Pulse generator with precision edge placement
US7977996B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2009 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Jan 21, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2005/00052
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital pulse generator including a fractional delay filter is provided as having a plurality of step response functions that can be selected on a sample by sample basis by selection of filter coefficients. The step response functions are all identical but each have different group delay. Responsive to an input waveform having leading and trailing edges aligned with a system clock, the fractional delay filter can output the impulse responses as a pulse waveform having respective leading and trailing edges delayed by different respective fractions of a signal clock cycle from the respective leading and trailing edges of the input waveform. The pulse waveform as output can thus have desired pulse width and desired period of repetition with finer edge placement resolution of improved accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.