Sistema de balanceamento e casamento de imped?ncias para irradiadores de faixa ultra larga

Detalhes bibliográficos
Autor(a) principal: Carvalho, Luzia Natacha Filipe Paim de
Data de Publicação: 2017
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da INATEL
Texto Completo: http://tede.inatel.br:8080/tede/handle/tede/165
Resumo: This work presents the construction and evaluation of an excitation system of an equiangular spiral antenna for wide band operation. Antenna analyzes show the potential to operate at large bandwidths with moderate variation in their characteristics, as impedance and gain. However, the same analyzes conclude that is necessary to design and model a structure that provides it is properly excitation allowing the system to extract these advantages. The study of the Tschebyscheff polynomials for the impedance matching and obtaining the smallest reflection coefficient, method applied in balun design. It was based on the idea of using a microstrip line and deduced the equations from the model of its ground plane to reach the most suitable impedance matching structure. Several simulations of the antenna and balun were made in the software Comsol Multiphysics?. The results of input impedance and reflection coefficient showed that the antenna shape, along with the balance of the currents at the feed point, provides the characteristics required for operation over a wide frequency range.
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spelling Mej?a, Felipe Beltr?n235.092.198-05http://lattes.cnpq.br/8371603251897972Mej?a, Felipe Beltr?n235.092.198-05http://lattes.cnpq.br/8371603251897972Ribeiro, Jos? Ant?nio Justino012.620.256-72http://lattes.cnpq.br/9987344139958522Spadoti, Danilo Henriquehttp://lattes.cnpq.br/8760117075106351022.809.336-83Carvalho, Luzia Natacha Filipe Paim de2018-03-20T17:48:19Z2017-12-07Carvalho, Luzia Natacha Filipe Paim de. Sistema de balanceamento e casamento de imped?ncias para irradiadores de faixa ultra larga. 2017. [61]. disserta??o( Mestrado em Engenharia de Telecomunica??es) - Instituto Nacional de Telecomunica??es, [Santa Rita do Sapucai] .http://tede.inatel.br:8080/tede/handle/tede/165This work presents the construction and evaluation of an excitation system of an equiangular spiral antenna for wide band operation. Antenna analyzes show the potential to operate at large bandwidths with moderate variation in their characteristics, as impedance and gain. However, the same analyzes conclude that is necessary to design and model a structure that provides it is properly excitation allowing the system to extract these advantages. The study of the Tschebyscheff polynomials for the impedance matching and obtaining the smallest reflection coefficient, method applied in balun design. It was based on the idea of using a microstrip line and deduced the equations from the model of its ground plane to reach the most suitable impedance matching structure. Several simulations of the antenna and balun were made in the software Comsol Multiphysics?. The results of input impedance and reflection coefficient showed that the antenna shape, along with the balance of the currents at the feed point, provides the characteristics required for operation over a wide frequency range.Este trabalho apresenta a constru??o e avalia??o de um sistema de excita??o de uma antena espiral equiangular para opera??o em faixa larga. An?lises da antena mostram o potencial para operar em grandes larguras de faixa com moderada varia??o em suas caracter?sticas como imped?ncia e ganho. Contudo, as mesmas an?lises concluem que para tanto, fica necess?rio a concep??o e modelamento de uma estrutura que promova sua excita??o de forma adequada de modo a extrair estas vantagens. O estudo dos polin?mios de Tschebyscheff para o casamento de imped?ncias e obten??o do menor coeficiente de reflex?o, m?todo aplicado no projeto do balun. Partiu-se da ideia do emprego de uma linha de microfita e foram deduzidas as equa??es para a modelagem do seu plano terra