Design of high-resolution near-field focusing metasurface lens

Li, Jiang; Wang, Zhu; Ma, Yue; Ran, Xuehong; Hao, Honggang

doi:10.1080/09205071.2021.1934569

Journal of Electromagnetic Waves and Applications

2021

DOI: 10.1080/09205071.2021.1934569

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Design of high-resolution near-field focusing metasurface lens

Jiang Li

Zhu Wang

Yue Ma

et al.

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Cited by 6 publications

(1 citation statement)

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“…Moreover, the focal point of a leakywave-based NFF system as a planar configuration is steered by changing frequency which is not suitable for fixed focal point applications [9]. Furthermore, a number of recent works have presented the design of NFF setups based on metasurface structures [10]- [12].…”

mentioning

confidence: 99%

Ultra-Compact 60-GHz Near-Field Focusing Configuration Using SIW Slot Array Loaded by Transmission Coding Metasurface Lens

Ebrahimzadeh,

Hosseininejad,

Zakeri

et al. 2024

IEEE Trans. Antennas Propagat.

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This paper proposes an ultra-compact Near-field Focusing (NFF) setup at 60 GHz. The proposed configuration is included a planar substrate integrated waveguide (SIW) slot array as a feeder for a three-layer transmissive coded metasurface lens. A comprehensive design methodology is presented, encompassing unit cell design, coded metasurface lens synthesis, and planar slot array design. The transmissive metasurface lens performance is studied and validated by numerical and analytical approaches. Then, the planar slot array design considerations are elaborated, investigating the amplitude and phase of the resulting waves to ensure that quasi-plane waves are produced in the near-field region. Finally, the slot array is employed to illuminate the designed metasurface where the distance between the feeder and metasurface lens is 2 mm (0.4λ), which shows the integrability and being packed of the proposed setup, contrary to the conventional metasurface-based NFF structures. There are fair agreements between analytical, numerical, and measurement methods to verify the presented approach. It turns out that the proposed device can focus waves close to the diffraction limit, which results in a high-resolution efficiency.

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confidence: 99%

Ultra-Compact 60-GHz Near-Field Focusing Configuration Using SIW Slot Array Loaded by Transmission Coding Metasurface Lens

Ebrahimzadeh,

Hosseininejad,

Zakeri

et al. 2024

IEEE Trans. Antennas Propagat.

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Low-cost laser cutting fabricated all-metallic metamaterial near-field focusing lens

Yu¹,

Meng²,

Ding³

et al. 2023

Heliyon

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Metasurface Antenna Designed for Quasi-Nondiffraction Beam Size Adjustment and Microwave Power Transmission

Xiao,

Zhang,

et al. 2024

Antennas Wirel. Propag. Lett.

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Design of high-resolution near-field focusing metasurface lens

Cited by 6 publications

References 14 publications

Ultra-Compact 60-GHz Near-Field Focusing Configuration Using SIW Slot Array Loaded by Transmission Coding Metasurface Lens

Ultra-Compact 60-GHz Near-Field Focusing Configuration Using SIW Slot Array Loaded by Transmission Coding Metasurface Lens

Low-cost laser cutting fabricated all-metallic metamaterial near-field focusing lens

Metasurface Antenna Designed for Quasi-Nondiffraction Beam Size Adjustment and Microwave Power Transmission

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