Title :
The 10 volt fixed frequency Josephson voltage standard at UME-Ulusal Metroloji Enstitusu
Author :
Selcik, S. ; Akyel, B. ; Gutmann, P.
Author_Institution :
Ulusal Metroloji Enstitusu-UME, Kocaeli, Turkey
Abstract :
The 10 Volt fixed frequency Josephson voltage standard (FFJVS) at UME, Turkey is described. The FFJVS is based on the PTB designed Josephson junction array and works with a fixed frequency phase-locked Gunn oscillator using a rubidium clock reference. The system is consisted with the national volt of Turkey with a relative uncertainty of 8/spl times/10/sup -9/ at 10 Volt.
Keywords :
Gunn oscillators; measurement uncertainty; phase locked oscillators; phase noise; superconducting junction devices; transfer standards; voltage measurement; 10 V; DC control circuit; Josephson junction array; fixed frequency Josephson voltage standard; minimum voltage noise; national volt of Turkey; phase-locked Gunn oscillator; relative uncertainty; rubidium clock reference; switching assembly; Circuit testing; Frequency; Gunn devices; Josephson junctions; Microwave oscillators; Phase noise; Voltage control; Voltage measurement; Voltage-controlled oscillators; Voltmeters;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.700053
