06MB2400, Development of SoC for Wired and Wireless Unified Network,
Kim Cheon Soo
Abstract
본 발명은 가변 이득 증폭기에 관한 것으로, 제1 및 제2 입력신호를 차동 입력하기 위한 제1 수단과, 불연속적으로 입력되는 복수개의 전류를 미러 형태의 전류로 조절하여 상기 제1 수단에서 흐르는 전류를 가변하기 위한 제2 수단과, 상기 제1 수단과 직렬로 연결되어 상기 제1 수단으로부터 출력된 두 차동신호를 증폭하는 제3 수단과, 불연속적으로 입력되는 복수개의 전류를 미러 형태의 전류로 조절하여 상기 제3 수단에서 흐르는 전류를 가변하기 위한 제4 수단과, 상기 제3 수단의 출력을 입력으로 피드백하기 위한 제5 수단과, 불연속적으로 입력되는 복수개의 전류를 미러 형태의 전류로 조절하여 상기 제5 수단에서 흐르는 전류를 가변하기 위한 제6 수단을 포함함으로써, 광대역 특성을 가지는 회로에서 각 단의 전류를 조절하여 대역폭과 이득 평탄도를 일정하게 유지하면서 이득의 크기에 변화를 주어 항상 일정한 출력레벨을 제공할 수 있는 효과가 있다.
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J. Kim et. al, "Trends in Lightweight Kernel for Many core Based High-Performance Computing", Electronics and Telecommunications Trends. Vol. 32, No. 4, 2017, KOGL Type 4: Source Indication + Commercial Use Prohibition + Change Prohibition
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