Banca de DEFESA: JOSÉ DE ARIMATÉIA PINTO MAGNO
Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.STUDENT : JOSÉ DE ARIMATÉIA PINTO MAGNO
DATE: 10/12/2021
TIME: 09:00
LOCAL: Google Meet
TITLE:
ANALYSIS AND DESIGN OF MICROSTRIP ANTENNA ON CERAMIC SUBSTRATES FOR IEEE 802.11ax SYSTEM APPLICATIONSKEY WORDS:
Carnauba Wax, Microstrip Antenna, IEEE 802.11ax, Miniaturization.
PAGES: 160
BIG AREA: Engenharias
AREA: Engenharia Elétrica
SUBÁREA: Telecomunicações
SPECIALTY: Teoria Eletromagnetica, Microondas, Propagação de Ondas, Antenas
SUMMARY:
The needs of new wireless communication systems demand that radiant devices are increasingly stable and reliable. In recent years, several proposed solutions are observed in the literature to improve the performance of planar antennas applied in modern wireless communication systems. This work presents the use of ceriferous substrates as a biodegradable solution, of low cost, electrically stable and with many application possibilities to improve the operation of planar antennas in wireless communication systems. Although the use of organic substrates is not new, a variety of manufacturers have lines of boards for planar circuits based on organic compounds. This work proposes in an innovative way the use of ceriferous substrates for the development of miniaturized microstrip antennas. Planar antennas were developed for applications in IEEE 802.11 ax protocol services. Throughout this work, the process of characterizing the proposed material, making the substrates, designing and manufacturing the proposed antennas, numerical analysis and experimental characterization will be presented. Four types of ceriferous substrates based on carnauba wax were selected, and the main characteristics were determined by analyzing the material's electrical properties, X-ray diffraction and thermogravimetry. With results from the characterization of the substrates, the radiating devices were designed and numerically analyzed by the Finite Element method, using the Ansys HFSS® software. The antennas were experimentally characterized in the frequency range from 1GHz to 8.5 GHz, where it was possible to verify that the material used as substrate presented stability and good properties for applications in planar circuits, as in the case of microstrip antennas. There is also the possibility of miniaturization of the radiant elements using carnauba wax as a substrate, when compared to the same structure designed on a standard commercial substrate such as FR4, a miniaturization factor of 44.5% was achieved in the volume of the miniaturized antenna on wax substrate.
BANKING MEMBERS:
Presidente - 3921178 - VALDEMIR PRAXEDES DA SILVA NETO
Interno - 6345784 - ADAILDO GOMES D ASSUNCAO
Interno - 1422265 - JOSE PATROCINIO DA SILVA
Externo ao Programa - 338292 - JOAO BOSCO LUCENA DE OLIVEIRA
Externo à Instituição - IDALMIR DE SOUZA QUEIROZ JÚNIOR - UFERSA
Externa à Instituição - SAMANTA MESQUITA DE HOLANDA - UFERSA