Banca de DEFESA: VITOR FERNANDES DE BARROS

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : VITOR FERNANDES DE BARROS
DATA : 29/06/2017
HORA: 14:00
LOCAL: Sala de reuniões do PPgEEC
TÍTULO:

Application of Fractal Curves in Convoluted Elements for the Miniaturized and Angular Stable FSS Project

PALAVRAS-CHAVES:

Frequency selective surfaces, fractalization, convoluted elements, miniaturization techniques.

PÁGINAS: 114
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Elétrica
SUBÁREA: Telecomunicações
ESPECIALIDADE: Teoria Eletromagnetica, Microondas, Propagação de Ondas, Antenas
RESUMO:

Frequency selective surfaces (FSS) have been used in telecommunications for various purposes ranging from the manufacture of hyper-gain antennas and subrefletors to its use as blocking signals in prisons. The possibility of coupling them to microstrip antennas and waveguides, and its enormous potential to cope with the arising problem of interference within communication systems, make them even more attractive to the market. The aim of this study is to describe and analyze a FSS multiband behavior, with independent of polarization and angular stability, which is a result of combining different miniaturization techniques, such as fractalization and the use of convoluted elements, so as to make it more compact, lightweight and efficient. The results are then obtained with commercial software Ansoft Designer, used for analyzing the behavior of FSS electromagnetic fields through the Method of Moments (MoM). To achieve this, in this thesis, it is previously conducted a bibliographic study of the FSS and monofractal geometry. This work also describes the main miniaturization techniques available in the literature, detailing the effects, benefits and disadvantages of each one with respect to the response of the structure.

MEMBROS DA BANCA:
Externo à Instituição - ALFREDO GOMES NETO - IFPB
Presidente - 2524053 - ANTONIO LUIZ PEREIRA DE SIQUEIRA CAMPOS
Externo à Instituição - ERICO CADINELI BRAZ - IFRN
Externo ao Programa - 346385 - RONALDO DE ANDRADE MARTINS
Interno - 1349234 - SANDRO GONCALVES DA SILVA