AUTHORS: Gary R. Simpson – Maury Microwave Corporation, Ontario, California and Michael B. Steer – Motorola RFSD, Phoenix, Arizona
PUBLICATION HISTORY: First published in the 48th ARFTG Conference Digest; December 1996, and reprinted by permission in this format in March 2000.
ABSTRACT: Load pull measurements are widely used to determine matching impedances required for optimum power amplifier design. In the past, this has typically been done at the fundamental frequency only. However, the harmonic terminations can have a significant effect. This paper presents some typical data which indicates the importance of second harmonic tuning to the power amplifier designer.