Photon Spin Hall Effect-Based Ultra-Thin Transmissive Metasurface for Efficient Generation of OAM Waves

Akram, Muhammad Rizwan; Bai, Xudong; Jin, Ronghong; Vandenbosch, Guy A. E.; Premaratne, Malin; Zhu, Weiren

doi:10.1109/tap.2019.2905777

Cited by 171 publications

(52 citation statements)

References 41 publications

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“…The structure can deflect the transmitted beam by 22.99 • . The simulation software CST is used for full-wave simulation and the periodic structure simulation [24][25][26][27][28] is used for calculation, the distribution of electric field is shown in Figures 5A,B shows the far-field 3D distribution map at 32 GHz; we can see that the vertical incident electromagnetic wave deflects by 22.99 • , which is consistent with the theoretical results. When the center frequency is 30 and 34 GHz, the simulation results are shown in Figures 5E,F,I,J, and the deflection angles are all close to the theoretical calculation.…”

Section: Resultssupporting

confidence: 74%

Control Electromagnetic Waves Based on Multi-Layered Transparent Metasurface

et al. 2019

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Metasurface was presented to be the two-dimensional analogs of metamaterials that regulate the beam by adjusting the phase and amplitude of the wavefront. By properly designing and arranging the metasurface elements to form an array, the singularity of the metasurface to the propagation direction of the electromagnetic wave beam can be controlled; such unique electromagnetic properties offer additional opportunities to innovate new antennas. In this paper, we present the design and numerical simulation of the multi-layered microwave metasurface. The structure is designed to control the phase change of the transmission wave by changing the size of the multi-layered transparent microwave metasurface unit. Numerical simulation results show that the specific degree deflection of the electromagnetic wave is achieved in the microwave band. The design expands the application of phase gradient metasurface in the microwave field and provides a new method for metasurface electromagnetic beam steering.

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Section: Resultssupporting

confidence: 74%

Control Electromagnetic Waves Based on Multi-Layered Transparent Metasurface

et al. 2019

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“…A subwavelength scatterer based on photon spin Hall effect (PSHE) to generate high efficiency OAM waves was proposed in Reference [73]. The proposed unit cell consists of two double-headed arrows printed on the top and bottom of the dielectric substrate (Figure 12b).…”

Section: Transmissive Metasurfacesmentioning

confidence: 99%

A Review of Orbital Angular Momentum Vortex Beams Generation: From Traditional Methods to Metasurfaces

et al. 2020

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In this paper, we review the generation of vortex beams carrying orbital angular momentum in the microwave domain. We firstly present the theory of Laguerre–Gaussian beams where it is demonstrated that they carry such type of momentum. We further provide an overview of the classical methods used to generate orbital angular momentum vortex beams, which rely on two main methods; plane wave to vortex wave conversion and direct generation using radiating antennas. Then, we present recent progress in the physics of metasurfaces devoted to the generation of vortex beams with a discussion about reflective and transmissive metasurfaces for plane wave to vortex wave conversion as well as methods to reduce the intrinsic divergence characteristics of vortex beams. Finally, we conclude on this rapidly developing research field.

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“…Here, the topological charge l is the number of twists of the wavefront from 0 to 2π. the OAM vortex beam with a topological charge of l = 1 can be generated by a spiral phase profile ranging from 0 to 2π with a gradient phase increment along the azimuthal direction [40]. A circular array with continuous gradient phase increment and uniform amplitude is an ideal scheme to generate an OAM wave.…”

Section: Generation Of Multi-order Orbital Angular Momentum Vortex Beamsmentioning

confidence: 99%

Tunable Beam Steering, Focusing and Generating of Orbital Angular Momentum Vortex Beams Using High-Order Patch Array

et al. 2019

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In this paper, a tunable patch array based on high-order is proposed at the frequency of 300 GHz, achieving active controllable beam steering, focusing and generation of orbital angular momentum vortex beams. It has been demonstrated that the patch array can achieve wide beam scanning angle by controlling the phase of array elements with tunable phase shifters. Meanwhile, beam focusing on the specified position can also be realized by phase modulation of array elements based on the focusing theory. In addition, we also designed a patch array to generate vortex beams with multiple topological charges by high-order modes. The performances show that the patch antenna array we designed has a good application prospect.

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Photon Spin Hall Effect-Based Ultra-Thin Transmissive Metasurface for Efficient Generation of OAM Waves

Cited by 171 publications

References 41 publications

Control Electromagnetic Waves Based on Multi-Layered Transparent Metasurface

Control Electromagnetic Waves Based on Multi-Layered Transparent Metasurface

A Review of Orbital Angular Momentum Vortex Beams Generation: From Traditional Methods to Metasurfaces

Tunable Beam Steering, Focusing and Generating of Orbital Angular Momentum Vortex Beams Using High-Order Patch Array

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