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Design of Polarization Conversion Metasurfaces With Low-Scattering Multibeam and Multipolarization
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DOI：10.1109/lawp.2026.3697208.png)
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Abstract
En 中文
This letter proposes two types of phase gradient metasurfaces, named the noncentrosymmetric beam metasurface (NCSM) and centrosymmetric beam metasurface (CSM), which exhibit remarkable performance in reducing radar cross-section (RCS). For the NCSM, when a circularly polarized (CP) wave is incident, it scatters incident wave into 45 beams accompanied by polarization conversion. When a linearly polarized (LP) wave is incident, the NCSM can generate a total of 90 beams, including 45 left-circularly polarized (LCP) beams and 45 right-circularly polarized (RCP) beams. In contrast, when either CP or LP waves are incident on a CSM, it scatters incident wave into 36 beams and simultaneously achieves polarization conversion. The NCSM achieves over 10 dB multipolarization RCS reduction across frequency range from 14.3 GHz to 33.4 GHz (80.1% relative bandwidth). Similarly, the CSM achieves over 10 dB multipolarization RCS reduction within a frequency range from 14.9 GHz to 33.5 GHz (76.8% relative bandwidth). The proposed metasurfaces provide an efficient way to achieve multipolarization RCS reduction, which can be adapted to the complex radar detection environment.
Keywords:
Gradient phase superposition
metasurface
multipolarization
polarization conversion metasurface (PCM)
radar cross-section (RCS) reduction
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