Patent ID: 6703880
Filing Date: 2004-03-09
Classification: H03L,Y10S

Abstract:
A signal generator comprising:a frequency divider for providing a low-frequency signal that is based upon a high-frequency output signal, and for providing a driving signal representative of a frequency of the high-frequency output signal; a comparator connected to said frequency divider for comparing a phase of the low-frequency signal with a phase of a reference signal, and for providing at least one control signal having a duration based upon the comparison; oscillator driving means connected to said frequency divider for receiving the driving signal, and for modulating a value of a coefficient of proportionality based upon a difference between the frequency of the high-frequency output signal and a desired frequency; an oscillator connected to said comparator and to said oscillator driving means for providing the high-frequency output signal having a frequency based upon the duration of the at least one control signal multiplied by the coefficient of proportionality; and a reset circuit connected to said frequency divider and to said phase comparator for providing a reset signal at each leading edge of the reference signal for synchronizing the low-frequency signal with the reference signal.