Rigorous design of compact high-performance 3-D microstrip filters using inverse scattering

In this letter, a novel design method for 3-D microstrip filters is proposed. The method is valid for any all-pole transfer function and employs an inverse scattering synthesis technique to generate a smooth characteristic impedance profile that is implemented by smoothly varying the substrate heigh...

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Autores: Pons Abenza, Alejandro, Ahmad, Jamil, Périgaud, Aurélien, Arregui Padilla, Iván, Álvarez Botero, Germán Andrés, Martín Iglesias, Petronilo, Lopetegui Beregaña, José María, Delhote, Nicolas, Gómez Laso, Miguel Ángel
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Universidad Pública de Navarra
Repositorio:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/56006
Acceso en línea:https://hdl.handle.net/2454/56006
Access Level:acceso abierto
Palabra clave:Additive manufacturing (AM)
Filter synthesis
Inverse scattering
Microstrip technology
Microwave filter
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spelling Rigorous design of compact high-performance 3-D microstrip filters using inverse scatteringPons Abenza, AlejandroAhmad, JamilPérigaud, AurélienArregui Padilla, IvánÁlvarez Botero, Germán AndrésMartín Iglesias, PetroniloLopetegui Beregaña, José MaríaDelhote, NicolasGómez Laso, Miguel ÁngelAdditive manufacturing (AM)Filter synthesisInverse scatteringMicrostrip technologyMicrowave filterIn this letter, a novel design method for 3-D microstrip filters is proposed. The method is valid for any all-pole transfer function and employs an inverse scattering synthesis technique to generate a smooth characteristic impedance profile that is implemented by smoothly varying the substrate height and strip width. In this way, strongly enhanced characteristic impedance excursions can be implemented, allowing us to synthesize filters with very wide rejection bands and very compact physical dimensions. As an example of application, a Ku-band low-pass filter (LPF) with cut-off frequency of 11.8 GHz and rejection band up to 36 GHz is designed, featuring a length of 10.66 mm. The filter is fabricated through additive manufacturing (AM) and the measurements obtained confirm its excellent performance.This work was supported by Spanish Ministerio de Ciencia e Innovacion-Agencia Estatal de Investigación (MCIN /AEI/10.13039/501100011033) under Project PID2020-112545RB-C53. Open access funding provided by Universidad Publica de Navarra.IEEEIngeniería Eléctrica, Electrónica y de ComunicaciónIngeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio IngeniaritzaInstitute of Smart Cities - ISCUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoa2025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2454/56006reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112545RB-C53© 2025 The Authors. This work is licensed under a Creative Commons Attribution 4.0 License.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/560062026-06-17T12:41:47Z
dc.title.none.fl_str_mv Rigorous design of compact high-performance 3-D microstrip filters using inverse scattering
title Rigorous design of compact high-performance 3-D microstrip filters using inverse scattering
spellingShingle Rigorous design of compact high-performance 3-D microstrip filters using inverse scattering
Pons Abenza, Alejandro
Additive manufacturing (AM)
Filter synthesis
Inverse scattering
Microstrip technology
Microwave filter
title_short Rigorous design of compact high-performance 3-D microstrip filters using inverse scattering
title_full Rigorous design of compact high-performance 3-D microstrip filters using inverse scattering
title_fullStr Rigorous design of compact high-performance 3-D microstrip filters using inverse scattering
title_full_unstemmed Rigorous design of compact high-performance 3-D microstrip filters using inverse scattering
title_sort Rigorous design of compact high-performance 3-D microstrip filters using inverse scattering
dc.creator.none.fl_str_mv Pons Abenza, Alejandro
Ahmad, Jamil
Périgaud, Aurélien
Arregui Padilla, Iván
Álvarez Botero, Germán Andrés
Martín Iglesias, Petronilo
Lopetegui Beregaña, José María
Delhote, Nicolas
Gómez Laso, Miguel Ángel
author Pons Abenza, Alejandro
author_facet Pons Abenza, Alejandro
Ahmad, Jamil
Périgaud, Aurélien
Arregui Padilla, Iván
Álvarez Botero, Germán Andrés
Martín Iglesias, Petronilo
Lopetegui Beregaña, José María
Delhote, Nicolas
Gómez Laso, Miguel Ángel
author_role author
author2 Ahmad, Jamil
Périgaud, Aurélien
Arregui Padilla, Iván
Álvarez Botero, Germán Andrés
Martín Iglesias, Petronilo
Lopetegui Beregaña, José María
Delhote, Nicolas
Gómez Laso, Miguel Ángel
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ingeniería Eléctrica, Electrónica y de Comunicación
Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza
Institute of Smart Cities - ISC
Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
dc.subject.none.fl_str_mv Additive manufacturing (AM)
Filter synthesis
Inverse scattering
Microstrip technology
Microwave filter
topic Additive manufacturing (AM)
Filter synthesis
Inverse scattering
Microstrip technology
Microwave filter
description In this letter, a novel design method for 3-D microstrip filters is proposed. The method is valid for any all-pole transfer function and employs an inverse scattering synthesis technique to generate a smooth characteristic impedance profile that is implemented by smoothly varying the substrate height and strip width. In this way, strongly enhanced characteristic impedance excursions can be implemented, allowing us to synthesize filters with very wide rejection bands and very compact physical dimensions. As an example of application, a Ku-band low-pass filter (LPF) with cut-off frequency of 11.8 GHz and rejection band up to 36 GHz is designed, featuring a length of 10.66 mm. The filter is fabricated through additive manufacturing (AM) and the measurements obtained confirm its excellent performance.
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2454/56006
url https://hdl.handle.net/2454/56006
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112545RB-C53
dc.rights.none.fl_str_mv © 2025 The Authors. This work is licensed under a Creative Commons Attribution 4.0 License.
https://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © 2025 The Authors. This work is licensed under a Creative Commons Attribution 4.0 License.
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IEEE
publisher.none.fl_str_mv IEEE
dc.source.none.fl_str_mv reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
instname:Universidad Pública de Navarra
instname_str Universidad Pública de Navarra
reponame_str Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
repository.name.fl_str_mv
repository.mail.fl_str_mv
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