A Computationally Efficient Electromagnetic Wave Scattering Analysis Method for Electrically Large Multilayered Dielectric Structures

Abstract

The paper presents a computationally efficient method based on the modified equivalent current approximation for electromagnetic wave scattering analysis of electrically large multilayered lossy dielectric structures. The proposed method can be an effective alternative to commercially available tools and methods, which tend to become computationally intensive with increase in size and losses of structures. The proposed method is applied to compute the radar cross-section of various multilayered dielectric and coated PEC structures for both TE and TM polarization under normal and oblique incidences and compared with method of moments (MoM). The result shows excellent agreement and reduced computational resources and time by a factor of fifteen compared to MoM. The proposed method can be applied directly to study scattering problems involving electrically large multilayer dielectric and conducting structures.

Keywords

• Multilayered scattering
• Radar cross-section
• Modified equivalent current approximation
• Electromagnetic wave scattering
• Lossy dielectric medium