Simultaneous Optimization of 1-bit 3-D Coding Meta-Volumes for Both Broadband and Wide Field-of-View Radar Cross-Section Reduction

Chaky, Ryan J.; Beneck, Ryan J.; Campbell, Sawyer D.; Werner, Douglas H.

doi:10.1109/tap.2023.3243949

IEEE Trans. Antennas Propagat.

2023

DOI: 10.1109/tap.2023.3243949

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Simultaneous Optimization of 1-bit 3-D Coding Meta-Volumes for Both Broadband and Wide Field-of-View Radar Cross-Section Reduction

Ryan J. Chaky

Ryan J. Beneck

Sawyer D. Campbell

et al.

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2024

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“…I. INTRODUCTION adar cross section (RCS) reduction using metasurfaces has gained a significant attention among researchers in the field of new engineered materials and stealth technology [1] - [3]. A metasurface is a 2D structure and typically consists of an array of periodic elements called unit cells (also called meta-atoms) [4] - [7].…”

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Design of Polarization-Insensitive and Angularly Stable Metasurfaces With Symmetric Cubic Phase Distribution for Broadband RCS Reduction

Al-Nuaimi,

Zhu,

Whittow

et al. 2024

IEEE Trans. Antennas Propagat.

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This article presents an efficient and formulated approach to the design of polarization-insensitive metasurfaces adopting a symmetric cubic phase distribution for both wideband and wide-angle reduction of radar cross section (RCS). The proposed approach offers several key advantages, including the efficient calculation of the phase distribution across the metasurface and at each unit cell using an efficient and straightforward design formula, eliminating the need for timeconsuming optimization algorithms. Moreover, the design phase formula is independent of the wavelength, allowing for its extension to various frequency bands. Geometric phase theory is used to design a unit cell where any reflection phase value from 0° to 360° can be achieved by rotating the resonator in each unit cell. Then the proposed symmetric cubic phase distribution can be applied to the metasurface aperture. When circularly polarized (CP), linearly polarized (LP), and elliptically polarized (EP) plane waves illuminate the metasurface, both simulated and experimental results demonstrate that the polarization-insensitive metasurface with symmetric cubic phase distribution can substantially reduce the RCS and achieve diffusive scattering patterns. The scattering is significantly suppressed and exceeds 10 dB of RCS reduction from 11 to 28 GHz resulting in a fractional bandwidth (FBW) = 87.1%. Furthermore, the proposed metasurface maintains excellent angular stability and the RCS reduction exceeded 10 dB even under off-normal incidence when the elevation and azimuthal angles of incidences reached 60 o .

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Design of Polarization-Insensitive and Angularly Stable Metasurfaces With Symmetric Cubic Phase Distribution for Broadband RCS Reduction

Al-Nuaimi,

Zhu,

Whittow

et al. 2024

IEEE Trans. Antennas Propagat.

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Simultaneous Optimization of 1-bit 3-D Coding Meta-Volumes for Both Broadband and Wide Field-of-View Radar Cross-Section Reduction

Cited by 1 publication

References 29 publications

Design of Polarization-Insensitive and Angularly Stable Metasurfaces With Symmetric Cubic Phase Distribution for Broadband RCS Reduction

Design of Polarization-Insensitive and Angularly Stable Metasurfaces With Symmetric Cubic Phase Distribution for Broadband RCS Reduction

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