Transforming Surface Wave to Propagating OAM Vortex Wave via Flat Dispersive Metasurface in Radio Frequency

Zhang, Youfei; Lyu, Yang; Wang, Haogang; Zhang, Xianmin; Jin, Xiaofeng

doi:10.1109/lawp.2017.2779269

Cited by 43 publications

(24 citation statements)

References 32 publications

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“…Based on the proposed unit cell, a reflective metasurface with 20 × 20 elements is designed to generate vortex beam carrying an OAM mode with topological charge l = 2 at 5.8 GHz. A metasurface composed of ring-surrounded bowtie patch resonators is proposed in [52]. The structure is inspired by the bowtie antenna which has wideband characteristics ( Figure 8b).…”

Section: Reflective Metasurfacesmentioning

confidence: 99%

“…The proposed metasurface generates vortex beams carrying an OAM mode l = 1 in the 8.5 GHz-11.5 GHz frequency range. Due to limitation of unit cell topology, the metasurface in [51] and [52] can only operate under single polarized incident waves. By properly designing the elementary cell pattern (Figure 8d), a polarization-insensitive OAM metasurface is proposed in [54].…”

Section: Reflective Metasurfacesmentioning

confidence: 99%

“…The phase shift of the metasurfaces in [51][52][53][54] can be controlled not only through varying structure parameters to introduce propagation phase, but also through rotation of the orientation of the meta-atom to introduce geometric phase. Compared to propagation phase, geometric phase which is usually called Pancharatnam-Berry (PB) phase is easier to implement.…”

Section: Reflective Metasurfacesmentioning

confidence: 99%

“…(a) Linear polarized (LP) vortex beams[51]. (b) Wideband linear polarized vortex beams[52]. (c) Double-layered unit for wideband vortex beams[53].…”

mentioning

confidence: 99%

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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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Section: Reflective Metasurfacesmentioning

confidence: 99%

Section: Reflective Metasurfacesmentioning

confidence: 99%

Section: Reflective Metasurfacesmentioning

confidence: 99%

“…(a) Linear polarized (LP) vortex beams[51]. (b) Wideband linear polarized vortex beams[52]. (c) Double-layered unit for wideband vortex beams[53].…”

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confidence: 99%

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

et al. 2020

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“…Therefore, how to generate vortex wave effectively becomes one of the most important aspects of OAM-based system. Thus far, the vortex wave can be generated by antenna arrays [10], spiral phase plate [11], helicoidal parabolic antenna [15], circular traveling-wave antenna [16], and metasurfaces [17][18][19][20][21][22][23][24]. Metasurface was used to generate vortex wave because of its ability to manipulate electromagnetic wave flexibly and the advantage of its thin structure [25].…”

Section: Introductionmentioning

confidence: 99%

Reflective Metasurface for Vortex Wave Generating and Divergence Reducing in X-Band

Dong¹,

Sun²,

Gu³

et al. 2018

PIER C

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In this paper, a novel and simple solution for generating vortex electromagnetic wave and reducing divergence simultaneously in a wideband is presented. Based on phase gradient metasurface, we design a metasurface that can convert an ordinary electromagnetic wave into a vortex one and focus the vortex wave in X-band. Double layer rectangular metal patch units of different sizes are arranged in a certain order to compose the metasurface. The phase introduced by the metasurface is superimposed by the vortex phase and focusing phase. Compared to a general vortex wave metasurface, the simulation results show that the divergence of the reflected vortex wave generated by our designed metasurface is dramatically reduced in the frequency range from 8 GHz to 12 GHz. It is indicated that the designed metasurface has a highly efficient focusing effect, and it is also in a good agreement with the theoretical analysis. The proposed reflective metasurface paves an effective way to reduce the divergence of vortex electromagnetic wave for OAM-based system in microwave and radio frequency.

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Generation of Microwave Vortex Beams Using Metasurfaces

Yin¹,

Cui²

2021

Electromagnetic Vortices

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Transforming Surface Wave to Propagating OAM Vortex Wave via Flat Dispersive Metasurface in Radio Frequency

Cited by 43 publications

References 32 publications

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

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

Reflective Metasurface for Vortex Wave Generating and Divergence Reducing in X-Band

Generation of Microwave Vortex Beams Using Metasurfaces

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