A wideband output matching network for Doherty Power Amplifier applications

Abstract

This paper shows an output matching network proposal for Doherty Power Amplifier applications. A preliminary theoretical analysis of the proposed output network is shown and a demonstrator has been simulated obtaining outstanding results in terms of fractional bandwidth, efficiency and output power. The obtained potential fractional bandwidth is 67% from 1.8 to 3.6 GHz with in-band added efficiency between 32 and 36% at 6 dB output back-off (OBO), 40 to 50% at saturation, and saturated output power higher than 20W on the whole band.