Controlling Conical Beam Carrying Orbital Angular Momentum with Transmissive Metasurface

Sun, Jun; Chen, Ke; Qu, Kai; Zhao, Junming; Jiang, Tian; Feng, Yijun

doi:10.1155/2021/9951644

Cited by 3 publications

(3 citation statements)

References 37 publications

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“…In today's communication systems, humans, vehicles, and various moving objects performing unregular movements have become the carriers of satellite-based communication terminals [1][2][3][4][5]. However, this moving characteristic makes it difficult for these terminals to keep relatively still with satellites to have stable access to satellite signals.…”

Section: Introductionmentioning

confidence: 99%

Broadband Polarization-Decoupled Metasurface for Generating Tailored Dual-Polarization Conical Beams

Yang,

Ying,

Sun

2023

International Journal of RF and Microwave Computer-Aided Engine

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Conical beam antenna plays a significant role in providing stable access to satellite signals for moving communication terminals. Although metasurfaces have been used to generate conical beams, most of them can only reflect conical beams with identically distributed and mirror-symmetric phase responses for left-hand circular polarization and right-hand circular polarization, which can hinder the dual-polarization applications of metasurfaces. In this study, a metasurface is designed to independently manipulate dual-polarized excitations in broadband. To achieve the broadband control of conical beams, broadband conditions for both geometric and propagation phases are developed. Differently, metasurface designed in this study consists of three types of distinguishingly shaped elements, which can provide more degree of freedom in dual-polarization broadband design. In addition, a design method is developed for metasurface to generate the cone angle tailorable conical beams. Via fabricating a metasurface following the proposed method, the designed metasurface is verified in theorem, simulation, and experiment that it can generate desired conical beams with tailored divergent angles and phase responses covering a bandwidth from 12.5 GHz to 17 GHz.

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Section: Introductionmentioning

confidence: 99%

Broadband Polarization-Decoupled Metasurface for Generating Tailored Dual-Polarization Conical Beams

Yang,

Ying,

Sun

2023

International Journal of RF and Microwave Computer-Aided Engine

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“…In [1], a low profile wideband CP conical beam antenna with archook-shaped branches is proposed. In [2], a transmissive metasurface method for generating conical beam is put forward. In [3], an open-ended coaxial waveguide aperture antenna for conical beam radiation is proposed.…”

Section: Introductionmentioning

confidence: 99%

Circular Polarization Annular Leaky-Wave Antenna with Conical and Broadside Beams

Ma¹,

Yang²,

Wang³

et al. 2023

Preprint

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In order to properly cover different scenarios, radiation patterns of antennas should be accordingly adjusted before fabrication. However, most antennas are unable to provide both broadside beam and designable conical beam which are usually-used radiation patterns for radio coverage. In this paper, a planar Circular Polarized (CP) annular Leaky-Wave Antenna (LWA) with conical beam is proposed, which is realized on annular Substrate-Integrated Waveguide (SIW). Broadside beam or conical beam could be easily obtained by fabricating the LWA with modified structural parameters. The central operating band is 5.8 GHz. The LWA allows only the -1th spatial harmonic to radiate, while the fundamental wave and other spatial harmonics are suppressed in slow wave mode. In order to validate the design effectiveness, two examples for broadside beam and conical beam radiation are fabricated and measured. The measurement results show good agreement with the simulation results. The proposed LWA presents a promising radiation performance and is a good candidate for wireless communication applications.

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“…In [1], a low-profile wideband CP conical beam antenna with arc-hook-shaped branches is proposed. In [2], a transmissive metasurface method for generating a conical beam is put forward. In [3], an open-ended coaxial waveguide aperture antenna for conical beam radiation is proposed.…”

Section: Introductionmentioning

confidence: 99%

Circular Polarization Annular Leaky-Wave Antenna with Conical and Broadside Beams

Yang

Wang

et al. 2023

Electronics

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In order to properly cover different scenarios, radiation patterns of antennas should be accordingly designed. However, most antennas are unable to provide either broadside beams or designable conical beams, which are the typically used radiation patterns for radio coverage, based on one single-structure format through adjusting parameters before fabrication. In this paper, a planar circular polarized (CP) annular leaky-wave antenna (LWA) is proposed, which is realized on an annular substrate-integrated waveguide (SIW). A broadside beam or a conical beam could be easily obtained through fabricating the LWA with different structural parameters. The operating frequency is 5.75 GHz. The LWA allows only the −1st spatial harmonic to radiate, while the fundamental wave and other spatial harmonics are suppressed in slow wave mode. In order to validate the design effectiveness, two examples for broadside beam and conical beam radiation are fabricated and measured. The measurement results show good agreement with the simulation results. The broadside beam LWA shows a gain of 9.75 dBic and the conical beam LWA with a beam angle of 13° has a gain of 7.93 dBic. The proposed LWA presents promising radiation performance and is a good candidate for wireless communication applications.

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Controlling Conical Beam Carrying Orbital Angular Momentum with Transmissive Metasurface

Cited by 3 publications

References 37 publications

Broadband Polarization-Decoupled Metasurface for Generating Tailored Dual-Polarization Conical Beams

Broadband Polarization-Decoupled Metasurface for Generating Tailored Dual-Polarization Conical Beams

Circular Polarization Annular Leaky-Wave Antenna with Conical and Broadside Beams

Circular Polarization Annular Leaky-Wave Antenna with Conical and Broadside Beams

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