Title :
Characterizations of High-Temperature Superconducting Step-Edge Josephson Junction Mixer
Author :
Dan Dan Bai ; Jia Du ; Yu Sheng He
Author_Institution :
Mater. Sci. & Eng., CSIRO, Lindfield, NSW, Australia
Abstract :
We report the experimental evaluation of a high-temperature superconducting (HTS) Josephson mixer. The mixer is fabricated from a HTS step-edge junction on MgO substrate. The mixer device operates as a lower side-band down-converter from a radio frequency between 6 and 10 GHz to a 1-2 GHz intermediate frequency under the action of a local oscillator. The experimental results of the current-voltage characteristics, optimal bias conditions, dynamic range, linearity, conversion gain, and the temperature dependence of the mixer are presented.
Keywords :
magnesium compounds; microwave mixers; microwave oscillators; superconducting junction devices; HTS step-edge junction; Josephson junction mixer; MgO; frequency 1 GHz to 2 GHz; frequency 6 GHz to 10 GHz; high-temperature superconducting Josephson mixer; local oscillator; radio frequency; side-band down-converter; High-temperature superconductors; Integrated circuits; Josephson junctions; Junctions; Mixers; Radio frequency; Superconducting microwave devices; High-temperature superconductor (HTS); mixer; step-edge Josephson junction;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2014.2348316
