Filtro de Micro-ondas Passa-Baixas de Nona Ordem e Alta Rejeição à Harmônicos usando o Modelo Pseudo-Elíptico

Detalhes bibliográficos
Autor(a) principal: Silva, Denis Carlos da, 1993-
Data de Publicação: 2024
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da Universidade Estadual de Campinas (UNICAMP)
Texto Completo: https://hdl.handle.net/20.500.12733/22073
Resumo: Orientador: Leandro Tiago Manêra
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spelling Filtro de Micro-ondas Passa-Baixas de Nona Ordem e Alta Rejeição à Harmônicos usando o Modelo Pseudo-ElípticoLow loss and high-performance pseudo-elliptic low pass filter using a suspended stripline structureFiltro passa-baixaMicro-ondasLow pass filterMicrowaveOrientador: Leandro Tiago ManêraDissertação (mestrado) - Universidade Estadual de Campinas (UNICAMP), Faculdade de Engenharia Elétrica e de ComputaçãoResumo: This work presents a complete development cycle of a ninth-order low-pass filter for the microwave range. The process involves the methodology, synthesis, electromagnetic simulation, prototyping, and testing of the proposed filter. The prototype is designed to operate in the frequency range from DC to 2.5 GHz, using transmission line models in suspended substrate and microstrip, employing Rogers Duroid TM 5880 laminate, with ?r of 2.2 and a thickness of 0.127 mm. Additionally, the pseudo-elliptical synthesis technique with three transmission zeros is applied. Microwave low-pass filters with high selectivity and harmonic rejection are essential in military applications to suppress spurious signals and prevent electromagnetic interference. Designing and prototyping these filters, aiming to achieve rejection levels above 60 dB, pose a significant challenge in the microwave range. The developed filter has a passband from DC to 2.5 GHz, with low insertion loss below 0.35 dB and high rejection capability. It achieves a rejection level greater than 50 dB in the range from 3.1 GHz to 8.9 GHz, with results exceeding 60 dB from 3.3 GHz to 6.8 GHz. Compared to similar filters and even state-of-the-art wideband rejection filters, this filter demonstrates a better trade-off among requirements such as low insertion loss, high roll-off rate in the stopband, and high rejection levels. These results highlight the relevance and potential impact of our work in the field of microwave filters. The work also provides a detailed description of the design and simulation methodology of microwave filters, covering everything from the synthesis of the mathematical model, circuit and 3D electromagnetic simulation stages, to the sensitivity analysis of variables and the challenges faced during prototyping. In the microwave implementation, the step impedance technique is used, with suspended striplines for high-impedance lines and microstrip for low-impedance lines. The quality of the grounding is directly related to the rejection band of these filters. Therefore, this study incorporates ground planes to analyze the sensitivity in the transition from suspended stripline to microstrip. Additionally, the observed transmission zeros align with the values predicted by simulations. The return loss, crucial for system effectiveness, is greater than 17.5 dB in the passband. Furthermore, no resonant frequencies were identified in the stopband, highlighting the robustness and reliability of the developed prototypeAbstract: This work presents a complete development cycle of a ninth-order low-pass filter for the microwave range. The process involves the methodology, synthesis, electromagnetic simulation, prototyping, and testing of the proposed filter. The prototype is designed to operate in the frequency range from DC to 2.5 GHz, using transmission line models in suspended substrate and microstrip, employing Rogers Duroid