Focusing on Doherty Power Amplifiers for S-Band

The aim of this paper is to provide an overview of the actual state-of-art about the Doherty Power Amplifier (DPA) for S-Band application and to present a new realization using GaN devices able to provide 41dBm saturated output power with 60% drain efficiency and 10dB gain at 2.14GHz. The design of the prototype will be described starting from the acquisition of the system requirements up to its actual implementation and layout generation. The DPA benchmark will be used also to compare the prototype performance with other state-of-art DPAs.