带阻性负载细导线对电磁脉冲响应的有限差分算法

在原始的FDTD细线算法基础上，把带负载细导线模型分成导线、电阻和吸收三个部分，分别用不同的偏微分方程描述，使其可以处理两端带有纯电阻性负载细线电磁脉冲散射问题，进而得到电阻负载上消耗的总能量及对应的功率消耗。用该方法计算得到的结果与文献结果进行了比较，证明了该方法的有效性。最后用此方法对一种典型情况进行了计算，并对结果进行了分析。该方法是对FDTD方法中细线算法的补充和提高，经过修改也可以用于非阻性负载的情况。

Elementary analysis on breakdown phenomenon of coaxial-cable and connector

In this paper, the experimental method of HPM breakdown of coaxial-cable and connector is introduced. It is given by experimentaly that the microwave breakdown thresholds of several kinds of coaxial-cables and connectors vary with microwave frequency, pulse width, repetitive frequency and burst duration. Breakdown power threshold increases as pulse width (30 ns~1 μs) decreases, and an inflexion appear at about 100 ns. In low repetitive frequency region, i.e, from single pulse to 1 kHz, the repetitive rate of microwave pulse literally has no effect on breakdown power. Microwave frequency tuned from 2.856 GHz to 9 37 GHz, no significant change of breakdown power level is observed. When the pulse width becomes as narrow as tens of nanoseconds, the breakdown power varies little even though the burst duration is adjusted in relatively large scale. However, as long as the microwave pulse width is widened to over one hundred nanoseconds, breakdown threshold falls down continuously and dramatically.