Doherty Power Amplifier Design in Gallium Nitride Technology Using a Nonlinear Vector Network Analyzer and X-Parameters

This paper presents a complete Doherty power amplifier design that has been developed entirely inside the circuit simulator, but using nonlinear vector network analyzer data and measured X-parameter models. A high-power nonlinear measurement setup with active load-pull capabilities is presented and used to extract X-parameters of a commercially available… CONTINUE READING