Digital phase detector

Details Digital phase detector Digital phase detector

2006-06-13

2006-06-13

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By phase

C327S113000, C327S156000, C327S147000

Reexamination Certificate

active

07061276

ABSTRACT:
A high performance phase detector includes a local digital oscillator for generating a digital reference signal of programmable frequency and phase. The phase detector accumulates a difference in phase between the digital reference signal and a sampled input signal to produce a measure of phase error. The phase detector can be advantageously used in a frequency synthesizer to produce signals with low phase noise and accurate phase control. Synthesizers of this type can further be used to as building blocks in ATE systems and other electronic systems for generating low jitter clocks and waveforms.

REFERENCES:
patent: 4090145 (1978-05-01), Webb
patent: 4156204 (1979-05-01), Hargis

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