研究目的
Investigating a divider architecture and measurement method to scale arbitrary waveforms to spectrally pure Josephson Voltage Standards (JAWS) to improve voltage scale traceability to quantum standards.
研究成果
The study presents a divider architecture and measurement method for scaling arbitrary waveforms to spectrally pure Josephson Voltage Standards, with simulations and preliminary measurements showing promising results. Future work includes improving measurements by employing differential measuring with a stable sampling source synchronous with input and using quantum voltmeters.
研究不足
The study mentions that the flatness in the 40 Hz – 10 kHz range is around 10 μV/V, but it is worse below 40 Hz and over 10 kHz, indicating limitations in frequency range. The reason for this will be investigated further.
1：Experimental Design and Method Selection:
The study involves simulations to investigate the divider architecture and measurement method, followed by the construction of a prototype divider and preliminary measurements.
2：Sample Selection and Data Sources:
Simulations are conducted in Matlab environment with randomly changed resistance values within expected deviations.
3：List of Experimental Equipment and Materials:
Non-capacitive and non-inductive SMD resistors, FR4 PCB for the prototype divider.
4：Experimental Procedures and Operational Workflow:
The divider architecture is simulated to determine ideal ratios and measure ratios using a circuit simulating the measuring device. The prototype is then constructed and preliminary tests are conducted.
5：Data Analysis Methods:
The difference between ideal and measured ratios is analyzed to determine the correctness of the method.
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