Enhanced doherty amplifier

An enhanced Doherty amplifier comprising:

• a plurality of enhanced Doherty modules wherein each of the enhanced Doherty modules is configured to receive the input signal and provide an output signal;
• an input power splitter configured to receive a radio frequency signal and split the radio frequency signal into the input signal supplied to each of the plurality of enhanced Doherty modules;
• a combiner configured to combine each output signal received from the plurality of enhanced Doherty modules;
• wherein each of the enhanced Doherty modules comprises:
• a power splitter configured to receive an input signal and split the input signal into a carrier signal provided at a carrier splitter output and a peaking signal provided at a peaking splitter output;
• a Doherty combining node;
• a carrier path comprising a carrier power amplifier circuitry, a carrier input network coupled between the carrier splitter output and the carrier power amplifier circuitry, and a carrier output network coupled between the carrier power amplifier circuitry and the Doherty combining node;
• and
• a peaking path comprising peaking power amplifier circuitry, a peaking input network coupled between the peaking splitter output and the peaking power amplifier circuitry, and a peaking output network coupled between the peaking power amplifier circuitry and the Doherty combining node,
• wherein:
• the carrier and peaking input networks are configured to impose phase shifts causing the peaking signal to lag the carrier signal by approximately 90 degrees when the carrier and peaking signals are respectively presented to the carrier and peaking power amplifier circuitries;
• and
• the carrier and peaking output networks are configured to respectively impose compensated carrier and peaking phase offsets causing the peaking and carrier signals to arrive at the Doherty combining node for reactive combining to generate the output signal.