Doherty envelope tracking power amplifier and method for treating radio frequency signal
A power amplifier, radio frequency signal technology, applied in power amplifiers, improving amplifiers to reduce nonlinear distortion, etc., can solve the problems of real-time setting of carrier amplifiers, low efficiency of carrier amplifiers, etc., to achieve the effect of improving linearization and improving efficiency
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[0028] In the Doherty envelope tracking power amplifier and its method for processing radio frequency signals of the present invention, the envelope signal is extracted from the input radio frequency signal through the envelope extraction unit, and the envelope signal is converted into the carrier amplifier working grid after the amplification process of the first linear amplification unit. The carrier amplifier can change according to the envelope of the input radio frequency signal. Under the condition that the output signal gain is basically unchanged, the linearization of the output signal can be optimized in real time, which improves the linearization of the output signal of the carrier amplifier. This improves the efficiency of the Doherty envelope tracking power amplifier.
[0029] The present invention will be described in detail below with reference to the drawings and specific embodiments.
[0030] The Doherty envelope tracking power amplifier of the present invention, s...
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