Polarization-Controlled Shared-Aperture Metasurface for Generating a Vortex Beam With Different Modes

Guan, Ling; He, Zi; Ding, Dazhi; Yu, Yefeng; Zhang, Wu; Chen, Rushan

doi:10.1109/tap.2018.2867028

Cited by 34 publications

(14 citation statements)

References 26 publications

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“…In 2018, Guan et al introduced the shared-aperture concept into metasurfaces for generating OAM vortex beams with different modes. This polarization-controlled shared-aperture metasurface achieved higher aperture efficiency than the conventional shared-aperture schemes [32]. In addition, metasurfaces are also used for OAM detection [33].…”

Section: Rotating Parabolicmentioning

confidence: 97%

Research Status and Prospects of Orbital Angular Momentum Technology in Wireless Communication

Zheng¹,

Chen²,

Ji³

et al. 2020

PIER

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It becomes more and more challenging to satisfy the long-term demand of transmission capacity in wireless networks if we limit our research within the frame of traditional electromagnetic wave characteristics (e.g., frequency, amplitude, phase and polarization). The potential of orbital angular momentum (OAM) for unleashing new capacity in the severely congested spectrum of commercial communication systems is generating great interest in wireless communication field. The OAM vortex wave/beam has different topological charges, which are orthogonal to each other. It provides a new way for multiplexing in wireless communications. Electromagnetic wave or synthetic beam carrying OAM has a spiral wavefront phase structure, which may provide a new degree of freedom or better orthogonality in spatial domain. In this paper, we introduce the fundamental theory of OAM. Then, OAM generation and reception methods are equally demonstrated. Furthermore, we present the latest development of OAM in wireless communication. We further discuss the controversial topic "whether OAM provides a new degree of freedom" and illustrate our views on the relationship between OAM and MIMO. Finally, we suggest some open research directions of OAM.

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Section: Rotating Parabolicmentioning

confidence: 97%

Research Status and Prospects of Orbital Angular Momentum Technology in Wireless Communication

Zheng¹,

Chen²,

Ji³

et al. 2020

PIER

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“…The first experiment of the OAM‐wave transmission in the radio domain was reported in 7 . At present, approaches for OAM waves generation in the radio frequency domain include using spiral phase plates (SPP), 8 spiral phase reflector, 9,10 uniform circular array (UCA), 11,12 and metasurface 13‐15 . However, as for the OAM antennas using SPP or spiral phase reflector, the OAM mode l cannot be adjusted once the SPP and spiral phase reflector were implemented.…”

Section: Introductionmentioning

confidence: 99%

“…7 At present, approaches for OAM waves generation in the radio frequency domain include using spiral phase plates (SPP), 8 spiral phase reflector, 9,10 uniform circular array (UCA), 11,12 and metasurface. [13][14][15] However, as for the OAM antennas using SPP or spiral phase reflector, the OAM mode l cannot be adjusted once the SPP and spiral phase reflector were implemented. Using metasurfaces to realize wavefront manipulation can generate OAM waves and achieve high gain; however, the general metasurfaces cannot change the OAM modes once the metasurfaces are fabricated.…”

mentioning

confidence: 99%

“…Using metasurfaces to realize wavefront manipulation can generate OAM waves and achieve high gain; however, the general metasurfaces cannot change the OAM modes once the metasurfaces are fabricated. Metasurfaces have also been proposed to effectively generate and detect multiple OAM modes and multiple vortex beams in radio frequency domain [14][15][16] OAM metasurface antennas suffer from the problems of feed shade and large size. Utilizing uniform circular array to achieve OAM waves can easily control the OAM modes and optimize the patterns, so it was widely studied 12,17,18 Reconfigurable antennas provide a good solution for eliminating the limitations of a single type of antenna, improving system performance, reducing system weight and footprint.…”

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confidence: 99%

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A single fed wideband mode‐reconfigurable OAM metasurface CP antenna array with simple feeding scheme

Huang

Zhang

2020

Int J RF Microw Comput Aided Eng

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In this paper, a low‐profile mode reconfigurable orbital angular momentum (OAM) circular polarization (CP) array antenna is presented, which consists of 2 × 2 elements and a single feed network. Each element is a metasurface subarray composed of 4 × 4 square patchs. The vias in the subarray produces 90° phase difference between x‐ and y‐ polarizations, and CP is realized. Both the 90° phase‐shifting reconfigurable feed network and broadband 180° phase shift by the mirror images are used to generate the OAM helical phase. The OAM modes l can be dynamically switched between l = +1 and l = −1 by controlling operation states of p‐i‐n diodes in the feed network. The CP and OAM impedance bandwidths are 13.3% (from 5.8 to 6.6 GHz). The peak gains for the two modes are 9.4 dBi. The developed array antenna has the following advantages of the least pin diode number, high gain, small size, lowest divergence angle, wideband CP, low cross‐polarization and low fabrication cost. Therefore, the proposed antenna is very promising for modern high‐speed and large capacity wireless communication systems.

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“…In most recently, an OAM mode selection method based on the discrete Fourier transform (DFT) feed network and channel matrix analysis is presented, which is an inspiring approach for multiple OAM modes vortex wave transmission and reception [31]. Metasurfaces have also been proposed to effectively generate and detect multiple OAM modes and multiple vortex beams in radio frequency domain [28], [29], [32]- [36].…”

Section: Introductionmentioning

confidence: 99%

Variable Scale Aperture Sampling Reception Method for Multiple Orbital Angular Momentum Modes Vortex Wave

Feng

Liang

2019

IEEE Access

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In this paper, we propose a kind of variable scale aperture sampling reception (VSASR) method for multiple orbital angular momentum (OAM) modes vortex wave reception and demodulation. The VSASR method overcomes the restrictions of equal interval OAM modes which is necessary for the existing partial aperture sampling reception method for keeping the OAM modes orthogonality. Thus, it has higher OAM modes multiplexing utilization efficiency than the partial aperture sampling reception method at the same reception aperture. It is also well for vortex wave consistency reception. Although the orthogonality is a little damaged and there are some other crosstalk OAM modes, the main transmission OAM modes can be kept and distinguished by introducing some specific digital signal processing methods. Finally, for a verification of the presented VSASR method, several reflective metasurface antennas working at 10 GHz are designed, fabricated, and measured to generate different OAM vortex waves. Both the electromagnetic simulation and the measurement experiments are consistent well with the proposed theory analysis, which demonstrates the correctness and effectiveness of the proposed method. INDEX TERMS Orbital angular momentum (OAM), variable scale sampling reception, multiple OAM vortex waves, reflective metasurface generator, reception and demodulation.

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Polarization-Controlled Shared-Aperture Metasurface for Generating a Vortex Beam With Different Modes

Cited by 34 publications

References 26 publications

Research Status and Prospects of Orbital Angular Momentum Technology in Wireless Communication

Research Status and Prospects of Orbital Angular Momentum Technology in Wireless Communication

A single fed wideband mode‐reconfigurable OAM metasurface CP antenna array with simple feeding scheme

Variable Scale Aperture Sampling Reception Method for Multiple Orbital Angular Momentum Modes Vortex Wave

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