Electronic digital logic circuitry – Superconductor – Tunneling device
Reexamination Certificate
2011-01-11
2011-01-11
Cho, James H. (Department: 2819)
Electronic digital logic circuitry
Superconductor
Tunneling device
C326S006000, C326S007000
Reexamination Certificate
active
07868645
ABSTRACT:
In one embodiment, the disclosure relates to a single flux quantum (SFQ) signal transmission line powered by an AC power source. The AC power source supplies power to a transformer having a primary winding and a secondary winding. The primary winding receives the AC signal and the secondary winding communicates the signal to the SFQ transmission line. The transmission line can optionally include an input filter circuit for receiving the incoming SFQ pulse. The filter circuit can have a resistor and an inductor connected in parallel. In an alternative arrangement, the filter circuit can comprise of an inductor. A first Josephson junction can be connected to the filter circuit and to the secondary winding. The Josephson junction triggers in response to the incoming SFQ pulse and regenerates a pulse signal in response to a power discharge from the secondary winding.
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Baumgardner James E.
Herr Anna Y.
Herr Quentin P.
Cho James H.
Crawford Jason M
Northrop Grumman Systems Corporation
Tarolli, Sundheim Covell & Tummino LLP
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