Results 21 to 30 of about 2,524 (232)
Multibeam by Metasurface Antennas
IEEE Transactions on Antennas and Propagation, 2017 We explore various possibilities for designing multibeam antennas using a single metasurface (MTS) aperture. Both single-source and multisource feeding schemes are considered. For the single-source case, two approaches are investigated. In the first one, the MTS aperture is divided into several angular sectors, each one devoted to the formation of a ...
David Gonzalez-Ovejero +3 more
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3D Conductive Polymer Printed Metasurface Antenna for Fresnel Focusing
Designs, 2019 We demonstrate a 3D printed holographic metasurface antenna for beam-focusing applications at 10 GHz within the X-band frequency regime. The metasurface antenna is printed using a dual-material 3D printer leveraging a biodegradable conductive polymer ...
Okan Yurduseven +4 more
doaj +1 more source
Metasurface Antennas: Design and Performance
IEICE Transactions on Communications, 2019 This paper gives an overview on the design process of modulated metasurface (MTS) antennas and focus on their performance in terms of efficiency and bandwidth. The basic concept behind MTS antennas is that the MTS imposes the impedance boundary conditions (IBCs) seen by a surface wave (SW) propagating on it.
FAENZI, Marco +2 more
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Downlink Beamforming for Dynamic Metasurface Antennas
IEEE Transactions on Wireless Communications, 2023 <p>In this work, we study the dynamic metasurface antennas (DMA) for use in the transmission of wireless communication signals instead of conventional metallic antennas. DMA belongs to a family of metamaterials, which allow their properties to be reconfigured in real-time. The reconfiguration of DMA is mostly hindered by the associated Lorentzian
Seraphin F. Kimaryo, Kyungchun Lee
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Design of dual frequency antenna with gain enhancement effect for microwave power transmission [PDF]
AIP AdvancesThis paper proposes a method for enhancing antenna gain based on a zero-refractive-index metasurface, which can improve the gain of antennas under bending conditions and mitigate the gain reduction caused by deformation in flexible antennas.
Wenxiong Peng +5 more
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Electronic Beam-Scanning Antenna Based on a Reconfigurable Phase-Modulated Metasurface
Sensors, 2022 Metasurfaces (MSs) have enabled the emergence of new ideas and solutions in the design of antennas and for the control of electromagnetic waves. In this work, we propose to design a directional high-gain reconfigurable planar antenna based on a phase ...
Zakaria Zouhdi +2 more
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Designing Metasurfaces to Manipulate Antenna Radiation
2021 XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), 2021 Designer manipulation of light at the nanoscale is key to several next-generation technologies, from sensing to optical computing. One way to manipulate light is to design a material structured at the sub-wavelength scale, a metamaterial, to have some desired scattering effect.
Capers, James R +3 more
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Programmable Metasurface Antenna for Electromagnetic Torso Scanning [PDF]
IEEE Access, 2020 A wideband beam-switching metasurface antenna using programmable unit-cells is proposed for electromagnetic torso scanning. The design aims at changing the intensity of the electric field inside the torso without any mechanical movements and thus enables fast electronic scanning of the torso.
Amin Darvazehban +2 more
openaire +5 more sources
Frontiers in Materials, 2023 Metasurface antennas have been proposed for computational imaging (CI) systems, which can reconstruct images without using mechanical scanning or large antenna arrays. In a CI system based on metasurface antennas, a variety of different radiation fields,
Tong Wang +4 more
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A Metasurface-Based MIMO Antenna for 5G Millimeter-Wave Applications
IEEE Access, 2021 This work presents a 4-element multiple-input multiple-output (MIMO) antenna with a single layered metasurface array for fifth generation (5G) millimeter-Wave (mm-Wave) communication systems. Each MIMO antenna element is composed of a $1\times 2$ array
Saba Tariq +3 more
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