Adjustable analog pre-distortion linearizer suitable for Doherty and linearization method

The invention belongs to the technical field of microwave power amplifiers, and discloses an adjustable analog pre-distortion linearizer and linearization method suitable for Doherty, the adjustable analog pre-distortion linearizer comprises a coupler, a multi-inflection point generation network and a variable impedance network: the coupler is used for signal separation and synthesis; the multi-inflection-point generation network is used for generating nonlinearity with a multi-inflection-point characteristic; and the variable impedance network is used for carrying out impedance conversion along with power change. The amplitude characteristic of the adjustable analog pre-distortion linearizer provided by the invention has a plurality of inflection points, so that the Doherty distortion can be accurately compensated. By adding a multi-inflection point generation network, richer nonlinear characteristics can be created. On the basis, the advantages of being simple in structure, easy to apply and the like are st