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JSSC 2021第7期RF & Wireless22nm

A Baseband-Matching-Resi stor Noise-Canceling Receiver With a Three-Stage Invert

提出一种基带噪声消除接收器架构,提升带内线性度并打破线性度与噪声的权衡。
22nm FDSOI CMOS, >9dBm IIP3, 175MHz IF带宽, <5dB NF
基带噪声消除线性度跨阻放大器反相器FDSOI CMOS
创新点1:系统创新 - 所有有源电路工作在基带,包括低噪声跨导放大器(LNTA),显著简化了射频前端设计,降低了功耗和复杂度。
创新点2:电路创新 - 使用反馈机制提升线性度,通过LNTA在基带频率下的反馈操作,有效提高了接收器的带内线性度,IIP3 > 9dBm。
创新点3:电路创新 - 采用仅由反相器组成的跨阻放大器(TIA),简化了电路结构,同时实现了高IF带宽(175 MHz)和低噪声系数(sub-5dB NF)。
创新点4:电路创新 - 设计了具有7.6 GHz单位增益带宽(UGB)的运算放大器(OpAmp),并提供了稳定化机制,确保在高频下的稳定性和性能。
Abstract
In this article, we propose a baseband noise- canceling receiver architecture to increase in-band linearity. A key feature of the architecture is that all active circuits are in baseband, including the low-noise transconductance amplifier (LNTA). The LNTA operating at baseband frequencies allows the use of feedback to increase the linearity. This article analyzes a tradeoff that exists between in-b and linearity and noise in mixer- first receivers and shows how the proposed architecture breaks suc