Metamaterial inspired improved antennas and circuits
AUTOR(ES)
Davi Bibiano Brito
FONTE
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia
DATA DE PUBLICAÇÃO
06/12/2010
RESUMO
Metamaterials exhibiting negative refraction have attracted a great amount of attention in recent years mostly due to their exquisite electromagnetic properties. These materials are artificial structures that exhibit characteristics not found in nature. It is possible to obtain a metamaterial by combining artificial structures periodically. We investigated the unique properties of Split Ring Resonators, High impedance Surfaces and Frequency Selective Surfaces and composite metamaterials. We have successfully demonstrated the practical use of these structures in antennas and circuits. We experimentally confirmed that composite metamaterial can improve the performance of the structures considered in this thesis, at the frequencies where electromagnetic band gap transmission takes place
ASSUNTO(S)
engenharia eletrica left-handed material metamaterial split ring resonator negative permittivity negative permeability high impedance surface frequency selective surface electromagnetic band gap negative refraction fabry-pérot
