一種可控高速脈沖產(chǎn)生技術(shù)的研究

提出了一種將高速脈沖信號產(chǎn)生轉(zhuǎn)換為可控直流電平產(chǎn)生、脈沖頻率信息產(chǎn)生及脈沖合成輸出的設(shè)計思想。可控直流電平控制脈沖的高低電平值；脈沖所需的頻率信息通過可編程數(shù)字信號產(chǎn)生，該數(shù)字信號控制脈沖的波形包括脈寬和延遲；而脈沖的上升/下降時間則通過調(diào)整脈沖合成電路的充放電電流來控制。產(chǎn)生脈沖最小脈寬5 ns，最大幅度7 V，電平精度0.1 V，最小上升/下降時間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.