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노이즈 캔슬링 기법을 이용한 단일 입력 차동 출력 구조의 광대역 저잡음 증폭기
정태영(Taeyoung Chung),윤제형,서희송,최인영,김범만 대한전자공학회 2010 대한전자공학회 학술대회 Vol.2010 No.6
An balun low-noise-amplifier(LNA), a single-input and differential-output structure, is designed for TV tuner applications between 50MHz and 900MHz. It is achieved by a combination of common-gate and common-source stage which has a 180° phase difference and a following buffer stage for an output matching. The common gate stage also plays a part of an input matching. The total Noise figure is lower than 2.55dB over the bandwidth and the gain is 12.2-14.6dB while the linearity is still good. (The IIP3/IIP2 is 2.6dBm/9dBm.) The gain and phase errors are below 0.14dB and 3.8° while consuming 10mA current from 1.5 V supply voltage.