Pulse generator with precision edge placement

Details Pulse generator with precision edge placement Pulse generator with precision edge placement

2011-07-12

2011-07-12

Luu, An T (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Clock or pulse waveform generating

C327S298000, C708S313000

Reexamination Certificate

active

07977996

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.

REFERENCES:
patent: 6058406 (2000-05-01), Karanovic
patent: 7205924 (2007-04-01), Vemulapalli et al.
patent: 2008/0298454 (2008-12-01), Lewis

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