Banca de DEFESA: ÁDLLER DE OLIVEIRA GUIMARÃES

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : ÁDLLER DE OLIVEIRA GUIMARÃES
DATA : 02/12/2016
HORA: 09:00
LOCAL: Mini-auditório do PPGEEC da UFRN
TÍTULO:

Computational Intelligence Applied to Optimization of Effects Caused by Use of PBG Structures in Microstrip Antennas.

PALAVRAS-CHAVES:

Microstrip Antenna, PBG, Computational Intelligence and Neural Network.

PÁGINAS: 108
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Elétrica
SUBÁREA: Telecomunicações
ESPECIALIDADE: Teoria Eletromagnetica, Microondas, Propagação de Ondas, Antenas
RESUMO:

The increasing demand for wireless technology in contemporary society requires the construction of integrated microwave circuits each time more sophisticated. In this sense, the planar microstrip antenna stands out because their small sizes and used in various applications, with emphasis on airplanes, satellites and mobile communication systems. In addition, recent researches shows the use of computing intelligence in telecommunications for analysis of new applications at microstrip antennas, as also the optimization of existing applications, searching for a better performance at the reception and / or signal transmission. In this context, this work has as objective get the radiation properties of microstrip antennas using the new models of Photonic Band Gap structures (PBG) based in meshes with periodic distributions and quasi-periodic printed on the substrate. Then, the prototypes of antennas developed were used to form a database for feeding the process of training an Artificial Neural Network (ANN), in order to obtain resonance frequency for second band of the antennas. Finally, it was optimized the procedure for obtaining the project frequency and PBG structure required for the antenna operating in a given frequency of resonance. According to the results, it can be concluded that it is possible to use an ANN in the optimization of a project of microstrip antenna with PBG substrate. The validation of the results provided by the ANN was based on building prototypes of the antennas, which showed good agreement between the simulated and measured values.

MEMBROS DA BANCA:
Presidente - 1422265 - JOSE PATROCINIO DA SILVA
Interno - 347063 - HUMBERTO CESAR CHAVES FERNANDES
Interno - 349732 - LAERCIO MARTINS DE MENDONCA
Externo à Instituição - JONATHAN PAULO PINHEIRO PEREIRA - IFRN
Externo à Instituição - MARINALDO PINHEIRO DE SOUSA NETO - IFRN