Deign of broadband highly efficienct Doherty power amplifiers by using series of continuous modes

In this paper, the series of continuous working modes of power amplifier(PA) are introduced into Doherty PAs. The series of continuous modes contain the continuous working modes between Class-B/J and Class-F continuums. By judiciously optimizing the phase of carrier output matching network, the series of continuous working modes can be got by carrier PA at peaking output. A highly efficient broadband Doherty PA based on series of continuous modes is implemented with operation band over 1.65-2.4GHz. At 6dB power back-off and maximum output power, the drain efficiencies of this Doherty PA are 46%-57% and 60.12%-76.24%, respectively. The gain and output power characteristics of the DPA at saturation are 11.5-12.1dB and 43.55-45.1dBm, respectively.