Manipulation of main lobe number and azimuth angle of terahertz-transmitted beams by matrix-form-coding metasurface

Fang, Bo; Bie, Xun; Yan, Zhigang; Gan, Haiyong; Li, Chenxia; Hong, Zhi; Jing, Xufeng

doi:10.1007/s00339-019-2946-5

Cited by 5 publications

(1 citation statement)

References 39 publications

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“…Recently, convolution operations on coding metasurfaces were put forward to improve the control ability and realize arbitrary radiation angle in the upper space using 2-bit coding metasurfaces [23]. Furthermore, a matrix-form-coding metasurface was proposed to flexibly control the main lobes number and azimuth angle of terahertz-transmitted beams [24]. Meanwhile, addition theorem on complex codes was presented, when two different coding sequences with different functions were added together via this addition theorem, and the combined coding sequence could directly generate the two functions simultaneously without generating any new functions [25].…”

Section: Introductionmentioning

confidence: 99%

Design of Dual-Beam Reflection Based on 2-Bit Coding Metasurfaces

Hao¹,

Zhang²,

Wei³

et al. 2020

PIER M

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In general, a single beam reflection can be realized by 2-bit coding metasurfaces. In order to obtain multi-beam reflection, a design method for coding sequence based on 2-bit coding metasurfaces is proposed, which can manipulate the direction of reflected beams by 2-bit addition rule and control the number of reflected beams by addition theorem on complex codes. This method simplifies the design process of coding sequence, and the direction and number of multi-beams can be flexibly designed. In this paper, the design of dual-beam reflection is taken as an example to illustrate the design process of coding sequence. Both simulation and measurement results show that the designed metasurface realizes the dual-beam reflection, and the direction of reflected beams is consistent with expectations. The proposed method is of great significance for the design of multi-beam reflection based on coding metasurfaces.

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Section: Introductionmentioning

confidence: 99%

Design of Dual-Beam Reflection Based on 2-Bit Coding Metasurfaces

Hao¹,

Zhang²,

Wei³

et al. 2020

PIER M

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Frequency‐Polarization‐Multiplexed Single‐Layer Coding Metasurface for Independent Control of Four‐Channel Wavefront

Dong

Zhu

et al. 2021

Annalen der Physik

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Driven by the increasing demands for high integrations and large information capacities, the low‐profile and multifunctional coding metasurfaces have drawn much attention. Here, a novel, single‐layer, low‐profile, and multifunction coding metasurface based on frequency and polarization multiplexing is proposed. Numerical and experimental results demonstrate that the proposed coding metasurface can achieve the functions of four‐channel wavefront manipulation including beam splitting, abnormal deflection, vortex beam generation, and radar cross section (RCS) reduction at two operating frequencies under both linearly orthogonally polarized wave excitations. Owing to the high‐efficiency, low‐profile, and multiple functions’ characteristics, the proposed coding metasurface suggests potential applications in the fields of radar detections, satellite communications, and high integration of electromagnetic (EM) systems.

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