Title :
Development of 10-Vrms sampling measurement system using AC-programmable Josephson voltage standard
Author :
Amagai, Yasutaka ; Maruyama, Mihoko ; Yamamori, Hirotake ; Shih-Fang Chen ; Fujiki, Hiroyuki ; Kaneko, Nobu-hisa
Author_Institution :
AIST, Nat. Metrol. Inst. of Japan (NMIJ), Tsukuba, Japan
Abstract :
We are developing a 10-Vrms low-frequency sampling measurement system using an AC-programmable Josephson voltage standard (AC-PJVS). Our AC-PJVS circuit is composed of NbN-based over-damped Josephson junctions cooled with a compact cooler. A PJVS chip with 524,288 junctions increases the maximum measurable root-mean-square (rms) voltage up to 10 V at a microwave bias of 15.9 GHz. We have obtained a differential waveform between the stepwise-approximated waveforms of the AC-PJVS and the sinusoidal waveforms of a calibrator.
Keywords :
calibration; cooling; electric current measurement; frequency measurement; measurement standards; microwave measurement; programmable circuits; superconducting junction devices; voltage measurement; AC-PJVS circuit; AC-programmable Josephson voltage standard; NbN-based overdamped Josephson junction; calibrator; compact cooler; differential waveform; frequency 15.9 GHz; low-frequency sampling measurement system; maximum measurable root-mean-square; sinusoidal waveform; stepwise-approximated waveform; voltage 10 V; Measurement uncertainty; Microwave measurement; Sampling methods; Semiconductor device measurement; Standards; Voltage measurement; Voltmeters; Analog-digital conversion; Electrical variable measurement; Josephson devices; Josephson effect; uncertainty;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898360
