Results 21 to 30 of about 803,402 (286)
Metasurface Augmented Lens Antennas
2022 International Workshop on Antenna Technology (iWAT), 2022 In this paper the theoretical methodology of lens antennas augmented with metasurfaces is proposed and demonstrated with a 28 GHz 2D Luneburg lens. The paper presents details on a method of images to design a metasurface augmenting a lens antenna. The cases of PEC reflector and metasurface reflector are considered and a 28 GHz Luneburg lens has been ...
Zelenchuk, Dmitry, Alali, Bader
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Geodesic Lens Antennas for 5G and Beyond
IEEE Communications Magazine, 2022 This article summarizes the recently discovered opportunities of geodesic lenses for producing high-performing antennas for 5G/6G communications. First, we explain the operation of these lenses based on Geometrical Optics with rays that follow “the shortest optical path” on the geodesic surface.
Quevedo-Teruel, Oscar +6 more
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Dielectric Lens Antennas [PDF]
, 2015 Dielectric lens antennas are attracting a renewed interest for millimeterand submillimeter-wave applications where they become compact, especially for configurations with integrated feeds usually referred as integrated lens antennas. Lenses are very flexible and simple to design and fabricate, being a reliable alternative at these frequencies to ...
Fernandes, C. A. +2 more
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Double U-slots patch antenna for tri-band wireless systems [PDF]
, 2010 File shown is the pre-print version of the published paper, with the title "Connected u-slots pathch antenna for WiMAX applications"ABSTRACT: A compact microstrip patch antenna with two U-slots shape is presented.
AbuTarboush, HF +11 more
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Minimum Lens Size Supporting the Leaky-Wave Nature of Slit Dipole Antenna at Terahertz Frequency
International Journal of Antennas and Propagation, 2016 We designed a slit dipole antenna backed by an extended hemispherical silicon lens and investigated the minimum lens size in which the slit dipole antenna works as a leaky-wave antenna.
Niamat Hussain +3 more
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International Journal of Antennas and Propagation, 2011 This paper examines the binary Fresnel zone plate (FZP) lens frequency-harmonic and space-resolution focusing, and its application as a FZP lens antenna.
Hristo D. Hristov
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Size reduction of a conical horn antenna loaded by multi‐layer metamaterial lens
IET Microwaves, Antennas & Propagation, 2022 In this paper, a conical horn antenna in the presence of a metamaterial lens in the X‐band is introduced and fabricated. The annular metamaterial lens is located at the aperture of a shortened horn antenna, whose length is half the length of the ...
Atefeh Sedaghat, Farzad Mohajeri
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Физика волновых процессов и радиотехнические системы, 2021 The results of research on the layout of the antenna array for a promising cellular base station in the frequency range 1,8–1,88 GHz, which includes a linear antenna array of 12 slotted elements with rectangular directors, the diagram – forming scheme of
Alexander A. Bolkunov +6 more
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IEEE Access, 2022 Radar-based algorithms for electromagnetic (EM) imaging are developed based on the assumption that EM has a local planar wave front inside the imaging domain.
Azin S. Janani +3 more
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Synthesis of a Luneburg lens with a flat surface using quasi-conformal transformation optics
Физика волновых процессов и радиотехнические системы, 2020 In modern systems of radiolocation, navigation and communication, the requirements for antennas are becoming higher requirements every year, namely: operation in a wide frequency range, the ability to change of direction of the main lobe of the radiation
Andrey V. Lazarev +3 more
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