Title :
Josephson voltage standard using a biharmonic drive
Author :
Monaco, R. ; Andreone, D. ; Lacquaniti, V. ; Maggi, S.
Author_Institution :
Istituto di Cibernetica, CNR, Arco Felice, Italy
Abstract :
A novel approach to a Josephson voltage standard is presented. It uses as the drive signal the combination of a 10-GHz signal and its second harmonic. The effect of this biharmonic drive is to enhance the constant-voltage step amplitudes with respect to those obtained with a single-frequency drive. The optimum operating conditions are discussed, and the first experimental results obtained with Josephson devices containing both single junctions and small arrays are reported.<>
Keywords :
Josephson effect; harmonics; measurement standards; microwave measurement; superconducting junction devices; voltage measurement; 10 GHz; I-V characteristics; Josephson voltage standard; arrays; biharmonic drive; constant-voltage step amplitudes; drive signal; microwave signal; second harmonic; single junctions; Hysteresis; Josephson junctions; Law; Microwave devices; Microwave generation; Niobium; Signal generators; Stability; Superconducting devices; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements, 1990. CPEM '90 Digest., Conference on
Conference_Location :
Ottawa, Ontario, Canada
DOI :
10.1109/CPEM.1990.109945
