PLL-tuning system having a phase detector with a sampling frequency equal to a reference frequency

摘要

A time discrete PLL-tuning system includes a phase detector and a voltage-controlled oscillator (VCO) for tuning the frequency (fVCO) thereof to a frequency equal to N/M times a reference frequency (fREF), with M being a factor indicating the number of frequency steps in which a transmitter/receiver channel distance is divided, and N being the number of frequency steps in which the oscillator frequency is divided. The sampling frequency of the phase detector is substantial equal to the reference frequency (fREF).