Sub-10 picosecond differential TDR and TDT pulse source
Sub-10 picosecond differential TDR and TDT pulse source
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亚 10 皮秒差分 TDR 和 TDT 脉冲源
DOI：
10.1109/arftgf.2003.1459748
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
K. Schoen
中科院分区：
文献类型：
--
作者：
K. Schoen
建立了一个9ps差分时域反射（TDR）和时域传输（TDT）源，并对其进行了表征。这种新的差分脉冲源能够产生正脉冲和负脉冲，用于差分和共模分析。该模块连接到触发源，例如较慢的商用TDR/TDT插件，并使用非线性在线传输（NLTL）电路来减少脉冲上升时间。用70 GHz采样插件捕获的TDR脉冲的测量上升时间约为12 ps，幅度为200 mV。对时序抖动和采样器上升时间的影响进行反卷积后，TDR上升时间约为9ps。测试电路板的TDR测量结果显示，双事件分辨率小于1.5 mm。计算表明，氧化铝的分辨率限制在0.5毫米左右。用70 GHz采样插件测量的TDT脉冲的上升时间约为10 ps（反卷积7 ps），幅度超过2 V。TDT信号的较大脉冲幅度可以改善远端串扰测量的信号裕度。
A 9 ps differential time domain reflectometry (TDR) and time domain transmission (TDT) source has been built and characterized. This new differential pulse source is capable of producing both positive and negative pulses for differential and common mode analysis. The module connects to a trigger source, such as a slower commercial TDR/TDT plug-in, and uses nonlinear-transmission-line (NLTL) circuits to reduce the pulse risetime. TDR pulses captured with a 70 GHz sampling plug-in have a measured risetime of approximately 12 ps and an amplitude of 200 mV. Deconvolving the effects of timing jitter and sampler risetime yields a TDR risetime of approximately 9 ps. TDR measurements of a test circuit board show two-event resolution of less than 1.5 mm. Calculations suggest a resolution limit of around 0.5 mm on alumina. TDT pulses measured with a 70 GHz sampling plug-in have a risetime of approximately 10 ps (7 ps deconvolved) with an amplitude of over 2 V. The larger pulse amplitude of the TDT signal enables improved signal margin for far-end cross talk measurements.