Synthesis of precise ac voltage with SINIS Josephson junction arrays

Author

Wang, Zengmin ; Gao, Yuan ; Li, Honghui

Author_Institution

Nat. Inst. of Metrol., Beijing, China

fYear

2010

fDate

13-18 June 2010

Firstpage

207

Lastpage

208

Abstract

Based on superconductor-insulator-normal metal-insulator-superconductor (SINIS) Josephson junction arrays (JJA), an ac Josephson voltage synthesizer has been successfully developed in National Institute of Metrology (NIM), China. The root mean square (rms) value of generated ac voltage is up to 0.84 V. The frequency of synthesized voltage is up to 200 Hz and the uncertainty of synthesized voltage at 60 Hz is less than 5 parts in 10⁶. This Josephson ac waveform synthesizer mainly relies on a domestic high speed bias source which synthesizes the waveform by prompt switching of bias current for a programmable Josephson array.

Keywords

superconducting arrays; superconductor-normal-superconductor devices; voltage measurement; waveform generators; SINIS Josephson junction array; ac voltage synthesizer; ac waveform synthesizer; bias current switching; root mean square value; superconductor insulator normal metal insulator superconductor; AC generators; Circuit synthesis; Frequency synthesizers; Josephson junctions; Metrology; Microwave antenna arrays; Shape measurement; Superconducting microwave devices; Uncertainty; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM), 2010 Conference on

Conference_Location

Daejeon

Print_ISBN

978-1-4244-6795-2

Type

conf

DOI

10.1109/CPEM.2010.5544134

Filename

5544134