At least one embodiment relates to generating at least one RF signal based on at least one digital baseband signal at a first clock rate. At least one digital pulse sequence at a second clock rate corresponding to a center frequency of the RF signal is modulated based on the digital baseband signal. Pulses of the pulse sequence are quantized based on a time grid of a third clock rate. A ratio between a number of second clock cycles corresponding to one first clock cycle and a number of third clock cycles corresponding to one first clock cycle is non-integer.