发表机构
Sharif University of Technology（谢里夫理工大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文用等效电路模型分析周期性十字形单元的狄拉克色散，与全波模拟吻合，并揭示S参数提取在低Q辐射模式下的局限。
AI 中文摘要
本文采用等效电路建模方法，重点研究了周期性十字形单元的色散行为，特别是狄拉克型色散。通过全波本征模模拟和基于散射参数的色散提取，分析了两种单元几何结构，包括简单十字结构和带中心贴片的改进构型。开发了一种等效电路模型，以捕捉主要的耦合机制，并准确再现Γ点附近的色散特性。结果表明，所提出的电路模型与全波模拟具有良好的一致性，并为分析阻带行为和模式简并提供了一个物理直观的框架。此外，还指出了在存在低Q辐射模式时，基于S参数的色散提取的局限性。
英文摘要
In this paper, the dispersion behavior of periodic cross-shaped unit cells is investigated with emphasis on Dirac-type dispersion using an equivalent circuit modeling approach. Two unit-cell geometries, including a simple cross structure and a modified configuration with a central patch, are analyzed using full-wave eigenmode simulations and scattering-parameter-based dispersion extraction. An equivalent circuit model is developed to capture the dominant coupling mechanisms and accurately reproduce the dispersion characteristics near the $Γ$-point. The results demonstrate that the proposed circuit model exhibits good agreement with full-wave simulations and provides a physically intuitive framework for analyzing stopband behavior and mode degeneracy. Furthermore, the limitations of S-parameter-based dispersion extraction in the presence of low-Q radiative modes are highlighted.
Comments2026 34rd International Conference on Electrical Engineering (ICEE)