para se chegar ao transformador mais adequado. Realizaram-se v?rias simula??es com antena e balun no programa Comsol Multiphysics?. Os resultados da imped?ncia de entrada e do coeficiente de reflex?o mostraram que o formato da antena, juntamente com o balanceamento das correntes no ponto de alimenta??o, concorda com as caracter?sticas necess?rias para uma opera??o em uma grande faixa de frequ?ncia.Submitted by Tede Dspace (tede@inatel.br) on 2018-03-20T17:48:19Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Disserta??o Luzia Carvalho - ok.pdf: 2016023 bytes, checksum: 0bc277fa62f6add6e6881850cca9c20b (MD5)Made available in DSpace on 2018-03-20T17:48:19Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Disserta??o Luzia Carvalho - ok.pdf: 2016023 bytes, checksum: 0bc277fa62f6add6e6881850cca9c20b (MD5) Previous issue date: 2017-12-07application/pdfhttp://tede.inatel.br:8080/jspui/retrieve/1353/Disserta%c3%a7%c3%a3o%20Luzia%20Carvalho%20-%20ok.pdf.jpgporInstituto Nacional de Telecomunica??esMestrado em Engenharia de Telecomunica??esINATELBrasilInstituto Nacional de Telecomunica??eshttp://creativecommons.org/licenses/by-nd/4.0/info:eu-repo/semantics/openAccessAntena espiral equiangular;balun;casamento de imped?ncias;coeficiente de reflex?o;largura de faixabalun;bandwidth;equiangular spiral antenna;impedance matching;reflection coefficient.Engenharia - Telecomunica??esSistema de balanceamento e casamento de imped?ncias para irradiadores de faixa ultra largainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisreponame:Biblioteca Digital de Teses e Dissertações da INATELinstname:Instituto Nacional de Telecomunicações (INATEL)instacron:INATELLICENSElicense.txtlicense.txttext/plain; charset=utf-8112http://localhost:8080/tede/bitstream/tede/165/1/license.txtc6279291b293f0db82678eaa73a27769MD51CC-LICENSElicense_urllicense_urltext/plain; charset=utf-846http://localhost:8080/tede/bitstream/tede/165/2/license_url587cd8ffae15c8598ed3c46d248a3f38MD52license_textlicense_texttext/html; charset=utf-80http://localhost:8080/tede/bitstream/tede/165/3/license_textd41d8cd98f00b204e9800998ecf8427eMD53license_rdflicense_rdfapplication/rdf+xml; charset=utf-80http://localhost:8080/tede/bitstream/tede/165/4/license_rdfd41d8cd98f00b204e9800998ecf8427eMD54ORIGINALDisserta??o Luzia Carvalho - ok.pdfDisserta??o Luzia Carvalho - ok.pdfapplication/pdf2016023http://localhost:8080/tede/bitstream/tede/165/5/Disserta%C3%A7%C3%A3o+Luzia+Carvalho+-+ok.pdf0bc277fa62f6add6e6881850cca9c20bMD55TEXTDisserta??o Luzia Carvalho - ok.pdf.txtDisserta??o Luzia Carvalho - ok.pdf.txttext/plain122658http://localhost:8080/tede/bitstream/tede/165/6/Disserta%C3%A7%C3%A3o+Luzia+Carvalho+-+ok.pdf.txt9d12a1988657c00ab22af1fa3226708cMD56THUMBNAILDisserta??o Luzia Carvalho - ok.pdf.jpgDisserta??o Luzia Carvalho - ok.pdf.jpgimage/jpeg4016http://localhost:8080/tede/bitstream/tede/165/7/Disserta%C3%A7%C3%A3o+Luzia+Carvalho+-+ok.pdf.jpgcb2a9fed61b044b7d79e1e052dd66ddeMD57tede/1652018-11-05 12:35:08.13oai:localhost:tede/165QXV0b3Jpem8gYSBwdWJsaWNhPz9vIGRhIG1pbmhhIERpc3NlcnRhPz9vIGRlIE1lc3RyYWRvLCBlbSBmb3JtYXRvIFBERiwgY29tIGJsb3F1ZWlvIGRlIGVkaT8/bywgY29sYWdlbSBlIGM/cGlhLg==Biblioteca Digital de Teses e Dissertaçõeshttp://tede.inatel.br:8080/jspui/PUBhttp://tede.inatel.br:8080/oai/requestbiblioteca@inatel.br || biblioteca.atendimento@inatel.bropendoar:2018-11-05T14:35:08Biblioteca Digital de Teses e Dissertações da INATEL - Instituto Nacional de Telecomunicações (INATEL)false
dc.title.por.fl_str_mv Sistema de balanceamento e casamento de imped?ncias para irradiadores de faixa ultra larga
title Sistema de balanceamento e casamento de imped?ncias para irradiadores de faixa ultra larga
spellingShingle Sistema de balanceamento e casamento de imped?ncias para irradiadores de faixa ultra larga
Carvalho, Luzia Natacha Filipe Paim de
Antena espiral equiangular;balun;casamento de imped?ncias;coeficiente de reflex?o;largura de faixa
balun;bandwidth;equiangular spiral antenna;impedance matching;reflection coefficient.
