多导体传输线高频场线耦合渐近法分析

张馨丹; 赵春莹; 刘强; 闫丽萍; 赵翔; 周海京

doi:10.11884/HPLPB201830.180040

多导体传输线高频场线耦合渐近法分析

doi: 10.11884/HPLPB201830.180040

1.
四川大学电子信息学院, 成都 610065
2.
北京应用物理与计算数学研究所, 北京 100088

基金项目:

国家自然科学基金委员会-中国工程物理研究院联合基金项目 NSAF-U1530143

详细信息

作者简介:
张馨丹(1993—)，女，硕士研究生，从事电磁兼容方面研究；544462328@qq.com

通讯作者:
闫丽萍(1972—)，女，教授，主要从事电磁兼容建模分析、电磁效应评估研究；liping_yan@scu.edu.cn

中图分类号: O441.4
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- 文章访问数: 890
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- 被引次数: 0
出版历程
- 收稿日期: 2018-02-09
- 修回日期: 2018-04-09
- 刊出日期: 2018-08-15

Improved asymptotic method for high-frequency electromagnetic field coupling to multiconductor transmission line

1.
School of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
2.
Institute of Applied Physics and Computational Mathematics, Beijing 100088, China

摘要

摘要: 基于理想地面上单导体传输线渐近法，提出了改进的多导体传输线渐近法。与已有多导体传输线渐近法相比，所提方法步骤简单，求解效率高。利用所提方法计算电磁波与不同结构多导体传输线网络之间的耦合，结果与全波分析方法计算结果吻合很好。在此基础上，分析了多导体传输线导线间距对沿线感应电流的影响。结果表明，随着导线间距变化，矩形网络和平行网络沿线感应电流波形变化趋势不同，且当间距大于一个波长后，平行网络和理想地面上相同结构的单导线具有相同的沿线感应电流。
- 场线耦合 /
- 高频 /
- 渐近法 /
- 多导体 /
- 感应电流 /
- 传输线间距
Abstract: Based on the asymptotic method for high frequency electromagnetic field coupling to single wire above the ground, an asymptotic method for multiconductor transmission line (TL) is proposed. The proposed method simplifies the solving process of the scattering/reflection parameters required and therefore becomes more efficient than the previous asymptotic method for multiconductor TL. The induced currents along multiconductor TLs with different configuration are calculated using the proposed method, and the results are in good agreements with the simulated results of NEC, a full-wave analysis software. Moreover, the influence of the separation distance between the wires of the rectangular TL and the parallel TL on the induced current is analyzed. Results show that the induced currents along these two TLs change in the rectangular TL and the parallel TL change in different way, as the separation distance between the lines increases. Especially, the induced current along the parallel TL no longer changes while the separation distance increases to more than a wavelength, and is the same as that along the single wire above the perfect conducting ground with the same structure.
- field coupling to transmission line /
- high frequency /
- asymptotic approach /
- multiconductor transmission line /
- induced current /
- separation distance between transmission wires

HTML全文

图 1 计算模型

Figure 1. Calculation model

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图 2 文献[11]中的三导体传输线系统

Figure 2. Three-conductor line system in Ref.[11]

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图 3 多导体传输线上感应电流分布(传输线#3)

Figure 3. Induced current on multiconductor transmission lines (wire #3)

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图 4 不同多导体传输线结构

Figure 4. Configuration of different multiconductor transmission lines

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图 5 多导体传输线上感应电流分布(传输线#1)

Figure 5. Induced current on multiconductor transmission lines (wire #1)

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图 6 多导体传输线结构

Figure 6. Configuration of the multiconductor transmission line

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图 7 多导体传输线沿线感应电流随线间距的变化(传输线#1)

Figure 7. Induced current along the multiconductor transmission line in terms of the separation distance between lines(wire #1)

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表 1 两种多导体传输线渐近法比较

Table 1. The comparison between two asymptotic methods for field coupling to multiconductor transmission line

number of conductor	times of NEC simulation		times of data fitting
number of conductor	method in Ref.[11]	presented method	method in Ref.[11]	presented method
1	3	2	3	2
3	7	2	21	6
5	11	2	55	10

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参考文献(12)

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