Banca de DEFESA: FELIPE FERREIRA DE ARAUJO

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : FELIPE FERREIRA DE ARAUJO
DATE: 18/02/2021
TIME: 09:00
LOCAL: Sala virtual
TITLE:

Wireless communications, Microstrip antennas, Metasurfaces

KEY WORDS:

Wireless communications, Microstrip antennas, Metasurfaces

PAGES: 82
BIG AREA: Engenharias
AREA: Engenharia Elétrica
SUBÁREA: Telecomunicações
SPECIALTY: Teoria Eletromagnetica, Microondas, Propagação de Ondas, Antenas
SUMMARY:

The microstrip antennas are the object of study in several research fields due to their advantages such as: small thickness, reduced weight and easy integration of electronic circuits. Similarly, the evolution observed in the development of microstrip antennas has also been noted in relation to the metasurfaces, a two-dimensional version of a metamaterial. Metasurfaces are artificial materials that are not found in nature and have unconventional electromagnetic characteristics, such as the index of refraction and coefficients of electrical permittivity and negative magnetic permeability, in addition, they have the ability to be used in planar structures, such as microstrip, without interfering with its traditional geometry. The objective of this work is to increase the bandwidth of a microstrip antenna using a new metasurface model. This new geometry is used to generate high order modes in the antenna and with rotation of the metasurface in relation to the antenna we can overlap the modes and obtain a large bandwidth. The proposed antenna presents bandwidth from 5.1 GHz to 8.0 GHz and can be applied in Wi-Fi 5 and 6. Numerical results were chosen with the Ansys HFSS software. A prototype was built and built for S11 and gains were made. The numerical and experimental results are in agreement.

BANKING MEMBERS:
Presidente - 2524053 - ANTONIO LUIZ PEREIRA DE SIQUEIRA CAMPOS
Interno - 6345784 - ADAILDO GOMES D ASSUNCAO
Interno - 3921178 - VALDEMIR PRAXEDES DA SILVA NETO
Externo à Instituição - ALFREDO GOMES NETO - IFPB
Externo à Instituição - JEFFERSON COSTA E SILVA - IFPB