DEED FORWARD RF POWER AMPLIFIER WITH HIGH EFFICIENCY MAIN AMPLIFIER AND HIGHLY LINEAR ERROR AMPLIFIER

摘要

A feed forward RF power amplifier which provides both high efficiency and minimal distortion in broad bandwidth RF applications. The feed forward power amplifier includes a main amplifier (16) biased to provide high efficiency and an error amplifier (34) biased to provide highly linear operation through substantially the entire operating range. Signal peaks which introduce distortion components at the main amplifier output are cancelled by the linear operation of the error amplifier (34).