AUTHORS: John F. Sevic – QUALCOMM, Incorporated, San Diego, California; Chuck McGuire – Hewlett-Packard Company, Westlake Village, California; Gary R. Simpson – Maury Microwave Corporation, Ontario, California; Jaime Pla – Motorola Incorporated, Phoenix, Arizona
PUBLICATION HISTORY: First published in Microwave Journal; Vol. 40, No. 3 – March 1997; republished in this format with permission in June 1997.
ABSTRACT: A new method for large-signal transistor model validation is described. Previous methods of large-signal model validation were performed without incorporating the effect of harmonic termination. The proposed method couples a harmonic-balance engine with measured automated load-pull system S-parameter data at fundamental and harmonic frequencies. The load states are synchronized properly so that the transistor model is loaded in the simulation exactly as it is during load-pull characterization. Measured vs. simulated results for a 1mm GaAs MESFET at 2 GHz are presented.