Phase error cancellation circuit and method for fractional...

Details Phase error cancellation circuit and method for fractional... Phase error cancellation circuit and method for fractional...

2005-09-13

2005-09-13

Wambach, Margaret R. (Department: 2816)

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Pulse multiplication or division

C377S048000, C327S115000, C327S117000

Reexamination Certificate

active

06944257

ABSTRACT:
A frequency divider circuit (11) has an input port for an input signal (Fo) to be divided, an output port for a divided signal (FDIV), and means (12-19) for providing a variable division-ratio control signal (N+C) and a residual quantization error signal (R), applying the variable division ratio control signal (N+C) to a control port of the frequency divider, and using the residual quantization error signal (R) to cancel phase error in the divided signal. Both the variable division ratio control signal (N+C) and the residual quantization error signal (R) are dithered.

REFERENCES:
patent: 4179670 (1979-12-01), Kingsbury
patent: 4697156 (1987-09-01), Rudolph
patent: 4965531 (1990-10-01), Riley
patent: 5055800 (1991-10-01), Hietala et al.
patent: 5055802 (1991-10-01), Hietala
patent: 5448191 (1995-09-01), Meyer
patent: 5495206 (1996-02-01), Hietala
patent: 5825253 (1998-10-01), Mathe et al.
patent: 6600378 (2003-07-01), Patana
patent: WO 00 62428 (2000-10-01), None
Kenny, T.P et al “Design and Realization of a Digital Delta-Sigma Modulator for Fractional-n Frequency Synthesis”, IEEE Transactions on Vehicular Technology, Mar. 1999.

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