一种新型的漂移阶跃恢复二极管脉冲源设计  

Design of a novel pulser based on DSRD

作　　者：周斌[1,2] 刘丽华[1] 方广有[1] 

机构地区：[1]中国科学院电磁辐射与探测技术重点实验室,北京100190 [2]中国科学院大学,北京100190

出　　处：《电子设计工程》2013年第24期178-180,183,共4页Electronic Design Engineering

基　　金：国家高技术研究发展计划项目(863计划)(2007AA12Z124)

摘　　要：提出了一种基于漂移阶跃恢复二极管(DSRD)、结构简单的新型大功率脉冲源电路。论述了阶跃恢复二极管的快速开关特性,分析了该新型脉冲源电路的工作原理,并进行了实验测试。实验结果表明,脉冲源电路能够产生峰峰值为760 V、脉宽(10%-10%)8 ns的平衡输出脉冲信号,具有脉冲重频高、振铃小、波形质量高、无需高压供电等特点,适用于深层探测超宽带时域脉冲探地雷达系统。A novel, compact high-power balanced output pulse generating method basing on the drift step recovery diode （DSRD） is presented. The rapid switching characteristics of the DSRD are described in detail. The principle of the circuit is analyzed, and tested by experiments as well. The measured results show that the output waveform of the pulser has 760 V peak-to-peak amplitude and 10 ns pulse duration （10%-10%） with a high pulse repetition frequency, very small ringing, high waveform quality and no high voltage power supply. The designed pulser is very suitable for long range time domain impulse ground-penetrating radar systems.

关 键 词：超宽带雷达 探地雷达 漂移阶跃恢复二极管 平衡输出脉冲源 

分 类 号：TN952[电子电信—信号与信息处理]