Superconducting digital mixer

Details Superconducting digital mixer Superconducting digital mixer

2010-03-16

2011-11-01

Wendell, Andrew (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S189100, C455S209000, C455S293000, C326S003000, C326S052000, C327S117000, C327S202000, C327S407000, C331S1070SL, C341S133000, C365S154000, C370S342000, C375S295000, C375S297000, C375S343000, C398S155000, C708S493000

Reexamination Certificate

active

08050648

ABSTRACT:
Digital mixers which permit mixing of asynchronous signals may be constructed of Rapid Single Flux Quantum (RSFQ) logic elements. The logic elements may include an RSFQ non-destructive readout cell (NDRO), an RSFQ D flip-flop, an RSFQ XOR circuit, and an RSFQ T flip-flop. A binary tree arrangement of T flip-flops can be used to provide in-phase and quadrature phase-divided replicas of a reference signal. The mixing elements can be either an XOR circuit, a dual port NDRO circuit functioning as a multiplexer or an RS type NDRO functioning as an AND gate. The RSFQ logic elements utilize Josephson junctions which operate in superconducting temperature domains.

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