High performance signal generation

Details High performance signal generation High performance signal generation

2006-05-09

2008-10-07

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S113000, C327S107000, C331S025000

Reexamination Certificate

active

07432751

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
patent: 6603362 (2003-08-01), Von Dolteren, Jr.
patent: 6807134 (2004-10-01), Nakajima et al.
Danny Abramovitch, “Phase-Locked Loops: A Control Centric Tutorial,” May 8, 2002, Communications and Research Lab, Agilent Labs.

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