Journal ArticleDOI
Waveguide miniaturization using uniaxial negative permeability metamaterial
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TLDR
In this article, a rectangular waveguide filled with anisotropic uniaxial metamaterial with transversal negative effective permeability was investigated both theoretically and experimentally, and it was shown that such a waveguide supports propagation of the backward wave below the cutoff frequency, thus it can be considered as a dual of the ordinary waveguide.Abstract:
A rectangular waveguide filled with anisotropic uniaxial metamaterial with transversal negative effective permeability is investigated both theoretically and experimentally. It is shown that such a waveguide supports propagation of the backward wave below the cutoff frequency, thus, it can be considered as a dual of the ordinary waveguide. The transversal dimension of this waveguide can be arbitrarily smaller than half of a wavelength in the filling material, provided that the transversal permeability is negative. This peculiar behavior may be used for fabrication of miniaturized rectangular waveguides. Several experimental miniaturized waveguides loaded with double ring resonators in 7 GHz frequency band have been designed, fabricated and tested. The measured results revealed backward-wave passband located below the cutoff frequency. Furthermore, it was experimentally shown that the increase of the physical length of the waveguide caused the decrease of the electrical length. This is a direct proof of the backward-wave propagation since the phase of the backward wave increases along the waveguide.read more
Citations
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Journal ArticleDOI
Design of Spiral and Multiple Split-Ring Resonators for the Realization of Miniaturized Metamaterial Samples
TL;DR: In this paper, the design of miniaturized resonant inclusions to be employed in the practical realization of metamaterial samples with anomalous values of the real part of the permeability is presented.
Journal ArticleDOI
Substrate Integrated Waveguide Loaded by Complementary Split-Ring Resonators and Its Applications to Miniaturized Waveguide Filters
Yuandan Dong,Tao Yang,T. Itoh +2 more
TL;DR: In this paper, a substrate integrated waveguide with square complementary split-ring resonators (CSRRs) etched on the waveguide surface is investigated, which allows the implementation of a forward-wave passband propagating below the characteristic cutoff frequency of waveguide.
Journal ArticleDOI
Metamaterial-Based Antennas
Yuandan Dong,Tatsuo Itoh +1 more
TL;DR: This paper presents a detailed review upon the most recent research efforts associated with those metamaterial-based small antennas, discussed and classified in several different categories such as the antennas based on dispersion engineering, metaresonators, and meetamaterial loadings.
Journal ArticleDOI
Design and Characterization of Miniaturized Patch Antennas Loaded With Complementary Split-Ring Resonators
TL;DR: In this paper, the design of compact patch antennas loaded with complementary split-ring resonators (CSRRs) and reactive impedance surface (RIS) is presented, where CSRR is incorporated on the patch as a shunt LC resonator providing a low resonance frequency and RIS is realized using the two-dimensional metallic patches printed on a metal-grounded substrate.
Journal ArticleDOI
Subwavelength, Compact, Resonant Patch Antennas Loaded With Metamaterials
TL;DR: In this article, the matching and radiation properties of subwavelength resonant patch antennas filled with double-negative, double-positive, and/or single-negative metamaterial blocks are analyzed.
References
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The Electrodynamics of Substances with Simultaneously Negative Values of ∊ and μ
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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.
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Composite Medium with Simultaneously Negative Permeability and Permittivity
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Planar negative refractive index media using periodically L-C loaded transmission lines
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