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We present in this paper a proposed high-efficiency Class-E power amplifier (PA) for RF Polar transmitters. The PA embodies a proposed novel matching network (MN) with three salient features. First, it is digitally-controlled, and can directly receive the digital Amplitude Modulation (AM) input data to the PA without the need for a conventional supply modulator. Second, the MN performs high-efficiency...
We present in this paper a high-efficiency Class-E polar power amplifier (PA) with a novel digitally-controlled output matching network (OMN). The OMN varies the load impedance seen by the PA to modulate the amplitude of the output signal. It performs the modulation while simultaneously achieving a high power-efficiency by attaining an approximate zero-voltage-switching condition at the PA, and mitigating...
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