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This paper presents design and implementation about an asymmetrical-Doherty-power-amplifier (A-DPA). The back-off efficiency and operating bandwidth are improved through considering knee-voltage (Vknee) effect and impedance-transformation-ratio (ITR) of inverter. The A-DPA is fabricated with NXP's 7th Generation Si LDMOS device BLF7G27-75P accompanied by the proposed combining network. Within a bandwidth...
This paper presents the design and realization of a high-efficiency Class-F−1 power amplifier, in which the input second harmonic effect is emphasized for the efficiency enhancement. Through the numerical analysis and device-model-based simulation, the optimum manipulation of input and output harmonic terminations are carried out. Following this knowledge, a 3.5-GHz Class-F−1 power amplifier with...
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