submitted by Ribeiro Jorge (jribeiro@fing.edu.uy) on 2026-04-28T22:52:10Z No. of bitstreams: 2 license_rdf: 27293 bytes, checksum: d62648cf14c1e37917d392ac87012955 (MD5) SBVS26.pdf: 504429 bytes, checksum: 060ccb3801345bb88c24334165b05b5c (MD5)Approved for entry into archive by Machado Jimena (jmachado@fing.edu.uy) on 2026-04-29T13:12:35Z (GMT) No. of bitstreams: 2 license_rdf: 27293 bytes, checksum: d62648cf14c1e37917d392ac87012955 (MD5) SBVS26.pdf: 504429 bytes, checksum: 060ccb3801345bb88c24334165b05b5c (MD5)Made available in DSpace by Luna Fabiana (fabiana.luna@seciu.edu.uy) on 2026-04-29T13:35:07Z (GMT). No. of bitstreams: 2 license_rdf: 27293 bytes, checksum: d62648cf14c1e37917d392ac87012955 (MD5) SBVS26.pdf: 504429 bytes, checksum: 060ccb3801345bb88c24334165b05b5c (MD5) Previous issue date: 2026Los autores desean agradecer a CSIC de Universidad de la República, Uruguay.5 p.application/pdfeneng2026 IEEE 17th Latin America Symposium on Circuits and Systems (LASCAS), Arequipa, Peru, 24-27 feb. 2026, pp. 1-5.Las obras depositadas en el Repositorio se rigen por la Ordenanza de los Derechos de la Propiedad Intelectual de la Universidad de la República.(Res. Nº 91 de C.D.C. de 8/III/1994 – D.O. 7/IV/1994) y por la Ordenanza del Repositorio Abierto de la Universidad de la República (Res. Nº 16 de C.D.C. de 07/10/2014)info:eu-repo/semantics/openAccessLicencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0)Ring VCOCurrent starvingMulti-phase oscillatorsLow-power RF designCurrent-starved inverter cell design trade-offs for single capacitively coupled ring VCOsPonenciainfo:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionreponame:COLIBRIinstname:Universidad de la Repúblicainstacron:Universidad de la RepúblicaSabaj, IlanBernárdez, SantiagoValettute, IgnacioSiniscalchi, MarianaElectrónicaMicroelectrónicaLICENSElicense.txtlicense.txttext/plain; charset=utf-84267http://localhost:8080/xmlui/bitstream/20.500.12008/54665/5/license.txt6429389a7df7277b72b7924fdc7d47a9MD55CC-LICENSElicense_urllicense_urltext/plain; charset=utf-850http://localhost:8080/xmlui/bitstream/20.500.12008/54665/2/license_urla006180e3f5b2ad0b88185d14284c0e0MD52license_textlicense_texttext/html; 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- Universidad de la Repúblicafalse
spellingShingle Current-starved inverter cell design trade-offs for single capacitively coupled ring VCOs
Sabaj, Ilan
Ring VCO
Current starving
Multi-phase oscillators
Low-power RF design
status_str publishedVersion
title Current-starved inverter cell design trade-offs for single capacitively coupled ring VCOs
title_full Current-starved inverter cell design trade-offs for single capacitively coupled ring VCOs
title_fullStr Current-starved inverter cell design trade-offs for single capacitively coupled ring VCOs
title_full_unstemmed Current-starved inverter cell design trade-offs for single capacitively coupled ring VCOs
title_short Current-starved inverter cell design trade-offs for single capacitively coupled ring VCOs
title_sort Current-starved inverter cell design trade-offs for single capacitively coupled ring VCOs
topic Ring VCO
Current starving
Multi-phase oscillators
Low-power RF design
url https://hdl.handle.net/20.500.12008/54665