Methods and apparatus for supporting linearization on power combined power amplifiers

A power amplifier circuit assembly comprising:

• an uneven power splitter including a power splitter signal input for receiving a signal to be amplified, a first power splitter output and a second power splitter output, said uneven power splitter providing different amounts of power from an input signal received at said power splitter signal input to said first and second power splitter outputs;
• a first power amplifier having a first power amplifier input and a first power amplifier output, the first power amplifier input being coupled to the first power splitter output;
• and
• a second power amplifier, having a second power amplifier input, coupled to the second power splitter output, and a second power amplifier output, said first power amplifier output and the second power amplifier output being coupled to each other and to a signal output of the power amplifier circuit assembly, said second power amplifier being a different class amplifier than said first power amplifier;
• wherein the uneven power splitter includes a first transmission path and a second transmission path, said first transmission path including a first impedance, said second transmission path including a second impedance, said first transmission path coupling the power splitter signal input to the first power splitter output, said second transmission path coupling the power splitter signal input to the second power splitter output, the first and second impedances being different;
• and
• wherein one of said first and second transmission paths includes a phase delay element not included in the other one of said first and second transmission paths.