The invention discloses a dual-
mode matching irregular structure Doherty power
amplifier based on
reflection coefficient circle optimization. The dual-
mode matching irregular structure Doherty power
amplifier comprises a coupler, a carrier amplification circuit, a peak amplification circuit, an irregular structure carrier dual-mode output matching network, an irregular structure peak dual-mode output matching network and a combining load. The uplink
signal output end of the coupler is sequentially connected with a
carrier phase compensation line, a carrier input matching network, a carrier
transistor and an irregular structure carrier dual-mode output matching network in the carrier amplifying circuit; and the lower
signal output end of the coupler is sequentially connected with a peak
phase compensation line, a peak input matching network, a peak
transistor and an irregular structure peak dual-mode output matching network in the peak amplification circuit. And the output ends of the carrier amplification circuit and the peak amplification circuit are directly connected with the combining load. A Doherty power
amplifier is designed by combining a dual-
mode matching network optimization method based on a
reflection coefficient circle with an irregular structure, and
broadband and high-efficiency working characteristics are realized.