Patent ID: 8666012
Filing Date: 2014-03-04
Classification: H03L

Abstract:
1. An apparatus comprising: a controller configured to: monitor a value of a first control signal associated with a first feedback loop which is connected to a signal generator, the first control signal being indicative of relatively fine frequency adjustments for the signal generator; based on the monitoring of the first control signal, to adjust a value of a second control signal associated with a second feedback loop connected to the signal generator, the second control signal being indicative of relatively less fine frequency adjustments for the signal generator; and provide an output signal for controlling a frequency of a signal generated by the signal generator, the output signal being based on the first and second control signals, wherein the controller is configured to adjust a value of the first control signal based on the monitoring, wherein the controller is configured to adjust values of the first and second control signals such that a change in the frequency of the signal generated by the signal generator associated with the adjustment of the value of the second control signal is compensated, at least partially, by a change in the frequency of the signal generated by the signal generator associated with the adjustment of the value of the first control signal.