Power Amplifier Linearisation Using a Straightforward Technology Independent Method Based on Vectorial Large-Signal Measurements

Linearity is an important parameter for analogue RF applications, because baseband signals to be transfered by the telecommunication systems are supposed to be altered minimally by the RF part. We show that the predistortion signal, needed to cancel the third-order intermodulation product IM3, can accurately and straightforwardly be determined from two-tone vectorial large-signal measurements. We demonstrate that this quasi-automatic procedure is independent of component technology and operation class.