Journal ArticleDOI
Direct calculation of permeability and permittivity for a left-handed metamaterial
TLDR
In this article, an electromagnetic metamaterial was fabricated and demonstrated to exhibit a "left-handed" (LH) propagation band at microwave frequencies, a situation never observed in naturally occurring materials or composites.Abstract:
Recently, an electromagnetic metamaterial was fabricated and demonstrated to exhibit a “left-handed” (LH) propagation band at microwave frequencies. A LH metamaterial is one characterized by material constants—the permeability and permittivity—which are simultaneously negative, a situation never observed in naturally occurring materials or composites. While the presence of the propagation band was shown to be an inherent demonstration of left handedness, actual numerical values for the material constants were not obtained. In the present work, using appropriate averages to define the macroscopic fields, we extract quantitative values for the effective permeability and permittivity from finite-difference simulations using three different approaches.read more
Citations
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Patent
Slotted waveguide antenna with metamaterial structures
TL;DR: In this paper, a slotted waveguide antenna system with a split ring resonator, a substrate and a wire structure is described, which is configured to exhibit a negative effective permittivity and negative effective permeability for an operating frequency range.
Proceedings ArticleDOI
A Compact Multi-Split Ring Resontor Loaded Antenna
TL;DR: In this paper, a Compact Multi Split Ring Resonator Loaded Antenna (MSRR) with four rings is used for loading purpose and the gain of the antenna is 3.9 dBi and impedance bandwidth is 0.4217 GHz.
Dissertation
Electromagnetic Metamaterials for Antenna Applications
TL;DR: Sajuyigbe et al. as discussed by the authors proposed an Electromagnetic Metamaterials for Antenna Applications (EMME-AIA) for the purpose of antenna applications.
Dissertation
Metamaterial inspired improved antennas and circuits
TL;DR: In this article, the authors investigated the properties of split ring resonance, high impedance surface and frequency selective surface and showed that composite metamaterials can improve the performance of the structures considered in this thesis.
Journal ArticleDOI
Use of loss limit approach to zero in scattering-based parameter retrieval of elastic micro-structured media
Reza Abedi,Alireza V. Amirkhizi +1 more
TL;DR: In this paper, the authors used the continuity of the wavenumber to determine the constitutive parameters of a lossless 1D unit cell and compared the two loss models of nonzero damping and complex modulus in terms of their energy loss characteristics.
References
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Journal ArticleDOI
The Electrodynamics of Substances with Simultaneously Negative Values of ∊ and μ
Journal ArticleDOI
Magnetism from conductors and enhanced nonlinear phenomena
TL;DR: In this paper, it was shown that microstructures built from nonmagnetic conducting sheets exhibit an effective magnetic permeability /spl mu/sub eff/, which can be tuned to values not accessible in naturally occurring materials.
Journal ArticleDOI
Composite Medium with Simultaneously Negative Permeability and Permittivity
TL;DR: A composite medium, based on a periodic array of interspaced conducting nonmagnetic split ring resonators and continuous wires, that exhibits a frequency region in the microwave regime with simultaneously negative values of effective permeability and permittivity varepsilon(eff)(omega).
Journal ArticleDOI
Effective response functions for photonic bandgap materials
TL;DR: In this article, an effective description for a metalodielectric photonic bandgap (PBG) material was developed for a semi-infinite and slab observables.