Title :
Single-flux-quantum counters for advanced Josephson primary voltage standards
Author :
Pambianchi, Michael S. ; Li, Wenquan ; Coughlin, John ; Talej, Elie N.
Author_Institution :
HYPRES Inc., Elmsford, NY, USA
fDate :
4/1/1999 12:00:00 AM
Abstract :
Josephson primary voltage standards require a frequency-locked 77 GHz signal to perform precise frequency-to-voltage conversion. We describe the development of superconducting frequency counters used for microwave source locking in Josephson junction array primary voltage standards, and discuss design challenges and high speed test results. The counters increase the accessibility of Josephson standards by reducing the size, number of components, and cost of these systems
Keywords :
counting circuits; measurement standards; superconducting junction devices; voltage measurement; voltage-frequency convertors; 77 GHz; Josephson junction array primary voltage standard; frequency locking; frequency-to-voltage conversion; microwave source; single-flux-quantum counter; superconducting frequency counter; Circuit synthesis; Counting circuits; Frequency conversion; Frequency synthesizers; Josephson junctions; Pulse amplifiers; Radiation detectors; Signal synthesis; Temperature; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
