Frequency synthesizer with prescaler

Details Frequency synthesizer with prescaler Frequency synthesizer with prescaler

2005-08-09

2005-08-09

Bocure, Tesfaldet (Department: 2631)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

Reexamination Certificate

active

06928127

ABSTRACT:
A frequency synthesizer and a method for frequency synthesis are disclosed. The frequency synthesizer comprises a voltage controlled oscillator for generating an output signal having a synthesized frequency, and a prescaler connected to the VCO for receiving the output signal and providing a feedback signal. The prescaler programmatically selects between an integer divider value and a fractional divider value to divide the synthesized frequency of the output signal.

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Cranickx, et al, A 1.75-GHz/3-V Dual-Modulus Divide-by-128/129 Prescaler in 0.7-μm CMOS, IEEE Journal of Solid-State Circuits, vol. 31, No. 7, Jul. 1996.

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