一种基于射频三极管的高斯脉冲发生器的设计.pdf

第 26 卷第 10 期通信学报 Vo l .2 6
2005 年 10 月 Journal munications October 2005
一种基于射频三极管的高斯脉冲发生器的设计
杨峰 1,薛泉 2,陈志豪 2
(1. 电子科技大学电子工程学院,四川成都 610054;2. 香港城市大学无线通信中心,中国香港)
摘要:对一种电路简单、成本低廉且易于集成的高斯脉冲发生器进行了分析与设计。该发生器是通过一个微分
电路将触发信号转变为含有正、负脉冲信号来驱动射频三极管的“开”与“关”,并通过电容的充、放电形成窄
脉冲。测试结果显示该脉冲发生器能产生峰值电压为 ,脉冲宽度为 的高斯脉冲波形,并与仿真结果吻
合较好。该电路非常适合于 MIC。
关键词:超宽带;脉冲发生器;窄脉冲;射频三极管
中图分类号:TN784+.1 文献标识码:B 文章编号:1000-436X(2005)10-0069-03
Design of a subnonsecond Gauusisan pulse generator
based on the RF transistor
YANG Feng1,XUE Quan2,CHAN Chi-hao2
(1. School of Electronic Engineering, UESTC, Chengdu 610054, China;
2. munications Research Center, City University of Hong Kong, Hong Kong SAR)
Abstract: A simple and low cost subnonsecond Gaussian pulse generator was developed using RF transistor, chip
resistors, and chip capacitors. The generator utilized a differential circuit to convert signal from the FPGA into a pairs of
positive and negative pulses, which was then used to control the “on” and “off” states of the RF transistor, thus generating
an ultra-short pulse through the charging and discharging of the capacitor. The measured results shows that output
waveform have pulse duration and morn than from an input wave of 25MHz repetition rate. Good agreement
between the measured and calculated results is achieved. This circuits is suita