A 40nm CMOS Highly Linear 0.4-to-6GHz Receiver Resilient to 0dBm Out-of-Band Blockers

📋 论文概要

本文提出了一种基于40nm CMOS工艺的0.4-6GHz高线性接收机，能够抵抗0dBm带外阻塞。通过改进混频器优先前端架构，解决了传统设计中噪声系数差和本地振荡器馈通的问题，实现了宽频带可重构和高线性度。

💡 主要创新点

• 提出了一种改进的混频器优先前端结构，在保持高线性度的同时降低了噪声系数和1/f噪声。
• 通过电路设计和优化，实现了对0dBm带外阻塞的强抗干扰能力，无需专用滤波。
• 采用40nm CMOS工艺实现了0.4-6GHz的宽频带覆盖，支持可重构多模接收。

🏷 关键词

📄 原文摘要

reconfigurability to replace any standard radio: they develop toward systems where a simplified antenna interface can be used, with most dedicated filtering removed. This requires a receiver accommodating much higher linearity and resilience against out-of-band interference than a standard radio, still achieving competitive sensitivity (especially in the absence of interference). Mixer-first front-ends with excellent linearity have been reported [3]. However, their NF (including 1/f in absence of the LNA gain) is not competitive, and they may suffer from large LO feedthrough to the antenna (LOFT). Moreover they lack receiver functionality such as gain and filtering, which cannot be simply added without compromising linearity. A receiver with mixer-at-the-antenna-based bandpass filter [4] similarly may suffer from LOFT

👥 作者与机构

Jonathan Borremans1, Gunjan Mandal1, Vito Giannini1, Tomohiro Sano2,

Mark Ingels1, Bob Verbruggen1, Jan Craninckx1 1 imec, Leuven, Belgium, 2Renesas Electronics, Itami, Japan SDRs come of age ([1,2]) and transcend beyond just acquiring the