基于多级泰勒展开的宽带电磁散射分析方法

IF 3.7 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-23 DOI:10.1109/LAWP.2024.3521209

Kun Fan;Wei Zhou;Guangshang Cheng;Zhixiang Huang

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引用次数: 0

摘要

提出了一种基于多级泰勒展开（MTE）的快速宽带电磁散射分析方法。它在空间距离和频率方面扩展了格林函数。在空间距离方面，通过从格林函数的泰勒级数中提取频率无关项，可以得到几何上相关的预处理矩阵。在频率方面，通过将预处理矩阵乘以传播常数，可以有效地得到阻抗矩阵及其频率导数，显著提高了宽带电磁散射分析过程中矩阵填充的效率。利用这些预处理矩阵，可以计算出电流的展开系数。由此获得的系数将用于预测物体在宽带频率范围内的感应电流。避免了对每个频率点逐一进行迭代计算。数值结果表明，该方法能有效地加快宽带电磁散射分析的速度。

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A Wideband Electromagnetic Scattering Analysis Method Based on Multistage Taylor Expansion

A fast wideband electromagnetic scattering analysis method based on multistage Taylor expansion (MTE) is proposed. It expands the Green's function with respect to spatial distance and frequency. In terms of spatial distance, through the extraction of the frequency independent terms from the Taylor series in the Green's function, geometrically related preprocessing matrixes can be obtained. In terms of frequency, the impedance matrix and its frequency derivatives can be effectively obtained through multiplying the preprocessing matrixes by propagation constant, significantly enhancing the efficiency of matrix filling during the wideband electromagnetic scattering analysis. By using these preprocessing matrixes, the expanding coefficients of current can be calculated. The coefficients hence obtained will be used to predict the induced current of the object over a wideband frequency range. It avoids the iterative calculation of each frequency point one by one. Numerical results show that the proposed method can efficiently accelerate the wideband electromagnetic scattering analysis.

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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.