volume | PIER Journals

Abstract

In this paper, a wideband design of a conformal metasurface for RCS reduction in the range of 6.3~8.3 GHz is introduced. The proposed unit cell has a reflection amplitude less than -0.5 dB. The methodology for reducing the radar cross section using metamaterial is introduced along with the evolution of the design of the proposed unit cell. The conformal array is modeled using this unit, and the performance of a metasurface when being attached to a conformal metallic object is investigated. When the proposed metasurface is attached to a 3D object, it can achieve more diffused scattering patterns and wide scattering angles, regardless of the polarization of the incident waves and across a wide range of incident angles. It can achieve more than 10 dB reduction RCS. The sheet operates well for incident wave angles up to 60°. Both simulated and measured results demonstrate that the conformal metasurface effectively achieves diffuse reflection and RCS reduction which holds significant potential for applications in the field of advanced stealth technology, and the sheet size is scalable to larger sizes.

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Dr. Shimaa Ahmed Megahed Soliman

Dr. Sherine Ismail Abd El‑Rahman

Dr. Hany Mahmoud Zamel