Banca de QUALIFICAÇÃO: ISAAC BARROS TAVARES DA SILVA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : ISAAC BARROS TAVARES DA SILVA
DATA : 12/07/2018
HORA: 09:00
LOCAL: Auditório do DCO, no CTEC
TÍTULO:

Ferrimagnetic Resonator Antennas for Wireless Communication Systems Based on Ferrite Compounds

PALAVRAS-CHAVES:

Ferrimagnetic resonator antennas, ferrite antennas, ferrites, magnetic dielectrics, powder metallurgy.

PÁGINAS: 52
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Elétrica
SUBÁREA: Telecomunicações
ESPECIALIDADE: Teoria Eletromagnetica, Microondas, Propagação de Ondas, Antenas
RESUMO:

Due the need to develop new wireless technologies, researches involving communication devices has become intense, although with similar goals: to transmit and receive as many data as possible, efficiently and securely. With this objective, this work presents a proposal for the development of ferrimagnetic resonator antennas (FRAs) produced from ferrite compounds aiming their application in wireless communication systems. The project will be performed starting at the powder production of four different ferrite compounds (nickel, zinc, cobalt, and nickel-zinc) by combustion technique, using ammonia as fuel. The obtained particles will be characterized by scanning electron microscopy, X-ray diffraction, and Rietveld refinement. From the production of the particulate by combustion, ferrimagnetic resonator antennas will be produced through uniaxial press, with constant pressure and subsequent sintering process. The electrical and magnetic characterization will be performed after the pressed samples are obtained and, later, a statistical data treatment will be applied to ensure reliability. After the electrical and magnetic characterizations, simulations of the proposed antennas will be carried out in the High Frequency Structure Simulator (HFSS) software, using the finite element method (FEM). Thereafter, prototypes of these antennas will be fabricated and measured, for comparison purpose. The results of the measurements of the antennas prototypes will be statistically analyzed so that they can be properly compared with the results of the simulations. Thereby, it is expected to obtain results with high reliability level for the development of ferrimagnetic resonator antennas.

MEMBROS DA BANCA:
Interno - 6345784 - ADAILDO GOMES D ASSUNCAO
Interno - 349732 - LAERCIO MARTINS DE MENDONCA
Externo ao Programa - 338292 - JOAO BOSCO LUCENA DE OLIVEIRA
Externo à Instituição - GLAUCO FONTGALLAND - UFCG
Externo à Instituição - JEFFERSON COSTA E SILVA - IFPB