Metasurface-based conformal linear-to-circular polarization converter for emerging wireless applications

Yadav, Vinit Singh; Kundu, Debidas; Kaushik, Brajesh Kumar; Patnaik, Amalendu

doi:10.1016/j.ijleo.2023.171553

Optik

2024

DOI: 10.1016/j.ijleo.2023.171553

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Metasurface-based conformal linear-to-circular polarization converter for emerging wireless applications

Vinit Singh Yadav,

Debidas Kundu,

Brajesh Kumar Kaushik

et al.

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2024

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Cited by 2 publications

References 25 publications

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A butterfly metasurface with efficient multi-functional polarization conversion operating in the Ku-Ka band

Zhang,

Song

et al. 2024

Sci Rep

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A highly efficient and multi-functional butterfly polarization conversion metasurface is proposed for the Ku-Ka frequency range, designed to reduce the radar cross-section. The suggested converter enables dual frequency bands linear-to-cross (LX) and linear-to-circular (LC) polarization transformations. The efficiency of cross-polarization conversion exceeds 90% over the frequency ranges of 14.57–16.30 GHz and 25.70–37.03 GHz, with relative bandwidths of 11% and 36%, respectively. Reflections of left-hand (LHCP) and right-hand circularly polarized (RHCP) waves are realized within the frequency ranges of 17.78–25.31 GHz and 37.38–37.73 GHz, with relative bandwidths of 35% and 0.9%. The oblique incidence significantly affects the metasurface conversion performance, and the proposed model manifests angular robustness up to 60°. Additionally, the butterfly metasurfaces are deployed in a triangular chessboard configuration to achieve radar cross section (RCS) reduction spanning the frequency bands of 14–15.17 GHz, 24.60–35.20 GHz, and 36.30–38 GHz. Drawing from simulation results and test-based validation data, the proposed converter holds promising applications in wireless communication, antenna engineering, and radar stealth.

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A butterfly metasurface with efficient multi-functional polarization conversion operating in the Ku-Ka band

Zhang,

Song

et al. 2024

Sci Rep

View full text Add to dashboard Cite

show abstract

Research on the miniaturization method of the broadband linear-to-circular polarization conversion metasurface based on genetic algorithm

Ma,

Hu,

Zhou

et al. 2024

Opt. Express

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The size of the metasurface unit cell increases with the decrease of its center working frequency (CF). This is not conducive to the integrated design of the metasurface. To address the problem, a miniaturization design method based on genetic algorithm (GA) is proposed. Firstly, an element library is established. By randomly selecting and combining these elements, various structures are generated as the initial population of GA. Secondly, a Python-CST joint simulation program is constructed to automatically model the metasurface unit cells and extract their electromagnetic parameters. Finally, after multiple iterations of optimization, the optimized unit cell is obtained. This paper takes the transmissive-type linear-to-circular polarization conversion metasurface (LTCPCM) as a research object. The simulation results show that the size of the designed unit cell is only 0.18 λ of the CF (3.86 GHz). The LTCPCM exhibits broadband and wide-angle characteristics, with a fractional bandwidth (FB) of 71% (incident angle θ = 0°) and an angular stability (AS) of 45°. The experimental validation and the simulation result are consistent, proving the effectiveness of the proposed method. The research results can provide a reference for further miniaturization design of metasurface unit cells.

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Metasurface-based conformal linear-to-circular polarization converter for emerging wireless applications

Cited by 2 publications

References 25 publications

A butterfly metasurface with efficient multi-functional polarization conversion operating in the Ku-Ka band

A butterfly metasurface with efficient multi-functional polarization conversion operating in the Ku-Ka band

Research on the miniaturization method of the broadband linear-to-circular polarization conversion metasurface based on genetic algorithm

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