Engenharia - Telecomunica??es
title_short Sistema de balanceamento e casamento de imped?ncias para irradiadores de faixa ultra larga
title_full Sistema de balanceamento e casamento de imped?ncias para irradiadores de faixa ultra larga
title_fullStr Sistema de balanceamento e casamento de imped?ncias para irradiadores de faixa ultra larga
title_full_unstemmed Sistema de balanceamento e casamento de imped?ncias para irradiadores de faixa ultra larga
title_sort Sistema de balanceamento e casamento de imped?ncias para irradiadores de faixa ultra larga
author Carvalho, Luzia Natacha Filipe Paim de
author_facet Carvalho, Luzia Natacha Filipe Paim de
author_role author
dc.contributor.advisor1.fl_str_mv Mej?a, Felipe Beltr?n
dc.contributor.advisor1ID.fl_str_mv 235.092.198-05
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/8371603251897972
dc.contributor.referee1.fl_str_mv Mej?a, Felipe Beltr?n
dc.contributor.referee1ID.fl_str_mv 235.092.198-05
dc.contributor.referee1Lattes.fl_str_mv http://lattes.cnpq.br/8371603251897972
dc.contributor.referee2.fl_str_mv Ribeiro, Jos? Ant?nio Justino
dc.contributor.referee2ID.fl_str_mv 012.620.256-72
dc.contributor.referee2Lattes.fl_str_mv http://lattes.cnpq.br/9987344139958522
dc.contributor.referee3.fl_str_mv Spadoti, Danilo Henrique
dc.contributor.referee3Lattes.fl_str_mv http://lattes.cnpq.br/8760117075106351
dc.contributor.authorID.fl_str_mv 022.809.336-83
dc.contributor.author.fl_str_mv Carvalho, Luzia Natacha Filipe Paim de
contributor_str_mv Mej?a, Felipe Beltr?n
Mej?a, Felipe Beltr?n
Ribeiro, Jos? Ant?nio Justino
Spadoti, Danilo Henrique
dc.subject.por.fl_str_mv Antena espiral equiangular;balun;casamento de imped?ncias;coeficiente de reflex?o;largura de faixa
topic Antena espiral equiangular;balun;casamento de imped?ncias;coeficiente de reflex?o;largura de faixa
balun;bandwidth;equiangular spiral antenna;impedance matching;reflection coefficient.
Engenharia - Telecomunica??es
dc.subject.eng.fl_str_mv balun;bandwidth;equiangular spiral antenna;impedance matching;reflection coefficient.
dc.subject.cnpq.fl_str_mv Engenharia - Telecomunica??es
description This work presents the construction and evaluation of an excitation system of an equiangular spiral antenna for wide band operation. Antenna analyzes show the potential to operate at large bandwidths with moderate variation in their characteristics, as impedance and gain. However, the same analyzes conclude that is necessary to design and model a structure that provides it is properly excitation allowing the system to extract these advantages. The study of the Tschebyscheff polynomials for the impedance matching and obtaining the smallest reflection coefficient, method applied in balun design. It was based on the idea of using a microstrip line and deduced the equations from the model of its ground plane to reach the most suitable impedance matching structure. Several simulations of the antenna and balun were made in the software Comsol Multiphysics?. The results of input impedance and reflection coefficient showed that the antenna shape, along with the balance of the currents at the feed point, provides the characteristics required for operation over a wide frequency range.
publishDate 2017
dc.date.issued.fl_str_mv 2017-12-07
dc.date.accessioned.fl_str_mv 2018-03-20T17:48:19Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.citation.fl_str_mv Carvalho, Luzia Natacha Filipe Paim de. Sistema de balanceamento e casamento de imped?ncias para irradiadores de faixa ultra larga. 2017. [61]. disserta??o( Mestrado em Engenharia de Telecomunica??es) - Instituto Nacional de Telecomunica??es, [Santa Rita do Sapucai] .
dc.identifier.uri.fl_str_mv http://tede.inatel.br:8080/tede/handle/tede/165
identifier_str_mv Carvalho, Luzia Natacha Filipe Paim de. Sistema de balanceamento e casamento de imped?ncias para irradiadores de faixa ultra larga. 2017. [61]. disserta??o( Mestrado em Engenharia de Telecomunica??es) - Instituto Nacional de Telecomunica??es, [Santa Rita do Sapucai] .
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dc.publisher.department.fl_str_mv Instituto Nacional de Telecomunica??es
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