Impact of Modulated Power Supply Parameters on its Output Voltage Distortions

Amplification techniques such as envelope tracking and envelope elimination and restoration improve the efficiency of a radio transmitter of a telecommunication system. However, the modulated power supply used in these methods can introduce distortion into the RF signal. This article establishes the degree to which the parameters of a modulated power supply influence the level of parasitic harmonics in the envelope signal, which can cause distortion of the RF signal.