The Continuum of Load Modulation Ratio From Doherty to Traveling-Wave Amplifiers

This article proposes a unified theory on power combining with a continuum of load modulation (LM) ratios. Two well-known power amplifier (PA) techniques, Doherty and traveling-wave amplifiers, are the two extreme examples within this continuum, yielding full and zero LMs, respectively. Based on this theory, a power-combining technique is proposed, which optimizes efficiency and bandwidth at a cer...