Radiation from elementary sources in a uniaxial wire medium

Silveirinha, Mário G.; Maslovski, Stanislav I.

doi:10.1103/physrevb.85.155125

Cited by 36 publications

(42 citation statements)

References 31 publications

(73 reference statements)

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“…A specific property of the wire medium is a broadband increase of the density of photonic states as compared to vacuum by the factor of the order of (λ/a) 2 , where λ is the wavelength and a is the lattice period [13]. This leads to the dramatic enhancement of the light-matter interaction effects, such as spontaneous emission (Purcell effect) [14,15,16], Vavilov-Cherenkov radiation [17,18] and heat transport [19].…”

Section: Introductionmentioning

confidence: 96%

Experimental investigation of magnetic Purcell factor in wire metamaterials

Krasnok

Slobozhanyuk

Belov

et al. 2014

Proceedings of the International Conference Days on Diffraction 2014

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We present an experimental study of the magnetic Purcell effect in finite arrays of the wire metamaterial. By directly measuring the spatial-frequency map of the Purcell factor we explicitly demonstrate how the Purcell factor is enhanced at the FabryPérot resonances of the wire metamaterial block in microwave frequency range. The experimental results are in a good agreement with theoretical and numerical estimations.

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Section: Introductionmentioning

confidence: 96%

Experimental investigation of magnetic Purcell factor in wire metamaterials

Krasnok

Slobozhanyuk

Belov

et al. 2014

Proceedings of the International Conference Days on Diffraction 2014

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“…Planar structures including wire-medium (WM) with different wire orientations have been studied in the last decades by various authors [1], [2]. In this paper we analyze the modal properties of closed and open planar structures loaded with a WM slab having vertically aligned wires (see Fig.…”

Section: Introductionmentioning

confidence: 99%

Wire-medium loaded planar structures: A novel transmission-line model and relevant dispersion properties

Comite

Burghignoli

Baccarelli

et al. 2015

2015 European Microwave Conference (EuMC)

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A transmission-line model is developed for the analysis of planar waveguides including wire-medium slabs with vertically aligned wires. The developed network formalism allows for an effective determination of the modal dispersion equation via transverse resonance, as opposed to the more cumbersome fieldmatching approach. Closed and open parallel-plate waveguides loaded with wire medium are considered. The suppression of undesired TEM-mode propagation and the possible achievement of a unimodal regime are investigated. Numerical results, validated also against state-of-the-art simulation software, confirm the accuracy and effectiveness of the proposed approach. Dispersion relations of complex modes are obtained for a class of leaky-wave antennas based on open wire-medium layered structures covered by partially reflecting screens.

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“…The directive radiation characteristics of different type of antennas embedded in wire medium have been discussed in [8][9][10][11]. Also, the electromagnetic properties of a waveguide and cavity resonator filled with wire medium are studied by Nefedov and Viitanen [12] and Couture et al [13] respectively.…”

Section: Introductionmentioning

confidence: 99%

Imperfections for an equivalent surface impedance of a uniaxial wire medium

Awan

2014

Journal of Electromagnetic Waves and Applications

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A uniaxial wire medium is a medium formed by a two-dimensional array of conducting parallel thin wires. An analytical study of small imperfections in positioning of wires is considered for an equivalent surface impedance of this wire medium. It is studied that effects of these small imperfections in positioning of wires introduce an equivalent additional surface impedance. This additional impedance is taken to be an error impedance which is mainly dependent upon the positioning error standard deviations along two orthogonal directions. It is further studied that an increase in the positioning error standard deviations along two perpendicular directions increases the magnitude of this error impedance. Also, if the propagation of wave is taken to be normal inside the wire medium then the effects of imperfections in a plane along direction of propagation are more pronounced than these imperfections in a plane transverse to the direction of propagation.

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Radiation from elementary sources in a uniaxial wire medium

Cited by 36 publications

References 31 publications

Experimental investigation of magnetic Purcell factor in wire metamaterials

Experimental investigation of magnetic Purcell factor in wire metamaterials

Wire-medium loaded planar structures: A novel transmission-line model and relevant dispersion properties

Imperfections for an equivalent surface impedance of a uniaxial wire medium

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