A 1.75dB-NF 25mW 5GHz Transformer-Based NoiseCancelling CMOS Receiver Front-End

📋 论文概要

该论文提出了一种基于变压器的噪声消除CMOS接收机前端，工作在5GHz频段，实现了1.75dB的极低噪声系数和25mW的低功耗，解决了传统LNA-first架构中Gm-cell功耗过大的问题。通过变压器反馈实现噪声抵消，在保持低噪声的同时优化了功耗和带宽。

💡 主要创新点

• 采用变压器反馈结构实现噪声消除，替代传统有源Gm-cell，降低功耗。
• 在5GHz频段以25mW功耗实现1.75dB的NF，兼顾低噪声与低功耗。
• 优化变压器匹配网络，提升增益和带宽，适用于sub-6GHz 5G/6G接收机。

🏷 关键词

📄 原文摘要

Massachusetts Institute of Technology, Cambridge, MA 1 2 With continuous exploitation of sub-6GHz wireless communication standards and the advent of 5G and 6G, the demand for faster speed and wider coverage keeps evolving. While it is expected to utilize higher working frequency to provide larger bandwidth, lower noise figure (NF) is also preferred to achieve better sensitivity or wider coverage. A straightforward solution to achieve a low NF is to employ LNA-first architecture; this configuration helps to achieve a sub-2dB NF for frequencies up to 6GHz. However, the Gm-cell does consume extra power [1,2]. Meanwhile, noise cancellation techniques are widely used to improve the noise performance [3-5]. Nevertheless, due to the input

👥 作者与机构

Kaituo Yang1, Chirn Chye Boon1, Guangyin Feng2, Chenyang Li1, Zhe Liu1,

Ting Guo1, Xiang Yi3, Yangtao Dong1, Ao Zhou1, Xiaoying Wang1 Nanyang Technological University, Singapore, Singapore South China University of Technology, Guangzhou, China 3