Digital-to-analog converter (dac) clock spur reduction for multiple-input multiple-output (mimo) applications

A method for signal transmission, comprising:

• setting a first clock phase associated with a first clock generator of an apparatus, the apparatus including:
• a first transmission chain including the first clock generator and a first digital-to-analog converter (DAC), an output of the first clock generator being coupled to a clock input of the first DAC, wherein the first transmission chain further includes a first digital data path coupled to an input of the first DAC;
• and
• a second transmission chain including a second clock generator and a second DAC, an output of the second clock generator being coupled to a clock input of the second DAC, wherein the second transmission chain further includes a second digital data path coupled to an input of the second DAC;
• and
• setting a first data phase associated with the first digital data path based on the first clock phase associated with the first clock generator.

A wireless device, comprising:

• at least one first antenna;
• a first transmission chain coupled to the at least one first antenna and including a first clock generator and a first digital-to-analog converter (DAC), an output of the first clock generator being coupled to a clock input of the first DAC, wherein the first transmission chain further includes a first digital data path coupled to an input of the first DAC;
• at least one second antenna;
• a second transmission chain coupled to the at least one second antenna and including a second clock generator and a second DAC, an output of the second clock generator being coupled to a clock input of the second DAC, wherein the second transmission chain further includes a second digital data path coupled to an input of the second DAC;
• and
• a controller configured to set a data phase associated with the first digital data path based on a clock phase associated with the first clock generator.