Current-starved inverter cell design trade-offs for single capacitively coupled ring VCOs
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.
| 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) |
| _version_ | 1875692335886499840 |
|---|---|
| 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 |
| format | conferenceObject |
| id | COLIBRI_cd8daf25c06a4e4e054f47320fad88e3 |
| 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 |
| instname_str | Universidad de la República |
| language | eng |
| language_invalid_str_mv | en |
| network_acronym_str | COLIBRI |
| network_name_str | COLIBRI |
| oai_identifier_str | oai:colibri.udelar.edu.uy:20.500.12008/54665 |
| 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 |