A Doherty power amplifier arrangement comprises a splitter network, a first amplifier path comprising at least a first sub-amplifier and a first output matching network; a second amplifier path comprising at least a second sub-amplifier amplifier and a second output matching network. The Doherty power amplifier arrangement further comprises a load modulation network comprising four transmission lines. Each transmission line is a quarter wavelength line at a fundamental frequency of the input signal. Publ.
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