Made available in DSpace on 2014-12-17T14:56:20Z (GMT). No. of bitstreams: 1
FranciscoCGSS_Capa_ate_pag41.pdf: 9091246 bytes, checksum: 6f81612f5fd4ab8558666746d9be5489 (MD5)
Previous issue date: 2014-06-05 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Frequency selective surfaces (Frequency Selective Surface - FSS) are often used
in various applications in telecommunications. Some of these applications may require
that these structures have response with multiple resonance bands. Other applications
require that the FSS response have large frequency range, to meet the necessary
requirements. FSS to design with these features there are numerous techniques cited in
the scientific literature. Thus, the purpose of this paper is to examine some common
techniques such as: Overlap of FSS; Elements combined; Elements Elements
convolucionados and fractals. And designing multiband FSS and / or broadband
selecting simple ways in terms of construction and occupy the smallest possible space,
aiming at practical applications.
Given these requirements, three projects FSS were performed: a technology
applied to IEEE 802.11 a/b/g/n and two projects for application in UWB. In project
development, commercial software Ansoft DesignerTM and experimental results were
satisfactory was used / Superf?cies seletivas em frequ?ncia (Frequency Selective Surface - FSS) s?o
usadas frequentemente em diversas aplica??es em telecomunica??es. Algumas dessas
aplica??es podem exigir que essas estruturas tenham resposta com m?ltiplas bandas de
resson?ncia. Outras aplica??es exigem que as FSS tenham resposta em faixa larga de
frequ?ncia, para atender aos requisitos necess?rios. Para projetar uma FSS com essas
caracter?sticas existem in?meras t?cnicas citadas na literatura cient?fica. Assim, o
prop?sito deste trabalho ? analisar algumas t?cnicas utilizadas tais como: Sobreposi??o
de FSS; Elementos combinados; Elementos convolucionados e Elementos fractais. E
projetar FSS multibanda e/ou banda larga selecionando maneiras simples em termos de
constru??o e que ocupem o menor espa?o poss?vel, visando aplica??es pr?ticas.
Tendo em vista estes requisitos, foram realizados tr?s projetos de FSS: um
aplicado a tecnologia IEEE 802.11 a/b/g/n e dois projetos para aplica??o em UWB. No
desenvolvimento dos projetos, foi utilizado o software comercial Ansoft DesignerTM e
os resultados experimentais se mostraram satisfat?rios
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15508 |
| Date | 05 June 2014 |
| Creators | Silva Segundo, Francisco Carlos Gurgel da |
| Contributors | CPF:79090095420, http://lattes.cnpq.br/1982228057731254, Gomes Neto, Alfr?do, CPF:33312079420, http://lattes.cnpq.br/1403715441701958, Silva, Jose Patrocinio da, CPF:67160042468, http://lattes.cnpq.br/5753289728835624, Martins, Ronaldo de Andrade, CPF:05644097404, http://lattes.cnpq.br/0978273656336966, Campos, Ant?nio Luiz Pereira de Siqueira |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Engenharia El?trica, UFRN, BR, Automa??o e Sistemas; Engenharia de Computa??o; Telecomunica??es |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
Page generated in 0.0015 seconds