Banca de QUALIFICAÇÃO: HUMBERTO PEREIRA DA PAZ

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : HUMBERTO PEREIRA DA PAZ
DATA : 18/11/2019
HORA: 14:00
LOCAL: Santo André
TÍTULO:

STUDY AND IMPLEMENTATION OF RADIO FREQUENCY RECTIFIERS FOR RECTENNAS

PÁGINAS: 67
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Elétrica
SUBÁREA: Telecomunicações
ESPECIALIDADE: Teoria Eletromagnetica, Microondas, Propagação de Ondas, Antenas
RESUMO:

Radio frequency (RF) energy harvesting is a subfield of renewable ambient energy sources studies, which the goal is the study of electromagnetic to electric energy conversion, using the connection of antennas and rectifiers as a unique rectenna device for the development of energy self-sufficient circuits. Although there is an increasing demand for rectennas development, only a reduced number of papers describe feasible alternatives for low power density applications (µW/cm2 ). Aiming to fill this gap, this work studies rectennas explicitly for low-cost applications, using the 2.4 GHz ISM band with the WiFi technology as an energy source. In this work, RF rectifier topologies characteristics are studied, emphasizing input power levels below -10 dBm. According to it, two series rectifiers are designed, assembled, and measured using lumped and distributed filtering elements, parting from an input impedance matching network on an FR-4 substrate. The preliminary results describe the series rectifier with distributed elements with higher efficiency, resulting in a peak efficiency of 25% for -20 dBm, while the series lumped element rectifier reaches a peak efficiency of 20%. The following steps are the measurement of the rectennas, using Patch and PIFA antennas topologies, and then the output voltage will be regulated using an integrated and commercial boost regulator.

MEMBROS DA BANCA:
Presidente - Interno ao Programa - 1762419 - CARLOS EDUARDO CAPOVILLA
Membro Titular - Examinador(a) Interno ao Programa - 2079380 - JOSE LUIS AZCUE PUMA
Membro Titular - Examinador(a) Externo ao Programa - 1760996 - DENISE CONSONNI
Membro Suplente - Examinador(a) Interno ao Programa - 1671333 - EDMARCIO ANTONIO BELATI