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Previous issue date: 2011-12-19 / This work presents techniques used to design and manufacture microstrip patch
antennas for applications in portable and mobile devices. To do so, are evaluated
several factors that can influence the performance of microstrip patch antennas.
Miniaturization techniques are studied and employed in order to apply this type of
antenna in mobile and / or mobile.
The theories of microstrip patch antennas are addressed by analyzing characteristics
such as constitution, kinds of patches, substrates, feeding methods, analysis methods,
the main advantages and disadvantages and others.
Techniques for obtaining broadband microstrip patch antennas were surveyed in
literature and exemplified mainly by means of simulations and measurements. For
simulations of the antennas was used the commercial software .
In addition, antenna miniaturization techniques have been studied as a main concern
the fundamental limits of antennas with special attention to electrically small antennas
because they are directly linked to the microstrip patch antennas.
Five design antennas are proposed to demonstrate the effectiveness of techniques
used to obtain the microstrip patch antennas broadband and miniaturized for use in
mobile devices and/or portable. For this, the proposed antennas were simulated, built
and measured. The antennas are proposed to be used in modern systems of wireless
communications such as DTV, GPS, IEEE 802.16, IEEE 802.11, etc. The simulations of
the antennas were made in business and computer programs. The measured results
were obtained with a parser Vector of networks of the Rhode and Schwarz model ZVB
14 / Esse trabalho apresenta t?cnicas usadas para projetar e fabricar antenas patch de
microfita para aplica??es em dispositivos port?teis e m?veis. Para isso, s?o avaliados
diversos fatores que podem influenciar no desempenho das antenas patch de
microfita. T?cnicas de miniaturiza??o s?o estudadas e empregadas visando a aplica??o
deste tipo de antena em dispositivos port?teis e/ou m?veis.
Fundamentos te?ricos sobre as antenas patch de microfita s?o abordados analisandose
caracter?sticas como: constitui??o, tipos de patches, substratos, m?todos de
alimenta??o, m?todos de an?lises, principais vantagens e desvantagens dentre outros.
T?cnicas para obten??o de antenas patch de microfita banda larga foram pesquisadas
na literatura e exemplificadas principalmente por meio de simula??es e medi??es.
Para as simula??es das antenas foi utilizado o programa computacional comercial
.
Al?m disso, t?cnicas de miniaturiza??o de antenas foram estudadas tendo como
preocupa??o principal os limites fundamentais das antenas com aten??o especial a
antenas eletricamente pequenas por estarem diretamente vinculadas ?s antenas patch
de microfita.
Cinco projetos de antenas s?o propostos para comprovar a efici?ncia das t?cnicas
utilizadas para obten??o de antenas patch de microfita banda larga e miniaturizadas,
para aplica??o em dispositivos m?veis e/ou port?teis. Para isso, as antenas propostas
foram simuladas, constru?das e medidas. As antenas foram propostas para serem
utilizadas em sistemas modernos de comunica??es sem fio como: DTV, GPS, IEEE
802.16, IEEE 802.11, etc. As simula??es das antenas foram feitas nos programas
computacionais comerciais e . Os resultados
medidos foram obtidos com um analisador vetorial de redes da Rhode and Schwarz
modelo ZVB 14
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15377 |
| Date | 19 December 2011 |
| Creators | Morais, Jos? Haroldo Cavalcante de |
| Contributors | CPF:79090095420, http://lattes.cnpq.br/1982228057731254, Silveira, Luiz Felipe de Queiroz, CPF:02863206494, http://lattes.cnpq.br/4139452169580807, Silva, Jefferson Costa e, CPF:60137495404, http://lattes.cnpq.br/7399512856151138, Vasconcelos, Cristhianne de F?tima Linhares de, CPF:03831125406, http://lattes.cnpq.br/3140725798737102, 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 |
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