Digital predistortion of envelope tracking amplifiers driven by slew-rate limited envelopes

Summary form only given, as follows. This paper presents a new digital predistorter (DPD) to compensate for nonlinear distortion present in Envelope Tracking (ET) Power Amplifiers (PAs) driven by slew-rate limited versions of the real signal´s envelope. Unfortunately, the use of slower versions of the real signal´s envelope generates nonlinear memory effects. This paper shows experimental results that prove that is possible to compensate for these nonlinear memory effects.