An outphasing transmitter includes a decomposition block, first and second power amplifiers, and antennas in a phased array antenna panel. The decomposition block decomposes a composite input signal into first and second decomposed radio frequency (RF) signals. The first and second decomposed RF signals are coupled to the first and second power amplifiers respectively. First and second non-overlapping sub-arrays of the antennas may be uniquely associated with the first and second power amplifiers respectively. Alternatively, first and second groups of interleaved antenna rows may be uniquely associated with the first and second power amplifiers respectively. Alternatively, first and second random pluralities of the antennas may be randomly hard-wired to the first and second power amplifiers respectively. Alternatively, first and second pluralities of the antennas may be dynamically and selectably assigned to the first and second power amplifiers respectively.