Doherty power amplifier

The invention provides a Doherty power amplifier. The Doherty power amplifier comprises a first input matching network, a driving amplifier, a first output matching network, a power distribution network, a second input matching network, a carrier amplifier, a peak amplifier, a phase inversion network, a reactance offset network and a power synthesis network, the first input matching network, the driving amplifier, the first output matching network and the power distribution network are connected in sequence; each output end of the power distribution network is correspondingly connected with the input end of each second input matching network; the output end of each second input matching network is correspondingly connected with the input end of the carrier amplifier and the input end of the peak amplifier respectively; the output end of the carrier amplifier is connected with the input end of the inverter network; the output end of the peak amplifier is connected with the reactance offset network, the output