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电磁脉冲(EMP)会对电子设备、器件以及系统的信号线路造成干扰、潜在性失效或永久性损伤,而传输线及其网络正是其主要的能量耦合通道,为研究注入式电磁脉冲对传输线网络的耦合规律,以环形网络和树形网络两种常见网络为研究对象,运用电磁拓扑理论与BLT方程,研究电磁脉冲在传输线网络中的时域响应。首先推导了传输线网络BLT方程并进行求解,建立了树形结构和环形结构传输线网络的电磁拓扑模型,在运用BLT方程求解网络结点响应的过程中,提出了先求解网络传递函数而后结合时域卷积的计算方法,对网络结点的时域响应进行了仿真计算。通过树形网络和环形网络的电磁脉冲瞬态响应的实验研究,验证了所采用的理论和仿真分析方法的有效性,这些结果对进一步研究传输线网络对电磁脉冲的响应规律和防护技术具有指导意义。
Electromagnetic Pulse (EMP) can cause interference, potential failure or permanent damage to the signal lines of electronic equipment, devices and systems. The transmission line and its network are the main energy coupling channels. In order to study the influence of injected electromagnetic pulse on the transmission line network The coupling rule of two kinds of networks, ring network and tree network, is studied. The electromagnetic topology theory and BLT equation are used to study the time-domain response of electromagnetic pulse in the transmission line network. Firstly, the BLT equation of transmission line network is deduced and solved. The electromagnetic topology model of tree structure and ring structure transmission line network is established. In the process of using BLT equation to solve the network node response, the paper first solves the network transfer function and then combines the time domain Convolution calculation method, the network node’s time domain response was simulated. The experimental study on the transient response of electromagnetic pulse in tree network and ring network verifies the validity of the theoretical and simulation methods. These results are instructive for further research on the response of transmission line network to electromagnetic pulse and protection technology .