Patent ID: 8305141

Claim:
A distributed Doherty power amplifier comprising: a first Doherty power amplifier comprising: a first carrier amplifier; a first peaking amplifier connected to the first carrier amplifier in parallel; and a first power distributor configured to divide an input signal of the first Doherty power amplifier into a first signal and a second signal, input the first signal to the first carrier amplifier, and input the second signal to the first peaking amplifier; a second Doherty power amplifier connected to the first Doherty power amplifier in parallel, and comprising: a second carrier amplifier; a second peaking amplifier connected to the second carrier amplifier in parallel; and a second power distributor configured to divide an input signal of the second Doherty power amplifier into a third signal and a fourth signal, input the third signal to the second carrier amplifier, and input the fourth signal to the second peaking amplifier; a first shifting unit interconnected between the input of the first Doherty power amplifier and the input of the second Doherty power amplifier, and configured to inverse the phase of the input of the second Doherty power amplifier; and a second shifting unit interconnected between the output of the first Doherty power amplifier and the output of the second Doherty power amplifier, and configured to inverse the phase of the output of the second Doherty power amplifier.