Sampling measurements of low-frequency waveforms based on the Josephson voltage standard

Author

Kim, Mun-Seog ; Kim, Kyu-Tae ; Kim, Wan-Seop ; Chong, Yonuk ; Kwon, Sung-Won

Author_Institution

Korea Res. Inst. of Stand. & Sci., Daejeon, South Korea

fYear

2010

fDate

13-18 June 2010

Firstpage

179

Lastpage

180

Abstract

A waveform synthesizer adopting a superconductor-normal metal-superconductor junction array has been developed, which can generate arbitrary stepwise waveforms with a number of the quantum-voltage steps up to 1-V level amplitude. As an application of the synthesizer, we have built a sampling voltmeter which measures the differential voltages between a sinusoidal waveform produced by a semiconductor-based ac source and the Josephson waveforms. We carried out extensive sampling measurements for a 50-Hz sine wave with 1-V amplitude, applying various sampling apertures.

Keywords

Josephson effect; frequency standards; signal sampling; superconducting arrays; superconductor-normal-superconductor devices; voltage measurement; voltmeters; waveform generators; I-V amplitude; Josephson voltage standard; arbitrary stepwise waveform genneration; frequency 50 Hz; frequency measurement; quantum voltage steps; sampling voltmeter; superconductor- normal metal-superconductor junction array; waveform synthesizer; Apertures; Distortion measurement; Electromagnetic measurements; Josephson junctions; Measurement standards; Sampling methods; Standards development; Synthesizers; Voltage; Voltmeters;

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.2010.5543494

Filename

5543494