@inproceedings{Joaquim2017metamaterialsb,
title = {Experimental Determination of the Permittivity and Permeability of an Array of Split-Ring Resonators in a X-Band Waveguide},
author = {Joaquim P Leite Neto and Joaquim J Barroso and Pedro J Castro and Antonio Tomaz and Jos\'{e} Edimar B Oliveira},
url = {https://www.sige.ita.br/edicoes-anteriores/2017/st/ST_10_1.pdf},
year = {2017},
date = {2017-01-01},
booktitle = {Simp\'{o}sio de Aplica\c{c}\~{o}es Operacionais em \'{A}reas de Defesa 2017 (SIGE2017)},
abstract = {The permeability and permittivity of an anisotropic metamaterial consisting of a periodic arrangement of resonant rings inserted in a rectangular waveguide excited by magnetic probes are determined experimentally. It is shown that a high transmission is achieved below the cutoff frequency of the empty guide, and depending on the intensity of the coupling between the magnetic probes and resonant rings the transmission system behaves like a balanced CRLH line (Composite Right/Left Handed) or as a purely LH line (Left-Handed). Although sufficient, the condition that the electric permittivity and magnetic permeability be both negative is not a necessary condition to ensure a negative refractive index over a frequency range, a situation in which the phase velocity is oppositely directed to the power flow.},
keywords = {metamaterials, retrieval of, split-ring resonator},
pubstate = {published},
tppubtype = {inproceedings}
}
The permeability and permittivity of an anisotropic metamaterial consisting of a periodic arrangement of resonant rings inserted in a rectangular waveguide excited by magnetic probes are determined experimentally. It is shown that a high transmission is achieved below the cutoff frequency of the empty guide, and depending on the intensity of the coupling between the magnetic probes and resonant rings the transmission system behaves like a balanced CRLH line (Composite Right/Left Handed) or as a purely LH line (Left-Handed). Although sufficient, the condition that the electric permittivity and magnetic permeability be both negative is not a necessary condition to ensure a negative refractive index over a frequency range, a situation in which the phase velocity is oppositely directed to the power flow.
