Scattering Suppression Investigation of Mantle Cloak With a Novel Unit Cell Design

In this paper, a mantle cloak is designed using a cylindrical metasurface with a novel unit cell for scattering suppression. To ensure substantial scattering suppression from all angular directions around the cylinder, the surface impedance of the mantle cloak is derived using Mie theory. The surface impedance is employed as a design guideline for determining the essential unit cell parameters. The proposed cloak is designed for an electrically small cylindrical object. Bi‐static Radar Cross‐Section (RCS) simulations have been performed for the cylinder's cloaked and uncloaked configurations. The designed cylinder exhibited significant scattering suppression at the operating frequency when comparing the simulation results for cloaked and uncloaked cylinders. Additionally, the results obtained with the novel unit cell design are compared to those presented in the literature. This comparison demonstrates a favorable cloaking performance of the proposed design. As a demonstration of the topic, a single‐layer novel unit cell cloaked cylinder is made of total radius, total length, and dielectric spacer's thickness ( represents the wavelength at the designed frequency GHz). The single‐layer novel unit‐cell cloaked cylinder has an absolute RCS reduction of dB at GHz. Scattering is effectively suppressed in all directions at the operating frequency. The important invisibility level demonstrated in this study lays the foundation for future investigations in multiple domains, such as radar technologies, sensing applications, and antenna isolation to reduce blockages.