Analysis and modeling of super-regenerative oscillators with FSCW signals

Active transponders based on super-regenerative oscillators (SROs) have the advantages of a high gain, low consumption, and a compact implementation. They rely on a switched oscillator excited by a low amplitude frequency modulated continuous-wave (FMCW) signal, which provides an approximately phase...

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Autores: Sancho Lucio, Sergio Miguel|||0000-0003-3343-1053, Pontón Lobete, María Isabel|||0000-0001-8537-1502, Suárez Rodríguez, Almudena|||0000-0002-5266-5544
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/35323
Acceso en línea:https://hdl.handle.net/10902/35323
Access Level:acceso abierto
Palabra clave:Active transponder
Envelope transient
Superregenerative oscillator (SRO)
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spelling Analysis and modeling of super-regenerative oscillators with FSCW signalsSancho Lucio, Sergio Miguel|||0000-0003-3343-1053Pontón Lobete, María Isabel|||0000-0001-8537-1502Suárez Rodríguez, Almudena|||0000-0002-5266-5544Active transponderEnvelope transientSuperregenerative oscillator (SRO)Active transponders based on super-regenerative oscillators (SROs) have the advantages of a high gain, low consumption, and a compact implementation. They rely on a switched oscillator excited by a low amplitude frequency modulated continuous-wave (FMCW) signal, which provides an approximately phase-coherent response. Due to the complexity of their operation mode, involving the start-up transient and a time-varying phase shift, their realistic modeling is demanding. Here, we present an in-depth semianalytical investigation of an SRO transponder excited by a frequency-stepped signal, which includes, for the first time to our knowledge, a thorough analysis of the noise perturbations. The SRO is analyzed with a 2-D envelope-domain formulation, derived from a current function extracted from harmonic balance. As will be shown, the SRO response to the incoming signal can be predicted with two nonlinear functions, corresponding to the amplitude and phase, obtained in a single oscillation interval. We will derive an Ornstein?Uhlenbeck system from which the variance of the SRO amplitude and phase will be determined through a detailed analytical approach. Like the SRO response, the noise behavior can be predicted with functions extracted from a single oscillation pulse, which will relate the noise effects to the unperturbed amplitude and phase at the various oscillation stages. The complete investigation provides insight into the effect of nonlinearity and noise on the detected baseband signal and the estimated distance. It will be applied to an SRO at 2.7 GHz, which has been manufactured and measured.This work was supported by Spanish Ministry of Science and Innovation (MCIN/AEI/10.13039/501100011033) under Grant PID2020-116569RB-C31Institute of Electrical and Electronics Engineers Inc.Universidad de Cantabria20252025-01-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttps://hdl.handle.net/10902/35323IEEE Transactions on Microwave Theory and Techniques, 2025, 73(1), 45-58IEEE MTT-S International Microwave Symposium (IMS), Washington, DC, 2024reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/353232026-06-02T12:39:31Z
dc.title.none.fl_str_mv Analysis and modeling of super-regenerative oscillators with FSCW signals
title Analysis and modeling of super-regenerative oscillators with FSCW signals
spellingShingle Analysis and modeling of super-regenerative oscillators with FSCW signals
Sancho Lucio, Sergio Miguel|||0000-0003-3343-1053
Active transponder
Envelope transient
Superregenerative oscillator (SRO)
title_short Analysis and modeling of super-regenerative oscillators with FSCW signals
title_full Analysis and modeling of super-regenerative oscillators with FSCW signals
title_fullStr Analysis and modeling of super-regenerative oscillators with FSCW signals
title_full_unstemmed Analysis and modeling of super-regenerative oscillators with FSCW signals
title_sort Analysis and modeling of super-regenerative oscillators with FSCW signals
dc.creator.none.fl_str_mv Sancho Lucio, Sergio Miguel|||0000-0003-3343-1053
Pontón Lobete, María Isabel|||0000-0001-8537-1502
Suárez Rodríguez, Almudena|||0000-0002-5266-5544
author Sancho Lucio, Sergio Miguel|||0000-0003-3343-1053
author_facet Sancho Lucio, Sergio Miguel|||0000-0003-3343-1053
Pontón Lobete, María Isabel|||0000-0001-8537-1502
Suárez Rodríguez, Almudena|||0000-0002-5266-5544
author_role author
author2 Pontón Lobete, María Isabel|||0000-0001-8537-1502
Suárez Rodríguez, Almudena|||0000-0002-5266-5544
author2_role author
author
dc.contributor.none.fl_str_mv Universidad de Cantabria
dc.subject.none.fl_str_mv Active transponder
Envelope transient
Superregenerative oscillator (SRO)
topic Active transponder
Envelope transient
Superregenerative oscillator (SRO)
description Active transponders based on super-regenerative oscillators (SROs) have the advantages of a high gain, low consumption, and a compact implementation. They rely on a switched oscillator excited by a low amplitude frequency modulated continuous-wave (FMCW) signal, which provides an approximately phase-coherent response. Due to the complexity of their operation mode, involving the start-up transient and a time-varying phase shift, their realistic modeling is demanding. Here, we present an in-depth semianalytical investigation of an SRO transponder excited by a frequency-stepped signal, which includes, for the first time to our knowledge, a thorough analysis of the noise perturbations. The SRO is analyzed with a 2-D envelope-domain formulation, derived from a current function extracted from harmonic balance. As will be shown, the SRO response to the incoming signal can be predicted with two nonlinear functions, corresponding to the amplitude and phase, obtained in a single oscillation interval. We will derive an Ornstein?Uhlenbeck system from which the variance of the SRO amplitude and phase will be determined through a detailed analytical approach. Like the SRO response, the noise behavior can be predicted with functions extracted from a single oscillation pulse, which will relate the noise effects to the unperturbed amplitude and phase at the various oscillation stages. The complete investigation provides insight into the effect of nonlinearity and noise on the detected baseband signal and the estimated distance. It will be applied to an SRO at 2.7 GHz, which has been manufactured and measured.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10902/35323
url https://hdl.handle.net/10902/35323
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Institute of Electrical and Electronics Engineers Inc.
publisher.none.fl_str_mv Institute of Electrical and Electronics Engineers Inc.
dc.source.none.fl_str_mv IEEE Transactions on Microwave Theory and Techniques, 2025, 73(1), 45-58
IEEE MTT-S International Microwave Symposium (IMS), Washington, DC, 2024
reponame:UCrea Repositorio Abierto de la Universidad de Cantabria
instname:Universidad de Cantabria (UC)
instname_str Universidad de Cantabria (UC)
reponame_str UCrea Repositorio Abierto de la Universidad de Cantabria
collection UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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