Search Results - "Vallecchi, A"

Resonant isotropic optical magnetism of plasmonic nanoclusters in visible light by Ponsinet, V., Barois, P., Gali, S. M., Richetti, P., Salmon, J. B., Vallecchi, A., Albani, M., Le Beulze, A., Gomez-Grana, S., Duguet, E., Mornet, S., Treguer-Delapierre, M.

“…We present a full experimental characterization of isotropic artificial optical magnetism at visible frequencies produced by “raspberrylike” plasmonic…”
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Superdirective dimers of coupled self-resonant split ring resonators: Analytical modelling and numerical and experimental validation by Vallecchi, A., Radkovskaya, A., Li, L., Faulkner, G., Stevens, C. J., Shamonina, E.

“…Superdirective antennas developed over the last century have received renewed interest in recent years from the development of metamaterials. These arrays of…”
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Physical Optics Curved-Boundary Dielectric Plate Scattering Formulas for an Accurate and Efficient Electromagnetic Characterization of a Class of Natural Targets by Vallecchi, A.

“…Closed-form representations of the physical optics (PO) field scattered in the far zone by plane penetrable dielectric angular sectors of arbitrary opening…”
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Design of dual-polarized series-fed microstrip arrays with low losses and high polarization purity by Vallecchi, A., Gentili, G.B.

“…The design of a dual-polarized microstrip series-fed linear traveling-wave array is described in this paper. The array is composed of two identical subarrays…”
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2-D Isotropic Effective Negative Refractive Index Metamaterial in Planar Technology by Vallecchi, A., Capolino, F., Schuchinsky, A.G.

“…We present a fully printable effective negative refractive index (NRI) metamaterial responsive to arbitrarily linearly polarized incident waves. The proposed…”
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Voltage Controlled Intertwined Spiral Arrays for Reconfigurable Metasurfaces by Vallecchi, A., Schuchinsky, A. G., Langley, R. J.

“…Reconfigurable bistate metasurfaces composed of interwoven spiral arrays with embedded pin diodes are proposed for single and dual polarisation operation. The…”
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Metamaterial made of paired planar conductors: Particle resonances, phenomena and properties by Donzelli, G., Vallecchi, A., Capolino, F., Schuchinsky, A.

“…The properties and characteristics of a recently proposed anisotropic metamaterial based upon layered arrays of tightly coupled pairs of “dogbone” shaped…”
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Diffraction by two classes of anisotropic impedance half-planes with nonaxial anisotropy tensors by Vallecchi, A.

“…The three-dimensional plane wave scattering from anisotropic impedance half-planes having their principal anisotropy axes arbitrarily oriented with respect to…”
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Skew incidence diffraction by an anisotropic impedance half plane with a PEC face and arbitrarily oriented anisotropy axes by Manara, G., Nepa, P., Pelosi, G., Vallecchi, A.

“…High-frequency expressions for the field scattered by a half-plane with a perfectly conducting and an anisotropic impedance face are provided in the format of…”
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Superdirective meta-arrays at telecommunication wavelengths by Vallecchi, A, Stevens, C, Shamonina, E

“…The objective of this work is to develop superdirective nanoantennas (NAs) with the capability of concentrating radiated light into a narrow angular region…”
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Wireless power transfer in the presence of a conducting interface: an analytical solution by Vallecchi, A, Stevens, C, Shamonina, E

“…A combined electromagnetic-circuit model of wireless power transfer (WPT) between a pair of inductively coupled loop resonators in the presence of a conducting…”
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Analytical formulation for the capacitance of 3D square split ring resonators by Vallecchi, A, Stevens, C, Shamonina, E

“…An approximate analytical expression is derived for the equivalent capacitance of three-dimensional (3D) singly split ring resonators (SRRs) with square cross…”
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Intertwined spirals for metasurfaces and high impedance surfaces by Vallecchi, A., Schuchinsky, A.

“…A broad class of metasurfaces comprised of periodic arrays of interwoven multifilar spiral shaped strips and slots in conducting screens has been developed…”
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Low Profile Fully Planar Folded Dipole Antenna on a High Impedance Surface by Vallecchi, A., De Luis, J. R., Capolino, F., De Flaviis, F.

“…A fully planar antenna design incorporating a high impedance surface (HIS) is presented. The HIS is composed by a periodic array of subwavelength…”
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Demonstration of Superdirectivity for PCB Split Ring Dimers by Yan, J, Radkovskaya, A, Vallecchi, A, Stevens, CJ, Shamonina, E

“…We have designed and tested a Metamaterial Superdirective Antenna (MSA). The MSA was fabricated using PCB technique and comprised a pair of split ring…”
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Reconfigurable metasurface comprised of dogbone shaped conductor pairs by Vallecchi, A., Schuchinsky, A., Capolino, F.

“…A reconfigurable metasurface (MS) composed of a periodic array of dogbone shaped conductor pairs and embedded varactor diodes is analyzed with the aid of a…”
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Broad Band Full Scan Coverage Dual Polarised Spherical Conformal Phased Array by Vallecchi, A., Biffi Gentili, G.

“…Spherical conformal phased arrays of spiral antennas are proposed for obtaining full scan coverage and polarisation agility over a broad band. The spiral…”
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Equivalent Transmission Line Model With a Lumped X-Circuit for a Metalayer Made of Pairs of Planar Conductors by Capolino, F., Vallecchi, A., Albani, M.

“…We present an equivalent X-shaped lumped circuit network to be interposed in the transmission line (TL) modelling reflection and transmission through a…”
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Planar square and diamond microstrip patch array antennas for dual-polarization operation by Vallecchi, A.

“…Two compact low-cost planar microstrip array antennas devised to achieve dual-polarization capability are presented. The arrays are composed of five square…”
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EM characterization of Raspberry-like nanocluster metamaterials by Vallecchi, A, Albani, M, Capolino, F

“…This work investigates certain electromagnetic (EM) properties of metamaterials formed by densely arrayed nanoclusters of plasmonic nanoparticles. An…”
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