A communications apparatus, comprising a phase correction unit, a first radio frequency channel, a first analog bridge, a second radio frequency channel, and a second analog bridge, wherein the first analog bridge comprises a first input end and at least two first output ends, the first input end is connected to the first radio frequency channel, and each first output end is connected to one first antenna array; the second analog bridge comprises a second input end and at least two second output ends, the second input end is connected to the second radio frequency channel, and each second output end is connected to one second antenna array; the first analog bridge is configured to receive a first signal at the first input end from the first radio frequency channel, to divide the first signal into at least two channels of first sub-signals, and to respectively output the at least two channels of first sub-signals from the at least two first output ends to at least two first antenna arrays; the second analog bridge is configured to receive a second signal at the second input end from the second radio frequency channel, to divide the second signal into at least two channels of second sub-signals, and to respectively output the at least two channels of second sub-signals from the at least two second output ends to at least two second antenna arrays; and the communication apparatus is configured such that a first channel of first sub-signal in the at least two channels of first sub-signals and a first channel of second sub-signal in the at least two channels of second sub-signals are separately coupled to the phase correction unit by using a respective coupler, and the phase correction unit is configured to send an adjusted signal to a corresponding radio frequency channel, so that a phase of the first channel of first sub-signal is the same as a phase of the first channel of second sub-signal. the first analog bridge comprises a first input end and at least two first output ends, the first input end is connected to the first radio frequency channel, and each first output end is connected to one first antenna array; the second analog bridge comprises a second input end and at least two second output ends, the second input end is connected to the second radio frequency channel, and each second output end is connected to one second antenna array; the first analog bridge is configured to receive a first signal at the first input end from the first radio frequency channel, to divide the first signal into at least two channels of first sub-signals, and to respectively output the at least two channels of first sub-signals from the at least two first output ends to at least two first antenna arrays; the second analog bridge is configured to receive a second signal at the second input end from the second radio frequency channel, to divide the second signal into at least two channels of second sub-signals, and to respectively output the at least two channels of second sub-signals from the at least two second output ends to at least two second antenna arrays; and the communication apparatus is configured such that a first channel of first sub-signal in the at least two channels of first sub-signals and a first channel of second sub-signal in the at least two channels of second sub-signals are separately coupled to the phase correction unit by using a respective coupler, and the phase correction unit is configured to send an adjusted signal to a corresponding radio frequency channel, so that a phase of the first channel of first sub-signal is the same as a phase of the first channel of second sub-signal.