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The effect of time misalignment between the RF input and tuneable matching network (TMN) control signal in load-modulated PAs is experimentally investigated. A reactively load-modulated low-power GaAs E-pHEMT amplifier is used, operating at 2.3GHz with 20dBm peak output power. The amplifier is first characterised under CW operation and the appropriate functions for maximising PAE are extracted. These...
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