Broadband Active Load-Modulation Power Amplification Using Coupled-Line Baluns: A Multifrequency Role-Exchange Coupler Doherty Amplifier Architecture

Broadband active load-modulation power amplifiers (PAs) are effective to enable multistandard wireless communication systems with high dynamic-range wideband signals and high energy efficiency. Traditional Doherty or outphasing PA architectures support their classic active load-modulation operations but, however, exhibit limited carrier bandwidth. We propose a broadband active load-modulation PA a...