Coded data generation or conversion – Analog to or from digital conversion – With particular solid state devices
Patent
1997-08-29
1999-08-24
Hoff, Marc S.
Coded data generation or conversion
Analog to or from digital conversion
With particular solid state devices
341171, H03M 112
Patent
active
059429976
ABSTRACT:
A correlated superconductor single flux quantum oscillator-counter analog-to-digital (A/D) converter has a superconducting quantum interference device (SQUID) quantizer 20 with two Josephson junctions 24 and 26, each connected to a digital sampling and counting circuit with synchronized timing to increase the sampling rate or the bit resolution of the A/D converter. In a preferred embodiment, a plurality of SQUID quantizers 60 . . . 72 each with two Josephson junctions 74 . . . 88 are connected to a counter structure with precisely synchronized timing to further increase the sampling frequency and/or the bit resolution. A counter structure preferably comprises multiple rows 218, 240, 254 of single flux quantum flip-flops 220 . . . 234, 242 . . . 248, 256, 258 and parallel-serial converter/shift registers 236 250, 260 to produce an output digital data stream in serial form.
REFERENCES:
patent: 4879488 (1989-11-01), Silver
patent: 5396242 (1995-03-01), Lee
patent: 5858373 (1998-10-01), Semenov et al.
Durand Dale J.
Silver Arnold H.
Hoff Marc S.
Jean-Pierre Peguy
TRW Inc.
Yatsko Michael S.
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