18HF1500, Development on millimeter-wave beamforming IC for 5G mobile communication,
Kim Kwang Seon
Abstract
전력 증폭기는 공통 소스 구조로 이루어진 복수의 증폭 회로 중 적어도 하나의 증폭 회로에 바이어스 전압을 인가하는 바이어스 회로를 포함한다. 상기 바이어스 회로는 외부로부터 인가되는 전압에 의해 턴온되고, 제1단이 전원 전압을 인가하는 전원단에 연결되고 제2단이 접지단에 연결되는 제1 트랜지스터, 상기 전원단과 상기 제1 트랜지스터의 제1단 사이에 직렬로 연결되는 제1 및 제2 저항, 상기 제1 및 제2 저항 사이의 노드에 애노드가 연결되고 캐소드가 상기 적어도 하나의 증폭 회로의 입력단에 연결되는 제1 다이오드, 제1단이 상기 제1 다이오드의 캐소드에 연결되어 있는 제3 저항, 상기 제3 저항의 제2단에 출력단이 연결되고 상기 제1 트랜지스터의 제2단에 입력단이 연결되는 인버터 회로, 그리고 상기 인버터 회로의 입력단과 출력단 사이에 직렬로 연결되어 있는 제2 트랜지스터와 제4 저항을 포함한다.
KSP Keywords
power amplifiers(PAs)
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