Novel combined broadband Doherty power amplifier and design method thereof

The invention discloses a novel combined broadband Doherty power amplifier and a design method thereof. The power amplifier comprises a Wilkinson power divider, a carrier power amplification circuit,a peak power amplification circuit, a load modulation network and a rear matching network, wherein the Wilkinson power divider equally divides input power and then outputs the power to the carrier power amplification circuit and the peak power amplification circuit; the output end of the carrier power amplification circuit and the output end of the peak power amplification circuit are connected with the load modulation network; the load modulation network is connected with the rear matching network, power is output to the rear matching network through the load modulation network, and the poweris output to a load through the rear matching network. The impedance conversion ratio of the impedance conversion line at the output end of the carrier power amplifier is reduced; and a post-matchingnetwork optimized by a sim