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Miniaturization of waveguide antennas using electromagnetic metamaterials
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TLDR
In this paper, an open-ended rectangular waveguide antenna with broadside coupled split ring resonators (BC-SRR) was proposed for the 5.5-6.7 GHz frequency band.Abstract:
In the era of miniaturized hand - held devices rectangular waveguides have been replaced by planar guiding structures in many of the applications for miniaturizations. Use of waveguides is inevitable in many applications. Waveguides offer a number of advantages over planar guiding structures, viz., lower loss and high power handling capability, absence of substrate mode losses etc. Waveguide manufacturing cost and their size at microwave frequencies are the biggest disadvantages. Over the years a number of researchers have tried to miniaturize waveguides. Classical waveguide miniaturization is by filling the waveguides with a dielectric yielding to size reduction of 1/ relative to an empty waveguide. The disadvantages of such dielectric filled waveguides are, high cost and such waveguides cannot be used as an antenna.
In this thesis we propose an open - ended rectangular waveguide antenna loaded with broadside coupled split - ring resonators (BC-SRR) radiating below the cutoff frequency of the waveguide. An X-Band, open - ended waveguide antenna loaded with BC-SRR operating in a 5.5-6.7 GHz frequency band was designed, fabricated and tested.read more
Citations
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Proceedings ArticleDOI
Miniaturization of waveguide antenna using square/circular arrays of SRR
TL;DR: In this paper, a miniaturized opened ended rectangular waveguide antenna radiating below the cutoff frequency of the waveguide is investigated, which is achieved by loading the antenna with electromagnetic metamaterial (MTM) consisting of Square Shaped Ring Resonators (SSRR) or Circular shaped Ring Resonator (CSRR).
Journal Article
Rectangular waveguide radiator miniaturization using electromagnetic infinity-shaped metamaterial resonator
M. Ouda,Nidal A. Abutahoun +1 more
TL;DR: In this paper, a miniaturized open-ended rectangular waveguide antenna radiating below the cut-off frequency of the waveguide is proposed by periodically loading the antenna with electromagnetic metamaterial (MTM) consisting of infinity shaped resonators.
Effection and Electromagnetic Coupling of Metamaterial in Waveguide Propagation
TL;DR: In this paper, an open-ended waveguide antenna is loaded with broadside coupled omega shaped metamaterial, which can radiate below the cutoff frequency of corresponding empty waveguide.
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
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).
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Extremely Low Frequency Plasmons in Metallic Mesostructures
TL;DR: A mechanism for depression of the plasma frequency into the far infrared or even GHz band is proposed: Periodic structures built of very thin wires dilute the average concentration of electrons and considerably enhance the effective electron mass through self-inductance.
BookDOI
Electromagnetic metamaterials : transmission line theory and microwave applications : the engineering approach
Christophe Caloz,Tatsuo Itoh +1 more
TL;DR: In this paper, the authors define Metamaterials (MTMs) and Left-Handed (LH) MTMs as a class of two-dimensional MTMs.
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