Adaptive combiner error calibration algorithms in all-digital outphasing transmitter

A method for a digital outphasing transmitter, comprising:

• generating, by a signal component separator, first digital phase data and second digital phase data based upon a non-constant envelope input signal and at least one phase offset value;
• receiving, by at least one digital phase modulator, the first phase data and the second phase data, wherein the at least one phase modulator operates with a frequency synthesizer to generate a first component signal having a first constant envelope and a second component signal having a second constant envelope;
• amplifying, by at least one power amplifier, the first component signal and the second component signal to generate an amplified first component signal and an amplified second component signal;
• combining, by a power combiner, the first amplified component signal and the second amplified component signal to generate an output signal having a non-constant envelope, wherein the power combiner is of a non-isolated type;
• and
• monitoring, by a mismatch compensator, the output signal to determine the at least one phase offset value, wherein the at least one phase offset value is utilized by the signal component separator for phase adjustment.