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A Low-Power Linearized Ultra-Wideband LNA Design Technique
提出一种用于高频宽带应用的非线性电阻线性化技术,应用于超宽带低噪声放大器设计。
3–11 GHz带宽, 2.9 dB NF, 10 dB增益, 2.4 mW功耗, 1.3 V电源
线性化技术超宽带低噪声放大器共栅极低功耗
▸创新点1:采用主动非线性电阻的线性化技术,通过Volterra级数分析其性能,显著提高了高频宽带应用的线性度,实验结果显示级联LNA的IIP3改善了3.5至9 dB。
▸创新点2:将线性化技术应用于超宽带共栅极低噪声放大器(CG-LNA),在1.5至8.1 GHz带宽内实现了11.6 dB的最大增益和3.6 dB的最小噪声系数,功耗仅为2.62 mW。
▸创新点3:设计了两种参考电路(标准级联CG-LNA和单晶体管CG-LNA)进行对比验证,单晶体管CG-LNA在3–11 GHz带宽内实现了436.5至439.5 dBm的IIP3和2.9 dB的噪声系数,功耗低至2.4 mW。
▸创新点4:通过优化电路结构和参数,实现了低功耗(1.3 V电源)和高线性度的平衡,为宽带LNA设计提供了新的解决方案。
Abstract
Edgar Sánchez Sinencio , Fellow, IEEE
Abstract—This work proposes a practical linearization tech-
nique for high-frequency wideband applications using an active
nonlinear resistor , and analyzes its performance with V olterra
series. The linearization technique is applied to an ultra-wideband
(UWB) cascode common gate Low Noise Amplifier (CG-LNA),
and two additional reference designs are implemented to evaluate
the linearization technique—a standard (without lineariza-
tion) cascode CG-LNA and a