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中科院微电子所在超宽带低噪声集成电路设计领域取得新进展
微弱信号处理链路对噪声极为敏感,低噪声放大器作为信号链路的关键元器件,决定了微弱信号的检测灵敏度。传统的低噪声芯片受晶体管的增益滚降、噪声和带宽相互制约的影响,导致各类系统的灵敏度和带宽无法满足信号多样性要求。同时,当电路长期工作在低温环境时,放大器的不稳定性加剧,导致系统可靠性降低。
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