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Electronic beam switching using graphene artificial magnetic conductor surfaces

机译：使用石墨烯人工磁导体表面切换电子束切换

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摘要

This paper presents an electronic reconfigurable pattern control using artificial magnetic conductor (AMC) graphene surfaces for terahertz (THz) applications. The proposed graphene AMC surface consists of modified star-shaped slotted graphene sheets printed on the top and bottom sides of dielectric substrate. Square graphene ring with 1 urn width is used to control the ground plane size of the AMC-surface. The AMC-cell operates at 1.4 THz with wide frequency varying range from 1.05 to 2.2 THz for μ_c changed from 0.1 to 2 eV. The radiated waves from a rectangular dipole antenna backed by graphene AMC surface is deflected from the broadside direction to the end-fire direction. According to the number of unbiased graphene ring rows N_un the beam direction is controlled. The effective area of the proposed graphene-based AMC reflector is increased or decreased through operating these rings, respectively. Biasing graphene means applying a DC voltage value across it corresponding to μ_c = 2 eV, while corresponding to μ_c = 0 eV. Different AMC surfaces arrangements are investigated. For 17×17 AMC unit-cell, the peak gain direction in the y-z plane is θ = 0° for N_(un)=0, θ = ± 16° for N_(un)=A rows,θ = ±65° for N_(un) = 6 rows, and θ = ± 90° for N_(un)= 8 rows. The HPBW is 232°, 236°, and 239° for N_(un)= 4, 6, and 8 unbiased rows, respectively.
机译：本文介绍了一种用于太赫兹（THz）应用的人工磁导体（AMC）石墨烯表面的电子可重新配置模式控制。所提出的石墨烯AMC表面由印刷在介电基板的顶侧和底侧上的修改的星形开槽石墨烯片组成。具有1个URN宽度的方形石墨烯环用于控制AMC表面的接地平面尺寸。 AMC-Cell在1.4THz上运行，宽频变化范围为1.05至2.2THz，μ_c从0.1到2eV变为μ_c。由石墨烯AMC表面背包的矩形偶极天线的辐射波从横向方向偏转到端火方向。根据非偏向石墨烯环行的数量，控制光束方向。通过操作这些环，所提出的基于石墨烯的AMC反射器的有效面积增加或减少。偏置石墨烯意味着在对应于μ_c= 2eV的情况下施加DC电压值，同时对应于μ_c= 0eV。研究了不同的AMC表面布置。对于17×17AMC单位单元，对于N_（UN）= 0，对于N_（UN）= 0，θ=±16°，θ=±16°，θ=±65°，θ= 0°，θ=±65°，θ=±165° n_（un）= 6行，n_（un）= 8行的θ=±90°。对于N_（UN）= 4,6和8行，HPBW分别为232°，236°和239°。

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