Radiation Performance Synthesis for OAM Vortex Wave Generated by Reflective Metasurface

Zhang, Di; Cao, Xiangyu; Yang, Huanhuan; Gao, Jun

doi:10.1109/access.2018.2839099

Cited by 22 publications

(14 citation statements)

References 21 publications

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“…The simplest one-bit code can be realized by the reflection phases 0 • and 180 • . A one-bit coding metasurface was proposed to generate vortex beams in Reference [61]. The elementary cell is composed of a metallic patch and a metallic ground plane printed on the two faces of a dielectric substrate.…”

Section: Reflective 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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Section: Reflective Metasurfacesmentioning

confidence: 99%

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

et al. 2020

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“…Digital or coding meta-elements or quantization of reflection/transmission parameters instead of complex medium properties attracted the attention of the community from microwave to optical. Using coding metamaterial schemes proposed in optical regime [19] one can also investigate diversified applications of medium/surface engineering at radio regime.…”

Section: Meta-element Synthesis and Phase Quantizationmentioning

confidence: 99%

“…A unique concept of generating OAM vortex beam using a single circularly polarized MSA was reported in [18]. Also, recent work presented in [19] demonstrates the comprehensive radiation pattern synthesis of reflective phased surfaces.…”

Section: Introductionmentioning

confidence: 99%

Phase Quantized Metasurface Reflectors for X-band Laguerre Gaussian Vortex Beam Generation

Swain¹,

Mishra²

2018

RADIOENGINEERING

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From last two decades, there is an exponential growth in consumption of available bandwidth in the radio frequency spectrum. To challenge this issue, improvement in channel capacity is getting huge research attention. Laguerre-Gaussian vortex beams are one of the solutions to challenge so-called Multi-Input-Multi-Output (MIMO) technology. However, designing compact portable antennas to generate vortex beams at radio frequencies is still a challenge. We proposed two metasurface reflector models (track and sector-wise distribution) based on 3-bit phase quantized meta-element analysis to generate Orbital Angular Momentum (OAM) vortex modes. A microstrip antenna is used as a feeding element instead of the conventional horn to reduce overall reflector size. Simulated E-field distribution clarifies the spatial vortex mode behavior at X-band. Experimental results of fabricated prototypes at 9.5 GHz, 10 GHz, and 10.5 GHz agree with simulated far-fields which indicate a broadband characteristic.

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“…Since orbital angular momentum (OAM)characteristics of the optical vortex beam was proposed by Allen et al in 1992, OAM has been substantially studied [1][2][3][4], which has been also expanded from optical regions to low-frequency radio domain [5,6]. The wavefront of an electromagnetic (EM) wave carrying OAM rotates around the transmission axis.…”

Section: Introductionmentioning

confidence: 99%

An Inner- and Outer-Fed Dual-Arm Archimedean Spiral Antenna for Generating Multiple Orbital Angular Momentum Modes

et al. 2019

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Orbital angular momentum (OAM) beams have attracted great attention owing to their excellent performances in imaging and communication. In this paper, a dual-arm Archimedean spiral antenna (DASA) is proposed to generate multiple OAM states with positive and negative values by feeding at the inner and outer ends, respectively. The topological charge of radiated vortex waves is reconfigurable by tuning the operating frequency. Dual-mode OAM states are generated at different working frequencies (l = ±1 at 3 GHz, l = ±2 at 4 GHz, and l = ±3 at 4.8 GHz). Both the simulation and measurement results demonstrate that OAM beams can be generated effectively by the DASA. In addition, a conical cavity is used to increase the gain of the proposed DASA for more than 5 dBi in comparison to the traditional cylindrical cavity. Furthermore, the qualities of the generated OAM modes by the proposed DASA have been evaluated at different operating frequencies of 3 GHz, 4 GHz, and 4.8 GHz, respectively. The OAM modes purities of l = −1, −2, −3, 1, 2, and 3 are predominate with the proportion of about 81%, 70%, 74%, 78%, 77%, and 75%, respectively. Our results demonstrate that the proposed DASA has great potentials in OAM multiplexing communication systems.

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Radiation Performance Synthesis for OAM Vortex Wave Generated by Reflective Metasurface

Cited by 22 publications

References 21 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

Phase Quantized Metasurface Reflectors for X-band Laguerre Gaussian Vortex Beam Generation

An Inner- and Outer-Fed Dual-Arm Archimedean Spiral Antenna for Generating Multiple Orbital Angular Momentum Modes

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