POWER AMPLIFICATION CIRCUIT

A power amplification circuit includes an amplification transistor, a variable voltage power supply that supplies a variable voltage to a collector of the amplification transistor, a bias circuit that has a constant current amplification transistor outputting a DC bias current to a base of the ampli...

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Bibliographic Details
Main Authors SHIMAMOTO, Kenichi, TSUCHIDA, Shigeru, SAMATA, Mitsunori, TAHARA, Kenji, SUKEMORI, Yoshiaki
Format Patent
LanguageEnglish
Published 03.10.2019
Subjects
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
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Summary:A power amplification circuit includes an amplification transistor, a variable voltage power supply that supplies a variable voltage to a collector of the amplification transistor, a bias circuit that has a constant current amplification transistor outputting a DC bias current to a base of the amplifier transistor, and a current limiting circuit that limits the DC bias current. The current limiting circuit includes a current limiting transistor, a resistor element connected to a collector of the current limiting transistor and the variable voltage power supply, and a resistor element connected to a base of the current limiting transistor and a base of the constant current amplifying transistor.
Bibliography:Application Number: US201916296754