TM 5880 laminate, with ?r of 2.2 and a thickness of 0.127 mm. Additionally, the pseudo-elliptical synthesis technique with three transmission zeros is applied. Microwave low-pass filters with high selectivity and harmonic rejection are essential in military applications to suppress spurious signals and prevent electromagnetic interference. Designing and prototyping these filters, aiming to achieve rejection levels above 60 dB, pose a significant challenge in the microwave range. The developed filter has a passband from DC to 2.5 GHz, with low insertion loss below 0.35 dB and high rejection capability. It achieves a rejection level greater than 50 dB in the range from 3.1 GHz to 8.9 GHz, with results exceeding 60 dB from 3.3 GHz to 6.8 GHz. Compared to similar filters and even state-of-the-art wideband rejection filters, this filter demonstrates a better trade-off among requirements such as low insertion loss, high roll-off rate in the stopband, and high rejection levels. These results highlight the relevance and potential impact of our work in the field of microwave filters. The work also provides a detailed description of the design and simulation methodology of microwave filters, covering everything from the synthesis of the mathematical model, circuit and 3D electromagnetic simulation stages, to the sensitivity analysis of variables and the challenges faced during prototyping. In the microwave implementation, the step impedance technique is used, with suspended striplines for high-impedance lines and microstrip for low-impedance lines. The quality of the grounding is directly related to the rejection band of these filters. Therefore, this study incorporates ground planes to analyze the sensitivity in the transition from suspended stripline to microstrip. Additionally, the observed transmission zeros align with the values predicted by simulations. The return loss, crucial for system effectiveness, is greater than 17.5 dB in the passband. Furthermore, no resonant frequencies were identified in the stopband, highlighting the robustness and reliability of the developed prototypeAbertoMestradoTelecomunicações e TelemáticaMestre em Engenharia Elétrica[s.n.]Manêra, Leandro Tiago, 1977-Campos, Marcel VelosoDiniz, José AlexandreUniversidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Elétrica e de ComputaçãoPrograma de Pós-Graduação em Engenharia ElétricaUNIVERSIDADE ESTADUAL DE CAMPINASSilva, Denis Carlos da, 1993-20242024-05-10T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdf1 recurso online (94 p.) : il., digital, arquivo PDF.https://hdl.handle.net/20.500.12733/22073SILVA, Denis Carlos da. Filtro de Micro-ondas Passa-Baixas de Nona Ordem e Alta Rejeição à Harmônicos usando o Modelo Pseudo-Elíptico. 2024. 1 recurso online (94 p.) Dissertação (mestrado) - Universidade Estadual de Campinas (UNICAMP), Faculdade de Engenharia Elétrica e de Computação, Campinas, SP. Disponível em: 20.500.12733/22073. Acesso em: 29 set. 2025.https://repositorio.unicamp.br/acervo/detalhe/1403640https://repositorio.unicamp.br/acervo/detalhe/1403640Cover: https://repositorio.unicamp.br/capa/capa?codigo=1403640Requisitos do sistema: Software para leitura de arquivo em PDFporreponame:Biblioteca Digital de Teses e Dissertações da Universidade Estadual de Campinas (UNICAMP)instname:Universidade Estadual de Campinas (UNICAMP)instacron:UNICAMPinfo:eu-repo/semantics/openAccess2025-07-17T15:42:00Zoai::1403640Biblioteca Digital de Teses e DissertaçõesPUBhttp://repositorio.unicamp.br/oai/tese/oai.aspsbubd@unicamp.bropendoar:2025-07-17T15:42Biblioteca Digital de Teses e Dissertações da Universidade Estadual de Campinas (UNICAMP) - Universidade Estadual de Campinas (UNICAMP)false
dc.title.none.fl_str_mv Filtro de Micro-ondas Passa-Baixas de Nona Ordem e Alta Rejeição à Harmônicos usando o Modelo Pseudo-Elíptico
