一种具有色散可控特性的二维参数优化空间有限差分时间差分方法

IF 4.8 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-11-25 DOI:10.1109/LAWP.2024.3505270

Jun-Feng Wang;Hao Huang;Zhizhang Chen

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引用次数: 0

摘要

本文提出了一种二维参数优化的空间有限差分时间微分（SFDTD）方法，简称PO-SFDTD方法。首先，分析了传统SFDTD方法的色散特性。为了提高色散性能，我们加入了一个权重参数，并利用四个模板的中心差分近似进行空间离散化。然后，我们开发了一种色散可控的二维PO-SFDTD方法。数值实验验证了该方法能显著减小色散误差，并能根据具体要求优化数值色散。

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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A 2-D Parameter-Optimized Spatial Finite-Difference Temporal Differential Method With Dispersion-Controllable Properties

In this letter, a 2-D parameter-optimized spatial finite-difference temporal differential (SFDTD) method is presented, referred to as the PO-SFDTD method. First, the dispersion characteristic of the conventional SFDTD method is demonstrated. To improve dispersion performance, we incorporate a weight parameter and utilize the central-difference approximation with four stencils for spatial discretization. Then, we develop a dispersion-controllable 2-D PO-SFDTD method. Numerical experiments validate that the proposed method can significantly reduce dispersion errors and optimize numerical dispersion according to specific requirements.

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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.