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Previous issue date: 2017-11-24 / As aplica??es de antenas de microfita abrangem uma grande ?rea das Telecomunica??es,
principalmente em sistemas que necessitem de componentes de volume e peso
reduzido, como comunica??es aeroespaciais. Da? in?meros pesquisadores t?m estudado,
cada vez mais, t?cnicas de otimiza??o no projeto dessas antenas. Assim, esse trabalho
tem como principal objetivo a otimiza??o de projeto de antenas de microfita. Para isso,
utiliza-se o M?todo Taguchi no qual cada par?metro f?sico ? definido a partir da frequ?ncia
de opera??o desejada pelo usu?rio, das caracter?sticas el?tricas do diel?trico que ser?
utilizado para fabricar a antena (espessura do substrato e constante diel?trica do material)
e da defini??o dos limites de otimiza??o (valores m?ximo e m?nimo) que os par?metros
f?sicos podem atingir. Especificamente, a an?lise usa o m?todo Taguchi com tratamento
dos limites, para que o valor final otimizado n?o fique fora da faixa especificada. Na
an?lise, s?o considerados patches retangulares e circulares, para projetos nas faixas de
frequ?mcia especificas para WLAN. No trabalho, s?o apresentados resultados num?ricos
e experimentais para a perda de retorno. S?o feitas compara??es entre esses resultados.
Uma boa concord?ncia entre os resultados ? observada. S?o apresentadas, ainda, sugest?es
de continuidade do trabalho. / The applications of microstrip antennas cover a large area of Telecommunications,
especially in systems that require components of volume and reduced weight, such as
aerospace communications. Hence numerous researchers have been studying, more and
more, techniques of optimization in the design of these antennas. Thus, this work has
as main objective the optimization of microstrip antenna design. For this, the Taguchi
Method is used in which each physical parameter is defined from the frequency of operation
desired by the user, of the electric characteristics of the dielectric that will be used
to make the antenna (substrate thickness and dielectric constant of the material) and definition
of optimization limits (maximum and minimum values) that physical parameters
can achieve. Specifically, the analysis uses the Taguchi method with boundary treatment
so that the optimum final value does not fall outside the specified range. In the analysis,
rectangular and circular patches are considered for projects in the frequency bands specific
to WLAN. In the paper, numerical and experimental results are presented for loss
of return. Comparisons are made between these results. A good agreement between the
results is observed. Suggestions for continuity of work are also presented.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/24836 |
| Date | 24 November 2017 |
| Creators | Lira, Ruann V?ctor de Andrade |
| Contributors | 79090095420, Silva, Gutembergue Soares da, 06740553491, Silva, Jos? Patrocinio da, 67160042468, Mani?oba, Robson Hebraico Cipriano, 04991904404, Campos, Antonio Luiz Pereira de Siqueira |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM ENGENHARIA EL?TRICA E DE COMPUTA??O, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| 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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