Phase-control circuit arrangement and method for operating said circuit arrangement

A method for operating a phase locked loop, comprising:

• measuring a first frequency using a frequency meter and storing the first frequency in a first memory;
• measuring a second frequency using the frequency meter and storing the second frequency in a second memory;
• determining and using a difference between the two stored frequencies to determine a gradient of a voltage controlled oscillator portion of the phase locked loop;
• calculating a correction value using the determined gradient;
• and
• producing a frequency with the phase locked loop using the correction value.

A phase locked loop system, comprising:

• a phase locked loop circuit configured to generate an output frequency signal based on an input reference frequency signal, the phase locked loop circuit comprising a voltage controlled oscillator portion configured to generate the output frequency signal based on a tuning signal provided thereto, the phase locked loop circuit further comprising a compensation input;
• and
• a compensation circuit configured to generate a compensation value and provide such compensation value to the compensation input of the phase locked loop circuit, wherein the compensation value is a function of a gradient associated with the voltage controlled oscillator portion of the phase locked loop circuit,
• wherein the phase locked loop circuit is configured to modify an operation thereof based on the compensation value provided at the compensation input, thereby mitigating a deterioration in a loop bandwidth of the phase locked loop system associated with variations in the gradient of the voltage controlled oscillator portion of the phase locked loop circuit.