A Scattering-Mode-Decoupling-Enabled Intelligent Metasurface for Wide-Angle and Multiband Cloaking
Guo Bai , Jianming Liao , Yi Chen , Cheng Huang , Xiaoliang Ma , Xiangang Luo
Engineering ›› : 202607038
Reconfigurable metasurfaces provide a promising approach for adaptive electromagnetic cloaking but still present critical challenges in predicting scattering responses with high accuracy and in optimizing performance across broad bandwidths and wide angular ranges, especially in the presence of scatterer-induced occlusions. In this work, we propose a physics-informed neural network (PINN)-enabled reconfigurable metasurface cloak that integrates a novel scattering-mode-decoupling theory (SMDT) to achieve accurate wideband and wide-angle prediction and optimization with only a limited amount of training data. The proposed framework resolves complex mutual coupling and occlusion effects, enabling a multi-frequency and multi-angle electromagnetic illusion using a single optimized spatially distributed bias configuration. As a result, the approach reduces dependence on high-precision angle and frequency sensors while alleviating the latency and performance degradation caused by frequent configuration switching. The experimental results demonstrate that the fabricated cloak effectively controls complex scattering responses across a broadband frequency range from 6.5 to 9.0 GHz and over wide angular spans up to ±40°, even under occlusion conditions. This study establishes a new benchmark for adaptive cloaking by enhancing scalability, improving robustness under dynamic environments, and expanding applicability to practical scenarios such as concealment and electromagnetic illusion.
Reconfigurable metasurface / Electromagnetic cloaking / Physics-informed neural networks / Electromagnetic illusion / Wideband and wide-angle scattering
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