Title :
Nonlinear mixer gain calculations for Josephson junctions
Author :
How, Hoton ; Fang, Ta-Ming ; Vittoria, Carmine ; Widom, Allen
Author_Institution :
Massachusetts Technol. Lab. Inc., Belmont, MA, USA
fDate :
1/1/1995 12:00:00 AM
Abstract :
We have numerically solved the steady-state solutions of the initial value problem associated with a current-driven Josephson weak-link junction shunted by an ohmic resistance. The nonlinear mixing action of the junction leads to Shapiro steps in the DC response with step height in units of the mixing frequency. Mixer gains have been calculated with a wide range of parameter values and intrinsic chaos is observed whenever Shapiro steps are prevalent
Keywords :
Josephson effect; amplification; chaos; initial value problems; mixers (circuits); superconducting junction devices; DC response; Josephson junctions; Shapiro steps; current-driven Josephson weak-link junction; initial value problem; intrinsic chaos; nonlinear mixer gain calculations; ohmic resistance shunt; steady-state solutions; Chaos; Circuits; Differential equations; Frequency; Josephson junctions; Local oscillators; Noise shaping; Phase noise; Steady-state; Superconducting device noise;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
