Multi-band device with multiple miniaturized single-band power amplifiers

摘要

Multi-band device with multiple miniaturized single-band power amplifiers. In some embodiments, a power amplifier chip may include a semiconductor substrate and a plurality of power amplifiers (PAs) implemented on the semiconductor substrate. Each of the PAs may be configured to drive approximately a characteristic load impedance of a downstream component disposed along an individual frequency band signal path, such that each of the PAs is sized smaller than a broadband PA configured to be more than one of the plurality of PAs to drive assigned frequency bands. The downstream component may include an output filter.