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- W2913410448 abstract "In this paper, the method of designing broadband Doherty power amplifier (DPA) with extended efficiency range is proposed. The carrier power amplifier operates in a continuous class-F mode to extend the bandwidth. Meanwhile, the peaking power amplifier operates in class-C mode. Additionally, the asymmetric structure is employed to extend efficiency range. A broadband DPA working across 1.8 to 2.6 GHz (bandwidth of 800 MHz) is designed and fabricated for validation. The fabricated power amplifier delivers 49.6-63.4% drain efficiency at 9-dB output back-off power levels and 51.4-67.8 % at peaking power levels with the peaking output power of 44.8-45.2 dBm. A 20 MHz LTE modulated signal with 7.6 peak-to-average power ratio is used to measure the linearity of the fabricated DPA. Results show the adjacent channel power ratios are -25 and -45 dBc respectively before and after digital predistortion." @default.
- W2913410448 created "2019-02-21" @default.
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- W2913410448 date "2018-11-01" @default.
- W2913410448 modified "2023-10-14" @default.
- W2913410448 title "Design of Broadband Doherty Power Amplifier with Extended Efficiency Range Employing Asymmetric Structure" @default.
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- W2913410448 doi "https://doi.org/10.23919/apmc.2018.8617155" @default.
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