RADIO FREQUENCY CIRCUIT, TRANSMITTER, BASE STATION AND USER TERMINAL

Embodiments of the present invention provide a radio frequency circuit, including: a first circuit and a second circuit. The first circuit is configured to: receive a first signal and a second signal; split the first signal into a third signal and a fourth signal, and split the second signal into a fifth signal and a sixth signal; adjust a phase of the fifth signal to obtain a seventh signal; and combine the seventh signal and the third signal into an eighth signal. The second circuit includes a primary power amplifier branch and a secondary power amplifier branch, the primary power amplifier branch includes an outphasing circuit, the secondary power amplifier branch includes a secondary power amplifier, the primary power amplifier branch is configured to process the fourth signal and the sixth signal, and the secondary power amplifier branch is configured to process the eighth signal. In the radio frequency circuit provided in the embodiments of the present invention, the second circuit at rated power can reach highest efficiency, so that an actual application requirement can be satisfied.