Oscillators – Automatic frequency stabilization using a phase or frequency... – Particular error voltage control
Reexamination Certificate
2009-06-09
2011-11-08
Pascal, Robert (Department: 2817)
Oscillators
Automatic frequency stabilization using a phase or frequency...
Particular error voltage control
C331S023000, C327S156000, C332S127000
Reexamination Certificate
active
08054137
ABSTRACT:
The invention relates to a method and apparatus for integrating the various circuit components controlling a voltage-controlled oscillator (“VCO”) on an integrated circuit formed on a semiconductor device. In one embodiment, the integrated circuit includes a first digital-to-analog converter (“DAC”) for receiving and converting a digital representation of the frequency modulation for the VCO to an analog form. A filter removes any conversion error from the first analog signal. A second DAC receives and converts a digital representation of the center frequency for the VCO to a second analog signal. The first and second analog signals are combined at an adder and the resulting signal is used by a bridge circuit which controls the VCO.
REFERENCES:
patent: 2932970 (1960-04-01), Zito
patent: 4580109 (1986-04-01), Lockwood
patent: 5045818 (1991-09-01), Miura
patent: 5164685 (1992-11-01), Niemiö
patent: 5659269 (1997-08-01), Myers
patent: 5710524 (1998-01-01), Chou et al.
patent: 5867333 (1999-02-01), Saiki et al.
patent: 6069925 (2000-05-01), Koh
patent: 6172536 (2001-01-01), Yoshihara
patent: 6339711 (2002-01-01), Otaka et al.
patent: 6792063 (2004-09-01), Ogura
patent: 6816712 (2004-11-01), Otaka et al.
patent: 6856204 (2005-02-01), Kwon
patent: 6892057 (2005-05-01), Nilsson
patent: 7123102 (2006-10-01), Uozumi et al.
patent: 7184738 (2007-02-01), Otaka et al.
patent: 7301407 (2007-11-01), Cho
patent: 7420426 (2008-09-01), Herrin et al.
patent: 7423493 (2008-09-01), Uozumi et al.
patent: 7454176 (2008-11-01), Uozumi et al.
patent: 7482880 (2009-01-01), Herrin et al.
patent: 7495518 (2009-02-01), Lee et al.
patent: 7541879 (2009-06-01), Kato et al.
patent: 7636386 (2009-12-01), McCune et al.
patent: 7821344 (2010-10-01), Kitayama et al.
patent: 2009/0108891 (2009-04-01), Sander et al.
patent: 2010/0102859 (2010-04-01), Fattaruso
Gannon Levi
Panasonic Corporation
Pascal Robert
LandOfFree
Method and apparatus for integrating a FLL loop filter in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for integrating a FLL loop filter in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for integrating a FLL loop filter in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4272543