超宽带皮秒级脉冲发生器.doc

超宽带皮秒级脉冲发生器.doc兵 工 学 报
No. 10
ACTA
Oct. 2007
第28卷第10期
2 0 0 7年10月
超宽带皮秒级脉冲发生器
纪建华，费元舂，周建明，郭德淳，赵对
〈北京理工大学信息科学技术学院，北点100081)
摘要：设计了 一种超•寛带离斯脉冲的分冲发生器，此脉冲发生器主要由阶跃恢复二圾管,FET 管和肖特基二极管姐成。其中阶跃恢复二毀管朽短路线用来产生獗冲，FET管用来进行脉冲的放 大和••脉冲产生、脉冲整形两部分电鸳问的隅爲，肖將基二极管用来城小脉冲的振铃。利用ADS软 件对阶跃恢复二极管进行建fi(，并用其进行咏冲发生器的设计仿真。测试结-果表明■皮秒脈冲发生 器対脉冲寛度为3O7ps, ，页且振铃小，实验站杲与仿真结果 吻合得很好。
关键词：电子技术；超宽带；皮秒级；髙斯脉沖发生赛；阶跃恢复二极管；spie模型
中图分类号：TN92 文献标志码：A 文章编号：1000-1093(2007)-03
Ultra-wideband Subnanosecond Pulse Generator
JI Jian-hua, FEI Yuan-chun, ZHOU Jian-ming. GUO De-chun, ZHAO Qi
(School of Information Science and Technology, Beijing Institute of Technology, Beijing 10008L China)
Abstract： A new ultra-wideband(UWB) Gaussian pulse generator composed of a step recovery diode (SRD). a field-effect transistor (FET) and a Schottky diode was developed. A SRD and a short-circuited transmission line are used to generate Gaussian pulse di reedyt a FET is employed to amplify the pulse and isolate pulse generation and shaping network, a Schottky diode is used to suppress the pulse ringing. A SRD model, which is used to simulate the pulse generator, was established by an existing radiofrequency software ADS. and the pulse generator was designed and simulated by the model- The lesling result shows (hat lhe generator can produce a 307 ps Gaussian pulse with V peak-to-peak; lhe pulse Las guud