Optimization of chirped and tapered microstrip koch fractal electromagnetic band gap (KFEBG) structures for improved low-pass filter design

This study presents electromagnetic bandgap (EBG) structures in microstrip technology based on onedimensional Koch fractal patterns (Koch fractal EBG (KFEBG)). This fractal geometry allows to adjust the radius r and distance a between patterns so that a low-pass filter response is obtained when the...

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Autores: Ruiz Martínez, Juan de Dios, Martínez Viviente, Felix Lorenzo, Hinojosa Jiménez, Juan
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Institución:Universidad Politécnica de Cartagena(UPCT)
Repositorio:Repositorio Digital UPCT
OAI Identifier:oai:repositorio.upct.es:10317/5402
Acceso en línea:http://hdl.handle.net/10317/5402
Access Level:acceso abierto
Palabra clave:Electromagnetic bandgap (EBG)
Koch fractal EBG (KFEBG)
2202 Electromagnetismo
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spelling Optimization of chirped and tapered microstrip koch fractal electromagnetic band gap (KFEBG) structures for improved low-pass filter designRuiz Martínez, Juan de DiosMartínez Viviente, Felix LorenzoHinojosa Jiménez, JuanElectromagnetic bandgap (EBG)Koch fractal EBG (KFEBG)2202 ElectromagnetismoThis study presents electromagnetic bandgap (EBG) structures in microstrip technology based on onedimensional Koch fractal patterns (Koch fractal EBG (KFEBG)). This fractal geometry allows to adjust the radius r and distance a between patterns so that a low-pass filter response is obtained when the ratio r/a is higher than 0.5. However, in such case undesired strong ripples appear in the low bandpass region. We demonstrate that the performance in the passband of this filter can be improved by applying a tapering function to the Koch fractal dimensions and to the width of the microstrip line, while simultaneously chirping (modulating) the Koch fractal periodic pattern distance (a) so as to maintain a constant r/a ratio. Several tapering functions scaled by a factor K are presented, and the results of their application to the KFEBG microstrip structure are compared by means of relevant characteristic parameters. Optimal performance has been obtained for the Kaiser and Cauchy distributions applied to the Koch fractal pattern, combined with a rectangular and Cauchy distribution applied to the microstrip width, respectively.This work was supported by the Ministerio de Economía y Competitividad of Spain and the European Regional Development Funds (TEC2013-47037-C5-5-R).Institutiom of Engineering and Technology (IET)201620162015info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/10317/5402reponame:Repositorio Digital UPCTinstname:Universidad Politécnica de Cartagena(UPCT)Ingléshttp://hdl.handle.net/10317/6392Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:repositorio.upct.es:10317/54022026-05-15T06:39:02Z
dc.title.none.fl_str_mv Optimization of chirped and tapered microstrip koch fractal electromagnetic band gap (KFEBG) structures for improved low-pass filter design
title Optimization of chirped and tapered microstrip koch fractal electromagnetic band gap (KFEBG) structures for improved low-pass filter design
spellingShingle Optimization of chirped and tapered microstrip koch fractal electromagnetic band gap (KFEBG) structures for improved low-pass filter design
Ruiz Martínez, Juan de Dios
Electromagnetic bandgap (EBG)
Koch fractal EBG (KFEBG)
2202 Electromagnetismo
title_short Optimization of chirped and tapered microstrip koch fractal electromagnetic band gap (KFEBG) structures for improved low-pass filter design
title_full Optimization of chirped and tapered microstrip koch fractal electromagnetic band gap (KFEBG) structures for improved low-pass filter design
title_fullStr Optimization of chirped and tapered microstrip koch fractal electromagnetic band gap (KFEBG) structures for improved low-pass filter design
title_full_unstemmed Optimization of chirped and tapered microstrip koch fractal electromagnetic band gap (KFEBG) structures for improved low-pass filter design
title_sort Optimization of chirped and tapered microstrip koch fractal electromagnetic band gap (KFEBG) structures for improved low-pass filter design
dc.creator.none.fl_str_mv Ruiz Martínez, Juan de Dios
Martínez Viviente, Felix Lorenzo
Hinojosa Jiménez, Juan
author Ruiz Martínez, Juan de Dios
author_facet Ruiz Martínez, Juan de Dios
Martínez Viviente, Felix Lorenzo
Hinojosa Jiménez, Juan
author_role author
author2 Martínez Viviente, Felix Lorenzo
Hinojosa Jiménez, Juan
author2_role author
author
dc.subject.none.fl_str_mv Electromagnetic bandgap (EBG)
Koch fractal EBG (KFEBG)
2202 Electromagnetismo
topic Electromagnetic bandgap (EBG)
Koch fractal EBG (KFEBG)
2202 Electromagnetismo
description This study presents electromagnetic bandgap (EBG) structures in microstrip technology based on onedimensional Koch fractal patterns (Koch fractal EBG (KFEBG)). This fractal geometry allows to adjust the radius r and distance a between patterns so that a low-pass filter response is obtained when the ratio r/a is higher than 0.5. However, in such case undesired strong ripples appear in the low bandpass region. We demonstrate that the performance in the passband of this filter can be improved by applying a tapering function to the Koch fractal dimensions and to the width of the microstrip line, while simultaneously chirping (modulating) the Koch fractal periodic pattern distance (a) so as to maintain a constant r/a ratio. Several tapering functions scaled by a factor K are presented, and the results of their application to the KFEBG microstrip structure are compared by means of relevant characteristic parameters. Optimal performance has been obtained for the Kaiser and Cauchy distributions applied to the Koch fractal pattern, combined with a rectangular and Cauchy distribution applied to the microstrip width, respectively.
publishDate 2015
dc.date.none.fl_str_mv 2015
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10317/5402
url http://hdl.handle.net/10317/5402
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://hdl.handle.net/10317/6392
dc.rights.none.fl_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Institutiom of Engineering and Technology (IET)
publisher.none.fl_str_mv Institutiom of Engineering and Technology (IET)
dc.source.none.fl_str_mv reponame:Repositorio Digital UPCT
instname:Universidad Politécnica de Cartagena(UPCT)
instname_str Universidad Politécnica de Cartagena(UPCT)
reponame_str Repositorio Digital UPCT
collection Repositorio Digital UPCT
repository.name.fl_str_mv
repository.mail.fl_str_mv
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