Method of and circuit for predistortion for a power amplifier

A digital predistortion (DPD) system, comprising:

• an input configured to receive a DPD input signal associated with a first sampling frequency;
• a first predistortion circuit configured to provide a first signal path coupled to the input to generate a first predistortion signal, the first predistortion circuit including a first infinite impulse response (IIR) filter;
• a second predistortion circuit configured to provide a second signal path coupled to the input in parallel with the first signal path to generate a second predistortion signal, the second predistortion circuit including a second IIR filter;
• and
• a combiner circuit configured to combine the first predistortion signal and the second predistortion signal to generate a DPD output signal,
• wherein the DPD output signal is coupled to an input of a power amplifier having a plurality of memory effects,
• wherein a first parameter of the first IIR filter is determined based on the first sampling frequency and a first memory effect time constant associated with a first memory effect.