【作者】 胡建人； 章坚武； 张数明；

【Author】 Hu Jianren Zhang Jianwu Zhang Shuming (Institute of Communication and Information System Hangzhou Dianzi University Hangzhou 310037 China)

【机构】 杭州电子科技大学通信与信息系统研究所；

【摘要】 分析与研究激光二极管LD超窄光脉冲产生电路与PCB板设计及工艺。缩短回路走线长度和所围面积,减少PCB板焊接表面毛刺,减小高频下的电阻和分布电容、电感。提高晶体管在实际工作频率下的交流放大倍数,加速起动速度,缩短脉冲上升沿时间。避免LD并联电容,可改进拖尾效应。更多还原

【Abstract】 It analyses and researches the laser diode LD electric circuits that create the very narrow light pulse and PCB design and its techniques.It shortens the line length and gets less sections around circuits,smoothes the PCB surface,reduces electric resistance,distributing capacity and inductance under super-high frequency.It accelerates start speed and shortens pulse leading-edge time with the enough high transistor a.c.amplifying coefficient at actual working frequency..The LD avoids parallel electric capacity for tailing-edge improvement.更多还原