宽带梳状谱发生器校准技术研究  

Research on the Calibration Technology for Broad-band Comb Generator

作　　者：姜河 龚鹏伟 谌贝 谢文 马红梅 杨春涛 

机构地区：[1]北京无线电计量测试研究所,北京100039

出　　处：《宇航计测技术》2014年第1期1-6,共6页Journal of Astronautic Metrology and Measurement

摘　　要：本文介绍了利用取样示波器86100C校准带宽为50GHz的梳状谱发生器U9391F的方法。该方法用70GHz取样头测量梳状谱发生器输出端时域信号,对测量到的信号进行分析,修正取样示波器测量引入的时基误差和梳状谱发生器与取样头之间的阻抗失配,修正后得到梳状谱发生器的幅度谱和相位谱,实现了梳状谱发生器的校准,并给出幅度谱与相位谱校准结果的不确定度,分别为0.5dB和0.9°。We introduce a method for 50 GHz comb generator calibration using Agilent 86100 C sampling oscilloscope. The 70 GHz sampling head measures the output time-domain signal of the comb generator. Then we correct the signal for time base error, including time base distortion, jitter and drift. By transforming the time-domain signal into frequency-domain, we obtain the amplitude and phase spec-trum. Then we acquire the calibration data we need. We also determine the uncertainties of the amplitude and the phase, which are less than 0. 5 dB and 0. 9o respectively.

关 键 词：梳状谱发生器 取样示波器 相位校准 不确定度 

分 类 号：TM935[电气工程—电力电子与电力传动]