Patent ID: 7015763

Claim:
A method for providing a digital tuning of a voltage controlled oscillator of a phase locked loop in an electronic communication device, comprising the steps of: providing an output frequency signal and a further output frequency signal to a first phase detector and to a second phase detector, respectively, wherein said output frequency signal is an output signal of the voltage controlled oscillator divided by a pre-selected number (N) in a frequency domain and said further output frequency signal is the output signal divided by a further pre-selected number (M) in the frequency domain; generating a first error signal by the first phase detector used for a normal phase locked loop operation providing a feedback control of the voltage controlled oscillator and generating a second error signal by the second phase detector; and providing said second error signal or a scaled second error signal, which is said second error signal multiplied by a predefined scaling factor, to an up/down counter for providing said digital tuning of the voltage controlled oscillator of said phase locked loop.