Title: Picosecond pulse generator utilizing a Josephson junction

Abstract: A picosecond pulse generator for producing pulses having widths in the or of 10.sup.-12 seconds utilizes a Josephson junction that has an external load resistor connected in shunt therewith by a balanced transmission line. The Josephson junction is driven by a high frequency oscillator, and the AC current, I.sub.1, flowing through it is adapted to have its amplitude varied with respect to I.sub.c, the critical current of the junction. As the value of I.sub.1 /I.sub.c exceeds one and increases, first a single and then an increasing number of picosecond pulses are produced during each half cycle of the high frequency oscillator.

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Inventors: McDonald, Donald G. (Boulder, CO, US)
Peterson, Robert L. (Boulder, CO, US)

Application Number: 862311
Filing Date: 1977-12-20
Publication_date: 1979-09-18
Assignee: The United States of America as represented by the Secretary of the Navy (Washington, DC)
Primary Class(es): 327/186 257/36, 327/100, 327/528, 331/107S, 505/864
Other Classes:
US Patent Ref:

3506913	Apr, 1970	Lambe et al.	307/306.
3573662	Apr, 1971	Fulton	307/306.
3573759	Apr, 1971	Silver et al.	307/306.
3725819	Apr, 1973	Fulton	307/306.
3758854	Sep, 1973	Zimmerman	307/306.

Other Refs:
Primary Examiner: Zazworsky, John
Assistant Examiner:
Attorney: Sciascia; R. S., Shrago; L. I., Vautrain, Jr.; C. E.