ISSTT Proceedings

ISSTT Proceedings

You searched for:search icon

No Keywords
Showing 0 of items from your search. Start over 

Josephson Junction Oscillator Arrays

Authors:
Matthew J. Lewis, Dale Durand, Andrew D. Smith, Peter Hadley
Abstract:
We have studied the stability and coherence of distributed Josephson junction array oscillators both theoretically, and experimentally. Distributed Josephson oscillator arrays successfully operate above 300 GHz with microwatt power levels. The use of wavelength-long transmission lines between Josephson elements has overcome lithographic and stability difficulties plaguing earlier compact designs. In this paper, we study the dynamic stability and phase coherence of Josephson arrays. We have extended lumped array stability analysis both for more realistic embedding environments and to distributed arrays including element to element time delays. Stable oscillator operation in lumped arrays depends on both junction and drive parameters. Wide ranges of embedding impedances provide coherent output oscillations. For distributed arrays, the available oscillator output power increases with the total array size. These results are in good agreement with experimental observations. Experimentally, we have fabricated and operated a distributed array oscillator and observed at least 50 nW of power at 125 GHz using an on-chip detection circuitry.
Categories:
Miscellaneous
Year:
1991
Session:
3
Full-text:
Download a PDF of this paper.
Page Number(s):
163-178