A Passive Metasurface for Gain Enhancement of Wide-Angle Millimeter-Wave Multibeam Array Antenna

Sun, Qiang; Ban, Yong‐Ling; Li, Xiao-Fei; Hu, Jun; Nie, Zaiping

doi:10.1109/lawp.2023.3241284

Cited by 8 publications

(1 citation statement)

References 26 publications

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“…Recently, MS has been widely used in the wide-scan phased array. In [12], a passive MS for gain enhancement of the wide-angle millimeter-wave (mm-wave) multibeam array antenna is proposed. MS units are also utilized as the radiators for wide-angle scanning [13,14].…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of a metasurface-based wideband wide-angle scanning phased array

Liu

2023

J. Phys. D: Appl. Phys.

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This paper presents a wideband wide-angle scanning phased array, which employs Φ-shaped unit cells to form a metasurface (MS) for achieving wideband impedance matching. To optimize the impedance matching performance, a design procedure based on an equivalent circuit model is proposed. A quasi-analytical model based on the equivalent circuit model and the permittivity εr and permeability μr of the MS properly predicts the scan range of the full structure, and allows for an accelerated design process. The extensive analysis confirms the effectiveness of the MS as the wideband angle matching layer (WAIML) for the antenna array. The MS has demonstrated a positive impact on the wideband wide-angle scanning performance. Finally, a prototype is fabricated and measured, and the experimental results agree well with the simulation results. The proposed array exhibits wide-angle scanning across a 3.5:1 impedance bandwidth (2-7 GHz) with ±600 scan volume in both E-plane and H-plane.

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Section: Introductionmentioning

confidence: 99%

Design and analysis of a metasurface-based wideband wide-angle scanning phased array

Liu

2023

J. Phys. D: Appl. Phys.

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A versatile design method applied to reconfigurable metasurfaces

Han,

Ding,

Jia

et al. 2024

Journal of Applied Physics

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This paper introduces a versatile design method for reconfigurable metasurfaces based on the Pancharatnam–Berry phase theory. Unlike traditional reconfigurable metasurfaces that require designing independent surfaces for specific applications, leading to a significant time investment for designers to learn and create, this study proposes a foundational, invariant metasurface. By selectively metallizing holes or inserting metal cylinders, it achieves nine available functionalities. Regardless of the chosen operating function, the metasurface demonstrates high efficiency at 8.2 GHz, with amplitude loss less than 1 dB. Additionally, when operating in phase modulation mode, the design provides a 360° phase adjustment range and a 30° phase step. A prototype containing 31×31 units (425.6×425.6mm2) has been fabricated and tested under function 7 (TM and RHCP transmission phase modulation). Measurement results confirm the metasurface’s capability for polarization conversion and phase modulation at the frequency of 8.2 GHz.

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