Direct digital synthesizer with variable reference for...

Details Direct digital synthesizer with variable reference for... Direct digital synthesizer with variable reference for...

2007-09-26

2009-08-04

Mis, David (Department: 2817)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Having specific delay in producing output waveform

C327S264000, C327S270000, C327S271000, C327S272000, C327S288000

Reexamination Certificate

active

07570096

ABSTRACT:
Improvement of quantization errors that arise in a delay line with finite resolution. A direct digital synthesizer (DDS), which contains a numerically controlled oscillator (NCO) and a digital-to-phase converter (DPC), is placed in the feedback loop of a phase locked loop (PLL). The DDS is used as a fractional divider of the voltage controlled oscillator (VCO) frequency, such that the reference frequency of the DDS is made variable. Alignment of the edges provided by the DDS delay line may then be adjusted. Mismatch errors in the DDS delay line are reduced by utilizing independently tunable delay elements.

REFERENCES:
patent: 7315215 (2008-01-01), Cafaro et al.

Affiliated with

Also associated with

Rating

Direct digital synthesizer with variable reference for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Direct digital synthesizer with variable reference for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct digital synthesizer with variable reference for... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4134165