Oscillators based on step-impedance and slow wave transmission lines for sensing applications

This work investigates the capabilities of oscillators based on step-impedance and slow wave structures to sense dielectric constants. The material under test (MUT) is placed over the structure and the objective is to achieve a high sensitivity of the oscillation frequency with the advantage of low...

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Autores: Pontón Lobete, María Isabel|||0000-0001-8537-1502, Sancho Lucio, Sergio Miguel|||0000-0003-3343-1053, Herrera Guardado, Amparo|||0000-0001-5963-6968, Suárez Rodríguez, Almudena|||0000-0002-5266-5544
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/28221
Acceso en línea:https://hdl.handle.net/10902/28221
Access Level:acceso abierto
Palabra clave:Slow-wave structure
Oscillator
Bifurcation
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spelling Oscillators based on step-impedance and slow wave transmission lines for sensing applicationsPontón Lobete, María Isabel|||0000-0001-8537-1502Sancho Lucio, Sergio Miguel|||0000-0003-3343-1053Herrera Guardado, Amparo|||0000-0001-5963-6968Suárez Rodríguez, Almudena|||0000-0002-5266-5544Slow-wave structureOscillatorBifurcationThis work investigates the capabilities of oscillators based on step-impedance and slow wave structures to sense dielectric constants. The material under test (MUT) is placed over the structure and the objective is to achieve a high sensitivity of the oscillation frequency with the advantage of low phase noise, enabled by the high quality factor of the structure. With the aid of simplified analytical models, we will initially study the variation of the resonance frequency of a istep-impedance transmission line with the dielectric constant of the MUT, paying attention to the influence of the number of line sections. The study includes the derivation of analytical expressions for the sensitivity of the resonance frequency. Next, the structure will be connected to the oscillator active core, which will be modeled with a numerical nonlinear admittance function extracted from harmonic-balance (HB) simulations. The resulting semianalytical formulation will provide insight into the variation of the oscillation frequency and amplitude with the dielectric constant of the MUT, as well as the variation of the phase-noise spectral density. It will also enable a versatile test and optimization of the various structures to achieve high sensitivity with low phase noise. The methods have been successfully applied to an field-effect transistor (FET)-based oscillator at about 2 GHz.This work was supported by the Spanish Ministry of Science and Innovation (MCIN/ AEI/10.13039/501100011033) under grant PID2020-116569RB-C31.Institute of Electrical and Electronics Engineers Inc.Universidad de Cantabria20232023-01-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttps://hdl.handle.net/10902/28221IEEE Transactions on Microwave Theory and Techniques, 2023, 71(1), 203-217IEEE MTT-S International Microwave Symposium (IMS), Denver, Colorado, USA, 2022reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/282212026-06-02T12:39:31Z
dc.title.none.fl_str_mv Oscillators based on step-impedance and slow wave transmission lines for sensing applications
title Oscillators based on step-impedance and slow wave transmission lines for sensing applications
spellingShingle Oscillators based on step-impedance and slow wave transmission lines for sensing applications
Pontón Lobete, María Isabel|||0000-0001-8537-1502
Slow-wave structure
Oscillator
Bifurcation
title_short Oscillators based on step-impedance and slow wave transmission lines for sensing applications
title_full Oscillators based on step-impedance and slow wave transmission lines for sensing applications
title_fullStr Oscillators based on step-impedance and slow wave transmission lines for sensing applications
title_full_unstemmed Oscillators based on step-impedance and slow wave transmission lines for sensing applications
title_sort Oscillators based on step-impedance and slow wave transmission lines for sensing applications
dc.creator.none.fl_str_mv Pontón Lobete, María Isabel|||0000-0001-8537-1502
Sancho Lucio, Sergio Miguel|||0000-0003-3343-1053
Herrera Guardado, Amparo|||0000-0001-5963-6968
Suárez Rodríguez, Almudena|||0000-0002-5266-5544
author Pontón Lobete, María Isabel|||0000-0001-8537-1502
author_facet Pontón Lobete, María Isabel|||0000-0001-8537-1502
Sancho Lucio, Sergio Miguel|||0000-0003-3343-1053
Herrera Guardado, Amparo|||0000-0001-5963-6968
Suárez Rodríguez, Almudena|||0000-0002-5266-5544
author_role author
author2 Sancho Lucio, Sergio Miguel|||0000-0003-3343-1053
Herrera Guardado, Amparo|||0000-0001-5963-6968
Suárez Rodríguez, Almudena|||0000-0002-5266-5544
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad de Cantabria
dc.subject.none.fl_str_mv Slow-wave structure
Oscillator
Bifurcation
topic Slow-wave structure
Oscillator
Bifurcation
description This work investigates the capabilities of oscillators based on step-impedance and slow wave structures to sense dielectric constants. The material under test (MUT) is placed over the structure and the objective is to achieve a high sensitivity of the oscillation frequency with the advantage of low phase noise, enabled by the high quality factor of the structure. With the aid of simplified analytical models, we will initially study the variation of the resonance frequency of a istep-impedance transmission line with the dielectric constant of the MUT, paying attention to the influence of the number of line sections. The study includes the derivation of analytical expressions for the sensitivity of the resonance frequency. Next, the structure will be connected to the oscillator active core, which will be modeled with a numerical nonlinear admittance function extracted from harmonic-balance (HB) simulations. The resulting semianalytical formulation will provide insight into the variation of the oscillation frequency and amplitude with the dielectric constant of the MUT, as well as the variation of the phase-noise spectral density. It will also enable a versatile test and optimization of the various structures to achieve high sensitivity with low phase noise. The methods have been successfully applied to an field-effect transistor (FET)-based oscillator at about 2 GHz.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-01-01
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/10902/28221
url https://hdl.handle.net/10902/28221
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
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
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, 2023, 71(1), 203-217
IEEE MTT-S International Microwave Symposium (IMS), Denver, Colorado, USA, 2022
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
_version_ 1869407513587220480
score 15,301603

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