Abstract: A Doherty power amplifier of a wireless communication system is provided. The Doherty power amplifier includes a first stage including a first power amplifier and a second power amplifier. The Doherty power amplifier includes a second stage including a third power amplifier and a fourth power amplifier. The Doherty power amplifier includes a coupler between the first stage and the second stage. The Doherty power amplifier includes a load impedance connected to the second stage. A bias of the first power amplifier is applied differently from a bias of the second power amplifier. A bias of the third power amplifier is applied in the same manner as a bias of the fourth power amplifier.

Abstract: An electronic device including a Doherty power amplifier is provided. The electronic device includes a carrier amplifier, a first circuit coupled to an output terminal of the carrier amplifier, a peaking amplifier, a second circuit coupled to an output terminal of the peaking amplifier, and a network circuit. The network circuit includes the Doherty power amplifier and a transmission line for impedance matching with a resonance circuit. The resonance circuit may be disposed between a first area and a second area of the transmission line. The Doherty power amplifier provides an output impedance in a first range distributed based on a frequency within a bandwidth. The network circuit provides a load impedance in a second range distributed based on the frequency within the bandwidth. The first area of the transmission line provides a first phase shift impedance. The second area of the transmission line provides a second phase shift impedance.

Abstract: The disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long-Term Evolution (LTE). A Doherty power amplifier of a wireless communication system is provided. The Doherty power amplifier includes a first power amplifier, a second power amplifier, a first transmission line, a 4-port coupler, and a load impedance, and the 4-port coupler includes a first port, a second port, a third port, and a fourth port, the first power amplifier is coupled with the 4-port coupler through the first port, the second power amplifier is coupled with the 4-port coupler through the fourth port, the load impedance is coupled with the 4-port coupler through the third port, the first transmission line is disposed between the first power amplifier and the first port of the 4-port coupler, and the second port is an output end of the power amplifier.

Abstract: The disclosure relates to a 5th generation (5G) or a pre-5G communication system for supporting a higher data transmission rate after a 4th generation (4G) communication system such as long-term evolution (LTE). A Doherty power amplifier of a wireless communication system is provided.