Oscilloscope Measurement Bandwidth Expansion Using Frequency Response Compensation

被引：0
|
作者：
Zhu, Jiangmiao [1 ]
Wang, Yifan [1 ]
Zhao, Kejia [2 ]
Wang, Yidi [1 ]
机构：
[1] Beijing Univ Technol, Fac Informat Technol, Beijing 100124, Peoples R China
[2] Natl Inst Metrol, Beijing 100029, Peoples R China
来源：
IEEE ACCESS | 2024年 / 12卷
关键词：
Bandwidth and rise time; bandwidth expansion; compensation frequency response; oscilloscope;
D O I：
10.1109/ACCESS.2024.3384381
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The bandwidth of a broadband sampling oscilloscope is a crucial performance indicator, as a result of which expanding its measurement bandwidth without altering the oscilloscope hardware has attracted considerable research attention. This study extended the oscilloscope bandwidth by compensating the oscilloscope's frequency response. First, the theoretical relationship between the oscilloscope's bandwidth, rise time, and their interdependencies were analyzed. Next, a scheme was designed to acquire the oscilloscope's frequency response and compensate it in the distortion-free transmission direction. Experimental validation conducted using the Agilent 86100C oscilloscope with the 86117A sampling module demonstrated that the bandwidth extended by 15.2 GHz after frequency response compensation, and the rise time reduced by 2.5 ps. These results confirmed the effectiveness of the proposed approach. Finally, the oscilloscope's frequency response was compared with varying degrees of compensation and the effect of this modification on the measurement of the same signal was investigated, concluded that there is a better effect when approaching complete compensation.
引用
收藏
页码：49772 / 49778
页数：7
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