Patent ID: 8324965

Claim:
A final stage three-way power combining amplifying circuit applied to power amplifier of a mobile communications base station system, comprising: No. 1 power divider, a Doherty amplifier, a Class AB amplifier, No. 1 phase-shift line, and a power combiner, wherein The first output of the No. 1 power divider is connected to the input of the No. 1 phase-shift line via a transmission line, the output of the No. 1 phase-shift line is connected to the input of the Doherty amplifier, and the output of the Doherty amplifier is connected to the first input of the power combiner via a transmission line, and wherein The second output of the No. 1 power divider is connected to an input of the Class AB amplifier via a transmission line, the output of the Class AB amplifier is connected to the second input of the power combiner via a transmission line, and the output of the power combiner outputs an amplified radio frequency signal.