Radio frequency circuit, transmitter, base station, and user terminal

An apparatus, comprising a circuit, the circuit comprising:

• a receiving circuit, configured to receive a first signal and a second signal;
• a splitting circuit, configured to 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;
• a phase adjustment circuit, configured to adjust a phase of the fifth signal to obtain a seventh signal;
• and
• a combining circuit, configured to combine the seventh signal and the third signal into an eighth signal.

A method, comprising:

• receiving, by a circuit, a first signal and a second signal;
• splitting, by the circuit, the first signal into a third signal and a fourth signal, and splitting the second signal into a fifth signal and a sixth signal;
• adjusting, by the circuit, a phase of the fifth signal to obtain a seventh signal;
• and
• combining, by the circuit, the seventh signal and the third signal into an eighth signal.