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Research for High-Speed Wareform Measurement Algorithms

高速Wareform测量算法研究

基本信息

批准号：
11650415
负责人：
KOBAYASHI Haruo
金额：
$ 2.24万
依托单位：
Gunma University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650415/
关键词：
Waveform Measurement Algorithm jitter Sampling AD Converter DA Converter Track Hold Circuit

项目摘要

We have performed the research for ultra-high-speed waveform measurement algorithms which are especially used for waveform sampling technology, and these algorithms will be required in next generation waveform measurement instruments for high-speed and high-frequency information and communication systems. We have obtained the following results :(1) We have derived explicit formulas for finite aperture time effects in waveform sampling systems. In waveform sampling systems, ideally the sampling should be performed instantaneously, however it takes some time (which is called "aperture time") and this finite aperture time degrades the waveform sampling accuracy. We have derived the relationship between finite aperture time and sampling accuracy, and we have confirmed this result by numerical simulation.(2) We have derived explicit formulas for aperture jitter effects in waveform sampling systems. In actual waveform sampling systems, the rising edge of the sampling clock fluctuates, which is called "aperture jitter", and this aperture jitter degrades the waveform sampling accuracy. We have derived the relationship between aperture jitter and sampling accuracy, and we have confirmed this result by numerical simulation as well as experiments.(3) We have derived new algorithms to evaluate the performance of the sampling circuits.(4) We have derived explicit formulas for dynamic power dissipation of track/hold circuits.(5) We have derived explicit formulas for channel mismatch effects (such as offset, gain, timing, bandwidth, linearity) in time-interleaved AD converter systems.(6) We have derived explicit formulas for the sampling jitter effects in DA converters which are used in measurement instruments to generate various waveforms.

我们进行了超高速波形测量算法的研究，特别是用于波形采样技术的超高速波形测量算法，这些算法将需要在下一代高速高频信息通信系统的波形测量仪器中使用。得到了以下结果：(1)推导了波形采样系统中有限孔径时间效应的显式公式。在波形采样系统中，理想情况下，采样应该立即进行，但是它需要一些时间（称为“孔径时间”），并且这个有限的孔径时间降低了波形采样的精度。推导了有限孔径时间与采样精度之间的关系，并通过数值模拟验证了这一结果。(2)推导了波形采样系统中孔径抖动效应的显式公式。在实际的波形采样系统中，采样时钟的上升沿会产生波动，称为“孔径抖动”，这种孔径抖动会降低波形采样的精度。推导了孔径抖动与采样精度之间的关系，并通过数值模拟和实验验证了这一结果。(3)我们推导了新的算法来评估采样电路的性能。(4)推导出轨道/保持电路动态功耗的显式公式。(5)我们推导了时间交错AD转换器系统中信道不匹配效应（如偏移、增益、时序、带宽、线性）的显式公式。(6)我们推导了用于测量仪器中产生各种波形的数模转换器的采样抖动效应的显式公式。