The Unconditionally Stable Associated Hermite FDTD Method With Dielectric Coating Thin Wires Model

作者：Chen Chao, Zheng‐Yu Huang, Zi-An Chen, Feng Jiang, Haiyan Duan · 发表于：IEEE Microwave and Wireless Technology Letters · 年份：2023 · DOI：10.1109/lmwt.2023.3317696 · 被引用次数：2 · 研究领域：Electromagnetic Simulation and Numerical Methods、Numerical methods in engineering、Electromagnetic Scattering and Analysis

This letter presents a model for dielectric coating thin wires based on the unconditionally stable (US) associated Hermite finite-different time-domain (AH FDTD) method. On the premise of a static field model of infinite-length thin wires, using Faraday’s law contour-path formulation, the coefficient matrix equation of dielectric coating thin wires in the AH domain is deduced, and, finally, the model is completed. Taking the five-element Yagi antenna and square antenna as examples, the results of this model are compared with the traditional finite-different time-domain (FDTD) method. The results show that the dielectric coating thin wires model can maintain the relative difference of below −40 dB and improve the calculation speed.