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- W4200255102 abstract "In this paper, the design method of Ka-band monolithic integrated circuit (MMIC) Doherty power amplifier (DPA) for 5G wireless communication based on a novel complex load modulation is demonstrated by using Cree’s 0.15 $mu$m Gallium Nitride (GaN) on silicon carbide (SiC) process. Previously, the classical load modulation of DPA relies on the real-to-real transformation of carrier PA output impedance ($R_{mathrm{L}}$ to 2$R_{mathrm{L}}$) from back off to saturation, and the value of R <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>L</inf> is normally related with the input impedance of the employed impedance transformer (IT), which leads to the relatively low R <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>L</inf> thus limiting the back-off efficiency of DPA. By using a novel complex load modulation, the R <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>L</inf> is not limited by the used IT anymore, which results in the carrier PA can operate with higher output impedance. Consequently, higher back-off efficiency can be obtained. To verify the effectiveness of the design method, a GaN on SiC DPA was designed for 5G applications in a simulation environment. Simulated results of the proposed DPA exhibit drain efficiencies of 37.5% at 6 dB back-off point and 45.5% at the saturation from 26 GHz to 29 GHz." @default.
- W4200255102 created "2021-12-31" @default.
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- W4200255102 date "2021-11-07" @default.
- W4200255102 modified "2023-09-30" @default.
- W4200255102 title "Design of Ka-Band Doherty Power Amplifier Using 0.15μmd GaN on SiC Process Based on Novel Complex Load Modulation" @default.
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- W4200255102 doi "https://doi.org/10.1109/wipda49284.2021.9645125" @default.
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