Abstract: In this paper, a simple, effective, and time saving measurement setup for nonlinear RF power amplifier characterization is presented. This setup gives the ability of measuring AM-AM, AM-PM and waveforms for SISO, SIMO, and MIMO RF power amplifiers in one measurement step. The system incorporates the advantages of high-speed MTA for waveform measurements and the advantages of using Focus load-pull setup for the characterization of RF devices. Several measurements of multiport balanced amplifier at 1 GHz, using the proposed measurement setup, are presented.
Keywords: AM-AM, AM-PM, MIMO, Power amplifier characterization, RF measurements, SIMO, SISO.