Design method for microwave amplifier

The invention discloses a design method for a microwave amplifier, belonging to the technical field of circuit design. The design method comprises the following steps of: fitting input or output impedance of a transistor within a target frequency range; obtaining an equivalent network of the input or output impedance by using a numerical calculation method; constructing a conjugated network corresponding to the equivalent network, and connecting the conjugated network with the transistor; optimizing the conjugated network to obtain an optimal input or output conjugated network; obtaining an optimal input or output equivalent network according to the optimal input or output conjugated network; matching the optimal input or output equivalent network with terminating impedance, so as to obtain an optimal matching network; and connecting the optimal matching network with the transistor, so as to complete the design of the amplifier. The design method is high in design efficiency, is beneficial to directly showing mutual influences between input and output, and can sufficiently express the properties of the transistor.