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    Area of Science:

    • Metamaterials and Nanophotonics
    • Electromagnetics and Wave Phenomena

    Background:

    • Radar cross section (RCS) reduction is crucial for stealth applications.
    • Existing metasurfaces often struggle with achieving wide bandwidth and polarization-independent performance.

    Purpose of the Study:

    • To present a polarization-modulated metasurface for improved magnitude and bandwidth of RCS reduction.
    • To demonstrate a novel approach for super-wideband phase cancellation and reflection diffusion.

    Main Methods:

    • Designing a metasurface utilizing variable unit cell sizes and height differences.
    • Implementing polarization modulation to control spatial response and achieve 2π phase shift.
    • Utilizing simulation, experimental validation, and theoretical analysis.

    Main Results:

    • Achieved a 10 dB monostatic RCS reduction from 3.87 to 92.89 GHz (24:1 ratio bandwidth).
    • Demonstrated identical performance for both polarizations under normal incidence.
    • Validated simulation results with experimental data and theoretical analysis.

    Conclusions:

    • The proposed metasurface effectively enhances RCS reduction magnitude and bandwidth.
    • The technique shows potential for suppressing various vector fields, including acoustic, electromagnetic, and optical waves.
    • This work offers a promising strategy for super-wideband wave suppression.