Design and validation test of high-altitude electromagnetic pulse conductive protector module for wireless communication system
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摘要: 为提高甚高频无线通信系统的抗高空电磁脉冲能力，基于易损性分析结果，确定了瞬态泄流和稳态滤波联合防护的设计思路以及设计指标，并研制了防护样件。使用20 ns/500 ns传导注入波形开展防护组件脉冲注入试验，比系统原始防护器残余电流峰值减小60%，启动时间缩短75%，作用时间缩短80%，注入波形低频能量限制（20 MHz以下）提高1个量级；以某甚高频无线通信系统为被试品，开展了防护组件加固验证试验，防护组件残余电流控制在10 A水平以下，被试系统功能和性能指标正常，验证了防护组件设计的有效性。Abstract: To improve the anti-HEMP ability of very high frequency wireless communication systems, based on the vulnerability analysis results in the early stage, the design principle and indicators of the combination of transient discharge and steady-state filtering were determined, and the protector module sample was produced. The 20 ns/500 ns conduction injected waveform was used to carry out the pulsed conducted injection test for the protector sample. Compared with the original protector, the peak of the residual current was reduced by 60%, the start time was shortened by 75%, the action time was shortened by 80%, and the low-frequency energy limit of the injected waveform below 20 MHz was increased by 1 order of magnitude. A VHF wireless communication system was taken as the test product, and the protection validation test was carried out. The test illustrated that the residual current peak is controlled below 10 A, and the function and performance of the tested system are norm, which verifies the effectiveness of the designed protector module.
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图 7 防护组件注入试验仿真电路和仿真结果
Figure 7. Simulation circuit and residual current response for PCI test of the designed protector module
图 10 注入试验设置和注入电流时频域分析结果
Figure 10. Test set for PCI test and analysis of the injected current
图 11 组合防护组件残余电流时域频域分析
Figure 11. Time and frequency analysis for the residual current of the designed protector module
图 12 两款防护器防护前后电流波形响应分析
Figure 12. Comparison of the injected wave and residual wave for these two protector modules
图 14 两种防护器前后端电流响应测试结果分析
Figure 14. Test result analysis for the current responses of these two protectors
表 1 防护指标
Table 1. Protection indicator
operation frequency/MHz insert loss/dB maximum residual current peak (400 A injected current peak 400 A) starting time 30-100 $ \leqslant $0.5 dB $ \leqslant $10 A $ \leqslant $10 ns 
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