Beamformer Power Amplifier Performance

Digital predistortion (DPD) is a key non-linearity compensation tool for power amplifiers (PA) that enables transmitter efficiency improvements. Typical DPD evaluations are done under matched load conditions. However, PA designers working towards massive MIMO and beam-forming implementations need to evaluate amplifier performance considering the impedance variations the PA will experience once deployed. In part 3 of webinar series, VNA Active Device Characterization Essentials, you will learn how to characterize an amplifier’s optimal EVM at 50 ohm using source correction and measure its performance degradation using load-pull. Our unique approach enables seamless robustness testing using the PNA’s spectrum analysis and modulation-distortion analysis applications, a vector signal generator, and a passive tuner.