Outphasing power combiner

A circuit, comprising:

• a first power amplifier (PA) and a second PA, wherein the first PA is configured to generate a first amplified constant-envelope signal based on a first constant-envelope signal, and wherein the second PA is configured to generate a second amplified constant-envelope signal based on a second constant-envelope signal;
• a power combiner configured to combine the first amplified constant-envelope signal and the second amplified constant-envelope signal, the power combiner comprising:
• a ripple detector configured to detect at least one ripple in a current;
• a transformer coupled to the ripple detector, wherein the transformer includes a primary coil and a secondary coil,
• wherein the primary coil is coupled to the first PA and the second PA, and
• wherein the secondary coil is configured to supply the current based on the detected at least one ripple in the current, a first direction of a first phase of the first amplified constant-envelope signal in the primary coil with respect to a second phase of the second amplified constant-envelope signal in the primary coil;
• and
• a load impedance coupled between a median point of the primary coil and ground, wherein the load impedance dissipates the current based on a second direction of the first phase of the first amplified constant-envelope signal with respect to the second phase of the second amplified constant-envelope signal;
• and
• a differential antenna configured to receive the current supplied by the secondary coil of the transformer and transmit an output RF signal to a RF receiver, wherein the transmitted output RF signal corresponds to a combination of the first amplified constant-envelope signal and the second amplified constant-envelope signal.