Method and system for a fast-switching phase-locked loop...

Details Method and system for a fast-switching phase-locked loop... Method and system for a fast-switching phase-locked loop...

2011-03-29

2011-03-29

Tan, Vibol (Department: 2819)

Pulse or digital communications

Systems using alternating or pulsating current

Angle modulation

C375S235000, C375S324000

Reexamination Certificate

active

07916804

ABSTRACT:
Aspects of a method and system for a fast-switching Phase-Locked Loop using a Direct Digital Frequency synthesizer may include generating a second signal from a first signal by: translating an inphase component of said first signal in frequency via a filtered fast-switching oscillating signal generated using at least a direct digital frequency synthesizer (DDFS), and translating a corresponding quadrature component of said first signal in frequency via a phase-shifted version of said generated filtered fast-switching oscillating signal. The inphase and quadrature components of the first signal may be multiplied with the filtered fast-switching oscillating signal and a phase-shifted version of the filtered fast-switching oscillating signal, respectively. The filtered fast-switching oscillating signal may be obtained by removing at least one frequency-sum term of the fast-switching oscillating signal, where the fast-switching signal oscillating signal may be generated from a signal generated by the DDFS that may be multiplied with an oscillating reference signal.

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