Efficiency is one of the most sought-after parameters in RF power amplifier (PA) design, since it translates directly to power consumption and operating cost. In continuous inverse Class F (CCF−1) PAs, the current waveform factor, δ, plays a major role in achieving high drain efficiency. With a modified lowpass output matching network (OMN), it is possible to constrain δ to a limited range high drain efficiency even when operating a PA with broadband frequency
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