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Experimental Study of the Protection Effect of the Short-wave RF Front-end Lightning Electromagnetic Pulse Protection Module Based on Switch-type and Voltage Limiting Type Protective Elements

机译:基于开关型和限压型保护元件的短波射频前端雷电电磁脉冲保护模块保护效果的实验研究

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This paper introduces the basic structure and protection effect test result of the short-wave RF front-end lightning electromagnetic pulse protection module based on the switch-type protective element (gas discharge tube, GDT) and voltage limiting type protection element (transient voltage suppressor, TVS), and analyzes the reasons for the waveform difference during measurement of the residual output voltage of the module with a high-voltage probe and an attenuator respectively. The study herein shows that the action delay of the protection module under development is less than 1 ns and its leakage pulse peak is less than 50 V when the lightning electromagnetic pulse with a peak voltage of 10 kV, a rising rate of 10 kV/μs and a peak current of 5 kA is applied, and in addition, the high-voltage probe, when adopted to measure the residual output voltage waveform of the module, is sensitive to the external electromagnetic radiation field, which will produce an interference signal hard to be eliminated, with its amplitude and oscillation period in direct proportion to the area of the high-voltage probe test circuit; while the coaxial attenuator enjoys a higher measurement accuracy.
机译:介绍了基于开关型保护元件(气体放电管,GDT)和限压型保护元件(瞬态电压抑制器)的短波射频前端雷电电磁脉冲保护模块的基本结构和保护效果测试结果。 (TVS),并分别分析使用高压探头和衰减器测量模块的残余输出电压时波形差异的原因。本文的研究表明,当雷电电磁脉冲的峰值电压为10 kV,上升速率为10 kV /μs时,正在开发的保护模块的动作延迟小于1 ns,其泄漏脉冲峰值小于50V。施加5 kA的峰值电流,此外,当采用高压探头测量模块的残余输出电压波形时,它对外部电磁辐射场敏感,会产生难以干扰的干扰信号。消除其幅度和振荡周期与高压探头测试电路的面积成正比;同轴衰减器具有较高的测量精度。

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