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صفحه اصلی
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سی و چهارمین کنفرانس بین المللی مهندسی برق
Circuit-Based Dispersion Analysis of Periodic Cross-Shaped Unit Cells with Dirac Characteristics
نویسندگان :
Mahyar Mehri Pashaki
1
Mohammad Hossein Koohi Ghamsari
2
Mohammad Memarian
3
1- Sharif university of technology
2- Sharif university of technology
3- Sharif university of technology
کلمات کلیدی :
Dispersion diagram،Dirac dispersion،periodic structures،equivalent circuit model،eigenmode analysis
چکیده :
In this paper, the dispersion behavior of periodic cross-shaped unit cells is investigated with an 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 to accurately reproduce the dispersion characteristics near the Gamma 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.
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بیشتر
ثمین همایش، سامانه مدیریت کنفرانس ها و جشنواره ها - نگارش 44.7.2