Title :
Integrated High-T/sub c/ oscillator array and high resistance detector junction
Author :
Edstam, J. ; Brorsson, G. ; Stepantsov, E.A. ; Olsson, H.K.
Author_Institution :
Dept. of Phys., Chalmers Univ. of Technol., Goteborg, Sweden
fDate :
6/1/1995 12:00:00 AM
Abstract :
We have integrated an array of five High-T/sub c/ Josephson junction oscillators with a Josephson detector junction of high resistance, e.g. 25 /spl Omega/. High impedance detectors are suitable in integrated superconducting receivers. We find the output power to be sufficient to modulate the detector junction with large Shapiro steps in the frequency range 200-700 GHz. The oscillator junctions were dc-biased in parallel and integrated in an inductive high frequency coupling circuit to oscillate coherently in-phase. The high frequency coupling circuit is evaluated through its influence on the current-voltage characteristic of the Josephson junctions.<>
Keywords :
Josephson effect; high-temperature superconductors; submillimetre wave detectors; superconducting microwave devices; 200 to 700 GHz; 25 ohm; Shapiro steps; current-voltage characteristic; high resistance detector junction; high-T/sub c/ Josephson junction oscillator array; inductive high frequency coupling circuit; integrated superconducting receivers; Artificial intelligence; Coupling circuits; Detectors; Frequency; Oscillators; Sensor arrays; Signal design; Signal detection; Tunable circuits and devices; Voltage;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
