一种基于双三极管并联的UWB窄脉冲发生器  

An UWB Narrow-Pulse Generator Based on Dual Parallel Triodes

作　　者：李宇[1] 路崇[2] 叶威[2,3] 谭洪舟[2,3] 

机构地区：[1]广东药科大学信息工程学院,广州510006 [2]中山大学信息科学与技术学院,广州510006 [3]广东顺德中山大学卡耐基梅隆大学国际联合研究院,广东顺德528300

出　　处：《电子器件》2017年第2期333-336,共4页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61473322;81570904)

摘　　要：脉冲产生器是IR-UWB通信系统的重要组成模块之一。提出了一种高可靠性的窄脉冲发生电路。该脉冲产生电路基于并联的双射频三极管所产生的雪崩效应与LC电路阻尼原理,产生一阶微分高斯脉冲波形。双三级管的并联设计加速了雪崩效应,降低了工作电压,易于电路实现。当其中单只三极管损坏时,电路仍然可以依靠另一只进行工作。实验测试结果表明:该电路所产生的脉冲峰峰值约为12.88 V,脉冲宽度约为1.6 ns,可以用于IR-UWB通信系统。The pulse generator plays a fundamental role in the Impulse Radio Ultra-wideband（IR-UWB）communication system.A narrow pulse generator with a high reliability for UWB is proposed,which is based on the avalanche effect of dual parallel triodes and the active damping of LC resonance.The first-derivative Gauss pulses are produced.The coupling of triodes leads to an acceleration on the avalanche effect and lowers the required supply voltage,while the implementation is simplified.Even one of the double triodes gets damaged,the other one is able to accomplish the pulse generation.The simulation and experimental results show that the produced pulse of this generator reaches a peak-to-peak voltage at 12.88 V and the pulse width is 1.6 ns.Finally the proposed circuit is proved to collaborate with the IR-UWB communication system.

关 键 词：超宽带 脉冲发生器 一阶微分高斯脉冲 双并联三极管 

分 类 号：TN782[电子电信—电路与系统]