Doherty amplifiers with passive phase compensation circuits

A Doherty amplifier comprising:

• a power divider configured to receive a radio frequency (RF) signal and to divide the RF signal into a main input signal and a peaking input signal, wherein the power divider includes a first power divider output configured to produce the main input signal, and a second power divider output configured to produce the peaking input signal;
• a main amplifier path coupled between the first power divider output and a combining node, wherein the main amplifier path includes a main amplifier and first input circuitry coupled between the first power divider output and the main amplifier, wherein the first input circuitry includes a first short-circuited stub, and wherein the first input circuitry is characterized by a frequency-dependent insertion phase, and a slope of the frequency-dependent insertion phase is altered by the first short-circuited stub;
• and
• a peaking amplifier path coupled between the second power divider output and the combining node, wherein the peaking amplifier path includes a peaking amplifier and a series delay element coupled between the peaking amplifier and the combining node.