Superconducting analog to digital converter

Details Superconducting analog to digital converter Superconducting analog to digital converter

1988-11-22

1990-09-11

Shoop, Jr., William M.

Coded data generation or conversion

Analog to or from digital conversion

With particular solid state devices

341171, 307306, H03K 1302

Patent

active

049566423

ABSTRACT:
A superconducting analog to digital converter comprises a plurality of comparators, each of which includes a quantum flux parametron having a superconducting loop with two Josephson devices and exciting inductors, a first load inductor connected to the superconducting loop, and means for supplying exciting current to inductors inductively coupled with said exciting inductors and an rf-SQUID comprising a superconducting loop with a second load inductor and a Josephson device, whereby an input signal is converted to a positive or negative signal by the rf-SQUID for each unit change of the input signal by the amount of the magnetic flux quantum and then the converted signal is sampled and amplified by the quantum flux parametron.

REFERENCES:
patent: 2949602 (1960-08-01), Crowe
patent: 4315255 (1982-02-01), Harris et al.
patent: 4551704 (1985-11-01), Anderson
patent: 4623804 (1986-11-01), Goto
patent: 4785426 (1988-11-01), Harada et al.

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