Abstract: In order to meet the demand for power amplifiers in communication base stations, a new pairs of reconfigurable four-band impedance converter is proposed, which adopts a hybrid structure of double Π-type and T-type and achieves the reconfigurability of the matching circuit by inserting PIN diodes. The reconfigurable four-band matching circuit is designed to match any four different complex impedances to the real load at any four frequencies. The reconfigurable quad-band amplifier module is designed for mobile communication base stations under 2G-5G communication standards. The measured saturation output power of the amplifier is about 10 W, and the gain flatness is less than ±1 dB, the maximum additional efficiency can reach 39.5% at saturation output power, and the overall circuit structure is simple.