TY - GEN
T1 - Highly isotropic, low loss epsilon negative (ENG) unit cells at UHF frequencies
AU - Imhof, Pascal D.
AU - Ziolkowski, Richard W.
AU - Mosig, Juan R.
PY - 2006/10
Y1 - 2006/10
N2 - A comparison between realistic metamaterial (MTM) structures and theoretical, well-established dispersive material models, which predict the frequency dependence of the permittivity and the permeability, is performed in the present work. A number of highly subwavelength unit cells are analyzed that could potentially be used to achieve the epsilon-negative (ENG) parameters desired for the antenna applications studied in [1-4]. This presentation will give the effective permittivities and permeabilities of several simulated and measured ENG slabs and ENG cubical structures. For each of these classes of MTMs, it will be explained how the real and imaginary parts of the effective permittivities and permeabilities vary with frequency, how they are related to each other, and how low losses can be achieved. Several RF circuit-based and lumped element implementations to achieve the ε and μ values required for MTM-based efficient electrically small antenna systems have also been considered; those results will be shown in the presentation.
AB - A comparison between realistic metamaterial (MTM) structures and theoretical, well-established dispersive material models, which predict the frequency dependence of the permittivity and the permeability, is performed in the present work. A number of highly subwavelength unit cells are analyzed that could potentially be used to achieve the epsilon-negative (ENG) parameters desired for the antenna applications studied in [1-4]. This presentation will give the effective permittivities and permeabilities of several simulated and measured ENG slabs and ENG cubical structures. For each of these classes of MTMs, it will be explained how the real and imaginary parts of the effective permittivities and permeabilities vary with frequency, how they are related to each other, and how low losses can be achieved. Several RF circuit-based and lumped element implementations to achieve the ε and μ values required for MTM-based efficient electrically small antenna systems have also been considered; those results will be shown in the presentation.
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M3 - Conference contribution
AN - SCOPUS:33847377487
SN - 9290929375
SN - 9789290929376
T3 - European Space Agency, (Special Publication) ESA SP
BT - Proceedings of The European Conference on Antennas and Propagation
T2 - European Conference on Antennas and Propagation: EuCAP 2006
Y2 - 6 November 2006 through 10 November 2006
ER -