Banca de DEFESA: RAFAELA GOMES GONÇALVES DE CARVALHO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : RAFAELA GOMES GONÇALVES DE CARVALHO
DATA : 30/01/2017
HORA: 14:00
LOCAL: Auditório do Departamento de Engenharia de Comunicações
TÍTULO:

SIMULATION AND DESIGN OF MECHANICALLY RECONFIGURABLE FSS FOR MICROWAVE APPLICATIONS

PALAVRAS-CHAVES:

Frequency selective surface, FSS, reconfigurable FSS, mechanical reconfigurability, microcontrollable interface.

PÁGINAS: 65
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Elétrica
SUBÁREA: Telecomunicações
ESPECIALIDADE: Teoria Eletromagnetica, Microondas, Propagação de Ondas, Antenas
RESUMO:

Reconfigurability is a very important feature in modern communication systems because it allows the same structure to adapt to different scenarios of the same application, such as radomes, cognitive radio, and adaptive screens that block unwanted wireless transmissions. This characteristic can be achieved by traditional methods, such as the use of active semiconductor devices (PIN diodes, Schottky) or variable capacitors coupled to each basic element of the frequency selective surface (FSS), requiring the use of a separate circuit to feed these components. However, these methods require a high number of active elements, which increases the complexity and cost of manufacturing, opening space for the emergence of simpler and more robust techniques for selectivity, such as mechanical reconfigurability. This work consists of the development of a reconfigurable frequency selective surface (FSS), to operate in the X-band, composed of triangular patch elements printed on a dielectric layer of fiberglass (FR-4). The developed FSS allows the reconfiguration of the resonant frequency from the variation of the angle of the incident wave in the structure, in the TE mode, and can be applied in the cognitive radio technology through a microcontrolled interface. The analysis of the structure of the FSS is done through Ansoft Designer software.

MEMBROS DA BANCA:
Presidente - 1422265 - JOSE PATROCINIO DA SILVA
Interno - 6345784 - ADAILDO GOMES D ASSUNCAO
Interno - 349732 - LAERCIO MARTINS DE MENDONCA
Externo à Instituição - ADAILDO GOMES D ASSUNCAO JUNIOR - IFPB
Externo à Instituição - ALFREDO GOMES NETO - IFPB