一种可控高速脉冲产生技术的研究

提出了一种将高速脉冲信号产生转换为可控直流电平产生、脉冲频率信息产生及脉冲合成输出的设计思想。可控直流电平控制脉冲的高低电平值；脉冲所需的频率信息通过可编程数字信号产生，该数字信号控制脉冲的波形包括脉宽和延迟；而脉冲的上升/下降时间则通过调整脉冲合成电路的充放电电流来控制。产生脉冲最小脉宽5 ns，最大幅度7 V，电平精度0.1 V，最小上升/下降时间2 ns。Abstract A methodology for generating high-speed pulses is discussed in this paper. In this scheme, the generation of high-speed pulses is transformed into the generation of controllable DC voltage and frequency information of pulses and into the pulse composition. The controllable DC level controls the level of high and low levels of pulses. The frequency information of pulses is generated by programmable data sequence which controls the pulse width and delay. The rising- and falling-times of pulses are adjusted through changing the charging and discharging currents of the synthesizing pulse circuit. The generated pulse is specified by the minimum pulse width: 5 ns, the maximum swing: 7 V, the accuracy of pulse level: 0.1 V, and the rising or falling transition time: 2 ns.