A low-power 2.2-2.4-GHz receiver front end for Internet-of-Things (IoT) applications is presented. The front end consists of a capacitively cross-coupled common-gate low-noise amplifier (CC-CGLNA), with translational positive feedback from baseband to RF through a four-phase switching mixer, providing RF filtering and matching, in conjunction with a 1:4 transformer. A detailed analysis of the architecture is presented, highlighting the design tradeoffs between noise, out-of-band filtering, and power. A prototype integrated circuit, fabricated in 28-nm CMOS, consumes 580 μW of power for the entire receiver front end. With this submilliwatt power consumption, it achieves a noise figure (NF) of 11.9 dB, an in-band IIP3 of -6.5 dBm, and an out-of-band IIP3 of +3.3 dBm.

中文翻译：

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利用基于 N 路滤波器的平移正反馈的亚毫瓦抗干扰接收器的分析和设计


推出了适用于物联网 (IoT) 应用的低功耗 2.2-2.4 GHz 接收器前端。前端由电容交叉耦合共栅低噪声放大器 (CC-CGLNA) 组成，通过四相开关混频器提供从基带到 RF 的平移正反馈，提供 RF 滤波和匹配，并结合 1 ：4个变压器。对该架构进行了详细分析，强调了噪声、带外滤波和功耗之间的设计权衡。采用 28 nm CMOS 制造的原型集成电路，整个接收器前端的功耗为 580 μW。凭借如此亚毫瓦的功耗，它的噪声系数 (NF) 为 11.9 dB、带内 IIP3 为 -6.5 dBm、带外 IIP3 为 +3.3 dBm。