一维PN结二极管模拟程序mPND1D

在高功率瞬态源激励下 ,半导体器件的行为可由一组由电子连续性方程、空穴连续性方程和泊松方程等组成的耦合、非线性、刚性偏微分方程来描述。绝大部分的器件模拟程序只适合于器件正常工作模拟。从研究器件的烧毁机理出发 ,自行研制了一套计算机模拟程序mPND1D ,并全面介绍了一这程序。     

高功率微波激励下二极管失效和烧毁与载流子寿命的关系

利用自行编制的半导体器件一维模拟程序mP ND1D ,通过对二极管内部载流子所满足的非线性、耦合、刚性偏微分方程组进行数值求解 ,计算了二极管在高功率微波激励下失效和烧毁时吸收的能量及所需时间与器件载流子寿命的关系     

环形磁芯磁开关设计

在同时考虑磁芯与绕组间绝缘距离和磁芯横截面磁场非均匀的条件下,推导出了环形磁开关磁芯体积计算公式,并以此为基础,提出了获得最小磁芯体积的优化设计方法,利用所提出的最小磁芯体积设计方法,对一个具体的环形磁开关实例进行了计算和设计,当绝缘距离由15mm（径向和轴向绝缘距离相等）增加到45mm时,磁芯体积增长了1．2倍,径向绝缘保持15mm不变,轴向绝缘距离由15mm增加到45mm时,磁芯体积增加了20％,计算结果表明：绝缘距离是影响磁芯大小的重要因素,采取良好的绝缘方法,减小绝缘距离是降低磁开关磁芯体积的一条重要途径。     

Study on the Generation of Ultra-Wideband (UWB) High Power Microwave

The experimental study of ultra-wideband (UWB) technology, its generation and on-line measurement are presented. An experimental repetitive UWB system is designed, manufactured, and tested. High-pressure spark gap switch and its components, as well as oil spark gap switch are studied experimentally on the system. Experimental results indicate that the system operates at a 200 pps repetitive rate with a stable performance. 100 MW peak power UWB pulses are obtained on the system. Fast-time response capacitive divider is designed and fabricated, allowing for an accurate measurement of the high power UWB signal. The main issues related to the design of the switch and the UWB signal online measurement are discussed.