Signal integrity measurement systems and methods using a predominantly digital time-base generator
US7681091B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 12, 2007 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Mar 15, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/31727
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Signal-integrity measurement systems and methods utilizing unique time-base generation techniques for controlling the sampling of one or more signals under test. A time-base generator made in accordance with the present disclosure includes a phase filter and modulation circuitry that generates a rapidly varying phase signal as a function of the output of a sigma-delta modulator. The phase filter filters unwanted high-frequency phase components from the rapidly varying phase signal. The filtered signal is used to clock one or more samplers so as to create sampling instances of the signal(s) under test. The sampling instances are then analyze using any one or more of a variety of techniques suited to the type of signal(s) under test.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.