Studies of permittivity and permeability of dielectric matrix with cuboid metallic inclusions in different orientations
In this paper, we investigate the possibility of using the heterogeneous materials, with cuboid metallic inclusions inside a dielectric substrate (host) to control the effective permittivity. We find that in the gigahertz range, such a material demonstrates a significantly larger permittivity compar...
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doaj-2212bfaf289d440e91b82584d3cb06212020-11-24T22:09:24ZengWorld Scientific PublishingJournal of Advanced Dielectrics2010-135X2010-13682014-10-01441450032-11450032-810.1142/S2010135X1450032510.1142/S2010135X14500325Studies of permittivity and permeability of dielectric matrix with cuboid metallic inclusions in different orientationsW. M. Wu0C. C. Njoku1W. G. Whittow2A. M. Zagoskin3F. V. Kusmartsev4J. C. Vardaxoglou5Department of Physics, Loughborough University, Loughborough LE11 3TU, United KingdomSchool of Electronic, Electrical and Systems Engineering, Loughborough University, Loughborough LE11 3TU, United KingdomSchool of Electronic, Electrical and Systems Engineering, Loughborough University, Loughborough LE11 3TU, United KingdomDepartment of Physics, Loughborough University, Loughborough LE11 3TU, United KingdomDepartment of Physics, Loughborough University, Loughborough LE11 3TU, United KingdomSchool of Electronic, Electrical and Systems Engineering, Loughborough University, Loughborough LE11 3TU, United KingdomIn this paper, we investigate the possibility of using the heterogeneous materials, with cuboid metallic inclusions inside a dielectric substrate (host) to control the effective permittivity. We find that in the gigahertz range, such a material demonstrates a significantly larger permittivity compared to the pure dielectric substrate. Three principal orientations of microscale cuboid inclusions have been taken into account in this study. The highest permittivity is observed when the orientation provides the largest polarization (electric dipole moment). The detrimental side effect of the metallic inclusion, which leads to the decrease of the effective magnetic permeability, can be suppressed by the proper choice of shape and orientation of the inclusions. This choice can in fact reduce the induced current and hence maximize the permeability. The dissipative losses are shown to be negligible in the relevant range of frequencies and cuboid dimensions.http://www.worldscientific.com/doi/pdf/10.1142/S2010135X14500325Permittivitycuboidorientationantennainclusions |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
W. M. Wu C. C. Njoku W. G. Whittow A. M. Zagoskin F. V. Kusmartsev J. C. Vardaxoglou |
spellingShingle |
W. M. Wu C. C. Njoku W. G. Whittow A. M. Zagoskin F. V. Kusmartsev J. C. Vardaxoglou Studies of permittivity and permeability of dielectric matrix with cuboid metallic inclusions in different orientations Journal of Advanced Dielectrics Permittivity cuboid orientation antenna inclusions |
author_facet |
W. M. Wu C. C. Njoku W. G. Whittow A. M. Zagoskin F. V. Kusmartsev J. C. Vardaxoglou |
author_sort |
W. M. Wu |
title |
Studies of permittivity and permeability of dielectric matrix with cuboid metallic inclusions in different orientations |
title_short |
Studies of permittivity and permeability of dielectric matrix with cuboid metallic inclusions in different orientations |
title_full |
Studies of permittivity and permeability of dielectric matrix with cuboid metallic inclusions in different orientations |
title_fullStr |
Studies of permittivity and permeability of dielectric matrix with cuboid metallic inclusions in different orientations |
title_full_unstemmed |
Studies of permittivity and permeability of dielectric matrix with cuboid metallic inclusions in different orientations |
title_sort |
studies of permittivity and permeability of dielectric matrix with cuboid metallic inclusions in different orientations |
publisher |
World Scientific Publishing |
series |
Journal of Advanced Dielectrics |
issn |
2010-135X 2010-1368 |
publishDate |
2014-10-01 |
description |
In this paper, we investigate the possibility of using the heterogeneous materials, with cuboid metallic inclusions inside a dielectric substrate (host) to control the effective permittivity. We find that in the gigahertz range, such a material demonstrates a significantly larger permittivity compared to the pure dielectric substrate. Three principal orientations of microscale cuboid inclusions have been taken into account in this study. The highest permittivity is observed when the orientation provides the largest polarization (electric dipole moment). The detrimental side effect of the metallic inclusion, which leads to the decrease of the effective magnetic permeability, can be suppressed by the proper choice of shape and orientation of the inclusions. This choice can in fact reduce the induced current and hence maximize the permeability. The dissipative losses are shown to be negligible in the relevant range of frequencies and cuboid dimensions. |
topic |
Permittivity cuboid orientation antenna inclusions |
url |
http://www.worldscientific.com/doi/pdf/10.1142/S2010135X14500325 |
work_keys_str_mv |
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