›› 2011, Vol. 24 ›› Issue (11): 6-.

• 论文 • 上一篇    下一篇

一种UWB雷达脉冲信号发生器的设计

李秀贵,倪原   

  1. (西安工业大学 电子信息工程学院,陕西 西安 710032)
  • 出版日期:2011-11-15 发布日期:2011-11-25
  • 作者简介:李秀贵(1985—),男,硕士研究生。研究方向:通信与信号处理。倪原(1955—),男,教授。研究方向:信息处理与智能控制。
  • 基金资助:

    陕西省教育厅专项科技基金资助项目(05JK225)

Design of an Ultra Wideband Radar Pulse Generator

 LI Xiu-Gui, NI Yuan   

  1. (School of Electronic Information Engineering,Xi'an Technological University,Xi'an 710032,China)
  • Online:2011-11-15 Published:2011-11-25

摘要:

介绍了UWB雷达的人体生命探测系统的工作原理,比较了几种窄脉冲产生方法的优缺点,详细分析了雪崩三极管原理,利用雪崩三极管的雪崩特性实现了超宽带雷达窄脉冲的产生。通过研究分析典型的脉冲产生电路,给出了产生人体生命探测系统的脉冲信号发生器的电路,最后由实验仿真结果可得,电路可生成脉宽为皮秒级的双极性脉冲,脉冲的峰-峰值达2 V的窄脉冲信号,满足了微功率冲击雷达系统用于生命信号探测的要求。

关键词: 超宽带雷达;脉冲发生器;雪崩三极管;窄脉冲

Abstract:

This paper mainly introduces the operating principle of human life detection system using UWB radar,and compares several methods on ultra-short pulses generating.Taking into consideration the avalanche transistor principle,this paper comes up with using the avalanche characteristics of the avalanche transistor to achieve ultra-wideband radar ultra-short pulse generating principle.Through researching and analyzing the typical pulse generating circuit,this paper works out the pulse signal generator circuit on detection system of human life.Experimental simulation results show that:the circuit can generate a pico-second bipolar pulse and peak-up of the narrow pulse can reach up to 2 V.It can meet the micro power impulse radar system which can be applied in the field of life signal detection requirements.

Key words: ultra wideband;pulse generator;avalanche transistor;ultra-short pulse

中图分类号: 

  • TN958