Modulators – Frequency modulator – Including stabilization or alternatively distortion – noise...
Reexamination Certificate
2005-08-17
2008-08-26
Pascal, Robert J. (Department: 2817)
Modulators
Frequency modulator
Including stabilization or alternatively distortion, noise...
C331S017000
Reexamination Certificate
active
07417513
ABSTRACT:
A system and method for modulating a phase component of an electromagnetic signal includes a phase/frequency detector having first and second inputs and an output. The first phase/frequency detector input may be configured to receive a reference signal. The system may include an oscillator having an input and an output. The oscillator may be configured to generate a desired oscillator output signal at its output. A divider may be configured to receive the oscillator output signal. The divider may have a divider count input and a divider carryout output that may be connected to the second phase/frequency detector input. A loop filter may be connected in series between the phase/frequency detector output and the oscillator input. The loop filter has a transfer function including at least two frequency response rate change points, where each of the frequency rate change points corresponds to a pole or a zero in the transfer function.
REFERENCES:
patent: 4352074 (1982-09-01), Blinchikoff et al.
patent: 5414741 (1995-05-01), Johnson
patent: 5952895 (1999-09-01), McCune, Jr. et al.
patent: 6094101 (2000-07-01), Sander et al.
patent: 6140882 (2000-10-01), Sander
patent: 6208211 (2001-03-01), Zipper et al.
patent: 6255912 (2001-07-01), Laub et al.
patent: 6611176 (2003-08-01), Goldman
patent: 7002417 (2006-02-01), Maunuksela et al.
patent: 2003/0031267 (2003-02-01), Hietala
patent: 2004/0017261 (2004-01-01), Soumyanath et al.
patent: 2004/0183602 (2004-09-01), Maunuksela et al.
patent: 2005/0129142 (2005-06-01), Yellin et al.
Rhee, Woogeun, “A 1.1-GHz CMOS Fractional-NFrequency Synthesizer with a 3-b Third-Order ΔΣ Modulator,” IEEE Journal of Solid-State Circuits, vol. 35, No. 10, Oct. 2000.
Ahmed Walid Khairy Mohamed
Bengtson David
Gannon Levi
M/A-COM, Inc.
Pascal Robert J.
LandOfFree
System and method for signal filtering in a phase-locked... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for signal filtering in a phase-locked..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for signal filtering in a phase-locked... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4006440