A General ADE-WLP-FDTD Method With a New Temporal Basis for Wave Propagation

IF 2.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Microwave and Wireless Components Letters Pub Date : 2022-12-01 DOI:10.1109/LMWC.2022.3184044

Gui-Ying Liu, Wei‐Jun Chen, Jun Quan

引用次数: 0

Abstract

Based on an auxiliary differential equation (ADE) and a new temporal basis function, we propose a 3-D ADE finite-difference time-domain method (FDTD) with weighted Laguerre polynomials (WLPs), 3-D ADE-WLP-FDTD for short, to calculate wave propagation in general dispersive materials. Our proposed method introduces a linear combination of three WLPs as a temporal basis to improve computational efficiency and reduce memory usage. The ADE technique, which can effectively model dispersive media, was used to establish the relationship between the electric displacement vector and electric field intensity. Two numerical examples were presented to validate the advantages of the proposed approach. The simulation results reveal that compared with the conventional ADE-WLP-FDTD method, the proposed method can speed up the computational process and reduce memory usage with comparable accuracy.

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一种具有新时间基的波传播通用ADE-WLP-FDTD方法

基于辅助微分方程(ADE)和一个新的时间基函数，提出了一种加权拉盖尔多项式(wlp)的三维ADE时域有限差分方法(FDTD)，简称为三维ADE- wlp -FDTD，用于计算一般色散材料中的波传播。我们提出的方法引入了三个wlp的线性组合作为时间基础，以提高计算效率并减少内存使用。利用可有效模拟色散介质的ADE技术，建立了电位移矢量与电场强度之间的关系。最后给出了两个数值算例，验证了该方法的优越性。仿真结果表明，与传统的ADE-WLP-FDTD方法相比，该方法可以在相当精度的情况下加快计算速度，减少内存占用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Microwave and Wireless Components Letters 工程技术-工程：电子与电气

自引率

13.30%

发文量

376

审稿时长

3.0 months

期刊介绍： The IEEE Microwave and Wireless Components Letters (MWCL) publishes four-page papers (3 pages of text + up to 1 page of references) that focus on microwave theory, techniques and applications as they relate to components, devices, circuits, biological effects, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, medical and industrial activities. Microwave theory and techniques relates to electromagnetic waves in the frequency range of a few MHz and a THz; other spectral regions and wave types are included within the scope of the MWCL whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.