Radio-frequency amplifier circuit and control voltage setting method for radio-frequency amplifier circuit

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United States of America Patent

PATENT NO 9479117
APP PUB NO 20160049908A1
SERIAL NO

14926367

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Abstract

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A radio-frequency amplifier circuit includes first and second FETs cascode-connected to each other. The gate of the first FET is connected to a radio-frequency input terminal, and the drain of the second FET is connected to a radio-frequency output terminal. The source of the first FET is connected to a ground, and the drain of the first FET and the source of the second FET are connected to each other. A drive voltage is applied to the drain of the second FET. A bias setting unit is connected to the gate of the second FET. The bias setting unit sets a second control voltage to be applied to the second FET so that a node voltage between the drain of the first FET and the source of the second FET will be substantially half of the drive voltage.

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Patent Owner(s)

Patent OwnerAddress
MURATA MANUFACTURING CO LTDKYOTO JAPAN KYOTO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wakaki, Ken Kyoto, JP 9 3

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges61416713223622101 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 800255075100125150175200225250275300325350375400425450

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