Fast Analysis Method for Far-Field Scattering Characteristics of Coding Metasurfaces Based on the Equivalent Source...

Area of Science:

• Electromagnetics
• Materials Science
• Computational Physics

Background:

• Coding metasurfaces manipulate electromagnetic waves using spatially arranged elements with distinct responses.
• Existing far-field calculation methods, like the equivalent source principle, face challenges in efficiency and accuracy.
• Accurate far-field analysis is crucial for designing metasurface functionalities.

Purpose of the Study:

• To propose an improved equivalent source method for efficient and accurate far-field scattering calculations of coding metasurfaces.
• To enhance the computational accuracy and efficiency compared to existing methods.
• To validate the proposed method through comparative analyses and experimental measurements.

Main Methods:

• Development of a novel extraction model within the equivalent source framework.
• Reconstruction of metasurface far-field scattering patterns using equivalent source radiation fields.
• Comparative analysis against traditional methods, existing equivalent source methods, and full-wave simulations.
• Experimental validation of the proposed method.

Main Results:

• The improved equivalent source method demonstrates enhanced computational accuracy.
• High computational efficiency is maintained, outperforming existing techniques.
• Comparative analyses confirm superior performance over traditional and existing equivalent source methods.
• Experimental measurements validate the method's accuracy and efficiency.

Conclusions:

• The proposed improved equivalent source method offers a significant advancement for coding metasurface analysis.
• This method provides a robust and efficient tool for predicting far-field scattering characteristics.
• The findings pave the way for more sophisticated design and application of coding metasurfaces.