Vector field transformation-based wavefront synthesis for conformal metasurface cloak design

Area of Science:

• Electromagnetism and Metamaterials
• Wavefield Synthesis
• Computational Electromagnetics

Background:

• Traditional cloaking methods face challenges with higher-order conformal surfaces (HOCS).
• Controlling electromagnetic properties for cloaking applications is a significant research area.
• Metasurfaces offer unique capabilities for manipulating electromagnetic waves.

Purpose of the Study:

• To propose a novel vector field transformation (VFT)-based wavefield synthesis method.
• To optimize conformal metasurface cloaks for enhanced cloaking and beam steering capabilities.
• To address limitations of existing methods for HOCS cloaking.

Main Methods:

• Developed a VFT-based wavefield synthesis approach.
• Transformed diverse lattice patterns into a global coordinate system for efficient computation.
• Validated the method by comparing theoretical calculations with full-wave simulations of HOCS scattering fields.

Main Results:

• The VFT method enables rapid and accurate computation of scattering wavefields.
• Theoretical and simulated results for HOCS scattering fields demonstrate method effectiveness.
• Optimized conformal metasurface cloaks achieved successful stealth properties and multiple beam steering.

Conclusions:

• The proposed VFT-based wavefront synthesis is a resource-efficient and effective method for optimizing conformal metasurface cloaks.
• This approach shows significant promise for advancing metasurface cloaking technology.
• The method successfully demonstrates stealth and multiple beam steering applications.