Load-impedance selection for maximized large-signal IMD sweet-spot effects

This work describes the impact of the output termination impedance on large-signal intermodulation distortion (IMD)-sweet spots appearing in FET-based power amplifiers. Theoretical studies validated by appropriate measurement results lead to a systematic methodology for selecting the optimum load-impedance value at the fundamental to be presented at the device output. (c) 2005 Wiley Periodicals, Inc.