Based on the scattering cancellation technique, an approach is proposed to improve the mantle cloak’s performance for electrically large cylinders. The procedure is based on the observation that the number of dominant scattering coefficients and corresponding magnitudes for a cylinder decreases when oriented obliquely to the incident wave. Thus, it is quite advantageous to design a mantle cloak under the oblique incidence than the normal incidence. The proposed method starts with determining the optimum angle of incidence at which if the object is oriented with respect to the incident wave, the maximum scattering reduction can be obtained with a mantle cloak explicitly designed for that orientation. The procedure is applied to cylinders of radii $0.25{\lambda }_0$ and $0.85{\lambda }_0$, where ${\lambda }_0$ is the design wavelength. The proposed approach’s advantages are highlighted by comparing it with the previously published literature. Additionally, the mantle cloak is realized using a periodic grid of metallic patches, and simulations in Ansys HFSS are performed to verify the design.

基于散射消除技术，提出了一种方法来提高电大圆柱体的披风性能。该程序基于以下观察结果：当倾斜于入射波时，圆柱体的主要散射系数的数量和相应的大小会减少。因此，在倾斜入射情况下设计披风斗篷比在正常入射情况下是非常有利的。所提出的方法从确定最佳入射角开始，如果物体相对于入射波定向，则可以使用为该定向明确设计的披风来获得最大的散射减少。该程序适用于半径圆柱体$0.25{\lambda }_0$ 和 $0.85{\lambda }_0$，在哪里 ${\lambda }_0$是设计波长。通过与以前发表的文献进行比较，突出了该方法的优点。此外，使用金属网格的周期性网格实现了披风，并在Ansys HFSS中进行了仿真以验证设计。