电子科技
電子科技
전자과기
IT AGE
2011年
11期
6-8
,共3页
超宽带雷达%脉冲发生器%雪崩三极管%窄脉冲
超寬帶雷達%脈遲髮生器%雪崩三極管%窄脈遲
초관대뢰체%맥충발생기%설붕삼겁관%착맥충
ultra wideband%pulse generator%avalanche transistor%ultra-short pulse
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。
介紹瞭UWB雷達的人體生命探測繫統的工作原理,比較瞭幾種窄脈遲產生方法的優缺點,詳細分析瞭雪崩三極管原理,利用雪崩三極管的雪崩特性實現瞭超寬帶雷達窄脈遲的產生。通過研究分析典型的脈遲產生電路,給齣瞭產生人體生命探測繫統的脈遲信號髮生器的電路,最後由實驗倣真結果可得,電路可生成脈寬為皮秒級的雙極性脈遲,脈遲的峰-峰值達2 V的窄脈遲信號,滿足瞭微功率遲擊雷達繫統用于生命信號探測的要求。
개소료UWB뢰체적인체생명탐측계통적공작원리,비교료궤충착맥충산생방법적우결점,상세분석료설붕삼겁관원리,이용설붕삼겁관적설붕특성실현료초관대뢰체착맥충적산생。통과연구분석전형적맥충산생전로,급출료산생인체생명탐측계통적맥충신호발생기적전로,최후유실험방진결과가득,전로가생성맥관위피초급적쌍겁성맥충,맥충적봉-봉치체2 V적착맥충신호,만족료미공솔충격뢰체계통용우생명신호탐측적요구。
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.
