金属挡板对平行线栅有界波模拟器的影响仿真研究

杜立航; 高成; 陈海林; 张琪; 付亚鹏

doi:10.11884/HPLPB201830.170465

金属挡板对平行线栅有界波模拟器的影响仿真研究

doi: 10.11884/HPLPB201830.170465

陆军工程大学电磁环境效应与光电工程国家级重点实验室, 南京 210007

基金项目:

国防科技基金项目 3602039

装备预研基金项目 614220601011704

详细信息

作者简介:
杜立航(1981－), 男，博士研究生，从事武器装备电磁环境效应与防护技术研究；dulihang@163.com

通讯作者:
张琪(1987－), 男，讲师，从事雷电防护研究；emczhq@163.com

中图分类号: TM15
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出版历程
- 收稿日期: 2017-11-16
- 修回日期: 2018-03-15
- 刊出日期: 2018-07-15

Simulation study on influence of metal plate on parallel wire-grid bounded-wave simulator

Key Laboratory of Science and Technology on Electromagnetic Environmental Effects and Electro-optical Engineering, Army Engineering University of PLA, Nanjing 210007, China

摘要

摘要: 利用基于有限积分法的电磁场仿真软件CST仿真和分析了金属挡板对大型平行线栅有界波模拟器内部可用测试区和外部辐射电场分布的影响。首先建立了平行线栅有界波模拟器仿真模型，并依据GJB 8848证明了其合理性；而后重点分析了金属板对模拟器内部可用测试区电场分布的影响，并通过详实的数据列出了金属板位置、厚度、高度和长度等参数的具体作用效果；然后讨论了金属板对模拟器外部辐射电场的屏蔽效果；最后结合仿真结果提出金属挡板的设置应尽可能地远离模拟器，且有效反射面积越小越好，而对厚度无特别要求。
- 高空核电磁脉冲 /
- 平行线栅有界波模拟器 /
- 内部电场分布 /
- 可用测试区 /
- 外部辐射场 /
- 屏蔽效果
Abstract: The electromagnetic field simulation software CST based on the finite integral method was used to simulate and analyze the influence of the metal plate on the distribution of the available test volume and external radiated field in the large-scale parallel wire-grid bounded-wave simulator. First of all, the simulation model of the parallel wire-grid bounded-wave simulator was established, and its rationality was proved according to GJB 8848. Then the influence of the metal plate on the electric field distribution of the available test volume inside the simulator was analyzed in detail, and the effect of the location, thickness, height, and length of the metal plate were listed through detailed data. Moreover, the shielding effect of the metal plate on the external radiated electric field of the simulator was discussed. Finally, several suggestions for setting the metal protection plate were proposed. The conclusion is a good reference for effectively shielding the external radiation field without affecting the internal electric field distribution of the bounded-wave simulator.
- HEMP /
- parallel wire-grid bounded-wave simulator /
- internal electric field distribution /
- available test volume /
- external radiation field /
- shielding effectiveness

HTML全文

图 1 平行线栅型有界波模拟器结构示意图

Figure 1. Parallel line grid bounded-wave simulator

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图 2 激励源电压波形

Figure 2. Voltage waveform of the excitation source

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图 3 模拟器内部电场分布

Figure 3. Internal electric field distribution of the simulator

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图 4 有无金属板内部电场对比

Figure 4. Comparison of internal electric field with or without metal plate

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图 5 A点的电场变化

Figure 5. Changes of electric field at A(t_d, h′ and l′ are thickness, height and length of the plate)

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图 6 有无金属板外侧辐射电场峰值对比

Figure 6. Comparison of external radiation field with or without metal plate

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表 1 测试区顶点处的电场及其均匀性

Table 1. Electric field strength at the apex of the test area and its uniformity

location	electric field peak E_p/(V·m^-1)	rise time t_r/ns	half width t_hw/ns	uniformity/dB
A	53 427	2.74	25.50	0.425
B	54 062	2.67	22.87	0.322
C	54 062	2.67	22.87	0.322
D	53 427	2.74	25.50	0.425

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表 2 有无金属板内部电场参数对比

Table 2. Comparison of internal electric field parameters with or without metal plate

location	electric field peak E_p/(V·m^-1)		risetime t_r/ns		half width t_hw/ns
location	without plate	with plate	without plate	with plate	without plate	with plate
A	53 427	38 792	2.74	3.31	25.50	28.74
B	54 062	40 803	2.67	4.25	22.87	25.93
C	54 062	48 079	2.67	2.19	22.87	24.83
D	53 427	52 038	2.74	2.59	25.50	25.81

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表 3 不同位置处的屏蔽效果

Table 3. Shielding effectiveness at different locations

x/m	E_c/(V·m^-1)	E_m/(V·m^-1)	SE
4	29 007	4 841.9	15.55
5	21 964	7 145.6	9.75
6	16 889	7 459.4	7.10
7	13 140	6 936.7	5.55
8	10 381	6 175.1	4.51
9	8 604	5 545.2	3.82
10	6 910.5	4 831.7	3.11

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