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- W2972303885 abstract "A compact, pre-matched gallium-nitride (GaN) device is proposed to support high power, high efficiency, concurrent multiband amplifier applications. Novel in-package matching networks addressing both the input and output of high power GaN active devices are considered. As proof-of-concept, a symmetric Doherty power amplifier (PA) with 55.3 dBm (340 W) peak power is demonstrated to achieve 20% fractional RF bandwidth from 1.805 - 2.2 GHz with high efficiency and low baseband impedance. With digital-predistortion (DPD) compensation, the amplifier achieves 48% drain efficiency at average output power of 48.8 dBm, and ACPR better than -52 dBc during concurrent transmission of signals with 395 MHz instantaneous signal bandwidth (ISBW). The results represent the highest linearized efficiency reported for concurrent 3GPP Band 3 and Band 66 multiband scenarios for high power infrastructure PA applications." @default.
- W2972303885 created "2019-09-12" @default.
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- W2972303885 date "2019-06-01" @default.
- W2972303885 modified "2023-09-26" @default.
- W2972303885 title "Compact High-Efficiency High-Power Wideband GaN Amplifier Supporting 395 MHz Instantaneous Bandwidth" @default.
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- W2972303885 doi "https://doi.org/10.1109/mwsym.2019.8700873" @default.
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