POWER AMPLIFIER

According to an embodiment of the present invention, a power amplifier includes: an amplifying unit including at least one a field effect transistor (FET) which operates by an amplification end to amplify an input signal; and a body control unit controlling a bias voltage of a body terminal of the F...

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Bibliographic Details
Main Authors HONG, SONG CHEOL, KANG, SEUNG HOON, KIM, GYU SUCK
Format Patent
LanguageEnglish
Korean
Published 29.09.2016
Subjects
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
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Summary:According to an embodiment of the present invention, a power amplifier includes: an amplifying unit including at least one a field effect transistor (FET) which operates by an amplification end to amplify an input signal; and a body control unit controlling a bias voltage of a body terminal of the FET based on a size of energy of the input signal. The body control unit controls the bias voltage of the body terminal as the energy of the input signal is high, thereby improving linearity. 본 발명의 일 실시 예에 따른 전력 증폭기는, 증폭단으로 동작하는 적어도 하나의 전계 효과 트랜지스터(FET)를 포함하여 입력 신호를 증폭시키는 증폭부; 및 입력 신호의 에너지의 크기에 기초하여 전계 효과 트랜지스터의 바디 단자의 바이어스 전압을 제어하는 바디 제어부; 를 포함하고, 바디 제어부는 입력 신호의 에너지가 클수록 바디 단자의 바이어스 전압이 낮아지도록 제어함으로써, 선형성을 향상시킬 수 있다.
Bibliography:Application Number: KR20150037320