实时宽带示波器在快沿脉冲测量中的应用详解.PDF

第53卷 第11期 电讯技术 Vol.53摇 No.11 2013年11月 Telecommunication Engineering Nov. 2013 doi:10.3969/ j.issn.1001-893x.2013.11.024 实时宽带示波器在快沿脉冲测量中的应用* ** 黄坤超 ,张靖悉,周摇 烨 (中国西南电子技术研究所,成都610036) 摘摇 要:脉冲信号的广泛应用使得对其测量准确度提出更高要求,而脉冲信号上升沿变窄的趋势则 增加了测量难度。 为了更精确地测量脉冲信号并保证测量结果准确可靠,分析了高性能实时宽带示 波器在带宽、采样率、底噪、电缆去嵌和匹配校准快沿脉冲等方面的优点,讨论了其用于脉冲信号测 量和校准所具有的无可比拟的精准性,说明了其作为脉冲信号测量和脉冲参数计量具有无可替代的 作用。 最后通过一个实例介绍了对10 ps 以内快沿脉冲进行测量和校准的方法。 关键词:脉冲信号测量;快沿脉冲;高性能实时宽带示波器;脉冲参数计量 中图分类号:TN06;TB973摇 摇 文献标志码:A摇 摇 文章编号:1001-893X(2013)11-1532-05 Application of Real-time Wideband Oscilloscope in Fast-edge Pulse Measurement HUANG Kun-chao,ZHANGJing-xi,ZHOU Ye (Southwest China Institute of Electronic Technology,Chengdu610036,China) Abstract:The extensive application of pulse signal requires more accurate measurement.Meanwhile,in鄄 creasing short of rise time adds to the difficulty of measurement.To make the measurement more accurate and ensure the measurement result reliable,this paper analyzes the advantages of high performance real- time wideband oscilloscopesin bandwidth,sampling rate,background noise,cable de-embedding andfast- edge pulse for calibration,discussesthe overwhelming precisionwhen the oscilloscopesare usedfor meas鄄 urement andcalibrationof pulse signal,andexplainsthatthey play anirreplaceableroleinpulsemeasure鄄 ment and calibration.Finally,it introduces a method for measurement and calibration of fast-edge pulse within 10 ps rise time through an example. Key words:pulsemeasurement;fast-edgepulse;highperformancereal-timewidebandoscilloscope;pulse鄄 metrology 1摇 引摇 言 跟上脉冲边沿变快的节奏,传统的高速脉冲信号的 脉