Beam steering metasurface

Author: aomj

August undefined, 2024

WebApr 12, 2024 · Beam-scanning antennas are employed in a wide range of applications, such as in satellite communications and 5G networks. Current commercial solutions rely mostly on electronically reconfigurable phased arrays, which require complex feeding networks and are affected by high losses, high costs, and are often power-hungry. In this paper, a … WebMar 17, 2024 · Abstract: In this paper, we demonstrate a beam-steering antenna using a fluidically programmable metasurface (FPMS). The proposed FPMS-based antenna …

Active terahertz beam steering based on mechanical deformation …

WebJun 11, 2024 · Optical phased arrays (OPAs) are essential optical elements in applications that require the ability to manipulate the light-wavefront, such as beam focusing and light … WebDec 28, 2024 · In this work, we report the realization of multifunctional spintronic-metasurface emitters, which allow simultaneous beam-steering and full polarization … 顔文字アプリ無料

A Liquid Crystal Based Dynamic Metasurface for Beam Steering …

WebApr 14, 2024 · It can be seen that the space–time-coding metasurface with the equivalent 3-bit phases has better performance of beam steering at 2 THz, in which the side lobes are much lower than that in the original 2-bit case. Besides, the scattering powers at the harmonic frequencies are well suppressed to ensure the efficiency at the central frequency. WebAug 17, 2024 · The metasurface platform allows for application of four sets of independent radio-frequency signals to each meta-molecule, which are optimized to excite the output … WebJan 4, 2024 · The most obvious potential application of such active metasurfaces is for beam steering in next-generation wireless communications. As illustrated in Fig. 4a, the variation of output angle... 顔文字イラストかわいい

Highly efficient beam steering with a transparent …

Broadband continuous beam-steering with time …

WebNov 26, 2024 · Abstract. Beam-steering devices, which are at the heart of optical wireless-broadcasting communication links, play an important role in data allocation and … WebJun 10, 2024 · The optimized beam-steering metasurface specifically exhibits a nearly constant directivity when the steering angle varies from 5° to 30°. Furthermore, the optimized nonintuitive reflectance and phase profiles assist in achieving highly directive beam steering when the phase modulation range is <180°, which was previously … 顔文字イラストWebJul 1, 2024 · Metasurfaces are a new class of optical devices based on two-dimensional arrays of subwavelength optical elements, which show promise in applications such as … target omaha news

"WebJun 11, 2024 · Optical phased arrays (OPAs) are essential optical elements in applications that require the ability to manipulate the light-wavefront, such as beam focusing and light steering. To miniaturize the optical components, active metasurfaces, especially graphene metasurfaces, are used as competent alternatives. However, the metasurface cannot … " - Beam steering metasurface

Beam steering metasurface

Excitonic Beam Steering in an Active van der Waals Metasurface

WebApr 6, 2024 · SHINING EXAMPLE — A metasurface sample is used for the beam steering with each reflective patch containing thousands of meta-atoms designed to dynamically … WebDec 28, 2024 · In this work, we report the realization of multifunctional spintronic-metasurface emitters, which allow simultaneous beam-steering and full polarization control over a broadband terahertz beam. This is achieved through engineering individual meta-atoms with nanoscale magnetic heterostructures and, thus, implementing microscopical …

Did you know?

WebDownload scientific diagram Illustration of beam steering by a metasurface antenna, with radiation damping included. Logarithmic scale (dB). The parameters for the calculation … WebJun 30, 2024 · The purpose of this Perspective is to assess progress on optical beam steering using dynamically tunable nanoantennas and metasurfaces. Recent results are highlighted, and the state of the field is given a critical look. KEYWORDS: steering phased array plasmonics metasurfaces materials Cited By

WebMay 6, 2013 · Highly efficient beam steering with a transparent metasurface Authors Zeyong Wei 1 , Yang Cao , Xiaopeng Su , Zhijie Gong , Yang Long , Hongqiang Li Affiliation 1 Tongji University, Shanghai 200092, China. PMID: 23669930 DOI: 10.1364/OE.21.010739 Equipment Design Equipment Failure Analysis Manufactured Materials* Refractometry / … WebJan 10, 2024 · Such operation allows steering the reflected beam to different off-normal directions at the same frequency, using the single active metasurface under normal incident illumination. The phase values required for 15°, 30° and 45° beam steering are shown in Fig. 3 a–c and are set by applying the corresponding bias voltage to each column.

WebThe active metasurface device for two-dimensional beam steering was fabricated by using the complementary metal–oxide–semiconductor (CMOS) compatible processes. First, … WebApr 9, 2024 · The active metasurface unit cells consist of asymmetric Gires–Tournois resonators filled with either silicon or hetero-structured materials to leverage on the thermo-optical or electro-optical effects, respectively. ... active beam steering designs for active thermo-optical effect with ultimate performance exceeding 90% have been optimized ...

WebJul 20, 2024 · The reception beam of the metasurface is determined by the gradient phase shifters in each supercell. Hence, the wave is received by the chain, acquires a power gain and is reflected at the...

WebFeb 20, 2024 · We propose a wide-angle beam steering device based on all-dielectric metasurfaces consisting of two symmetrical blazed gratings for optical trapping of … target omaha 72ndWebFeb 1, 2024 · Our Light Control Metasurface (LCM™ ) beam steering devices significantly reduce the complexity, cost, and size of 3D sensing systems while improving both … target nuk sippy cupWebNov 27, 2024 · In this work, we present an electrochemically switchable metasurface for beam steering where we use the conducting polymer poly(3,4-ethylenedioxythiophene) … 顔文字アプリ人気無料WebApr 14, 2024 · It can be seen that the space–time-coding metasurface with the equivalent 3-bit phases has better performance of beam steering at 2 THz, in which the side lobes … target omaha neWebFeb 25, 2024 · Nyquist metasurface antennas can realize high performance without costly and power hungry phase shifters, making them a compelling technology for future … We would like to show you a description here but the site won’t allow us. target omahaWebApr 11, 2024 · This maintains the continuous beam-steerability in the azimuth plane with a constant angle in the elevation plane. The measured radiation patterns in the azimuth plane for Feed 1 and Feed 2 are shown in Figure 4. The antenna system has a gain varying from 20.5 to 21.8 dBi with a beam-steering from −2° to 60° in the azimuth plane. 顔文字イラスト手書きWebMay 6, 2013 · We propose an ultra-thin planar metasurface with phase discontinuities for highly efficient beam steering. The effect benefits from the broadband transparency and … target onalaska wi