计量学报2024，Vol.45Issue(5)：619-625,7.DOI:10.3969/j.issn.1000-1158.2024.05.02
基于量子电压的模数转换器性能评估
Characterizing the Analog-to-digital Converter with Quantum Voltages
摘要
Abstract
Different from the conventional signal source made by semiconductor artifacts,Josephson arbitrary waveform synthesizer(JAWS)based on the macroscopic quantum effect can be traced to Josephson's constant,hence its waveform has ultra-low noise and ultra-low distortions.The performance of the National Instruments 24-bit digitizer PXI 5922 is evaluated by using a Josephson arbitrary waveform generator.The zero-compensation waveform synthesis method is used to simplify the system hardware structure,and high-precision,multi-scale inductive voltage dividers are used to improve evaluation efficiency.Firstly,calibrations of the gain,stability,signal-to-noise ratio,spurious-free dynamic range,total harmonic distortion,signal-to-noise and distortion ratio,and the effective numbers of bits,are presented,where the frequencies are up to 10 kHz.Secondly,the phase differences between the two channels of PXI 5922 are calibrated.Finally,according to the harmonic characteristics of the power grid,the amplitude and phase responses of harmonics within the 12th are calibrated with the fundamental frequency of 60 Hz.With outstanding accuracy and wide bandwidth,JAWS is valuable in evaluating high-precision analog-to-digital converters.关键词
电学计量/模数转换器/约瑟夫森任意波形发生器/零补偿/感应分压器Key words
electrical measurement/analog-to-digital converters/JAWS/zero-compensation method/inductive voltage divider分类
通用工业技术引用本文复制引用
梁起铭,韩琪娜,施杨,周琨荔,杨雁,徐睿,金尚忠,赵建亭,屈继峰..基于量子电压的模数转换器性能评估[J].计量学报,2024,45(5):619-625,7.基金项目
国家重点研发计划(2021YFF0603702) （2021YFF0603702）
国家市场监督管理总局科技创新人才计划(QNBJ202301) （QNBJ202301）
中国计量科学研究院基本科研业务费(AKYRC2201,AKYRC2309) （AKYRC2201,AKYRC2309）
国家自然科学基金(51877202和61971471) （51877202和61971471）
