Nonhysteretic periodic-threshold SQUID comparator and A/D converter
US4977402A · kind A · utility
14Cited by
2References
15Claims
0Family size
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Inventor
Key dates
| Filing date | Oct 24, 1988 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Oct 24, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/846
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A SQUID comparator having two junctions configured so that its operating characteristics are substantially the same as a single junction SQUID. In particular, the ratio of the critical current of these two junctions is selected to avoid introduction of hysteresis. An n-bit single pass comparator is present that can produce 4-bit A/D conversion up to 10 GHz. A method is implemented to remove effects of dynamic hysteresis by use complementary comparators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.