Apparatus and Method for Correcting Deviation Between Plurality of Transmission Channels

A wireless communications device, comprising:

• a plurality of transmission channels comprising a first transmission channel and a second transmission channel;
• an apparatus for correcting a deviation between the plurality of transmission channels coupled to the plurality of transmission channels, wherein the apparatus comprises:
• a phase offset system configured to set a phase offset between the first transmission channel and the second transmission channel such that a phase deviation between the first transmission channel and the second transmission channel deviates from zero;
• a power detector coupled to the power offset system and configured to detect signal powers of the first transmission channel and the second transmission channel under the phase offset, wherein the detected signal powers comprise one or more signal power sets, wherein each of the signal power sets comprises a first signal power from the first transmission channel, a second signal power from the second transmission channel, and a third signal power from the first transmission channel and the second transmission channel;
• a processor coupled to the power detector and configured to determine a deviation correction value between the first transmission channel and the second transmission channel based on the first signal power, the second signal power, and the third signal power, wherein the deviation correction value comprises a phase correction value;
• and
• a phase, corrector coupled to the processor and configured to set the phase correction value between the first transmission channel and the second transmission channel.

A method for correcting a deviation between a plurality of transmission channels, wherein the plurality of transmission channels comprise a first transmission channel and a second transmission channel, wherein the method comprises:

• setting a phase offset between the first transmission channel and the second transmission channel such that a phase deviation between the first transmission channel and the second transmission channel deviates from zero;
• detecting signal powers of the first transmission channel and the second transmission channel under the phase offset, wherein the detected signal powers comprise one or more signal power sets, wherein each of the signal power sets comprises a first signal power from the first transmission channel, a second signal power from the second transmission channel, and a third signal power from the first transmission channel and the second transmission channel;
• determining a deviation correction value between the first transmission channel and the second transmission channel based on the first signal power, the second signal power, and the third signal power, wherein the deviation correction value comprises a phase correction value;
• and
• setting the phase correction value between the first transmission channel and the second transmission channel.