Patent ID: 8620240
Filing Date: 2013-12-31
Classification: H03F

Abstract:
1. A power amplifier that amplifies a modulated signal including amplitude modulated components and phase modulated components, the power amplifier comprising: a first voltage source that amplifies low-frequency components of the amplitude modulated components of the modulated signal to output a first voltage; a second voltage source that amplifies high-frequency components of the amplitude modulated components of the modulated signal to output a second voltage; a current source that amplifies the amplitude modulated components of the modulated signal to output a current; a combiner circuit that combines the first voltage, the second voltage, and the current to generate a modulated power supply signal; and an RF amplifier that amplifies a signal obtained by up-converting the modulated signal to a carrier frequency and outputs the amplified signal after modulating amplitude of the amplified signal by the modulated power supply signal.