Results 101 to 110 of about 503,018 (197)

Luneberg lens dissipation properties for electromagnetic field of circular polarization

Физика волновых процессов и радиотехнические системы, 2013
The calculated scattering diagram for main and cross-polarization components of Luneburg lens, when a plane wave with a circularly polarized electromagnetic field.
B.A. Panchenko, D.V. Denisov
doaj  

Broadband metasurface Luneburg lens antenna based on glide-symmetric bed of nails

, 2017
A broadband metasurface Luneburg lens based on glide-symmetric bed of nails is designed. First, the Luneburg lens was re-shaped using quasi-conformal transformation optics.
Ghasemifard, Fatemeh,, Kexin Liu, Oscar Quevedo-Teruel, Fatemeh Ghasemifard, Liu, Kexin,, Quevedo-Teruel, Oscar,   +5 more
core   +1 more source

Resonant-type Luneburg lens for broadband low-frequency focusing

In this paper, a novel structural Luneburg lens with local resonators is proposed. This lens allows the realization of subwavelength focusing in low-frequency range.
Hao Guo, Zhaoyong Sun, Chuanxing Bi, Xuxu Zhuang, Liuxian Zhao   +4 more
core   +1 more source

Sound Focusing by Acoustic Luneburg Lens

, 2014
Luneburg lens is a gradient index lens that focuses the incoming wave on the opposite side of the lens without aberration. We developed a two-dimensional acoustic Luneburg lens by changing the refractive index of the medium in the lens. It has a cylindrical shape and is composed of 701 aluminum columns with various radii of less than 1cm.
openaire   +2 more sources

A Wideband GRIN Dielectric Lens Antenna for 5G Applications. [PDF]

Micromachines (Basel), 2023
Aljaloud K, Aladadi YT, Alkanhal MAS, Abdulkawi WM, Hussain R.   +4 more
europepmc   +1 more source

Double-layer geodesic and gradient-index lenses. [PDF]

Nat Commun, 2022
Chen Q, Horsley SAR, Fonseca NJG, Tyc T, Quevedo-Teruel O.   +4 more
europepmc   +1 more source

Design of a planar gradient-index dielectric lens for arbitrary point-to-point beam focusing using critical-angle theory. [PDF]

Sci Rep
Taskhiri MM, Moradi M, Fakhte S.
europepmc   +1 more source

Biomimetic Design and Extrusion-Based 3D Printing of TiO₂ Filled Composite Sphere Scaffolds: Energy-Absorbing and Electromagnetic Properties. [PDF]

Biomimetics (Basel)
Akhmatnabiev M, Petrov A, Timoshenko M, Sychov M, Diachenko S, Arsentev M, Bakulin A, Skorb E, Nosonovsky M.   +8 more
europepmc   +1 more source

A lithography-free approach to polaritonic Luneburg lenses. [PDF]

Nat Commun
Cui Z, Gong Y, Yu W, Xia S, He Z, Tang X, Zheng B, Wang H, Ma W, Zhang Y, Chen H, Wu Y.   +11 more
europepmc   +1 more source