双线系统双探头大电流注入等效强场电磁辐射试验方法

doi:10.12305/j.issn.1001-506X.2021.11.04

摘要/Abstract

摘要：

针对平行双线耦合通道线缆两端设备同时进行试验考核的技术需求, 开展了双线系统双探头大电流注入等效替代辐照试验方法的研究。以非线性响应系统为受试设备, 建立了辐照和注入这两种条件下受试设备响应的分析计算模型, 推导出了注入激励源电压与辐照场强之间的等效对应关系, 提出了双探头大电流注入等效强场电磁辐射试验的条件和方法, 并进行了试验验证。试验验证结果表明, 双探头大电流注入等效强场电磁辐射试验的方法可以排除双线系统两终端阻抗参数的影响, 同时使两端的响应在辐照和注入的条件下一致, 可以实现精确等效。

关键词: 双探头, 大电流注入, 双线系统, 电磁辐射, 非线性系统, 等效替代

Abstract:

Aiming at the technical requirements for simultaneous test and assessment of equipment at both ends, the research on the two-wire system double-probe bulk current injection equivalent replacement radiation test method is carried out. Taking the nonlinear response system as the tested device, the analysis and calculation model of the response of the tested device under the two conditions of radiation method and injection method is established. The equivalent corresponding relationship is deduced between the injection excitation source voltage and the radiation field intensity, and the conditions and methods for the double-probe bulk current injection equivalent high field electromagnetic radiation test are proposed, and the test verification is carried out. The test verification results show that the method of double-probe bulk current injection equivalent high field electromagnetic radiation test can eliminate the influence of the impedance parameters of the two terminals of the two-wire system. And the method can make the response of the two ends consistent under the conditions of radiation and injection at the same time, which can achieve accuracy.

Key words: two probes, bulk current injection, two-wire system, electromagnetic radiation, nonlinear system, equivalent substitution

中图分类号:

O441
TM937

孙江宁, 潘晓东, 卢新福, 万浩江. 双线系统双探头大电流注入等效强场电磁辐射试验方法[J]. 系统工程与电子技术, 2021, 43(11): 3064-3071.

Jiangning SUN, Xiaodong PAN, Xinfu LU, Haojiang WAN. Test method of bulk current injection into the equivalent high field electromagnetic radiation of two-wire system with two probes[J]. Systems Engineering and Electronics, 2021, 43(11): 3064-3071.

图/表 10

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图9

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频率/MHz	试验类别	阻抗条件/Ω	辐照试验				注入试验				左端注入与辐照试验误差/dB	右端注入与辐照试验误差/dB
频率/MHz	试验类别	阻抗条件/Ω	辐射功率dBm	左侧终端响应dBm	右侧终端响应dBm	两侧终端响应的相位差/(°)	注入功率dBm	左侧终端响应dBm	右侧终端响应dBm	两侧终端响应的相位差/(°)	左端注入与辐照试验误差/dB	右端注入与辐照试验误差/dB
320	低场强预先试验	左25 右37.5	0	-52.4	-41.2	-50	-0.2	-52.4	-41.2	-50	-	-
	高场强外推试验1	左25 右50	10	-38.8	-26.4	-78	9.8	-40.5	-28.0	-78	1.7	1.6
	高场强外推试验2	左50 右50	10	-35.4	-27.5	-46	9.8	-36.4	-27.9	-45	1.0	0.4
380	低场强预先试验	左50 右50	0	-44.2	-39.0	-86	-8.1	-44.2	-39.0	-86	-	-
	高场强外推试验1	左50 右37.5	10	-35.3	-32.2	-49	1.9	-34.8	-33.1	-47.0	0.5	0.9
	高场强外推试验2	左50 右25	10	-34.4	-34.3	-50	1.9	-34.0	-36.0	-56.0	0.4	1.7
400	低场强预先试验	左50 右25	0	-45.0	-44.0	135	-9.9	-45.0	-44.0	135	-	-
	高场强外推试验1	左50 右37.5	10	-33.7	-31.6	133	0.1	-33.9	-33.5	135	0.2	1.9
	高场强外推试验2	左50 右16.7	10	-35.6	-34.8	123	0.1	-35.8	-36.9	127	0.2	2.1

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