Low loss and high-performance pseudo-elliptic low pass filter using a suspended stripline structure
title Filtro de Micro-ondas Passa-Baixas de Nona Ordem e Alta Rejeição à Harmônicos usando o Modelo Pseudo-Elíptico
spellingShingle Filtro de Micro-ondas Passa-Baixas de Nona Ordem e Alta Rejeição à Harmônicos usando o Modelo Pseudo-Elíptico
Silva, Denis Carlos da, 1993-
Filtro passa-baixa
Micro-ondas
Low pass filter
Microwave
title_short Filtro de Micro-ondas Passa-Baixas de Nona Ordem e Alta Rejeição à Harmônicos usando o Modelo Pseudo-Elíptico
title_full Filtro de Micro-ondas Passa-Baixas de Nona Ordem e Alta Rejeição à Harmônicos usando o Modelo Pseudo-Elíptico
title_fullStr Filtro de Micro-ondas Passa-Baixas de Nona Ordem e Alta Rejeição à Harmônicos usando o Modelo Pseudo-Elíptico
title_full_unstemmed Filtro de Micro-ondas Passa-Baixas de Nona Ordem e Alta Rejeição à Harmônicos usando o Modelo Pseudo-Elíptico
title_sort Filtro de Micro-ondas Passa-Baixas de Nona Ordem e Alta Rejeição à Harmônicos usando o Modelo Pseudo-Elíptico
author Silva, Denis Carlos da, 1993-
author_facet Silva, Denis Carlos da, 1993-
author_role author
dc.contributor.none.fl_str_mv Manêra, Leandro Tiago, 1977-
Campos, Marcel Veloso
Diniz, José Alexandre
Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Elétrica e de Computação
Programa de Pós-Graduação em Engenharia Elétrica
UNIVERSIDADE ESTADUAL DE CAMPINAS
dc.contributor.author.fl_str_mv Silva, Denis Carlos da, 1993-
dc.subject.por.fl_str_mv Filtro passa-baixa
Micro-ondas
Low pass filter
Microwave
topic Filtro passa-baixa
Micro-ondas
Low pass filter
Microwave
description Orientador: Leandro Tiago Manêra
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-05-10T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://hdl.handle.net/20.500.12733/22073
SILVA, Denis Carlos da. Filtro de Micro-ondas Passa-Baixas de Nona Ordem e Alta Rejeição à Harmônicos usando o Modelo Pseudo-Elíptico. 2024. 1 recurso online (94 p.) Dissertação (mestrado) - Universidade Estadual de Campinas (UNICAMP), Faculdade de Engenharia Elétrica e de Computação, Campinas, SP. Disponível em: 20.500.12733/22073. Acesso em: 29 set. 2025.
url https://hdl.handle.net/20.500.12733/22073
identifier_str_mv SILVA, Denis Carlos da. Filtro de Micro-ondas Passa-Baixas de Nona Ordem e Alta Rejeição à Harmônicos usando o Modelo Pseudo-Elíptico. 2024. 1 recurso online (94 p.) Dissertação (mestrado) - Universidade Estadual de Campinas (UNICAMP), Faculdade de Engenharia Elétrica e de Computação, Campinas, SP. Disponível em: 20.500.12733/22073. Acesso em: 29 set. 2025.
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://repositorio.unicamp.br/acervo/detalhe/1403640
https://repositorio.unicamp.br/acervo/detalhe/1403640
Cover: https://repositorio.unicamp.br/capa/capa?codigo=1403640
Requisitos do sistema: Software para leitura de arquivo em PDF
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
1 recurso online (94 p.) : il., digital, arquivo PDF.
dc.publisher.none.fl_str_mv [s.n.]
publisher.none.fl_str_mv [s.n.]
dc.source.none.fl_str_mv reponame:Biblioteca Digital de Teses e Dissertações da Universidade Estadual de Campinas (UNICAMP)
instname:Universidade Estadual de Campinas (UNICAMP)
instacron:UNICAMP
instname_str Universidade Estadual de Campinas (UNICAMP)
instacron_str UNICAMP
institution UNICAMP
reponame_str Biblioteca Digital de Teses e Dissertações da Universidade Estadual de Campinas (UNICAMP)
collection Biblioteca Digital de Teses e Dissertações da Universidade Estadual de Campinas (UNICAMP)
repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações da Universidade Estadual de Campinas (UNICAMP) - Universidade Estadual de Campinas (UNICAMP)
repository.mail.fl_str_mv sbubd@unicamp.br
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