Flux-quantizing superconducting analog to digital converter (ADC)
US7365663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2006 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | Aug 24, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/60
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A superconducting analog-to-digital converter includes a superconducting input loop to which is applied an analog voltage to be converted to a digital format. The superconducting loop includes two Josephson junctions for converting said analog input voltage into a single flux quantum (SFQ) pulse stream having a frequency f1 which is directly proportional to the amplitude of the analog input voltage. The loop includes two outputs for distributing the pulse stream in a cyclical and staggered fashion onto the two loop outputs such that the frequency of the pulses along each one of the loop outputs is f½. Additional frequency divider circuits may be coupled to the loop outputs to produce pulse streams on N output lines having a frequency of f1/N.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.