Sampler and method of measuring a waveform of a current with jitters reduced
US6922066B2 · kind B2 · utility
13Cited by
14References
15Claims
0Family size
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Key dates
| Filing date | Jul 16, 2002 |
| Grant date | Jul 26, 2005 |
| Priority date | — |
| Expiry date | Sep 23, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/2509
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a sampler for use in measuring a waveform of an electric signal, a measurement target current is given as the electric signal to a sampler chip 11 and is also used to produce a trigger current Itr for determining measurement timing on the sampler chip. A comparator 20 compares a sum of a feedback current, a current derived from the measurement target current, and the trigger current Itr with a threshold value to produce an SFQ pulse when the sum exceeds the threshold value. The SFQ pulse produced by the comparator is observed or counted for a predetermined duration to measure the waveform of the electric signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.