| 朱江淼,郑香蕊,赵科佳,万昭彤,郭森林,姜 燕.数字示波器宽带探头系统的校准研究[J].电子测量与仪器学报,2022,36(10):33-38 |
| 数字示波器宽带探头系统的校准研究 |
| Calibration of broadband probe system of digital oscilloscope |
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| DOI： |
| 中文关键词: 数字示波器宽带探头系统 接地共面波导 反卷积 时域测量 |
| 英文关键词:digital oscilloscope broadband probe system grounded coplanar waveguide deconvolution time domain measurements |
| 基金项目:中国计量科学研究院基本科研业务费重点领域项目资助 |
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| 中文摘要: |
| 微波射频芯片进行时域测量时,数字示波器的宽带探头是测试芯片的一个关键子系统,为准确测量芯片,必须要清楚示
波器探头系统的传输性能。 为此,设计了一种包含接地共面波导的数字示波器宽带探头校准系统,依据校准系统的信号传输特
性,用反卷积求出数字示波器宽带探头系统的频率响应,并计算其带宽,以实现对该探头系统的校准。 之后用该方法对 Keysight
Infiniimax 高频差分有源探头系统进行了校准,得到其带宽数值约为 12 GHz 与标称带宽 12 GHz 相符,表明设计的校准系统合
理可行。 |
| 英文摘要: |
| When microwave RF chips are measured in the time domain, the broadband probe of digital oscilloscope is a key subsystem
used to test the chip, and the transmission performance of the oscilloscope probe system must be clear for accurate measurement of the
chip. So, the calibration system containing a grounded coplanar waveguide is designed to calibrate a broadband probe of digital
oscilloscope. According to the signal transmission characteristics of the calibration system, the frequency response of the digital
oscilloscope broadband probe system is obtained by deconvolution, and its bandwidth is calculated, which realizes the calibration of the
probe system. The Keysight Infiniimax high-frequency differential active probe system is calibrated by this method, and the bandwidth
value of about 12 GHz is in accordance with the nominal bandwidth of 12 GHz, indicating that the calibration system is reasonable and
feasible. |
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