Radio frequency power amplifier and application thereof

The invention provides a radio frequency power amplifier, which comprises an input power divider used for carrying out power distribution on a radio frequency input signal and outputting a first radio frequency signal and a second radio frequency signal; the first signal amplifier is used for amplifying the power of the first radio frequency signal to obtain the first radio frequency signal after power amplification; the first directional coupler is used for carrying out coupling processing on the second radio frequency signal to obtain a straight-through radio frequency signal and a coupled radio frequency signal; the second signal amplifier is used for amplifying the power of the straight-through radio-frequency signal and the coupling radio-frequency signal to obtain the straight-through radio-frequency signal and the coupling radio-frequency signal after power amplification; and the IPD module is used for performing phase adjustment on the power-amplified straight-through radio-frequency signal, performin