Phase correction method and communication apparatus

A communication apparatus, wherein the apparatus comprises a radio frequency module, a signal transmission module, and a signal transmitting module;

• the radio frequency module comprises a plurality of radio frequency interfaces, the plurality of radio frequency interfaces are connected to the signal transmission module, and the signal transmission module is further connected to a first antenna interface;
• and the first antenna interface is further connected to the signal transmitting module;
• the signal transmitting module is configured to send a radio frequency signal through the first antenna interface;
• the signal transmission module is configured to transmit the radio frequency signal to the radio frequency module through the plurality of radio frequency interfaces;
• and
• the radio frequency module is configured to correct, based on the radio frequency signal received by the plurality of radio frequency interfaces, phases of signals received by the plurality of radio frequency interfaces.

A phase correction method, wherein the method is applied to a radio frequency module, the radio frequency module comprises a plurality of radio frequency interfaces, the plurality of radio frequency interfaces are connected to a signal transmission module, the signal transmission module is further connected to at least one antenna interface, and the method comprises:

• sending a first radio frequency signal through the plurality of radio frequency interfaces;
• receiving the first radio frequency signal that is looped back by the signal transmission module, wherein the first radio frequency signal is transmitted by the signal transmission module to the at least one antenna interface, and is looped back to the radio frequency module at the at least one antenna interface;
• and
• correcting, based on the looped-back first radio frequency signal, phases of signals sent by the plurality of radio frequency interfaces.