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Doherty envelope tracking power amplifier and method for treating radio frequency signal

The invention discloses a Doherty envelope tracking power amplifier and a method for treating a radio frequency signal. The amplifier comprises a power divider, a peak amplifier, a carrier amplifier, a coupler, an envelope extraction unit and a first linear amplification unit, the input end of the radio frequency signal is respectively connected with the input end of the power divider and the input end of the envelope extraction unit by the coupler, the output end of the power divider is respectively connected with the input end of the peak amplifier and the input end of the carrier amplifier, the output end of the carrier amplifier is connected with the output end of the peak amplifier in a coupling way, and the output end of the envelope extraction unit is connected with the grid electrode end of the carrier amplifier by the first linear amplification unit. According to envelope changes of the input radio frequency signal and under the conditions of ensuring the basic changeless output signal gain, the carrier amplifier enables the linearization of output signals to reach real-time optimization and improves the linearization of the output signals of the carrier amplifier, thereby improving the efficacy of the Doherty envelope tracking power amplifier.
Owner:COMBA TELECOM SYST CHINA LTD
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