Isotropic Epsilon-Negative Particles

This paper presents two particles with negative permittivity in some frequency band. The response of a single dipole loaded by an inductance is strongly anisotropic. The response of a spider dipole does not depend on the orientation of the electric field of a wave being incident perpendicular to the...

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Bibliographic Details
Main Authors: Machac, J., Protiva, P., Zehentner, J.
Format: Conference Proceeding
Language:English
Subjects:
Anisotropic magnetoresistance
Dielectric substrates
ENG particle
Impedance
Inductance
isotropic metamaterial
Magnetic materials
Metamaterials
negative permittivity
Particle measurements
Permeability
Permittivity measurement
Wires
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Summary:This paper presents two particles with negative permittivity in some frequency band. The response of a single dipole loaded by an inductance is strongly anisotropic. The response of a spider dipole does not depend on the orientation of the electric field of a wave being incident perpendicular to the particle substrate. These two particles are used in designing an isotropic epsilon-negative metamaterial. A unit cell of the metamaterial consists of a cube bearing the proposed particles on its faces, located with specific orientations. The experiments showed that only the single inductively loaded dipole is suitable for manufacturing of an isotropic epsilon-negative metamaterial. The isotropy of the new particles was checked by measurements.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2007.380106