多导体传输线串扰实验不确定度的预测

邓莉亭; 钟龙权; 刘强; 孙子涵; 闫丽萍; 赵翔

doi:10.11884/HPLPB202133.210066

多导体传输线串扰实验不确定度的预测

doi: 10.11884/HPLPB202133.210066

1.
四川大学电子信息学院，成都 610065
2.
中国工程物理研究院应用电子学研究所，四川绵阳 621900
3.
北京应用物理与计算数学研究所，北京 100088

基金项目: 国家自然科学基金项目（61877041）；成都市科技项目（2020-GH02–00061-Hz）

详细信息

作者简介:
邓莉亭（1996—），女，硕士，主要从事电磁兼容方面的研究

通讯作者:
闫丽萍（1972—），女，教授，主要从事电磁兼容建模分析和电磁环境效应评估方面的研究

中图分类号: O441.4
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- 文章访问数: 888
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- 被引次数: 0
出版历程
- 收稿日期: 2021-03-05
- 修回日期: 2021-07-01
- 网络出版日期: 2021-07-21
- 刊出日期: 2021-08-15

Uncertainty prediction of crosstalk measurement for multi-conductor transmission lines

1.
Department of Electronic and Information Engineering, Sichuan University, Chengdu 610065, China
2.
Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China
3.
Institute of Applied Physics and Computational Mathematics, Beijing 100088, China

摘要

摘要: 利用随机降阶模型（SROM）对影响线缆串扰的不确定变量进行了敏感性分析，在此基础上预测了在这些不确定性变量影响下的串扰不确定度。并搭建三导体传输线串扰实验系统，测量了近端串扰和远端串扰，根据标准GB/Z 6113.401—2018/CISPR/TR 16-4-1:2009，评估了串扰实验的测量不确定度。将基于SROM方法的串扰不确定度，与实际测量获得的不确定度进行对比。结果表明，二者随频率变化趋势一致，且实验测试不确定度在预测不确定度范围内。采用SROM方法选取样本计算的不确定度可用于预测串扰实际测量结果不确定度。
- 串扰实验 /
- 随机降阶模型 /
- 敏感性 /
- 不确定度
Abstract: Sensitivity analysis of cable crosstalk to uncertain parameters is studied using stochastic reduced order model (SROM), and then the uncertainty of cable crosstalk is predicted. To verify the prediction, a three-conductor transmission line (TL) experiment system is established. Both near end and far end crosstalk (NEXT and FEXT) are tested. Then the measurement uncertainty is deduced according to the standard GB/Z 6113.401—2018/CISPR/TR 16-4-1:2009. Comparing the predicted uncertainty to the measured one, it is found that they have the same variation trends with frequency. Moreover, the measured uncertainty is within the range of the prediction. Therefore, the uncertainty prediction using SROM can be applied to predict the test uncertainty, which is instructive to the crosstalk measurement for both analysis model verification and experimental investigation.
- crosstalk experiment /
- stochastic reduced order model (SROM) /
- sensitivity /
- uncertainty

HTML全文

图 1 三导体传输线模型图

Figure 1. The model of three-conductor transmission line

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图 2 三导体串扰敏感性分析结果

Figure 2. Three-conductor crosstalk sensitivity analysis results

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图 3 不同导线间距和高度对近端串扰敏感性的影响

Figure 3. Effects of spacing and height on the sensitivity of NEXT

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图 4 样本选取

Figure 4. Sample selection

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图 5 基于SROM方法的串扰结果图

Figure 5. Upper and lower bound obtained using the SROM method

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图 6 线缆串扰实验测试系统图

Figure 6. Experimental system of cable crosstalk

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图 7 单导线一致性测试结果

Figure 7. Consistency measurement result of single wire

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图 8 测试结果与仿真结果对比

Figure 8. Comparison between measured and simulated results

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图 9 三导体传输线测试结果图

Figure 9. Diagram of three-conductor transmission line test results

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图 10 三导体传输线测试不确定度

Figure 10. Test uncertainty of three-conductor transmission lines

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表 1 输入变量的统计特性

Table 1. Statistical properties of the input variables

mean(h)	σ(h)	COV(h)	mean(d)	σ(d)	COV(d)	mean(r)	σ(r)	COV(r)	mean(R)	σ(R)	COV(R)
10	1	0.1	20	2	0.1	0.4	0.04	0.1	50	5	0.1

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表 2 输入变量的统计特性

Table 2. Statistical properties of the input variables

	h/mm			d/mm
Mean	5	10	15	15	20	25
$\sigma $	0.5	1	1.5	1.5	2	2.5
COV	0.1	0.1	0.1	0.1	0.1	0.1

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表 3 50 Ω SMA负载阻值

Table 3. 50 Ω SMA load resistance

R₁/Ω	R₂/Ω	R₃/Ω	R₄/Ω	R₅/Ω	R₆/Ω	R₇/Ω	R₈/Ω
49.0	48.0	48.0	48.0	49.0	48.0	48.0	48.5

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表 4 金属地上双导线串扰测试结果与仿真结果对比

Table 4. Comparison of crosstalk between measured and simulated results

	ρ	Δ/dB
NEXT	0.9354	1.108
FEXT	0.9219	0.7679

下载: 导出CSV

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