Superconducting analog to digital converter
US4956642A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1988 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | Nov 22, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/368
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.