Patent ID: 8548414

Claim:
A circuit for reducing radio frequency power consumption of a mobile phone, comprising: a baseband processing chip and a radio frequency power amplifier, wherein the baseband processing chip is used to adjust a collector bias voltage of the radio frequency power amplifier according to radio frequency output power of the radio frequency power amplifier; wherein the circuit further comprises a battery and a DC-DC module; the battery is used to supply power for the DC-DC module; the baseband processing chip is used to output an amplitude control signal of a collector voltage to the DC-DC module according to the radio frequency output power of the radio frequency power amplifier; the DC-DC module is used to implement DC-DC step-down conversion according to the amplitude control signal of the collector voltage from the baseband processing chip, and then output to a collector of the radio frequency power amplifier; the radio frequency power amplifier is used to amplify a radio frequency input, and then output the radio frequency input that is amplified.