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A microwave Doherty power amplifier (DPA) consists of a carrier amplifier (CA), a peaking amplifier (PA), and an impedance inverting network. In this paper, a novel DPA topology with neither the impedance inverting network nor offset lines is proposed. This topology enables the enhancement of amplifier bandwidth and achieves a more compact amplifier size. To remove the impedance inverting network...
A new Doherty power amplifier topology without a quarter-wave impedance inverting network is proposed. This topology enables the enhancement of amplifier bandwidth and achieves a more compact amplifier size. In order to remove an inverting network, the output matching network of the carrier amplifier is designed to realize high performance both at a low-RF level in the off-state of a peaking amplifier...
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