应用于超宽带穿墙雷达的极窄脉冲发生器设计  

Design of Ultra-narrow Pulse Generator in Ultra-wideband Through-wall Radar

作　　者：王帮耀[1] 刘晓云[1] 

机构地区：[1]电子科技大学自动化工程学院,四川成都610054

出　　处：《现代电子技术》2008年第19期7-9,12,共4页Modern Electronics Technique

摘　　要：介绍了一种可用于超宽带(UWB)穿墙雷达的脉冲发生电路,讨论并分析了UWB中几种常用窄脉冲产生方法的特点及其局限性。基于雪崩三极管和射频双极性晶体管的雪崩特性,设计并制作了UWB脉冲电路发生器,指出电路中需要注意的事项及改进脉冲性能的方法,并获得亚纳秒级的超短、快速前沿的单极性UWB脉冲,幅度为28 V,宽度为0.95 ns。A pulse generator used in through -wall Ultra Wideband （UWB） radar is introduced. Several kinds of commonly used narrow pulse generating methods are presented and their merits and limitations are analysed. Based on the avalanche characteristic of avlanch transistor and RF- BJT,sub -nanosecond UWB pulse is designed and fabricated with satisfying result Of 28 V amplitude and pulse width of 0.95 ns. Key points and improvements are also discussed.

关 键 词：超宽带 纳秒 脉冲发生器 雪崩特性 穿墙雷达 射频三极管 

分 类 号：TN911[电子电信—通信与信息系统]