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A novel injection linearization technique called as up-converted dual-envelope injection (UCDEJ) is proposed in this paper, which combined with digital predistortion (DPD) can get better linearization performance. Starting with an investigation of traditional envelope injection (EJ) method, the UCDEJ technique with enhanced performances is deduced. The injected signal is composed of up-converted two...
This paper reports on a modified class-E amplifier with a tuned series-parallel resonance network. This configuration introduces two additional resonance frequencies. The design equations required to determine the optimum operations are analyzed in detail by introducing three additional boundary conditions. compared to the conventional class-E amplifier, the numerical results show that the improvements...
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