Patent ID: 6483339
Filing Date: 2002-11-19
Classification: H03K

Abstract:
A superconductor circuit for passing SFQ pulses across ground plane boundaries, comprising:a superconductor toggle flip-flop for receiving SFQ pulses serially at an input and, responsive to said received SFQ pulses, for supplying SFQ pulses alternately between first and second outputs to provide first and second serial pulse streams of SFQ pulses, respectively, at said first and second outputs, respectively, in which SFQ pulses of said first serial pulse stream at said first output leads in time corresponding pulses of said second serial pulse stream at said second output; a superconductor DC transformer, said superconductor DC transformer including a primary, a secondary, said secondary being DC isolated from said primary, first and second inputs, and first and second outputs; first superconductor means for applying said SFQ pulses from said first and second outputs of said flip-flop, respectively, to said first and second inputs of said superconductor DC transformer, wherein SFQ pulses from said first serial pulse train produce current in said primary in one direction and SFQ pulses from said second serial pulse train produce current in said primary in a second direction, whereby said superconductor DC transformer reproduces each of said first and second serial pulse trains, respectively, at said first and second outputs of said superconductor DC transformer; a superconductor combiner having first and second inputs and an output; second superconductor means for applying said first and second outputs of said superconductor DC transformer, respectively, to said first and second inputs of said combiner, wherein said superconductor combiner combines said first and second serial pulse trains of SFQ pulses into a single serial pulse train of SFQ pulses to reconstitute said received SFQ pulses serially.